According to the position of the film-forming auxiliary in the polymer, it is divided into three types: A, B, and C. The emulsion uses water as a continuous phase and is composed of hydrophobic polymer chain spherical micelles stably formed by emulsifiers. The position of the film-forming aid added to the emulsion system in the system depends on its hydrophobicity / hydrophilicity.
Among them, type A in the emulsion polymer is mainly hydrocarbons such as petroleum ether, such as turpentine, dipentene pine oil, tenhydrocae, etc .; Type AB is mainly at the interface between the emulsion polymer and water, which is mainly diester and Alcohol esters, such as Texanol ester alcohol, Lusolvan FBH, DBE-IB, COASOL; ABC type is mainly between polymer particles, on the boundary and in water, mainly glycol esters and glycol ester ethers, glycol butyl ether (EB), propylene glycol phenyl ether (PPH), dipropylene glycol monomethyl ether DPM; Type C in water, mainly alcohols, glycols, such as ethanol, diethylene glycol, dipropylene glycol, triethylene glycol. In traditional classification, it can be divided into oil-soluble and water-soluble from the aspect of compatibility with polymers.