The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 2017
Filed:
Feb. 12, 2013
Method for producing thermoplastic elastomer composition, and method for producing composite article
Sumitomo Chemical Company, Limited, Chuo-ku, Tokyo, JP;
Nobuhiro Natsuyama, Ichihara, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A method for producing a thermoplastic elastomer composition includes: (1) a step of dynamically vulcanizing 50 to 90% by weight of (A) an oil-extended ethylene-α-olefin-based copolymerized rubber and 10 to 50% by weight of (B) a propylene-based resin, where the total amount of the oil-extended ethylene-α-olefin-based copolymerized rubber (A) and the propylene-based resin (B) is taken as 100% by weight, in the presence of a crosslinking agent, thereby obtaining a thermoplastic elastomer, wherein the oil-extended ethylene-α-olefin-based copolymerized rubber (A) contains 100 parts by weight of an ethylene-α-olefin-based copolymer rubber having a Mooney viscosity (ML100° C.) of 150 to 350 at 100° C. and 20 to 150 parts by weight of a mineral oil-based softening agent, and (2) a step of kneading 100 parts by weight of the thermoplastic elastomer and 15 to 120 parts by weight of (C) an ethylene-based copolymer containing unsaturated carboxylic acid units, thereby obtaining the thermoplastic elastomer composition.