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 (JP)
YOKOO MASAHIRO (JP)
YOKOO MASAHIRO (JP)
Application Number:
PCT/JP2018/043254
Publication Date:
May 31, 2019
Filing Date:
November 22, 2018
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
F16J15/10; C08K3/04; C08K3/36; C08L27/12; F16J15/12
Domestic Patent References:
| WO2015159818A1 | 2015-10-22 | |||
| WO2012137724A1 | 2012-10-11 |
Foreign References:
| JP2011057986A | 2011-03-24 | |||
| JP2006299277A | 2006-11-02 | |||
| JP2006022212A | 2006-01-26 | |||
| JP2010064291A | 2010-03-25 | |||
| JP2003334885A | 2003-11-25 | |||
| JP2010090327A | 2010-04-22 |
Other References:
See also references of EP 3715680A4
Attorney, Agent or Firm:
YOSHIDA Toshio et al. (JP)
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