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:
Oct. 26, 2010
Filed:
Apr. 13, 2007
Shunji Kasai, Settsu, JP;
Makoto Ono, Settsu, JP;
Taku Yamanaka, Settsu, JP;
Yasuhiko Sawada, Settsu, JP;
Shunji Kasai, Settsu, JP;
Makoto Ono, Settsu, JP;
Taku Yamanaka, Settsu, JP;
Yasuhiko Sawada, Settsu, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
The invention provides a TFE polymer capable of providing stretched materials excellent in membrane homogeneity. The present invention is related to a tetrafluoroethylene polymer having stretchability and non-melt-processability and having a standard specific gravity of 2.140 to 2.165, wherein, with regard to the heat-of-fusion curve obtained by subjecting the tetrafluoroethylene polymer in the form of an unbaked polymer to be measured having no history of being heated to a temperature of 300° C. or higher to differential scanning calorimetry at a programming rate of 2° C./minute, the ratio S/Sis not lower than 0.90.