Patent ID: 7417085

Claim:
A thermoplastic resin composition consisting essentially of: 100 parts by weight of a thermoplastic resin, (A) 0.001 to 1 part by weight of at least one antioxidant selected from compounds of formula (A-I): wherein R 1 , R 2 , R 4 and R 5 independently represent hydrogen, C 1-8 alkyl, C 5-8 cycloalkyl, C 6-12 alkylcycloalkyl, C 7-12 aralkyl, or phenyl, R 3 represents hydrogen, or C 1-8 alkyl, X represents a single bond, sulfur atom, or —CHR 6 —, wherein R 6 represents hydrogen, C 1-8 alkyl, or C 5-8 cycloalkyl, A represents C 2-8 alkylene, or a group of formula: *—COR 7 —, wherein R 7 represents a single bond or C 1-8 alkylene, and the bond indicated by * means that said bond is connected with the phosphite oxygen atom of the formula (A-I), either one group of Y and Z represents hydroxyl, C 1-8 alkoxy, or C 7-12 aralkyloxy, and the other group represents hydrogen or C 1-8 alkyl, and provided that when Y is hydroxyl one of R 4 and R 5 represents C 3-8 alkyl, C 5-8 cycloalkyl, C 6-12 alkylcycloalkyl, C 7-12 aralkyl or phenyl, and two R 1 groups, two R 2 group and two R 3 groups each may be the same or different, (B) 0.001 to 150 parts by weight of an inorganic anti-blocking agent having a solid acid in the amount of 50 μmol or less per 1 g of the inorganic anti-blocking agent, and optionally (C) at least one additive selected from the group consisting of: phenolic antioxidants other than the antioxidant (A), phosphorus antioxidants other than the antioxidant (A), lubricants, anti-static agents, and pigments.