POLYMER BASED ON CTFE/VCA/HFP OR TFE/VCA/HFP

摘要

PPROBLEM TO BE SOLVED: To provide a polymer based on CTFE(chlorotrifluoroethylene)/VCA(vinylene carbonate)/HFP(hexafluoropropene) or TFE(tetrafluoroethylene)/VCA/HFP. PSOLUTION: A copolymer comprises at least three repeating units expressed by general formulae P1, P2 and P3, with a P2 unit content of 30-70% by mole, P1 and P3 unit contents of each 70-30% by mole and a weight-average molar mass (Mw) of the copolymer being 10SP3/SP-10SP6/SPg/mole. In the general formulae, XSP1/SP, XSP2/SPand XSP3/SPare each selected from the group consisting of H, F, Cl and Br atoms; RSP1/SPis selected from the group consisting of H, F, Cl and Br atoms; RSP2/SPis a carbon-containing group having the number of the carbon atoms of 1-10 which are each partially or perfectly fluorinated; YSP1/SPand YSP2/SPare each selected from the group consisting of H, F, Cl and Br atoms or from the group consisting of carbon-containing groups having the number of carbon atoms of 1-10; and YSP3/SPis a carbonyl group or a divalent carbon-containing group. PCOPYRIGHT: (C)2005,JPO&NCIPI