C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 77/00 (2006.01) C08L 51/06 (2006.01) C08L 77/02 (2006.01) C08L 77/06 (2006.01) C08L 23/16 (2006.01)
Patent
CA 2237921
A polyamide resin composition superior in the shock resitance, especially low temperature shock resistence, in the rigidity and in the water absorption resistance, which comprises (A) 98 - 50 % by weight of a polyamide, (B) 1 - 40 % by weight of a modified ethylene/ .alpha.- olefin copolymer having an MFR (190 °C ) of 0.05 - 50 g/10 min., obtained by a graft-copolymerization of 100 parts by weight of an ethylene/.alpha. -olefin copolymer (B-1) having an ethylene content of 40 - 93 mole % and a density of lower than 0.900 g/cm3, with, grafted thereon, 0.01 - 5 parts by weight of an unsaturated dicarboxylic acid or its derivative (B-2), and (C) 1 - 40 % by weight of at least one ethylenic copolymer selected from the group consisting of an ethylene/.alpha. -olefin copolymer (C-1) having an .alpha. -olefin content of 10 mole % or less, an Mw/Mn of 2.5 or lower and an MFR (190 °C) of 0.05 - 50 g/10 min. and a modified ethylen/ .alpha.-olefin copolymer (C-2) obtained by a graft-copolymeriza- tion of 100 parts by weight of the ethylene/ .alpha.- olefin copolymer (C-1) with, grafted thereon, 0.01 - 5 parts by weight of the unsaturated dicarboxylic acid or its derivative (B-2), wherein the weight ratio of (B)/(C) is in the range of 20 - 0.05.
Hayakawa Youji
Tanaka Yasuo
Mitsui Chemicals Inc.
Smart & Biggar
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