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:
Jul. 04, 2006
Filed:
Nov. 22, 2004
Shigeki Kobayashi, Chiba, JP;
Shinya Higuchi, Chiba, JP;
Masataka Arai, Chiba, JP;
Hiroki Nagai, Chiba, JP;
Shigeki Kobayashi, Chiba, JP;
Shinya Higuchi, Chiba, JP;
Masataka Arai, Chiba, JP;
Hiroki Nagai, Chiba, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
Provided are a tetrafluoroethylene copolymer excellent in paste extrudability, which comprises a unit based on tetrafluoroethylene and a unit based on a monomer represented by a formula of CF═CF—O—(CF)CF═CF(wherein n is an integer of from 1 to 6), wherein a content of the unit based on the monomer represented by the formula is from 0.1 to 0.5% by mass, wherein a particle size of a primary particle is from 0.1 to 0.5 μm, wherein a standard specific gravity is from 2.14 to 2.25, wherein a paste extrusion pressure is from 24.5 to 73.5 MPa and wherein the copolymer remains not undergoing melt molding; a fine powder of a tetrafluoroethylene copolymer; and a production method and a paste extruded product thereof. The TFE copolymer is excellent in paste extrudability and the molded product thereof is excellent in heat resistance and transparency.