Patent ID: 8080195
Filing Date: 2011-12-20
Classification: C08F,Y10T

Abstract:
1. A method of producing a fluoropolymer by which a melt-processable fluoropolymer (A) having a specific unstable terminal group or groups (P) is subjected to melt-kneading in a kneader comprising a stabilization treatment zone to thereby produce a fluoropolymer (B) resulting from conversion of said specific unstable terminal group or groups (P) to —CF 2 H, said specific unstable terminal group or groups (P) comprising alkoxycarbonyl groups and/or fluoroalkoxycarbonyl groups, the melt-kneading being carried out in the absence or presence of an alkali metal element or alkaline earth metal element, the content of said alkali metal element or alkaline earth metal element being not greater than 2 ppm of the composition under melt-kneading, and the melt-kneading in said stabilization treatment zone being carried out in the presence of water.