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:
Feb. 22, 2005
Filed:
Aug. 11, 2003
Isamu Kaneko, Kanagawa, JP;
Yoko Takebe, Kanagawa, JP;
Isamu Kaneko, Kanagawa, JP;
Yoko Takebe, Kanagawa, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A fluoropolymer having repeating units formed by cyclopolymerization of a functional group-containing fluorinated diene represented by the following formula:CF═CR-Q-CR═CH  (1)wherein each of Rand Rwhich are independent of each other, is a hydrogen atom, a fluorine atom, an alkyl group having at most 3 carbon atoms, or a fluoroalkyl group having at most 3 carbon atoms, and Q is a bivalent organic group having a functional group bonded thereto, and a production method which comprises subjecting the above diene to radical polymerization. The polymer has a high Tg and a functional group concentration sufficient to exhibit the characteristics thereof.