Fluorine-containing copolymer

Patent metadata

Field	Value
Publication number	US-2025011487-A1
Application number	US-202418888343-A
Country	US
Kind code	A1
Filing date	Sep 18, 2024
Priority date	Mar 30, 2022
Publication date	Jan 9, 2025
Grant date	—

Abstract

There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 11.4 to 12.2% by mass with respect to the whole of the monomer units, a content of perfluoro (propyl vinyl ether) unit of 0.9 to 1.78 by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 4.0 to 13.0 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF 2 and —CH 2 OH per 10 6 main-chain carbon atoms of 90 or less.

First claim

1 . A fluorine-containing copolymer, comprising:
tetrafluoroethylene unit; hexafluoropropylene unit; and perfluoro (propyl vinyl ether) unit,
wherein the copolymer has: a content of hexafluoropropylene unit of 11.4 to 12.2% by mass with respect to the whole of the monomer units;
a content of perfluoro (propyl vinyl ether) unit of 0.9 to 1.7% by mass with respect to the whole of the monomer units;
a melt flow rate at 372° C. of 4.0 to 13.0 g/10 min; and
a total number of a carbonyl group-containing terminal group, —CF═CF 2 and —CH 2 OH per 10 6 main-chain carbon atoms of 90 or less.

2 . The fluorine-containing copolymer according to claim 1 , wherein the copolymer has a content of hexafluoropropylene unit of 11.5 to 12.0% by mass with respect to the whole of the monomer units.

3 . The fluorine-containing copolymer according to claim 1 , wherein the copolymer has a content of perfluoro (propyl vinyl ether) unit of 1.0 to 1.5% by mass with respect to the whole of the monomer units.

4 . The fluorine-containing copolymer according to claim 1 , wherein the copolymer has a melt flow rate at 372° C. of 5.0 to 11.0 g/10 min.

5 . The fluorine-containing copolymer according to claim 1 , wherein the copolymer has the number of —CF 2 H per 10 6 main-chain carbon atoms of 50 or more.

6 . An injection molded article comprising the fluorine-containing copolymer according to claim 1 .

7 . A coated electric wire comprising a coating layer comprising the fluorine-containing copolymer according to claim 1 .

Assignees

• Daikin Ind Ltd

Inventors

• Isaka Tadaharu
• ZENKE Yumi
• Yamamoto Yukari

Classifications

• C09D127/18

  Homopolymers or copolymers of tetrafluoroethene · CPC title

• C08F214/262 Primary

  with fluorinated vinyl ethers · CPC title

• H01B3/445 Primary

  from vinylfluorides or other fluoroethylenic compounds · CPC title

• H01B3/24

  containing halogen in the molecules, e.g. halogenated oils · CPC title

• H01B7/02

  Disposition of insulation · CPC title