| 摘要 |
PURPOSE:To obtain the title copolymer excellent in transparency and compatibility with methyl methacrylate polymer and useful as a material for paints, by copolymerizing 1,1-difluoroethylene with a specified monomer and a fluoroolefin. CONSTITUTION:1,1-Difluoroethylene is copolymerized with a functional group- containing monomer of formula I (wherein X is -OH, a group of formula II or -COOH, m is 0-10 and n is 1-4) and a fluoroolefin of formula III (wherein Y is Cl, F or trifluoromethyl) at 0-150 deg.C and a pressure <=50kg/cm<2>.G to obtain the title copolymer of mol.wt. of 10,000-500,000, comprising 50-99mol% structural units of formula IV, 1-50mol% structural units of formula V and 30mol% or below structural units of formula VI. This copolymer is mixed with a curing agent (e.g., hexamethylene diisocyanate) to obtain a room temperature-curing fluororesin paint. |
