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:
Apr. 14, 2020
Filed:
Nov. 04, 2014
Daicel Corporation, Osaka-shi, Osaka, JP;
Daicel Value Coating Ltd., Tokyo, JP;
Hiroshi Onomichi, Amagasaki, JP;
Katsuhiko Sumita, Himeji, JP;
Yoshimichi Okano, Himeji, JP;
Kanae Nishimura, Amagasaki, JP;
Kazuyuki Okada, Amagasaki, JP;
Takayuki Yaegashi, Himeji, JP;
Ken Suzuki, Fuji, JP;
DAICEL CORPORATION, Osaka-Shi, JP;
DAICEL VALUE COATING LTD., Tokyo, JP;
Abstract
A release layer of a release film for producing a membrane electrode assembly of a polymer electrolyte fuel cell comprises a cyclic olefin polymer comprising an olefin unit having a Calkyl group as a side chain thereof. The release layer may have a glass transition temperature of about 210 to 350° C. The release layer may have a transition point of a dynamic storage modulus E' in a range from −50 to 100° C. An ion exchange layer comprising an ion exchange polymer may be laminated on the release layer of the release film by a roll-to-roll processing to produce a laminate. The release film may be separated from the laminate to give the membrane electrode assembly. The release film achieves improved production of a membrane electrode assembly (an electrolyte membrane and/or an electrode membrane) of a polymer electrolyte fuel cell.