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US 2023/0416431 A1Published application
Fluorine-containing copolymer
AssigneeDaikin Industries, Ltd.
InventorsTadaharu ISAKA, Yukari Yamamoto, Yumi Zenke
Life of this patent
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Abstract
There is provided a fluorine-containing copolymer containing tetrafluoroethylene unit, hexafluoropropylene unit and a fluoro(alkyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 5.0 to 7.5% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0.8 to 2.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.7 to 9.5 g/10 min, and the number of functional groups of 90 or less per 106 main-chain carbon atoms.
Claims10
A fluorine-containing copolymer, comprising:
- tetrafluoroethylene unit;
- hexafluoropropylene unit;
- and a fluoro(alkyl vinyl ether) unit,
- wherein the copolymer has a content of hexafluoropropylene unit of 5.0 to 7.5% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0.8 to 2.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.7 to 9.5 g/10 min, and a total number of —CF═CF2, —CF2H, —COF, —COOH, —COOCH3, —CONH2 and —CH2OH of 90 or less per 106 main-chain carbon atoms.
1 more element
Dependencies are inferred from the claim text.