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:
Dec. 21, 2010
Filed:
Apr. 17, 2008
Atsushi Funaki, Tokyo, JP;
Hiroki Kamiya, Tokyo, JP;
Atsushi Funaki, Tokyo, JP;
Hiroki Kamiya, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To provide a method for producing a melt-processable fluororesin, which is capable of increasing the molecular weight of the fluororesin and preventing coloration of the fluororesin, by using a specific fluorinated emulsifier other than ammonium perfluorooctanoate. A method for producing a melt-processable fluororesin which is characterized in that a fluorinated monomer is emulsion-polymerized in an aqueous medium containing a fluorinated emulsifier of a formula (I) XCFCF(O)CFCFOCFCOOA wherein X is a hydrogen atom or a fluorine atom, A is a hydrogen atom, an alkali metal or NH, and m is an integer of 0 or 1.