Patent ID: 6337371
Filing Date: 2002-01-08
Classification: C08L

Abstract:
A thermoplastic resin composition with excellent long-term heat-aging properties, consisting essentially of:(I) 10 to 45% by weight of a rubber-modified thermoplastic resin produced by graft polymerizing at least one monomer selected from the group consisting of aromatic vinyl compounds, vinyl cyanide compounds and other vinyl monomers copolymerizable therewith in the presence of a rubber-like polymer, the graft ratio of the polymerizate being 10 to 100% and the intrinsic viscosity &eegr; of the methyl ethyl ketone solubles at 30Â° C. being 0.2 to 0.8 dl/g; (11) 5 to 30% by weight of a thermoplastic resin produced by copolymerizing monomers comprising 50-90% by weight of an aromatic vinyl compound, 10-20% by weight of a vinyl cyanide compound and 0-30% by weight of another vinyl monomer copolymerizable therewith, the intrinsic viscosity &eegr; of the methyl ethyl ketone solubles at 30Â° C. being 0.3 to 0.6 dl/g; and (III) 50 to 70% by weight of a polycarbonate resin, the total amount of (I), (II) and (III) being 100% by weight, and wherein the content of the vinyl cyanide compound in the entire composition being 3 to 12% by weight, the polycarbonate resin is at least one dihydroxyarryl compound as a starting material, which dihydroxarryl compound is bis(4-hydroxyphenyl)methane, 1,1â€²-bis(4-hydroxyphenyl)ethane, 2,2â€²-bis(4-hydroxyphenyl) propane, 2,2â€²-bis(4-hydroxyphenyl)butane, 2,2â€²-bis(4-hydroxyphenyl)octane, 2,2â€²-bis(4-hydroxyphenyl)phenylmethane, 2,2â€²-bis(4-hydroxy-3-methylphenyl)propane, 2,2â€²-bis(4-hydroxy-3-t-butylphenyl)propane, 2,2â€²-bis(4-hydroxy-3-bromophenyl)propane, 2,2â€²-bis(4-hydroxy-3,5-dichlorophenyl)propane, 1,1â€²-bis(4-hydroxyphenyl)cyclopentane, 1,1â€²-bis(4-hydroxyphenyl)cyclohexane, 4,4â€²-dihydroxydiphenyl ether, 4,4â€²-dihydroxy-3,3â€²-dimethyldiphenyl ether, 4,4â€²-dihydroxyphenyl sulfide, 4,4â€²-dihydroxy-3,3â€²-dimethylphenyl sulfide, 4,4â€²-dihydroxy-3,3â€²-dimethylphenyl sulfoxide, 4,4â€²-dihydroxyphenyl sulfoxide, 4,4â€²-dihydroxyphenylsulfone, 4,4â€²-dihydroxy-3,3â€²-dimethylphenylsulfone, 1,1â€²-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 1,1â€²-bis(4-hydroxyphenyl)-3,3-dimethylcyclohexane, 1,1â€²-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclopentane, hydroquinone, or resorcin.