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：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 %.