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:
Mar. 07, 2006
Filed:
Mar. 16, 2005
Kazuya Oharu, Yokohama, JP;
Hidekazu Okamoto, Yokohama, JP;
Shin Tatematsu, Yokohama, JP;
Shigeki Kobayashi, Chiba, JP;
Shinya Higuchi, Chiba, JP;
Masataka Arai, Chiba, JP;
Hiroki Nagai, Chiba, JP;
Kazuya Oharu, Yokohama, JP;
Hidekazu Okamoto, Yokohama, JP;
Shin Tatematsu, Yokohama, 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 is a tetrafluoroethylene copolymer consisting of a unit based on tetrafluoroethylene and a unit based on a monomer represented by CF═CFORR(where Ris a polyfluoroalkylene group which may contain an etheric oxygen atom and Ris a polyfluorocycloalkyl group which may contain an etheric oxygen atom), wherein a content of the latter is from 0.005 to 0.5% by mass. The tetrafluoroethylene copolymer is excellent both in paste extrudability and in heat resistance, has characteristics such as excellent transparency of a molded product, and is suitably applicable to paste extrusion and compression molding.