Fluorine-containing copolymer
AssigneeDaikin Industries, Ltd.
InventorsTadaharu ISAKA, Yumi Zenke, Yukari Yamamoto
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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═CF2 and —CH2OH per 106 main-chain carbon atoms of 90 or less.
Claims7
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═CF2 and —CH2OH per 106 main-chain carbon atoms of 90 or less.
Dependencies are inferred from the claim text.