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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 :
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:
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
“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
Conventional Anti-stripping Agents
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