Impact modifier and thermoplastic resin compositions using...

Details Impact modifier and thermoplastic resin compositions using... Impact modifier and thermoplastic resin compositions using...

C - Chemistry, Metallurgy

08

L

400/3029

C08L 51/00 (2006.01) C08F 285/00 (2006.01) C08L 1/00 (2006.01) C08L 101/00 (2006.01)

Patent

CA 1235544

ABSTRACT OF THE DISCLOSURE An impact modifier comprising a blend of 100 parts by weight of a multi-layer graft copolymer composed of monomers selected from the group consisting of alkyl acrylates, alkyl methacrylates, aromatic vinyl compounds, vinyl cyanide compounds and butadienes and having a multi-layer structure consisting of at least three layers (A), (B) and (C) in which the glass transition temperature of the polymer composing the outermost layer (A) is 0°C or below, the glass transition temperature of the polymer composing the second layer (B) from the outermost layer (A) is 60°C or above and the glass transition temperature of the polymer composing the third layer (C) from the outermost layer (A) is 0°C or below, each of the layers containing a polyfunctional crosslinking agent in an amount of 0 to 5% by weight based on the weight of the layer, and 0.1 to 20 parts by weight of a copolymer obtained by copolymerizing 3 to 30% by weight of an unsaturated acid monomer and 97 to 70% by weight of a vinyl monomer copolymerizable therewith, and a thermo- plastic resin composition having excellent impact resistance and molding workability comprising 3 to 50 parts by weight of the modifier set forth above and 100 parts by weight of a thermoplastic resin.

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