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US 12,540,208 B2Granted
Copolymer, molded body, injection molded body, and coated electrical wire
AssigneeDaikin Industries, Ltd.
InventorsTadaharu Isaka, Yumi Zenke, Yukari Yamamoto, Hayato Tsuda
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Abstract
A copolymer containing tetrafluoroethylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro (propyl vinyl ether) unit of 3.5 to 4.2% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 18.0 to 22.0 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.
Claims4
A copolymer, comprising tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit,
- wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 3.5 to 4.2% by mass with respect to the whole of the monomer units,
- a melt flow rate at 372° C. of 18.0 to 22.0 g/10 min, and
- the total number of —CF═CF2, —CF2H, —COF, —COOH, —COOCH3, —CONH2 and —CH2OH of 50 or less per 106 main-chain carbon atoms.
Dependencies are inferred from the claim text.