公开(公告)号：US11332561B2

公开(公告)日：2022-05-17

申请号：US16830643

申请日：2020-03-26

Applicant: AGC Inc.

Inventor： Takeshi Yamada ,  Toshifumi Kakiuchi ,  Aya Serita ,  Masahide Yodogawa

IPC: C08F214/26 ,  C09D7/61 ,  C09D7/20 ,  C08K3/04 ,  C08K3/36 ,  C08L27/18 ,  C09D127/18 ,  C09J127/18

Abstract: To provide a fluorinated elastic copolymer composition such that solubility of a fluorinated elastic copolymer in a solvent is excellent, the solvent is easily removed, and the solvent is easily available.
A fluorinated elastic copolymer composition comprising a fluorinated elastic copolymer having units based tetrafluoroethylene and units based on CF2=CFORf1 (wherein Rf1 is a C1-10 perfluoroalkyl group), and a fluorinated solvent having a perfluorohydrocarbon group, wherein the perfluorohydrocarbon group having the largest number of carbon atoms in the fluorinated solvent has from 3 to 7 carbon atoms, the fluorinated solvent has a boiling point of from 50 to 160° C., and the fluorinated solvent has a fluorine atom content (fluorine atom content (mass %)=(19× number of fluorine atoms in the fluorinated solvent/molecular weight of the fluorinated solvent)×100) of from 69 to 80 mass %.

公开(公告)号：US20200223965A1

公开(公告)日：2020-07-16

申请号：US16830643

申请日：2020-03-26

Applicant: AGC Inc.

Inventor： Takeshi Yamada ,  Toshifumi Kakiuchi ,  Aya Serita ,  Masahide Yodogawa

IPC: C08F214/26 ,  C08L27/18 ,  C08K3/04 ,  C08K3/36 ,  C09J127/18 ,  C09D127/18 ,  C09D7/20 ,  C09D7/61

Abstract: To provide a fluorinated elastic copolymer composition such that solubility of a fluorinated elastic copolymer in a solvent is excellent, the solvent is easily removed, and the solvent is easily available.A fluorinated elastic copolymer composition comprising a fluorinated elastic copolymer having units based tetrafluoroethylene and units based on CF2=CFORf1 (wherein Rf1 is a C1-10 perfluoroalkyl group), and a fluorinated solvent having a perfluorohydrocarbon group, wherein the perfluorohydrocarbon group having the largest number of carbon atoms in the fluorinated solvent has from 3 to 7 carbon atoms, the fluorinated solvent has a boiling point of from 50 to 160° C., and the fluorinated solvent has a fluorine atom content (fluorine atom content (mass %)=(19×number of fluorine atoms in the fluorinated solvent/molecular weight of the fluorinated solvent)×100) of from 69 to 80 mass %.

公开(公告)号：US12264238B2

公开(公告)日：2025-04-01

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：US11732073B2

公开(公告)日：2023-08-22

申请号：US16705441

申请日：2019-12-06

Applicant: AGC Inc.

Inventor： Yukiko Hattori ,  Takeshi Yamada ,  Takehiro Kose

IPC: C08F214/26 ,  C08F14/26 ,  C08K5/00 ,  C08F2/38

CPC classification number: C08F214/262 ,  C08F2/38 ,  C08F14/26 ,  C08K5/0025 ,  C08F2800/10 ,  C08F2810/20

Abstract: To provide a fluorinated elastic copolymer and a fluorinated elastic copolymer composition, whereby it is possible to obtain a crosslinked rubber article which has practically sufficient rubber physical properties and which is, at the same time, excellent in low-temperature characteristics; a crosslinked rubber article; and a method for producing a fluorinated elastic copolymer. The fluorinated elastic copolymer comprises units based on tetrafluoroethylene, units based on CF2═CFORf1 (Rf1 is a C1-10 perfluoroalkyl group), units based on CF2═CF(OCF2CF2)n—(OCF2)m—ORf2 (Rf2 is a C1-4 perfluoroalkyl group, n is an integer of from 0 to 3, m is an integer of from 0 to 4, and n+m is an integer of from 1 to 7), and units based on a fluorinated monomer having at least two polymerizable unsaturated bonds.