Latest Products https://www.petrochemspecialities.com Latest Products Thu, 07 Jul 2022 03:26:38 +0530 en-us https://www.petrochemspecialities.com Warm Mix Asphalt Additives https://www.petrochemspecialities.com/warm-mix-asphalt-additives.htm https://www.petrochemspecialities.com/warm-mix-asphalt-additives.htm Tue, 16 Nov 2021 00:00:00 +0530 Warm-mix is a form of Hot-mix Asphalt produced and laid at lower than recommended HMA temperatures to decrease fuel consumption, reduce green house gases and to achieve same degree of mix compaction even at lower temperatures. The additives used for this purpose are called Warm-mix additive and they include a range of chemical and wax based products. During initial evolution of warm-mix concept, most of the additives contained water to achieve “foaming” of bitumen resulting in warm mix properties. These additive carried a number of problems like uncertain results, induced stripping, tedious process, increased oxidation and premature failure of pavement, human health hazard etc.  With advancement of technology, fat, chemical and wax based meltable solid type additives were introduced by many reputed organizations with varied levels and advantages in terms of dose, emission, field performance, stripping and oxidation control etc. ‚ÄčIn latest of Warm-mix technology, very high performance liquid additives were introduced with advantages of low dose, easy mixing, safe handling, maintain temperature during haulage, outstanding control of stripping, minimized oxidation, cost effective etc. “WETBOND-WMA” liquid is the shining star of this category of low dose, high performance additives with unique feature of being non-hazardous. Emulsifiers https://www.petrochemspecialities.com/cationic-emulsifier.htm https://www.petrochemspecialities.com/cationic-emulsifier.htm Tue, 16 Nov 2021 00:00:00 +0530 In normal atmospheric conditions, Bitumen and water can't mix and will separate instantly. Emulsifiers are speciality chemicals used to stabilize the fine dispersion of bitumen droplets in water. Depending on their chemical properties, emulsifiers are of two major types: Cationic and Anionic. Cationic emulsifiers provide a fine emulsion under strong acidic conditions, where normally concentrated hydrochloric acid is used for adjustment of final pH. On the other hand Anionic emulsifiers provide a stable bitumen emulsion under strong alkaline condition, where normally Sodium Hydroxide is used for adjustment of final pH. The emulsifiers can be ionic products which require neutralization/ Acidification/ Alkalisation at the time of emulsion production or can be a pre-neutralized and pH fixed (Ready), requiring no acid / alkali at the time of bitumen emulsion production. CATIONIC EMULSIFIERS : Cationic emulsifiers are used to produce the large volume and most popular type of Bitumen Emulsions called "Cationic Bitumen Emulsions". These are the most commonly used Bitumen Emulsions in the world for road and highway applications. The bitumen droplets in Cationic Bitumen Emulsions carry a positive charge, so special type of low dose emulsifiers are used for their production which are generally treated with concentrated hydrochloric acid in water phase for their "activation". There are two broad range of Cationic Emulsifiers: Conventional (which require neutralization with HCl) and Ready (Ready to use product without modification) Emulsifiers. These emulsifiers are further divided into Emulsifiers for Rapid / Medium Setting Cationic Bitumen Emulsions and Emulsifiers for Slow Setting Cationic Bitumen Emulsions. The details are given below: Conventional Cationic Emulsifiers https://www.petrochemspecialities.com/conventional-cationic-emulsifiers.htm https://www.petrochemspecialities.com/conventional-cationic-emulsifiers.htm Emulsifiers Tue, 02 Nov 2021 00:00:00 +0530 Conventional Cationic emulsifiers are by far the widest used class of Bitumen Emulsifiers. They are very low dose, economical and high performance products for use in regular Bitumen Emulsion Plants. They are: Emulsifiers for Rapid / Medium Setting Cationic Bitumen Emulsions: PSEM-RMS-DM Emulsifiers for Slow Setting Cationic Bitumen Emulsions: PSEM-SS-ABT Ready Emulsifiers https://www.petrochemspecialities.com/ready-emulsifiers.htm https://www.petrochemspecialities.com/ready-emulsifiers.htm Emulsifiers Tue, 02 Nov 2021 00:00:00 +0530 Ready emulsifiers for cationic bitumen emulsions are special grade of pre-acidified and activated emulsifiers specially for no-frill on-site production of different grade of these emulsions without a big bitumen emulsion plant setup and to maintain the quality of bitumen emulsion up to own standards.   These emulsifiers are added into hot water and then this soap water is passed through a compact colloid mill with hot bitumen to get cationic bitumen emulsion instantly. The benefits of Ready Emulsifiers are: Maintaining the quality and avoiding material theft / water mixing during transportation. Fresh material made at site in required quantity hence avoiding construction delays. Material made with a very small bitumen emulsion site plant and compact colloid mill. Exceptional saving in bitumen emulsion cost. Saving of transportation cost involved. Any time availability of fresh bitumen emulsion even for late hours or night working.    Our cationic ready emulsifiers are : Emulsifiers for Rapid / Medium Setting Cationic Bitumen Emulsions: PSEM-RMS-DMR Emulsifiers for Slow Setting Cationic Bitumen Emulsions: PSEM-SS-ABTR Silicon Based Anti-stripping Additive https://www.petrochemspecialities.com/silicon-based-anti-stripping-additive.htm https://www.petrochemspecialities.com/silicon-based-anti-stripping-additive.htm Tue, 16 Nov 2021 00:00:00 +0530 Nano-technology based Anti-stripping Additives are the latest innovation in asphalt road construction technology. Having the space age technology and acting as an adhesion promoter / water proofing agent, these additives utilize the bond formation at molecular level, so they are low dose products with ultimate thermal stability. Our Nano-technology products work on synergistic combination of molecular amine and silicon acting as reactant as well as facilitator for active bridge formation between road aggregates and bitumen. The bond formation by these additives are very stable and provide a very long water protection for the treated surface. Mode of action : Nano-technology based Anti-stripping Additives are based on silicon and amine molecular chemistry. These products assist in formation of a non-reversible covalent bond between bitumen and silica present in road aggregates. Since this bonding is at molecular level, it is one of the toughest in present day chemistry, which is resistant to the action of higher temperatures or water. When these innovative Nano-technology products are mixed with bitumen, the polyamine groups react with organic acids present in bitumen and create a basic environment beneficial for stronger bitumen-aggregate bond formation and molecular reactive silicon forms complex silicon bridge intermediates. When the Nano-technology anti-stripping additive treated bitumen is mixed with common road aggregates, the active silicon bridge intermediates in bitumen readily form covalent bond with nearest silicon molecules on aggregate surface. This bond is physically and chemically resistant so it does not allow ingress of water between bitumen-aggregate interfaces. Since the active silicon bridge formation takes place at molecular (Nano) level, a small dose of these products are enough to achieve complete protection from water damage. Conventional Anti-stripping Agents https://www.petrochemspecialities.com/conventional-anti-stripping-agents.htm https://www.petrochemspecialities.com/conventional-anti-stripping-agents.htm Tue, 02 Nov 2021 00:00:00 +0530 The Premature failure of Bituminous Pavements due to action of water is the most common problem and single biggest factor causing early pavement distress. The most important reason contributing to this condition is improper adhesion between bitumen and commonly used aggregates, salt contamination of water/soil and water drainage problems. Majority of aggregate show high stripping value (as high as 70%) and most of them fail miserably in bitumen adhesion properties. These conditions prevail across continents, thus all around the world, anti-stripping agents are recommended and used to extend pavement life. Wetbond-S Silicon Based Anti-stripping Additive https://www.petrochemspecialities.com/wetbond-s-silicon-based-anti-stripping-additive.htm https://www.petrochemspecialities.com/wetbond-s-silicon-based-anti-stripping-additive.htm Tue, 16 Nov 2021 00:00:00 +0530 "Wetbond-S" is next generation Nano-technology Silicon based Anti-stripping Additive for Asphalt. This product is a low dose and extremely thermal resistive additive for use in Hot-mix and Warm-mix road constructions. This product is specially suitable for aggregates having very high and tough to control stripping profile.Physical Properties :"Wetbond-S" is brownish clear liquid at room temperature with characteristic citrous odour. This product is non-miscible with water and miscible with polar & hydrocarbon solvents. The thermal stability of this product in hot bitumen (at 160°C) is over 15 days and no additional dose addition/adjustment is required on prolonged storage in hot bitumen in normal course of Hot-mix and Warm-mix pavement constructions. As this product is used in a very low dose, it does not have any effect on physical properties of paving bitumen of any grade including VG-10, VG-30, VG-40, CRMB or PMB (Elastomeric & Plastomeric types) towards Penetration, Softening Point, Ductility etc. However the chemical properties are changed tremendously as the bitumen becomes more receptive to aggregates and bonding between aggregates and treated bitumen becomes highly resistant to stripping even under extreme atmospheric conditions. This ensures long term pavement durability without affecting the quality of work. This product is suitable for production of Refinery-treated non-stripping bitumen, Hot-mix pavement constructions, Warm-mix constructions and for industrial bituminous coatings.Chemical properties : Dose: 0.04 to 0.07% by weight of Bitumen ( 0.4 to 0.7 Kg per MT of Bitumen) Specific Gravity : 0.86 - 0.95 Amine Value: > 200 Active Nitrogen : > 7.00 Water Content : < 1.0% Active content : 100% Shelf Life : 4 Years from the date of production in sealed containers. Colour : Brownish clear liquid. Compatibility : All grades of Road and Industrial Bitumen. Advantages :"Wetbond-S" is oily liquid product for premixing or direct injection in Bitumen. This product has several advantages over conventional Anti-stripping Agents: Very low dose product, no effect on bitumen properties. No degradation when stored in hot bitumen, saves money. Nano active amine and silicon based, works on molecular level. High amine value for active bridge formation between Bitumen and aggregates. High Nitrogen content gives excellent performance even with moist aggregates. Readily soluble in hot bitumen, so fit even for direct dosing in HMP. Non Hazardous product for safe handling and storage. Economical as compared to conventional products in dose dependent comparison. Storage and Handling :"Wetbond-S" can be stored in HDPE or MS drums / tanks at a cool and dry place at ambient temperature. This product contains organic silicon derivatives which can cause mild irritation to skin, eyes and lungs. Wetbond-SX Silicon Based Anti-stripping Additive https://www.petrochemspecialities.com/wetbond-sx-silicon-based-anti-stripping-additive.htm https://www.petrochemspecialities.com/wetbond-sx-silicon-based-anti-stripping-additive.htm Tue, 16 Nov 2021 00:00:00 +0530 "Wetbond-SX" is next generation Nano-technology Silicon based Anti-stripping Additive / Warm-mix Additive for Asphalt. This product is a low dose and extremely thermal resistive additive for use in Hot-mix and Warm-mix road constructions. This product is specially suitable for aggregates having very high and tough to control stripping profile.Physical Properties :"Wetbond-SX" is brownish yellow clear liquid at room temperature with characteristic citrous odour. This product is non-miscible with water and miscible with polar & hydrocarbon solvents. The thermal stability of this product in hot bitumen (at 160°C) is over 15 days and no additional dose addition/adjustment is required on prolonged storage in hot bitumen in normal course of Hot-mix and Warm-mix pavement constructions. As this product is used in a very low dose, it does not have any effect on physical properties of paving bitumen of any grade including VG-10, VG-30, VG-40, CRMB or PMB (Elastomeric & Plastomeric types) towards Penetration, Softening Point, Ductility etc. However the chemical properties are changed tremendously as the bitumen becomes more receptive to aggregates and bonding between aggregates and treated bitumen becomes highly resistant to stripping even under extreme atmospheric conditions. This ensures long term pavement durability without affecting the quality of work. This product is suitable for production of Refinery-treated non-stripping bitumen, Hot-mix pavement constructions, Warm-mix constructions and for industrial bituminous coatings.Chemical properties : Dose : 0.07 to 0.1% by weight of Bitumen ( 0.7 to 1.0 Kg per MT of Bitumen) as anti-stripping additive. Specific Gravity : 0.96 - 0.98 Water Content : < 1.0% Flash Point : >100 degree centigrade Active content : 100% Shelf Life : 4 Years from the date of production in sealed containers. Colour : Brownish yellow clear liquid. Compatibility : All grades of Road and Industrial Bitumen. Advantages :"Wetbond-SX" is oily liquid product for premixing or direct injection in Bitumen. This product has several advantages over conventional Anti-stripping Agents: Very low dose product, no effect on bitumen properties. No degradation when stored in hot bitumen, saves money. Nano active silicon based, works on molecular level. Optimum amine value for active bridge formation between Bitumen and aggregates. Optimum Nitrogen content gives excellent performance even with moist aggregates. Readily soluble in hot bitumen, so fit even for direct dosing in HMP. Non Hazardous product for safe handling and storage. Economical as compared to conventional products in dose dependent comparison. Storage and Handling :"Wetbond-SX" can be stored in HDPE or MS drums / tanks at a cool and dry place at ambient temperature. This product contains organic silicon derivatives which can cause mild irritation to skin, eyes and lungs. Moisture Damage Conventional Anti-stripping Agents https://www.petrochemspecialities.com/moisture-damage-conventional-anti-stripping-agents.htm https://www.petrochemspecialities.com/moisture-damage-conventional-anti-stripping-agents.htm Tue, 16 Nov 2021 00:00:00 +0530 Since this is well established that Bituminous Pavements suffer from water damage, this damage can result in rutting, shoving, ravelling, bleeding, cracking and formation of potholes. More importantly this can also lead to loss of chippings from surface dressings (chip-sealing) and freeze-thaw damage in snow-bound area. The reason for this problem on a micro scale is loss of adhesion between the bitumen and the aggregates. There are very few types of aggregate which can resist the action of water, because the water can enter the pavement structure in a number of ways: Wet bitumen-aggregate interface on aggregate not dried properly. Rain water seepage through shoulders, cracks or pores, ground / sub-surface water exhibiting a hydrostatic action (moving inside bituminous layer). Capillary water sucked and expelled out from the top or subgrade. Water vapors formed in the subgrade due to hot weather.   The factors contributing to moisture damage of these pavements includes : Siliceous type and dusty aggregates. Presence of clay on aggregate surface. Bitumen with higher acidity profile. Mix designs with less binder and open grading of aggregates. Material with higher voids due to improper compaction. Inadequate drainage. Presence of water vapors between layers. Adhesion of Bitumen Conventional Anti-stripping Agents https://www.petrochemspecialities.com/adhesion-of-bitumen-conventional-anti-stripping-agents.htm https://www.petrochemspecialities.com/adhesion-of-bitumen-conventional-anti-stripping-agents.htm Tue, 16 Nov 2021 00:00:00 +0530 Bitumen is the semisolid material obtained from distillation of crude petroleum oil. It is largely made up of hydrocarbons with low polarity hence it has a very low reactive index and shows little chemical affinity for aggregate, whereas most of the aggregates are ionic so they have high affinity for water. This shows that bitumen can be easily displaced by water, leading to separation of bitumen layer from aggregate.Being the distillate of crude oil, bitumen contains a number of organic substances. Presence of naphthanic acid and other carboxylic acids make the Bitumen slightly acidic, so with siliceous aggregates repulsive forces makes the bonding inefficient. This may lead to the problem of stripping and failure of bituminous pavements.There is only one cause of stripping: water getting between a bitumen film and the aggregate surface, replacing the bitumen as the coating of the aggregate. Practically the adhesion between bitumen and aggregate depends on the source of the bitumen and the chemistry of the aggregate surface. The Aggregates can be of an "acidic" type with surface showing negative charge, or "basic" with surfaces showing positive charge. Acidic aggregates include high silica content rocks, while basic aggregates include carbonate mixes. Bitumens, especially those with high acid value, show a tendency to become negatively charged resulting in adhesion problems (particularly with acidic aggregates). Although water damage is highest in wet climates and high traffic roads show such damage most quickly, but this problem can occur in all climates. Adhesion Promoter Conventional Anti-stripping Agents https://www.petrochemspecialities.com/adhesion-promoter-conventional-anti-stripping-agents.htm https://www.petrochemspecialities.com/adhesion-promoter-conventional-anti-stripping-agents.htm Tue, 16 Nov 2021 00:00:00 +0530 The chemical affinity between bitumen and aggregate can be improved by the addition of very small quantities of chemicals which change the nature of the aggregate or the bitumen to have more affinity for the other.These chemicals are known as "Anti-stripping Agents" "Anti-stripping Additive" or "adhesion promoters".Since the stability of bituminous pavement largely depends on adhesion between bitumen and aggregates, the ionic nature of aggregate is an important factor explaining the problem of stripping that differ for different type of aggregates.This also explains non-formation of stable bond in bituminous pavement construction. (refer IS-6241:1971 "Method of test for determination of stripping value of road aggregates, ASTM D3625 "The Boiling Water Test"). The widely accepted class of Anti-stripping agents belong to Fatty Polyamine group of chemicals where even in a very small dose they provide : Active and passive adhesion between Bitumen and the aggregates, Being surface active agents they provide bituminous wetting action (in some cases, reduced requirement of Bitumen), and prolongs the pavement life by slowing the ageing process. Pavement Stability Conventional Anti-stripping Agents https://www.petrochemspecialities.com/pavement-stability-conventional-anti-stripping-agents.htm https://www.petrochemspecialities.com/pavement-stability-conventional-anti-stripping-agents.htm Tue, 16 Nov 2021 00:00:00 +0530 Although the use of Anti-stripping Agents can not eliminate the pavement damage problems caused by poor pavement design, bad construction techniques or poor materials, but mostly helps to minimize their effect.The twin aspects of pavement stability are : Bituminous wetting: whether Bitumen properly coats the aggregate surface or not? Resistance to stripping: whether Bitumen sticks to the aggregate for lifetime of the road or not? Poor wetting can be avoided by the modification of the bitumen properties or by the modification of the aggregate surface. The aggregates can be pre-coated with kerosene or water solution of Anti-stripping Agent to make the surface more receptive to the bitumen. But more practical approach is to modify the binder properties by the adding Anti-stripping Agent additives also known as "adhesion promoters", "wetting agents" or "Anti-stripping Compounds" DERBO & WETBOND Conventional Anti-stripping Agents https://www.petrochemspecialities.com/derbo-wetbond-conventional-anti-stripping-agents.htm https://www.petrochemspecialities.com/derbo-wetbond-conventional-anti-stripping-agents.htm Tue, 16 Nov 2021 00:00:00 +0530 The problem of stripping can be effectively minimized using "DERBO" and "WETBOND" range of anti-stripping agents. Since they are made from Polymeric amines, the amine group of "DERBO" and "WETBOND" anti-stripping agents reacts with acidic aggregates and makes the aggregate surface hydrophobic (repulsive to water). Further lipophilic (oil loving) Fatty chain remains well suspended in bitumen to form a bridge between bitumen and aggregates. This prevents stripping even in presence of water.Amine based "DERBO" and "WETBOND" Anti-stripping agents also act by changing the interfacial tension between Bitumen and aggregates and strengthening the bonding for long term durability.In construction of bituminous pavements, the aggregates are used in two ways e.g. in coated form (Hot Mix etc.) and uncoated form (spraying work etc.). When used in proper dose, "DERBO" and "WETBOND" are equally effective in both the applications. In coated form they prevents stripping even when coated aggregates are submerged in water and in uncoated form they provides active adhesion of bitumen even with wet aggregates.Dose of DERBO and WETBOND : Dosing of DERBO and WETBOND can be done at different stages of mixing and application. An automatic dosing system can be installed in hot mix plant, however an easier way is to add pre-determined quantity in bitumen storage tank before unloading the bitumen from bulk tanker. Alternatively it can be mixed in stored bitumen by gentle stirring for 15 minutes by a mechanical or manual process. The required dose of each grade will be different depending on type of bitumen used, type of aggregates and type of surfacing. (The dose can be estimated by some simple tests covered under testing page) Tests and Methods Conventional Anti-stripping Agents https://www.petrochemspecialities.com/tests-and-methods-conventional-anti-stripping-agents.htm https://www.petrochemspecialities.com/tests-and-methods-conventional-anti-stripping-agents.htm Tue, 16 Nov 2021 00:00:00 +0530 Our products are tested from : Central Road Research Institute, New Delhi. IIT - Roorkee. Indian Institute of Petroleum, Dehradun CEG Test Lab & Research Center, Jaipur Delhi Test House, Delhi Shriram Institute of Industrial Research, Delhi U.P.P.W.D. Research Institute, Lucknow. and many more...   Common tests for on-site evaluation of the efficacy of Anti-stripping Agents are : Coating Retention Test : A test similar to stripping test where the blends of different doses of Anti-stripping Agents (0.0, 0.2, 0.4, 0.6, 0.8 and 1.0%) in hot Bitumen are prepared and 10 gms of each blend is mixed with 200 gm hot aggregates and placed in a beaker to cool. Each beaker is then filled with distilled water to submerge the aggregates and placed in water bath maintained at 40°C for 24 hrs. After 24 hrs, each beaker is visually inspected to determine the percentage of Anti-stripping Agent sufficient to retain more than 95% coating. Under Water Coating Test : Different blends of Anti-stripping Agents (0.0, 0.2, 0.4, 0.6, 0.8 and 1.0%) are made in bitumen cutback MC-30. In a 1-litre capacity tin container, 200 gm aggregate are taken and 750 ml of warm distilled water (at 40°C) is poured inside. On top of water, 10 gm of bitumen-antistripping blend is poured. The container is then capped and shaken vigorously for 2 minutes. Then water is drained out and aggregates are transferred on white paper. Percentage of area of aggregates coated with bitumen inside water is then visually estimated. Boiling Test : Blends of different doses of Anti-stripping Agents (0.0, 0.2, 0.4, 0.6, 0.8 and 1.0%) in Bitumen are prepared and each mixed in 10 gm quantity with 200gm aggregates and put in a beaker to cool. Each beaker is then filled with distilled water to submerge the aggregates and boiled vigorously for 10 min. After 10 min water is drained and the aggregates are transferred to white paper where retained coating is visually estimated. Retained Marshall Stability : Test specimens are prepared with 5% Bitumen/ Bitumen-Antistripping Agent blends. One group is placed in water at 60°C for 40 min and tested for Marshall Stability. The other identical group is immersed in water at 60°C for 24 hrs. and then tested for Marshall Stability. The Retained strength is then calculated by determining the percentage of Retained Marshall Stability.   Applications : Surface Dressing (Chip-Sealing) : Surface dressing (chip sealing) involves spreading uncoated chippings over a sprayed layer of Bitumen followed by rolling. The applied Bitumen layer cools rapidly leading to wetting problems which become worse by wet and dusty aggregates. In this case an active adhesion is required and typically 0.5-1.0 % DERBO is added to the bitumen. Alternatively the chippings can be pre-coated with a mix of diluted binder and DERBO or a diluted water solution of DERBO can be sprayed on chippings before spreading. Field studies have demonstrated that the use of Anti-stripping Agents in surface dressing provides resistance to early rain. Hot-Mix Surfacing : Hot Mix surfacing is the most efficient and preferred road construction technology. This however requires stringent control of performance features like stripping which most of the times shortens the pavement features and life. This problem can be minimized by using small doses of DERBO that also results in Bitumen saving and good saving in maintenance. Maintenance : When repair works like pot-hole filling, crack sealing, rutting etc are carried out in rainy season or where possibility of moisture damage is high, a little addition of Anti-stripping Agent ensure stable repairs. Hot Recycling : When a pavement is subjected to hot-recycling, if partly coated surfaces are observed in the reclaimed mix, to provide easy wetting, better water resistance and better compaction, Anti-stripping Agent should be used. Emulsions : Cationic bitumen emulsions provide good adhesion in road applications but sometimes an additional water resistance is required. Anti-stripping Agent can be added to the binder before emulsification. Anionic emulsions generally provide poor adhesion to siliceous (acidic) aggregates. Adhesion of anionic emulsions can also be improved by adding Anti-stripping Agent to the binder before emulsification, or to the finished emulsion. Precoated Chippings : When chippings are lightly coated with bitumen, kerosene or diesel to ensure adhesion in surface dressing or when rolled into hot rolled bituminous surfaces to improve skid resistance, Anti-stripping Agent can be added to the coating material to ensure good adhesion. Prime Coats : Where cutbacks are used for priming and dust control during construction, since road base retains moisture and remains cold, Anti-stripping Agent should be added to the prime coat to ensure active adhesion and protection from moisture.   Packings : DERBO-101-P5 Solid Flakes in 25 Kg. LDPE Lined Paper Coated HDPE Bags. DERBO-401 Liquid in 180 Kg. UN Certified MS Drums. WETBOND-SP Liquid in 190 Kg. UN Certified MS Drums. WETBOND-E Liquid in 200 Kg. MS Drums / 100 Kg HDPE Mini-drums.   References : Serious failures can occur very shortly after laying surface treatments on roads carrying medium or heavy traffic if wet weather occurs within 24 hours after completion of work. Fast, tense traffic may flying aggregates off the roads exposing a layer of binder that may be slick. This problem has been solved by use of surface active chemicals - cationic material consisting of long-chain hydrocarbon soluble in tar and bitumen and has positively charged ions. (Recent Research on some problems in construction and maintenance of roads, By: Lee A.R., Roads and road construction Vol:36 N0.424).It is recommended that an adhesion agent be added to binder (unless previously added by binder manufacturer) if unsettled weather is imminent and uncoated chippings are being used. (Road Note 39, Second Edition, Recommendations for road surface dressing, Transport and road research laboratory, Department of Transport, London)Even if the construction is done during dry weather, there are possibilities of stripping taking place subsequently owing to rainfall. Some aggregates resist the action of water better than others. In some cases by adding some surface active agent, this resistance is increased. (Adhesion between Bitumenous Binders and Road Stones, By C.G. Swaminathan & K.P. Naire, Road Research paper no.14, Central Road Research Institute, New Delhi and IRC Journal Vol.XXII.2)The Delhi quartzite aggregates used in bituminous macadam construction which show practically no stripping in laboratory tests undergo stripping in the field. Incorporation of anti-stripping agent in all open graded bituminous mixes prepared with Delhi quartzite aggregates is warranted. (Highway Research Record No.11, Road Researches in India).The performance of test-section laid with bitumen with antistripping agent was better than that of those constructed with bitumen without anti-stripping agent. (Highway Research Record No.11, Road Researches in India)Adhesion improver prevents moisture damage and slows ageing process in bituminous mixes. (The Shell Bitumen Handbook Fifth Edition, Evaluation of Asphalt Mixtures using the Texas freeze-thaw pedestal test By: Kennedy TW, FL Roberts and KW Lee)Use of anti-stripping agents increases cost of construction by a small margin but would prove beneficial in long run due to increased durability of bituminous surfacing and would reduce cost of maintenance. (Highway Research Record No.10, Road Researches in India)Anti-stripping agents improves bitumen coating property of the aggregates. (Highway Research Record No.10, Page 25,Road Researches in India)As a precautionary measure Anti-Stripping Agent should be added to the bitumen at the time of construction. (Code of practice for Maintenance of Bituminous surfaces of Highways, Page 24, IRC-82:1982)This product has also been found to be of great help in surface treating the fresh WBM roads for immediate opening of traffic. (Fundaments of adhesion and role of adhesion agents in bituminous road construction, Indian Highways, IRC, NewDelhi)Many states require Anti-stripping agents as a safety factor in open mixes and as a requirement for dense mixes made with aggregates which show stripping tendencies. Since preventing raveling would be advantageous to both the state and the traveling public, a good case could be made for the state to pay for Anti-Stripping agents used in late season work. The 15-20% per tone of mix incurred by using Anti-stripping agents may be good insurance in late season work. (A study of Road Aggregates for use in Black Top Surfacings, By Sh. K.P. Nair & B.S. Gogte, Paper No.51, Central Road Research Institute, NewDelhi) Wetbond-WMA Warm Mix Asphalt Additives https://www.petrochemspecialities.com/wetbond-wma-warm-mix-asphalt-additives.htm https://www.petrochemspecialities.com/wetbond-wma-warm-mix-asphalt-additives.htm Tue, 16 Nov 2021 00:00:00 +0530 Physical Properties :“WETBOND-WMA” liquid is a brownish dark oily liquid at room temperature. This product has a characteristic fatty smell. When added to the hot bitumen, it readily disperses with minimal stirring and lowers the surface tension of bitumen for easier wetting of aggregates. The achieved lower surface tension remains active until the temperature of asphalt mix is dropped below 80 degree centigrade, after which the asphalt mix properties return back to normal.“WETBOND-WMA” in its normal dose, does not have any significant effect on physical properties of bitumen. It however enhances the “flow” properties of asphalt mixes for easy compaction even at lower temperatures. This product also provides excellent water protection (Anti-stripping) and anti-oxident properties to bitumen for longer pavement life.Mode of Action : “WETBOND-WMA” liquid is based on chemically modified fatty materials fortified with rheology modifiers for maintaining the temperature of the mix during transportation to application site and low temperature flow properties of asphalt mixes. The chemical inclusion of certain organic and inorganic molecules activate this product and assist in formation of a stable covalent bond (bridge) between bitumen and surface of aggregates. The flow properties of the asphalt mix are maintained by the special molecules to achieve best compaction even in lower paving and compaction temperatures. WETBOND-WMA has special feature of enhancing bond between bitumen and aggregates of asphalt mix, which ensures complete protection from stripping and water damage. Chemical Properties : Dose: 0.3 to 0.5% by weight of Bitumen ( 3 to 5 Kg per MT of Bitumen) Specific Gravity : 0.95 - 0.98 Flash Point: > 150 Degree Centigrade Pour Point : > -5 Degree Centigrade Water Content : < 1.0% Active content : 100% Shelf Life : 2 Years from the date of production in sealed containers. Colour : Brownish thick liquid. Compatibility : All grades of Road and Industrial Bitumen. Advantages of WETBOND-WMA :“WETBOND-WMA” liquid is easy to use product for premixing in hot bitumen. This product has several advantages over competitors : Provides fuel saving and reduction in carbon footprints by providing lower hot-mix production and laying temperatures. No water ensures no spattering or foaming of bitumen and best warm mix properties even in cold climate pavement constructions. Not covered under hazardous products so easy to use and safe storage. Liquid product, easy to mix and convenient for direct dosing in HMP. Provides additional advantage of Anti-stripping Agent and anti-oxidant for hot mix surfaces. This ensures defect free bituminous pavements for years. Special ingredients for high thermal stability. Space age technology for best in class performance. Performance grade yet economical as compared to costly imported products. Low dose product. Procedure for mixing of WETBOND-WMA :"WETBOND-WMA” can be conveniently mixed with hot bitumen by following method : Post addition in hot bitumen stored in bulk bitumen tank. In this method, the required quantity of WETBOND-WMA is slowly added to stored hot bitumen through the open manhole of the tank or using a suitable pump. After addition of complete dose, the bitumen will be circulated for 15 minutes and then it can be used as normal. Direct dosing in Hot Mix Plant by precise dosing device. This method helps in eliminating human contact and ensures better regulatory compliance. However this system must be selected with care to ensure proper dosing and the Hot mix plant manufacturer must be consulted for proper installation. PSEM-RMS-DM Conventional Cationic Emulsifiers https://www.petrochemspecialities.com/psem-rms-dm-conventional-cationic-emulsifiers.htm https://www.petrochemspecialities.com/psem-rms-dm-conventional-cationic-emulsifiers.htm Tue, 16 Nov 2021 00:00:00 +0530 Description :“PSEM-RMS-DM” is low dose emulsifier for production of Rapid and Medium Setting Cationic Bitumen Emulsions. This product is liquid even at low temperatures so is convenient to use in both batch type and continuous type bitumen emulsion production plants. Emulsions made using recommended dose of this product show long storage stability and better tack in field. Physical Properties :“PSEM-RMS-DM” is brownish clear liquid at room temperature with characteristic ammoniacal acrid odor. This product is miscible with cold water, soluble in hot water and miscible with polar & hydrocarbon solvents. In recommended doses, it does not have any effect on physical properties of bitumen used for production of emulsions. This emulsifier provides a vide choice for production of different grades of bitumen emulsions including tack coat emulsion, surface dressing emulsion, penetration macadam, pot-hole patching, dust suppression emulsion etc. In more than recommended dose of this emulsifier is used for production of more stable emulsions, it does not have any bad effect on final properties of application. For activation of this emulsifier concentrated hydrochloric acid is recommended as economical and better choice. The final pH of water solution before making emulsion must be checked and adjusted to max 2. At this pH, “PSEM-RMS-DM” has highest micellization in soap solution favoring better stable emulsion. Any suitable Anti-stripping Agent (amine type) can be optionally mixed with bitumen before making emulsion for easy milling and lower particicle size distribution favoring better storage stability. Chemical Properties : Specific Gravity :  0.86 - 0.95 Amine Value:> 300 Active Nitrogen :  > 8.00 Water Content :< 2.0% Active content :100% Shelf Life : 2 Years from the date of production. Colour : Brownish clear liquid. Compatibility :  Bitumen VG-10 & VG-30. PSEM-SS-ABT Conventional Cationic Emulsifiers https://www.petrochemspecialities.com/psem-ss-abt-conventional-cationic-emulsifiers.htm https://www.petrochemspecialities.com/psem-ss-abt-conventional-cationic-emulsifiers.htm Tue, 16 Nov 2021 00:00:00 +0530 Description :“PSEM-SS-ABT” is amphoteric type emulsifier for production of Slow Setting Cationic Bitumen Emulsions. This product is liquid even at low temperatures so is convenient to use in both batch type and continuous type bitumen emulsion production plants. Emulsions made using recommended dose of this product give storage stable and fine performance products.Physical Properties :“PSEM-SS-ABT” is brownish yellow clear liquid at room temperature with characteristic pungent-acrid odor. This product is soluble in cold and hot water and miscible with polar solvents. Its water solution give neutral to slightly acidic pH. In recommended doses, it provides cationic bitumen emulsion passing cement mixing test for effective priming and premixing properties. Addition of a compatible peptizer greatly improve emulsion properties and cohesion buildup in slurry applications.This emulsifier provides a vide choice for production of different grades of slow setting bitumen emulsions including prime coat emulsion, slurry surfacing, fog seal, soil stabilization, cold in place recycling and microsurfacing etc. For activation of this emulsifier concentrated hydrochloric acid is recommended as economical and better choice. The final pH of water solution before making emulsion must be checked and adjusted between 2 to 3.  At this pH, “PSEM-SS-ABT” has highest micellization in soap solution favoring better stable emulsion. Any suitable peptizer can be optionally mixed with bitumen before making emulsion for easy milling and lower particle size distribution favoring better storage stability.   Chemical Properties : Specific Gravity :  0.86 - 0.95 Amine Value:N.M. Active Nitrogen :  N.M. pH Water (1:100) : 6 - 7 Active content :60% Shelf Life : 2 Years from the date of production. Colour : Brownish clear liquid. Compatibility :  Bitumen VG-10 & VG-30. PSEM-RMS-DMR Ready Emulsifiers https://www.petrochemspecialities.com/psem-rms-dmr-ready-emulsifiers.htm https://www.petrochemspecialities.com/psem-rms-dmr-ready-emulsifiers.htm Tue, 16 Nov 2021 00:00:00 +0530 Description :“PSEM-RMS-DMR” is pre-acidified emulsifier with added performance additives for on-site production of Rapid and Medium Setting Cationic Bitumen Emulsions. This product is liquid even at low temperatures so is very convenient to use compact batch type on-site bitumen emulsion plants. Emulsions made using recommended dose of this product pass standard tests and show very nice performance in field. Physical Properties :“PSEM-RMS-DMR” is dark color liquid at room temperature with acrid acidic odor. This product is miscible with cold water and highly soluble in hot water. In recommended doses, it does not have any effect on physical properties of bitumen used for production of emulsions. This emulsifier can be well used with VG-10 grade of bitumen and provides a vide choice for production of different grades of bitumen emulsions including tack coat emulsion, surface dressing emulsion, penetration macadam, pot-hole patching, dust suppression emulsion etc. Since this product has been pre-acidified, there is no need of handling and using additional acid which makes it safer for the production.Chemical Properties : Specific Gravity :  ~ 1.15 Flash Point:   > 130 Degree C Active Nitrogen :  ND Water Content :< 10% Active content :60% Shelf Life : 3 months from the date of production. Colour : Dark Turbid liquid. Compatibility :  Bitumen VG-10 & VG-30. PSEM-SS-ABTR Ready Emulsifiers https://www.petrochemspecialities.com/psem-ss-abtr-ready-emulsifiers.htm https://www.petrochemspecialities.com/psem-ss-abtr-ready-emulsifiers.htm Tue, 16 Nov 2021 00:00:00 +0530 Description :“PSEM-SS-ABTR” is pre-acidified emulsifier with added performance additives for on-site production of Slow Setting Cationic Bitumen Emulsions. This product is liquid even at low temperatures so is very convenient to use in compact batch type on-site bitumen emulsion plants. Emulsions made using recommended dose of this product pass standard tests and perform very well in field of application. Physical Properties :“PSEM-SS-ABTR” is dark color liquid at room temperature with acrid acidic odor. This product is miscible with cold water and highly soluble in hot water. In recommended doses, it does not have any effect on physical properties of bitumen used for production of emulsions. This emulsifier can be well used with VG-10 grade of bitumen and provides a vide choice for production of different grades of bitumen emulsions including prime coat emulsion, cold-mix emulsion, emulsion for soil stabilization, emulsion based repair grouts etc. Since this product has been pre-acidified, there is no need of handling and using additional acid which makes it safer for the production.  Chemical Properties : Specific Gravity :  ~ 1.10 Flash Point:   > 130 Degree C Active Nitrogen :  ND Water Content :< 10% Active content :50% Shelf Life : 3 months from the date of production. Colour : Dark Turbid liquid. Compatibility :  Bitumen VG-10 & VG-30. PSEM-FFA Anionic Emulsifiers https://www.petrochemspecialities.com/psem-ffa-anionic-emulsifiers.htm https://www.petrochemspecialities.com/psem-ffa-anionic-emulsifiers.htm Tue, 16 Nov 2021 00:00:00 +0530 Description :“PSEM-FFA” is chemically modified resinous natural polymer for production of Anionic Bitumen Emulsions of Rapid / Medium Setting grades. This product is thick viscous liquid which "melts" upon heating, so is better used in process in slightly warm stage. Emulsions made using recommended dose of this product pass standard tests and perform well in structural applications. Physical Properties :“PSEM-FFA” is thick dark brown color viscous liquid at room temperature with acrid resinous odor. This product is non miscible with hot or cold water and needs sodium / potassium hydroxide based pH increase to dissolve in hot water. In recommended doses, it does not have any effect on physical properties of bitumen used for production of emulsions. This emulsifier can be well used with VG-10 grade of bitumen and provides a vide choice for production of different grades of bitumen emulsions for structural applications.Use of a compatible poly-amine type anti-stripping agent in bitumen prior to making anionic bitumen emulsion, greatly improves emulsion properties and storage stability.  Chemical Properties : Specific Gravity :  ~ 0.95 Flash Point :  > 200 Degree C Acid Value :   > 300 Water Content :< 2% Active content :100% Shelf Life : 2 years months from the date of production. Colour : Dark Brownish turbid liquid. Compatibility :  Bitumen VG-10 & VG-30. Rejuvenator Liquid https://www.petrochemspecialities.com/rejuvenator-liquid.htm https://www.petrochemspecialities.com/rejuvenator-liquid.htm Tue, 16 Nov 2021 00:00:00 +0530 “Wetbond-REX” is a performance grade liquid rejuvenating additive for RAP based hot mix pavements. This is a versatile product which combine properties of Rejuvenation of old oxidized asphalt (present in RAP), Anti-stripping (Water damage protection) and Warm mix asphalt (better compaction on below normal compaction temperatures). Due to continuous exposure to environmental factors like UV radiation from sunlight, frictional heat generated from moving traffic tyres, freeze thaw, regular change in day and night road temperatures, deposition of clay, sand and other mineral substances on road surface and natural aging process of Bitumen, the bitumen used in construction of asphalt pavements becomes oxidized and brittle over a period of time. This results in loss of flexibility of asphalt layers, formation of cracks, potholes and finally complete failure. An important factor contributing to brittleness is loss of maltene part of bitumen which chiefly consists of resins, oils, oleifins, naphthenes, and natural polymers. During recycling of asphaltic pavements, a substantial quantity of Reclaimed asphalt (RAP) is produced which is generally wasted in the form of landfills. However by using a liquid rejuvenating additive capable of replenishing the lost maltene part and by adding a little quantity of fresh bitumen to this RAP, the same can be reused for fresh paving and provide a lot of savings in terms of materials, time and money. Micro-surfacing Emulsion https://www.petrochemspecialities.com/micro-surfacing-emulsion.htm https://www.petrochemspecialities.com/micro-surfacing-emulsion.htm Tue, 16 Nov 2021 00:00:00 +0530 Micro-surfacing is a high performance cold applied thin layer bituminous surfacing which is used for preventive maintenance and renewal treatment of flexible and rigid pavements. Since this technology is applied in thin layer even for high traffic roads and highways, it requires a special grade of Polymer Modified Bitumen Emulsion (PME) which rectifies surface defects including minor cracks, dry & hungry surfaces, wear and tear due to traffic movement. Also micro-surfacing is a quick traffic technology where its components are mixed and laid on road in single step process using special pavers, the Polymer Modified Bitumen Emulsion is custom made based on physical, chemical properties of aggregates, weather conditions and type of grading of aggregates. When applied on road, this PME sets fast, build cohesion quickly and allows opening of traffic within 1 hour. Petrochem Specialities had over 14 year experience in formulation of project specific Polymer Modified Micro-surfacing Emulsions using different types of high performance emulsifiers, variety of latex polymers and other performance additives. With well equipped laboratory having special testing equipment like Cohesion Tester, Wet-track Abrasion Tester, Schulze Breuer Tester, Boiling water Stripping Value apparatus, Consistency tester etc, we ensure best in class materials for our customers.   Wetbond-REX Rejuvenator Liquid https://www.petrochemspecialities.com/wetbond-rex-rejuvenator-liquid.htm https://www.petrochemspecialities.com/wetbond-rex-rejuvenator-liquid.htm Tue, 16 Nov 2021 00:00:00 +0530 Physical Properties :“WETBOND-REX” liquid is a dark brownish oily liquid at room temperature. This product has a characteristic smell.This product is internal rejuvenating liquid where it can be added in required dose with fresh bitumen to be used in RAP based hot-mix asphalt constructions. When added to the hot bitumen, it readily disperses with minimal stirring and lowers the surface tension of bitumen for easier wetting of RAP and the fresh aggregates. This product has special resins and polymers to replenish the lost maltene part of the oxidised bitumen present in RAP. "WETBOND-REX" has been thoroughly evaluated by the "Anulab, Agra".This product also have inherent anti-stripping and warm mix properties, it provides easy mixing even with cold RAP added in hot-mix plant pug mill, takes care of minor water present in RAP due to open storage and provides maintenance of temperature during transportation of mix to laying site and easy compaction even on lower than normal temperatures, so it provide un-comparable economy in its class.Mode of Action :“WETBOND-REX” is based on a balanced mixture of various natural ingredients which are very identical to maltene part of bitumen in addition to amine compounds and anti-oxidants. This product assist in replenishing the lost bitumen fractions & restore its flexibility. The additional components ensure better protection from re-oxidation, better resistance to water damage and easier compaction of RAP containing Hot-mix even at below normal compaction temperatures. This product also assist in formation of a stable covalent bond (bridge) between bitumen and surface of road aggregates.When “WETBOND-REX” treated hot bitumen is mixed with add-on aggregates and RAP, it provides dose dependent balanced diffusion into oxidized bitumen, thus ensure achievement of balanced Marshall Stability and flow values for the hot mix.Chemical Properties : Dose: 0.1 to 0.2% by weight of RAP ( 1 to 2 Kg per MT of RAP) Specific Gravity : 0.94 - 0.96 Flash Point: > 150 Degree Centigrade Pour Point : > 5 Degree Centigrade Water Content : < 1.0% Active content : 100% Shelf Life : 3 Years from the date of production in sealed containers. Colour : Dark Brownish thick liquid. Compatibility : All grades of Road and Industrial Bitumen / RAP. Advantages of WETBOND-REX :“WETBOND-REX” is oily liquid product for mixing with fresh hot bitumen.This product has several advantages over competitors : Optimum dose product. Provides additional advantage of anti-oxidant for hot mix surfaces. Assist in active bridge formation between Bitumen and aggregates. Gives excellent performance even with RAP having high degree of hardening. Additional water damage protection and warm mix asphalt properties. Provides exceptional economy as compared to competitor products. Procedure for dose calculation of WETBOND-REX :"WETBOND-REX” dose can be conveniently calculated and used in RAP based hot-mix pavement by following method: The percentage dose (by weight of RAP) of “WETBOND-REX”, sufficient to achieve the target Marshall stability and mix flow values is determined using Marshall Mix design method. The dose per cubic meter of hot mix is calculated in Kgs. From final mix design, the quantity of fresh bitumen required for total fresh aggregate + RAP in Kgs per cubic meter is calculated. The percentage of “WETBOND-REX” by weight of fresh bitumen is calculated by: (Quantity of “WETBOND-REX” in Kg per cubic meter / Quantity of fresh Bitumen in Kg per cubic meter) X 100 Based on above dose, required quantity of “WETBOND-REX” is added in bulk bitumen storage tank and stirred for 10 minutes. After that, the treated bitumen can be used as normal. Cooltar-CE (CQS) Micro-surfacing Emulsion https://www.petrochemspecialities.com/cooltar-ce-cqs-micro-surfacing-emulsion.htm https://www.petrochemspecialities.com/cooltar-ce-cqs-micro-surfacing-emulsion.htm Tue, 16 Nov 2021 00:00:00 +0530 Physical Properties : “COOLTAR-CE” CQS grade is fine dispersion of bitumen, latex polymers and performance additives in water stabilized by very special grades of high performance cationic emulsifiers and stabilizers. This PME is free flowing brown viscous liquid in cold state and is ready to use product at project site. Since the stone aggregates (specially Stone dust) and environmental conditions are different project locations, to ensure proper mixing of PME with other components of micro-surfacing in pug mill of special paver and then application of same on the road surface in a definite thickness, consistency and texture, each site requires a different mix design with change in PME formulation. The design process of COOLTAR-CE CQS grade starts with detailed analysis of stone dust and coarse aggregates collected from the project site. Based on gradation, reactivity and physical properties of these aggregates, different formulations of PME are made in lab scale bitumen emulsion plant and tested for mix properties and performance after setting.   Important Parameters of PME :  Polymer Modified Micro-surfacing Emulsions (PME) are the most important component of this technology as they have to bear the entire stress of traffic and environmental conditions to perform for years at application site. Since they are applied in a thickness of only 6 to 8 mm, it becomes even more important for the PME to provide: mechanical bonding, elastic strength, anti-oxidation properties, continuous mat, skid resistance, water repellency,  fine texture and prevent raveling. MoRTH and IRC:SP-81 have standard specifications for Micro-surfacing emulsions in India, which needs to be strictly followed to ensure stability of micro-surfacing layer for years. The most important parameters are Softening Point, Elastic Recovery, Penetration Value and Ductility of binder recovered after evaporation of water from the PME. The MoRTH and IRC also specify the tests to be conducted on micro-surfacing mix to estimate the performance in field which include Wet Cohesion Test, Consistency Test, Wet Track Abrasion Value, Boiling Water Stripping Test etc. We at Petrochem Specialities have complete laboratory setup including lab scale bitumen emulsion plant, complete testing equipment, mix design facility, reliable commercial scale bitumen emulsion batch plant, micro-surfacing machinery and after sales support system for our esteemed customers. Cationic Bitumen Emulsions https://www.petrochemspecialities.com/cationic-bitumen-emulsions.htm https://www.petrochemspecialities.com/cationic-bitumen-emulsions.htm Tue, 02 Nov 2021 00:00:00 +0530 COOLTAR-CE Cationic Bitumen Emulsion https://www.petrochemspecialities.com/cooltar-ce-cationic-bitumen-emulsion.htm https://www.petrochemspecialities.com/cooltar-ce-cationic-bitumen-emulsion.htm Tue, 16 Nov 2021 00:00:00 +0530 “COOLTAR-CE” is the Cationic Bitumen Emulsion produced by PETROCHEM SPECIALITIES through indigenously developed and more reliable batch process and confirms to Indian & International Standards. It is a Chocolate Brown free flowing liquid at room temperature, provides better adhesion and anti-stripping property than plain bitumen. It is cold application product that saves time and money in road construction and more importantly saves environment from air-pollution done by conventional hot process.Worldwide Cationic Bitumen Emulsions have widespread use in Road Construction (Cold-mix asphalt surfacing, Tack Coat, Prime Coat, Cold Recycling etc.) and maintenance (Potholes Filling, Slurry Seal, Microsurfacing etc.). These are recommended by Indian Road Congress (IRC) and Ministry of Shipping, Road Transport & Highways (MSRT&H) to be used in several applications e.g. cold-mix asphalt, Tack Coat, Primer Coat, Crack Sealing, Surface dressing etc. “COOLTAR-CE” has been specially designed to suit Indian weather conditions and application profile for better field performance.Types and Grades Available : As per Indian Standard (IS-8887:2018), five grades of Cationic Bitumen Emulsions are available: Rapid Setting (RS-1) : Provides rapid deposition - mainly used for Tack Coat. Rapid Setting (RS-2) : Provides rapid deposition – mainly used for Tack Coat and Surface Dressing. Medium Setting (MS) : A versatile grade, Provides Comparatively slower deposition, used for Repair work/surface dressing, Plant  or road mixes with coarse aggregates and Penetration macadam. Slow Setting-1 (SS-1) : Consumes long time to form bituminous film with best penetration on a porous medium, used for Prime coat, Crack sealing and Fog Seal. Slow Setting-2 (SS-2) : Low in solvents, provides slow deposition of bituminous film, used for plant or road mixes like MSS, SDBC, Slurry Seal and for Prime coat applications. A special grade of "Tailor Made" Cationic Bitumen Emulsion is also available for "COLD-MIX" asphalt surfacing.  The International Standard (ASTM D-2397) materials are available in following grades: Rapid Setting: CRS-1 & CRS-2 Medium Setting: CMS-2 & CMS-2h Slow Setting:   CSS-1 & CSS-1h Quick Setting: CQS-1H Advantages of COOLTAR-CE :Cold application of Bitumen Emulsions make them the most handy and efficient tool in road construction & maintenance. “COOLTAR-CE” is produced using 100% Indian raw-materials including special world-class emulsifiers and Bitumen. The advantages are: Can be used in damp-environment on wet aggregates. Any Road repair work can be carried out in minimum time. Provides better tack and workable conditions. Compatible with all types of common Indian aggregates. Can be used in any season except in excessively cold environment or during rainfall. Economical as compared to bitumen with no air-pollution (No heating required). Long storage stability in clean airtight container/Tank. Choice of viscosity for different application. Compatible with a range of Cationic Latex to produce Modified Bitumen Emulsion for use in latest resurfacing technologies. Tailor Made Cold-mix Bitumen Emulsion provide sufficient time for mixing and rapid cohesion buildup upon laying. Cationic Latex https://www.petrochemspecialities.com/cationic-latex.htm https://www.petrochemspecialities.com/cationic-latex.htm Tue, 02 Nov 2021 00:00:00 +0530 Modification of Bituminous products requires addition of an ingredient which changes the rheological properties specially elasticity, resistance to wear deformities etc. “CATLEX” is the cationic latex of Natural Rubber, which gives excellent cohesion properties and compatibility with Bitumen and emulsions. This Latex provides a better alternative to synthetic rubbers due to its better elastic properties and superior field performance required for cold mix bitumen technologies including micro-surfacing.   “CATLEX” is chemically modified and stabilized form of natural rubber latex. Catlex Cationic Latex https://www.petrochemspecialities.com/catlex-cationic-latex.htm https://www.petrochemspecialities.com/catlex-cationic-latex.htm Tue, 16 Nov 2021 00:00:00 +0530 Physical Properties :“CATLEX” is a fine suspension of positively charged particles of Natural Rubber in water under the balancing force of stabilizing agents. The pH is slightly acidic. The solid rubber obtained from “CATLEX” shows the same physical properties, as that of obtained from natural latex, however there is slight variation in affinity profile. It is freely miscible with all grades of cationic bitumen emulsions except oil based priming emulsions (invert emulsions).Since “CATLEX” is chemically modified with organic surface active agents and pH stabilizers, this product is not recommended for use in production of personal hygiene products, latex based laminates and industrial products sensitive to acidic pH. The sole recommended application remains in the field of cold mix asphalt applications specially Micro-surfacing, Cold-mix surfacing including premix carpet, bituminous macadam, bituminous concrete, fog seal, soil stabilization etc. This product provide cohesive strength, flexibility in low temperature area, prevention of UV oxidation, resistance to rutting, prevention of ravelling, protection from water damage and retention of surface texture. Source of Raw Material :Natural rubber latex is a milkionic Polyisoprene Latex. Specific Gravity: 0.98 - 1.02 Mechanical stability : 475 Sec Min. Coagulum content   :  0.05% Max pH : 2 - 4 Volatile fatty matter  : 0.15% Max. Elongation %: 400 Min. Shelf Life   : 1 Year from the date of production in sealed containers. Colour   : Yellowish white milky liquid. Compatibility: Cationic Bitumen Emulsions. Procedure for Blending :As “CATLEX” is readily dispersible in most grades of cationic bitumen emulsions, it can be conveniently mixed with pre-formed emulsions or in soap phase before emulsion production. The following mey colloidal solution obtained from Hevea brasiliensis plants. Natural rubber is extracted from plants by tapping and collecting the raw latex in cups or glazed pottery containers guided by GI sprout. The collected “field Latex” is processed by removing coagulated rubber and impurities by filtering, adding ammonia to prevent further coagulation, removal of proteins and concentrating the latex by centrifuge method & creaming. To ensure consistent quality, latex is selected from a fixed geographic location . Chemical Properties :Chemical Name   : Catthods can be used for its addition:Direct blending with ready emulsion  in storage drums / tank: Required quantity of CATLEX can be directly blended with ready emulsion in storage drums or tanks by simple addition and rolling / stirring the emulsion for 5 minutes. After stirring, the modified emulsion is ready for use as required. This method is recommended where prolonged storage of emulsion is expected, so CATLEX can be added at the time of use for better storage stability.Pre-addition to soap solution: Required quantity of CATLEX can be added to soap solution after adding emulsifier and acid to the hot water before making emulsion. This method provides more effective mixing as CATLEX treated soap solution is milled through colloid mill for high shear mixing. Recommended where modified emulsion is expected to be used earlier. Thickeners https://www.petrochemspecialities.com/thickeners.htm https://www.petrochemspecialities.com/thickeners.htm Tue, 02 Nov 2021 00:00:00 +0530 Thickeners are natural or synthetic substances which are used to increase the viscosity of a liquid system. A thickener can be liquid or a solid depending on the source of raw material and intended applications.   To increase the viscosity of bitumen emulsions, mostly the residual bitumen is increased which in turn increases the cost to a very high level and require higher dose of emulsifier and other additives. Few emulsifiers claim to increase the viscosity and storage stability of Cationic Bitumen Emulsion but a fine balance of dose is required as low dose do not increase viscosity and a slight higher dose develop lumps in final emulsion causing it to fail in sieve test. Also prolonged storage of Bitumen Emulsion in open under hot and cold conditions cause the Bitumen Emulsions to cream (separation of water and formation of hard bitumen layer) and site dilution of Bitumen Emulsions by road contractors causes the breaking of emulsions which are serious issues for emulsion manufacturers.   Cationic Bitumen Emulsions contains cationic emulsifiers which are stabilized using strong acids like HCl under very low pH. Most of the natural and synthetic thickeners are not stable on this pH and disintegrate within hours of addition causing sharp fall in viscosity. Our products are a class apart. PSEM-THX Liquid Thickener https://www.petrochemspecialities.com/psem-thx-liquid-thickener.htm https://www.petrochemspecialities.com/psem-thx-liquid-thickener.htm Tue, 16 Nov 2021 00:00:00 +0530 "PSEM-THX" is liquid thickener specially designed to remain stable in low pH conditions and can be conveniently blended with any Cationic Bitumen Emulsion. Unlike solid thickeners which require blending with soap water before making Bitumen Emulsion, "PSEM-THX" can be easily mixed after making bitumen emulsions and provide excellent viscosity increase with low dose requirement."PSEM-THX" in addition to increased viscosity, also make Bitumen Emulsions better stable on storage. A Cationic Bitumen Emulsion stabilized with "PSEM-THX" remains fully usable for minimum 1 year even when stored in open area during summers and winters. "PSEM-THX" also prevent breaking of Bitumen Emulsion on addition of water (even in high volumes).Physical Properties :Turbid white thick liquid at room temperature with characteristic odour,. Miscible with water and Cationic Bitumen Emulsions of all grades. Ready to use product for post-addition after formation and cooling of Bitumen Emulsion. Improves viscosity, storage stability and the water dilution properties of bitumen emulsion. Stable even on very low pH.Chemical Properties : Chemical Name   : Synthetic Polymer. Specific Gravity: ~ 1.0 Flash Point   : Not Flammable. Viscosity   : ~ 4000 cps. pH : 2 - 4 Shelf Life   : 1 Year from the date of production in sealed containers. Colour   : Yellowish white turbid liquid. Odor : Almost odorless. Compatibility: Most grades of Cationic Bitumen Emulsions. BeGel Solid Powder Thickener https://www.petrochemspecialities.com/begel-solid-powder-thickener.htm https://www.petrochemspecialities.com/begel-solid-powder-thickener.htm Tue, 16 Nov 2021 00:00:00 +0530 Bitumen Emulsions have a lot of variation in their viscosities depending on the type of bitumen used, type of emulsifier, dose of acid, particle size distribution etc. Most of the time an external viscosity improving agent is required to meet specifications and coating properties.Solid thickeners are the powders obtained from complex natural products modified by chemical cleavage and re-formation to provide stability in low pH medium. "BeGel" is a modified polygalactomanan type low dose product which is compatible with most grades of Bitumen Emulsion and emulsifiers. This product is added into hot water before formation of Bitumen Emulsion to obtain high viscosity.Physical Properties :Fine Power in light yellow colour with chararcteristic Odour, substantially non-hazardous but irritant on prolong contact. Dispersible in water, giving thick colloidal dispersion. Shows mild alkaline pH in water.Chemical Properties : Chemical Name   : Modified Galactomannan Water Content : Max. 15% Flash Point   : Not Flammable. Viscosity   : ~ 3000 cps (0.5% aqueous solution) pH : 8 - 9 (0.5% aqueous solution) Shelf Life   : 1 Year from the date of production in sealed bags. Colour   : Yellow Fine Powder. Odor : Characteristic. Compatibility: Most grades of Cationic Bitumen Emulsions. Typical Dose & Method of Addition :BeGel should be used between 0.1% to 0.5% w/w of Water. BeGel should be added to hot water (Temperature between 50 and 80 Degree centigrade) in smaller quantities using a dispersing device like sieving through 0.6 mm sieve with constant stirring to avoid lumping. Stirring should be continued for 15 minutes and then the liquid can be used normally in place of water. If lumping occurs, the liquid can be filtered through 0.6 mm sieve to avoid agglomeration.