公开(公告)号：US20210163648A1

公开(公告)日：2021-06-03

申请号：US17173455

申请日：2021-02-11

Applicant: AGC Inc.

Inventor： Satoko YASUDA ,  Takehiro KOSE ,  Yukiko HATTORI ,  Toshikazu YONEDA

IPC: C08F214/26 ,  C08F214/22 ,  C08F214/28 ,  C08F214/16 ,  C08F236/20 ,  C08L23/12

Abstract: To provide a fluorinated copolymer excellent in low temperature properties and crosslinking property as a fluororubber, and a method for producing it.
A fluorinated copolymer which has units based on tetrafluoroethylene, units based on propylene and units based on a compound represented by the following formula 1, and which has either one or both of iodine atoms and bromine atoms: CF2═CFO(Rf1O)nRf2  formula 1 wherein Rf1 is a C1-3 perfluoroalkylene group, Rf2 is a C1-6 perfluoroalkyl group, n is an integer of from 1 to 4, and in a case where n is from 2 to 4, a plurality of Rf1 may be the same or different.