Patent ID: 8703870
Filing Date: 2014-04-22
Classification: C08J,C08L

Abstract:
1. A method for producing a thermoplastic elastomer composition, the method comprising a first kneading step of melt-kneading 1 to 50 parts by weight of a non-petroleum source-derived thermoplastic resin (B) and 0.01 to 20 parts by weight of a modified ethylene-based copolymer (C) to produce a resin composition precursor, and a second kneading step of melt-kneading the resin composition precursor, 10 to 90 parts by weight of an ethylene-α-olefin based copolymer rubber (A), 1 to 50 parts by weight of a propylene-based polymer (D), and 0 to 50 parts by weight of a mineral oil-based softening agent (F) in the presence of 0.001 to 5 parts by weight of a crosslinking agent (E), wherein the amounts of the components (A), (B), (D), and (F) added are amounts calculated where the total amount of the components (A), (B), (D), and (F) added is considered to be 100 parts by weight, and the amounts of the component (C) and the component (E) added are amounts calculated where the total amount of the components (A), (B), (D), and (F) added is considered to be 100 parts by weight.