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Title:
GASKET MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/103113
Kind Code:
A1
Abstract:
A gasket material using a fluororubber composition on a metal plate, the fluororubber composition being obtained by mixing 30-70 weight parts of carbon black having a CTAB specific surface area of 3-34 m2/g, and 5-15 weight parts of water-containing amorphous silicon dioxide having a BET specific surface area of 35-220 m2/g, the total amount of both substances being 80 weight parts or less, per 100 weight parts of fluororubber, a fluororubber crosslinked layer being formed having microhardness of 5-25. This rubber laminated metal plate is obtained by forming on the metal plate a crosslinked layer of a fluororubber composition obtained by blending carbon black having a specified specific surface area with water-containing amorphous silicon dioxide (silica) into a specified amount of fluororubber, whereby a fluororubber crosslinked layer is formed having a microhardness of 5-25, preferably 10-20, and a D hardness of 45-65, preferably 50-60, and the rubber laminated metal plate can be effectively used as a cylinder head gasket material.

Inventors:
TAKEKAWA Daiki (Tsujidoshinmachi 4-chome Fujisawa-sh, Kanagawa 42, 〒2510042, JP)
YOKOO Masahiro (Miyado Nihonmatsu-sh, Fukushima 11, 〒9640811, JP)
Application Number:
JP2018/043254
Publication Date:
May 31, 2019
Filing Date:
November 22, 2018
Export Citation:
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Assignee:
NOK CORPORATION (12-15, Shibadaimon 1-chome Minato-k, Tokyo 85, 〒1058585, JP)
International Classes:
F16J15/10; C08K3/04; C08K3/36; C08L27/12; F16J15/12
Domestic Patent References:
WO2015159818A12015-10-22
Foreign References:
JP2011057986A2011-03-24
JP2006299277A2006-11-02
JP2006022212A2006-01-26
JP2010064291A2010-03-25
JP2003334885A2003-11-25
Attorney, Agent or Firm:
YOSHIDA Toshio et al. (YOSHIDA PATENT OFFICE No.401, Esty Maison Shirokanedai Bldg. 1-4, Kami-Osaki 1-chome, Shinagawa-k, Tokyo 21, 〒1410021, JP)
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