Multi-layer structure polymer and resin composition

Details Multi-layer structure polymer and resin composition Multi-layer structure polymer and resin composition

C - Chemistry, Metallurgy

08

L

400/5044, 117/47

C08L 25/12 (2006.01) C08F 285/00 (2006.01) C08J 7/04 (2006.01) C08L 33/10 (2006.01)

Patent

CA 2010257

A multi-layer structure polymer (A) comprising (i) 2 to 30% by weight of an alkyl methacrylate unit, (ii) 50 to 80% by weight of an alkyl acrylate unit, (iii) 5 to 20% by weight of an unsaturated nitrile unit and (iv) 5 to 40% by weight of an aromatic vinyl unit, wherein: (a) the multi-layer structure polymer consists essentially of an inner layer and an outer layer in a ring form, the portion of the inner layer (.beta. layer) within the ring has an average diameter of 2,000 to 6,500 .ANG., (b) the outer layer (.alpha. layer) portion surround- ing the inner layer in the ring form has an average thickness of 200 to 500 .ANG., (c) the inner layer portion has a plurality of small particles (.gamma. layer) totally micro-dispersed, and (d) the multi-layer structure polymer has an acetone-insoluble portion having (i) a swell degree in methyl ethyl ketone of 1.5 to 10 and (ii) a tensile modulus of 1,000 to 10,000 kg/cm, a resin composition having excellent weatherability and impact resistance comprising the multi-layer structure polymer (A) and at least one thermoplastic resin, and a molded article produced therefrom.

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