Patent ID: 6908959

Claim:
A thermoplastic resin composition, which is a copolymer comprising: [A] 100 parts by weight of a polyacetal resin or thermoplastic aromatic polyester resin, [B] 0.1 to 20 parts by weight of a graft polymer in which (B-2) a vinyl (co)polymer component comprising at least one vinyl compound is graft-polymerized on (B-1) an olefin polymer as a backbone polymer, and [C] 0.1 to 10 parts by weight of a non-grafted liquid ethylene/α-olefin random copolymer consisting of ethylene, an α-olefin having 3 to 20 carbon atoms, and optionally a non-conjugated diene, said copolymer formed by a process consisting of copolymerization of said ethylene, α-olefin and optionally said non-conjugate diene components, which random copolymer has: (i) a proportion of a structural unit derived from ethylene of from 20 to 80 mol % and a proportion of a structural unit derived from α-olefin of from 20 to 80 mol % based on all structural units, with said structural units of ethylene and α-olefin being present in a total amount ranging from 90 to 100 mol %, (ii) a number average molecular weight (Mn) of from 500 to 10000, (iii) a molecular weight distribution (Mw/Mn) determined by a ratio of a weight average molecular weight (Mw) to a number average molecular weight (Mn) of from 1.2 to 3, and (iv) a pour point of lower than 20° C.