Patent ID: 8288462

Claim:
A polyolefin-based resin composition, characterized by comprising, with respect to 100 parts by mass of a polyolefin-based resin, 0.01 to 1 parts by mass of at least one crystal nucleating agent selected from the group consisting of: a crystal nucleating agent (A) having a structure in which at least 4 carbamate groups represented by the following Formula (1) are linked via a C 1 -C 10 hydrocarbon group: wherein, R 1 represents a hydrogen atom, a C 1 -C 12 alkyl group which is optionally branched, a C 3 -C 12 cycloalkyl group which is optionally substituted or a C 6 -C 18 aryl group which is optionally substituted; and the plural R 1 s are each optionally different; a crystal nucleating agent (B) represented by the following Formula (2): wherein, X 1 is a C 1 -C 5 alkylene group which is optionally branched; R 2 to R 5 independently represent one selected from the group consisting of a halogen atom, a C 1 -C 4 alkyl group which is optionally substituted and/or is optionally branched and a C 1 -C 4 alkoxy group which is optionally substituted and/or is optionally branched; and p, q, r and s independently represent an integer of 0 to 3 (provided that p and s are not 0); a crystal nucleating agent (C) represented by the following Formula (3): wherein, R 6 and R 7 independently represent a C 3 -C 12 cycloalkyl group which is optionally substituted; and X 2 and X 3 independently represent a single bond or a C 1 -C 5 alkylene group; provided that the substituent(s) is/are not a hydroxyl group; a crystal nucleating agent (D) represented by the following Formula (4): wherein, R 8 and R 9 independently represent a hydrogen atom, a C 1 -C 12 alkyl group which is optionally branched and/or is optionally substituted, a C 3 -C 12 cycloalkyl group which is optionally substituted or a C 6 -C 18 aryl group which is optionally substituted; R 8 and R 9 optionally form a C 6 -C 18 ring with a carbon atom at a terminal of the hydrazone structure; and X 4 represents a C 1 -C 10 alkylene group which is optionally branched and/or is optionally substituted, a C 3 -C 12 cycloalkylene group which is optionally substituted or a C 6 -C 20 arylene group which is optionally substituted; a crystal nucleating agent (E) represented by the following Formula (5): wherein, R 10 represents a hydrogen atom, a C 1 -C 12 alkyl group which is optionally branched and/or is optionally substituted, a C 3 -C 12 cycloalkyl group which is optionally substituted or a C 6 -C 18 aryl group which is optionally substituted; and X 5 represents a C 1 -C 10 alkylene group which is optionally branched and/or is optionally substituted, a C 3 -C 12 cycloalkylene group which is optionally substituted or a C 6 -C 20 arylene group which is optionally substituted; and a crystal nucleating agent (F) represented by the following Formula (13): wherein, R 19 and R 20 independently represent a C 1 -C 12 alkyl group which is optionally branched.