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:
May. 07, 2019
Filed:
Mar. 17, 2016
Mitsui Chemicals, Inc., Minato-ku, Tokyo, JP;
Hayato Kurita, Ichihara, JP;
Mizuki Wakana, Ichihara, JP;
Takahiro Kondo, Ichihara, JP;
Hideki Mochizuki, Chiba, JP;
Yuji Noguchi, Funabashi, JP;
Tatsuya Sakai, Ichihara, JP;
MITSUI CHEMICALS, INC., Tokyo, JP;
Abstract
Provided is a thermoplastic elastomer composition with which it is possible to obtain a molded article having exceptional low-temperature impact resistance. A thermoplastic elastomer composition is produced that contains a crystalline olefin polymer (A) and an ethylene-α-olefin (C)-unconjugated polyene copolymer (B) that satisfies requirements (1) and (2). (1) The B value represented by the equation: ([EX]+2[Y])/(2×[E]×([X]+[Y])) is 1.20 or higher. [E], [X] and [Y] respectively indicate the molar fraction of structural units derived from ethylene, the molar fraction of structural units derived from Cα-olefin and the molar fraction of structural units derived from unconjugated polyene, and [EX] indicates the diad chain fraction of structural units derived from ethylene-structural units derived from Cα-olefin. (2) The molar ratio of structural units derived from ethylene with respect to structural units derived from α-olefin (C) of copolymer (B) is 40/60-90/10.