Patent ID: 9725534
Date: 2017-08-08
CPC Classifications: C08F,F16L,Y10T

Claim:
1. A fluororesin comprising a copolymer that comprises copolymerized units derived from tetrafluoroethylene, vinylidene fluoride, and an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride, wherein the fluororesin has a storage modulus E′, as measured at 170° C. by a dynamic viscoelasticity analysis, in the range of 60 to 400 MPa, and a melting point of 216 to 290° C., and wherein the copolymer comprises 55.0 to 90.0 mol % of copolymerized units derived from tetrafluoroethylene, 5.0 to 44.9 mol % of copolymerized units derived from vinylidene fluoride, and 0.1 to 10.0 mol % of copolymerized units derived from an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride, the ethylenically unsaturated monomer being represented by the formula (1): wherein X