High impact styrene/acrylonitrile polymer blend compositions

Details High impact styrene/acrylonitrile polymer blend compositions High impact styrene/acrylonitrile polymer blend compositions

C - Chemistry, Metallurgy

08

L

C08L 23/28 (2006.01) C08K 3/16 (2006.01) C08K 5/098 (2006.01) C08L 25/12 (2006.01) C08L 23/22 (2006.01)

Patent

CA 2267236

Styrene/acrylonitrile (SAN) resin compositions are provided having both improved room temperature impact properties as well as good weatherability. The compositions comprise a mixture of SAN resin, an elastomeric halogenated copolymer comprising a C2 to C12 monoolefin, e.g. isobutylene, and a ring- substituted alkylstyrene, e.g., para-methylstyrene, and a compatibilizing agent such as zinc stearate.

Cette invention concerne des compositions de résines à base de styrène/acrylonitrile (SAN), lesquelles possèdent de meilleures propriétés de résistance aux impacts à température ambiante ainsi qu'une bonne résistance aux intempéries. Ces compositions consistent en un mélange comprenant les éléments suivants: une résine SAN; un copolymère halogéné et élastomère comprenant une mono-oléfine C¿2? à C¿12? tel que de l'isobutylène; un alkylstyrène substitué au niveau de l'anneau tel qu'un para-méthylstyrène; et enfin, un agent de comptabilité tel que du stéarate de zinc.

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