公开(公告)号：US20220204675A1

公开(公告)日：2022-06-30

申请号：US17655416

申请日：2022-03-18

Applicant: AGC Inc.

Inventor： Tsuyoshi KAWAI

IPC: C08F259/08 ,  C08K5/14 ,  C08K5/50

Abstract: To provide a fluorinated copolymer composition whereby a crosslinked rubber article having a low compression set at high temperature can be formed, and a crosslinked rubber article.
The fluorinated copolymer composition of the present invention comprises a fluorinated copolymer, an organic peroxide, a compound having at least two polymerizable unsaturated bonds and a phosphorus compound having a melting point of 60° C. or lower.

公开(公告)号：US20230128396A1

公开(公告)日：2023-04-27

申请号：US18069624

申请日：2022-12-21

Applicant: AGC Inc.

Inventor： Masatoshi ABE ,  Mizuna TOYODA ,  Tsuyoshi KAWAI ,  Shotaro BEPPU

IPC: C09D127/18 ,  C09D7/20 ,  C08F214/26 ,  C08F210/06 ,  C08F2/38 ,  C08K5/14 ,  C08K5/29 ,  C08J3/24 ,  C08J3/28

Abstract: A coating material of the present invention is a coating material containing: a fluorine-containing polymer having at least one of an iodine atom and a bromine atom; and a solvent, wherein a storage elastic modulus G′ of the fluorine-containing polymer is less than 360 kPa, and a total light transmittance of a mixed liquid obtained by mixing and stirring the fluorine-containing polymer and the solvent contained in the coating material is 1.0% or more, the mixed liquid being left to stand for 3 days, stirred again, and left to stand for 30 minutes to measure the total light transmittance.

公开(公告)号：US20240026048A1

公开(公告)日：2024-01-25

申请号：US18480619

申请日：2023-10-04

Applicant: AGC Inc.

Inventor： Yukiko HATTORI ,  Tsuyoshi KAWAI

IPC: C08F214/26 ,  C08F236/20 ,  C08C19/12 ,  C08C19/22 ,  C08K5/14 ,  C08K5/3492

CPC classification number: C08F214/262 ,  C08F236/20 ,  C08C19/12 ,  C08C19/22 ,  C08K5/14 ,  C08K5/34924

Abstract: To provide a fluorinated copolymer capable of producing a cross-linked rubber article with excellent mold-releasing properties, a method for producing the fluorinated copolymer, a fluorinated copolymer composition, and a cross-linked rubber article. The fluorinated copolymer of the present invention is a fluorinated copolymer having 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, wherein when the storage modulus of the fluorinated copolymer at an angular frequency of 0.3 rad/s is G′0.3 and the storage modulus of the fluorinated copolymer at an angular frequency of 0.03 rad/s is G′0.03 as determined by dynamic viscoelasticity measurement at 140° C., G′0.3/G′0.03 is from 1.00 to 1.45.

公开(公告)号：US20220396683A1

公开(公告)日：2022-12-15

申请号：US17884613

申请日：2022-08-10

Applicant: AGC INC.

Inventor： Tsukasa USUDA ,  Yoshitomi MORIZAWA ,  Tsuyoshi KAWAI

IPC: C08K5/3415 ,  C07D207/452 ,  C08F116/20

Abstract: Provided are a fluorine-containing copolymer composition containing a fluorine-containing copolymer and a fluorine-containing compound having two maleimide groups, and a cross-linked product thereof, and a compound.

公开(公告)号：US20220356338A1

公开(公告)日：2022-11-10

申请号：US17872132

申请日：2022-07-25

Applicant: AGC Inc.

Inventor： Tsuyoshi KAWAI

IPC: C08L27/18

Abstract: To provide a fluorinated copolymer composition whereby a crosslinked rubber article which has a low compression set at high temperature and which is not broken after compression can be formed, and a crosslinked rubber article.
The fluorinated copolymer composition of the present invention comprises a fluorinated copolymer (A) having units having a nitrile group and units based on tetrafluoroethylene, a fluorinated copolymer (B) having units having at least one functional group selected from the group consisting of a group having a carbonyl group, a hydroxy group, an epoxy group and an isocyanate group and units based on tetrafluoroethylene, and a crosslinking agent.

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：US20220356339A1

公开(公告)日：2022-11-10

申请号：US17872145

申请日：2022-07-25

Applicant: AGC Inc.

Inventor： Tsuyoshi KAWAI

IPC: C08L27/18 ,  C08L33/18

Abstract: To provide a fluorinated copolymer composition whereby a crosslinked rubber article which has a low compression set at high temperature and which is not broken after compression can be formed, and a crosslinked rubber article.
The fluorinated copolymer composition of the present invention comprises a fluorinated copolymer having nitrile groups, a phosphorus compound having a melting point of 60° C. or lower and a crosslinking agent.

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.