Non-carboxylated styrene-butadiene copolymers, preparation method and use thereof

摘要

A non-carboxylated styrene-butadiene copolymer, preparation method and use thereof are provided. The non-carboxylated styrene-butadiene copolymer is prepared by hot polymerization in the absence of acid monomers and is used in asphalt-based systems such as asphalt emulsions.

主权项

1. A method of making a styrene-butadiene copolymer dispersion, comprising:
polymerizing styrene and butadiene in an aqueous medium at a temperature of 40° C. or greater to produce an uncured styrene-butadiene copolymer, wherein said polymerizing step occurs in the absence of acid monomers and produces a non-carboxylated styrene-butadiene copolymer; and mixing a sulfur curing agent with the non-carboxylated styrene-butadiene copolymer, said curing agent allowing the non-carboxylated styrene-butadiene copolymer to cure.