Tetrafluoroethylene/perfluoro (alkyl vinyl ether) copolymer and for its production
AssigneeAsahi Glass Company, Limited
InventorsNaoko Sumi, Atsushi Funaki, Masao Umino
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Abstract
A tetrafluoroethylene(TFE)/perfluoro (alkyl vinyl ether) (PVE) copolymer and a method for producing the copolymer, wherein the molar ratio of polymerized units based on TFE/polymerized units based on PVE is in the range of from 98.1/1.9 to 95.0/5.0, and its melt flow rate at 372° C. is from 35 to 60 g/10 min., and a weight-average molecular weight/a number-average molecular weight is from 1 to 1.7. The copolymer of TFE/PVE is excellent in the mechanical properties and the injection molding properties.
Claims13
A tetrafluoroethylene/perfluoro (alkyl vinyl ether) copolymer comprising polymerized units (A) based on tetrafluoroethylene and polymerized units (B) based on a perfluoro (alkyl vinyl ether), wherein the molar ratio of (A)/(B) is in the range of from 98.1/1.9 to 95.0/5.0, and its melt flow rate at 372° C. is from 35 to 60 g/10 min., and MW/Mn is from 1 to 1.7 (Mw is a weight-average molecular weight and Mn is a number-average molecular weight).
Dependencies are inferred from the claim text.