Patent ID: 8211981

Claim:
A poly(4-methyl-1-pentene) resin composition comprising: 0-90 parts by mass of 4-methyl-1-pentene homopolymer (A); and 10-100 parts by mass of 4-methyl-1-pentene copolymer (B) which has a unit derived from 4-methyl-1-pentene and a unit derived from a C 2-20 α-olefin other than 4-methyl-1-pentene, the total amount of homopolymer (A) and copolymer (B) being 100 parts by mass, wherein the amount of the unit derived from a C 2-20 α-olefin other than 4-methyl-1-pentene is 0.1-2.1 mass % based on the total amount of 4-methyl-1-pentene homopolymer (A) and 4-methyl-1-pentene copolymer (B), and the resin composition further comprises 0.1-800 ppm of nucleating agent (C) based on the total weight of 4-methyl-1-pentene homopolymer (A) and 4-methyl-1-pentene copolymer (B).