C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/3034
C08L 51/04 (2006.01) C08L 25/08 (2006.01) C08L 25/16 (2006.01) C08L 51/00 (2006.01)
Patent
CA 1217291
ABSTRACT OF THE DISCLOSURE A thermoplastic resin composition having excel- lent impact resistance and heat resistance which comprises 5 to 95% by weight of a graft copolymer (I) obtained by polymerizing 93 to 30 parts by weight of a monomer or a monomer mixture for grafting comprising 30 to 100% by weight of at least one monomer selected from the group consisting of styrene, .alpha.-methylstyrene, acrylonitrile and methyl methacrylate and 0 to 70% by weight of at least one copolymerizable monomer having Image group in the presence of 7 to 70 parts by weight (in terms of solid) of a rubber latex of agglomerated particles having a particle diameter of at least 0.2 µm obtained by adding 0.1 to 5 parts by weight (in terms of solid) of an acid-group containing copolymer (B) latex obtained from 3 to 30% by weight of an acid group containing monomer, 97 to 35% by weight of at least one alkyl acrylate having 1 to 12 carbon atoms in the alkyl group, and 0 to 48% by weight of at least one monovinyl monomer copolymerizable therewith (100% by weight in total) to 100 parts by weight (in terms of solid) of a rubber (A) latex of small particle size having a pH of 7 or above obtained from 100 to 50% by weight of 1,3-butadiene and 0 to 50% by weight of other copoly- merizable monomer having Image group (100% by weight in total); 95 to 5% by weight of a thermoplastic resin (II) obtained by polymerizing .alpha.-methylstyrene and at least one other copolymerizable monomer having Image group; and 0 to 50% by weight of other thermoplastic resin (III) containing no .alpha.-methylstyrene unit, said components (I), (II) and (III) being compounded so as to give a content of said butadiene rubber (A) in the whole composition of 3 to 40% by weight and a content of .alpha.-methylstyrane unit in the whole composition of 10 to 75% by weight.
468637
Kishida Kazuo
Sato Yasumasa
Yamamoto Naoki
Meredith & Finlayson
Mitsubishi Rayon Co. Ltd.
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