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:
Dec. 06, 2011
Filed:
Mar. 14, 2007
Mitsuru Kishine, Settsu, JP;
Hirofumi Nishibayashi, Settsu, JP;
Toshiki Ichisaka, Settsu, JP;
Kazuo Kobayashi, Ichihara, JP;
Ryuji Tachibana, Ichihara, JP;
Tadashi Okawa, Ichihara, JP;
Katsumi Kihara, Chiyoda, JP;
Mitsuru Kishine, Settsu, JP;
Hirofumi Nishibayashi, Settsu, JP;
Toshiki Ichisaka, Settsu, JP;
Kazuo Kobayashi, Ichihara, JP;
Ryuji Tachibana, Ichihara, JP;
Tadashi Okawa, Ichihara, JP;
Katsumi Kihara, Chiyoda, JP;
Daikin Industries, Ltd., Osaka, JP;
Dow Corning Corporation, Midland, MI (US);
Abstract
The present invention provides a novel fluorine-containing rubber composite material having both of excellent fuel impermeability and excellent cold resistance, a fuel impermeable sealing material comprising the composite material and a process for preparing the composite material. The fluorine-containing rubber composite material comprises crosslinked particles of fluorine-containing silicone rubber dispersed in a fluorine-containing rubber. It is preferable that the fluorine-containing rubber comprises a vinylidene fluoride/tetrafluoroethylene/perfluoro vinyl ether copolymer, and the composite material has cold resistance of not more than −35° C. and fuel permeability of not more than 500 g·mm/m·day. The fuel impermeable sealing material comprises the composite material. The process for preparing the composite material comprises a step for co-coagulation of a fluorine-containing rubber emulsion and an emulsion of crosslinked fluorine-containing silicone rubber.