Styrene-co-acrylonitrile copolymers

E4 polystyrene-Z)/ocA -[l,4-polybutadiene-grq/Z -poly(styrene-co-acrylonitrile)] (copolymer from styrene and acrylonitrile grafted to a 1,4-polybutadiene-polystyrene two-block copolymer at unspecified sites of some of the but-2-ene-... 

The influence in the decomposition rate has been seen for example in the poly(styrene-co-acrylonitrile) copolymers. The elimination of HCN from the side chain of the polymer generates double bonds in the backbone. The decomposition of the polymer is significantly accelerated in this case, since the cleavage of the backbone in the p-position to the double bond is facilitated [17]. In other cases, such as in the copolymers of methylmethacrylate with acrylonitrile, the rate of decomposition is decreased around 220° C and the yield of monomer diminished [18]. 

In the 1950s Borg-Warner, which first commerciahzed ABS, introduced the product having well-balanced mechanical and heat resistance properties by developing the ABS final product utilizing a-methyl styrene-co-acrylonitrile copolymer. 

Choi, Y.S. Xu, M. Chung, I.J. Synthesis of exfoliated poly(styrene-co-acrylonitrile) copolymer/silicate nanocomposite by anulsion pol3miaization monomer composition effect on morphology. Polymer 2003, 44, 6989-6994. 

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