公开(公告)号：US20210380794A1

公开(公告)日：2021-12-09

申请号：US17411227

申请日：2021-08-25

Applicant: AGC Inc.

Inventor： Yukiko HATTORI ,  Tsuyoshi KAWAI ,  Takeshi YAMADA ,  Takehiro KOSE

IPC: C08L27/18 ,  C08F214/26 ,  C08J3/24 ,  C08L21/02

Abstract: To provide a method for producing crosslinked rubber excellent in hardness and transparency.
The method for producing crosslinked rubber of the present invention is a method for producing crosslinked rubber, which comprises crosslinking a fluorinated copolymer in a composition comprising the fluorinated copolymer, a crosslinking agent and a crosslinking co-agent, wherein the fluorinated copolymer is a copolymer having units based on tetrafluoroethylene and units based on a perfluoro(alkyl vinyl ether), the content of the units based on tetrafluoroethylene is from 65 to 90 mol % to all units of the fluorinated copolymer, in the composition, the content of the crosslinking agent is from 0.03 to 0.7 part by mass to 100 parts by mass of the fluorinated copolymer, the content of the crosslinking co-agent is from 0.1 to 2.5 parts by mass to 100 parts by mass of the fluorinated copolymer, and the hardness is from 65 to 100.

公开(公告)号：US20220227908A1

公开(公告)日：2022-07-21

申请号：US17658271

申请日：2022-04-07

Applicant: AGC Inc.

Inventor： Yukiko HATTORI ,  Tsuyoshi KAWAI ,  Takeshi YAMADA ,  Kuniaki AKATSU

IPC: C08F214/26

Abstract: To provide a fluorinated copolymer, whereby it is possible to produce a crosslinked rubber article excellent in mold release properties.
The fluorinated copolymer of the present invention has units based on tetrafluoroethylene, units based on a perfluoro(alkyl vinyl ether), units based on a monomer having a fluorine atom and at least two polymerizable unsaturated bonds, and units based on a monomer having a nitrile group and a fluorine atom.