C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/2003
C08L 51/00 (2006.01) C08F 285/00 (2006.01) C08L 25/08 (2006.01) C08L 33/00 (2006.01) C08L 51/04 (2006.01) C08L 55/02 (2006.01)
Patent
CA 1146296
ABSTRACT OF THE DISCLOSURE A resin composition for use in uncoated exterior materials markedly excellent in appearance and having high impact resistance and weather resistance wherein 10-70% by weight of a graft copolymer (I) having a high rubber content, 90-30% by weight of a rigid thermoplastic resin (II) comprising 10-90% by weight of at least one aromatic vinyl monomer and 90-10% by weight of at least one ethylenic unsaturated monomer having the following general formula: CH2=CRX wherein R represents hydrogen or CH3 group and X represents CN or COOR1 group (R1 represents alkyl group having 1-8 carbon atoms), and 0-50% by weight of a diene rubber-containing thermoplastic resin (III) are blended together so that the total amount of components (I) through (III) is 100% by weight, said graft copolymer (I) having a high rubber content being obtained by polymerizing 50-10% by weight of a monomer mixture (c) comprising 10-90% by weight of at least one aromatic vinyl monomer and 90-10% by weight of at least one ethylenic monomer having the following general formula: CH2=CRX wherein R represents hydrogen or CH3 group and X represents CN or COORl group (R1 represents alkyl group having 1-8 carbon atoms) in the presence of a latex of a crosslinked acrylic rubber having a multi-layer structure which contains, in its particle, 5-30% by weight of a rigid crosslinked resin (a) having a core particle diameter of 0.25-0.40 µ and of which outer layer part is constructed of 45-85% by weight of a crosslinked acrylic ester type polymer (b) constituted mainly of an acrylic ester, so that the total amount of components (a) through (c) is 100% by weight.
367638
Hasegawa Akira
Kawachi Yasunori
Kishida Kazuo
Meredith & Finlayson
Mitsubishi Rayon Co. Ltd.
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