Back to results
US 6,274,665 B1Granted
Method of preparing a molded sealing composition for sealing against permeation of carbon dioxide gas
AssigneeNok Corporation
InventorsShigeyuki Ono, Takashi Ohta, Hideyuki Tokumitsu, Hironori Minagawa, Osamu Kobayashi
Life of this patent
Estimating the term…
Abstract
An object of the present invention is to provide a molding composition having an excellent properties to seal carbon dioxide. The composition is made of fluoro thermoplastic elastomer having a reinforcing filler such as carbon black or white carbon having a particle diameter of not more than 100 nm. The composition can be used as a sealing materials such as O-ring, oil seal, gasket, hose, tube or diaphragm for sealing carbon dioxide.
Claims8
A method of preparing a molded sealing composition for sealing against permeation of carbon dioxide gas, comprising the steps of:
- (1) preparing a molding composition comprising a fluoro thermoplastic elastomer and a reinforcing filler having a particle size of not more than 100 nm;
- (2) molding said molding composition to obtain a vulcanized rubber composition;
- and
- (3) contacting said vulcanized rubber composition with carbon dioxide gas have carbon dioxide as a majority component to separate an air side from a carbon dioxide gas side.
1 more element
Dependencies are inferred from the claim text.