Fluorine-containing copolymer
AssigneeDaikin Industries, Ltd.
InventorsYukari YAMAMOTO, Tadaharu Isaka, Yumi Zenke, Yasukazu Nakatani
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Abstract
There is provided 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 9.7 to 10.3% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0 to 0.3% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.80 to 1.30 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 50 or less.
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 9.7 to 10.3% by mass with respect to the whole of the monomer units;
- a content of the fluoro(alkyl vinyl ether) unit of 0 to 0.3% by mass with respect to the whole of the monomer units;
- a melt flow rate at 372° C. of 0.80 to 1.30 g/10 min;
- and
- a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 50 or less.
Dependencies are inferred from the claim text.