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1. (WO2018105531) COATING AGENT FOR RUBBER-COATED CYLINDER HEAD GASKETS, AND CYLINDER HEAD GASKET

Pub. No.:    WO/2018/105531    International Application No.:    PCT/JP2017/043338
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 02 00:59:59 CET 2017
IPC: F02F 11/00
B32B 15/06
C09D 7/40
C09D 175/04
C09K 3/10
F16J 15/08
Applicants: NICHIAS CORPORATION
ニチアス株式会社
Inventors: WATANABE Tomokazu
渡邉 智和
KITAJIMA Nahoko
北嶋 菜穂子
MORI Hideaki
森 英明
NAKAJIMA You
中島 蓉
Title: COATING AGENT FOR RUBBER-COATED CYLINDER HEAD GASKETS, AND CYLINDER HEAD GASKET
Abstract:
A coating agent for rubber-coated cylinder head gaskets, which is characterized in that: a lubricant and a urethane resin are contained therein; the lubricant is composed of uncalcined polytetrafluoroethylene resin particles having an average primary particle diameter of 1 μm or less; and the content of the uncalcined polytetrafluoroethylene resin particles in the solid contents is 30-80% by volume. Consequently, the present invention is able to provide: a coating agent for rubber-coated cylinder head gaskets, which is capable of forming a coating film that has excellent wear resistance at high contact pressure under high temperature conditions, and makes the adhesion of a rubber layer to the sealing surface of a cylinder block or a cylinder head less likely after use at high contact pressure under high temperature conditions; and a cylinder head gasket which is obtained using this coating agent for rubber-coated cylinder head gaskets.