Title:
RUBBER COMPOSITION FOR SEALING FUEL CELL, SEAL MEMBER FOR FUEL CELL, AND FUEL CELL IN WHICH SAME ARE USED
Document Type and Number:
WIPO Patent Application WO/2021/200127
Kind Code:
A1
Abstract:
A seal member 4, comprising a rubber composition containing at least one substance selected from the group consisting of silane coupling agents and (meth)acrylic monomers having a carboxylic acid group, a hydroxy group, or an amide group and containing the following components (A) to (C) at specific ratios, is used as a seal member for a fuel cell. The seal member 4 has excellent flexibility, excellent stretching properties in a large temperature range from low to high temperatures, and excellent sealing performance. The seal member 4 makes it possible to reduce damage to an electrolyte membrane. (A) At least one polymer selected from the group consisting of polyisoprene, polybutadiene, polyurethane, polyester, and poly(meth)acrylate having a (meth) acryloyl group. (B) A monofunctional (meth)acrylic monomer having a glass transition temperature of 0°C or lower. (C) A monofunctional (meth) acrylic monomer having a glass transition temperature of 50°C or higher.
Inventors:
TANIGUCHI SHOTA (JP)
NIMURA YASUNORI (JP)
YAMAMOTO KENJI (JP)
NIMURA YASUNORI (JP)
YAMAMOTO KENJI (JP)
Application Number:
PCT/JP2021/010669
Publication Date:
October 07, 2021
Filing Date:
March 16, 2021
Export Citation:
Assignee:
SUMITOMO RIKO CO LTD (JP)
International Classes:
H01M8/0284; C08F290/04; C09K3/10; H01M8/10
Foreign References:
| JP2015017237A | 2015-01-29 | |||
| JP2015026571A | 2015-02-05 | |||
| JP2020019939A | 2020-02-06 | |||
| JP2016094581A | 2016-05-26 | |||
| JP2004507063A | 2004-03-04 | |||
| JPH0366719A | 1991-03-22 |
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
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