Fluorine-containing copolymer
AssigneeDaikin Industries, Ltd.
InventorsTadaharu ISAKA, Yumi ZENKE, Yukari YAMAMOTO
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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 11.5 to 12.5% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0 to 0.5% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.8 to 4.0 g/10 min, and a total number of —CF2H, carbonyl group-containing terminal groups, —CF═CF2 and —CH2OH of 50 or less per 106 main-chain carbon atoms.
Claims8
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 11.5 to 12.5% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0 to 0.5% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.8 to 4.0 g/10 min, and a total number of —CF2H, carbonyl group-containing terminal groups, —CF═CF2 and —CH2OH of 50 or less per 106 main-chain carbon atoms.
Dependencies are inferred from the claim text.