| 摘要 |
PURPOSE:To obtain the title copolymer which can give a vulcanized fluoroelastomer excellent in resistance to heat, solvent, weathering, ozone, creeping etc., by copolymerizing two specified fluorinated monomers. CONSTITUTION:0.1-10wt% SO2F group-containing fluorinated monomer (A) of formula I (wherein l is 0-1, m is 0-2 and n is 1-4), e.g., a monomer of formula II is copolymerized with 99.5-90wt% 2-11 C fluorinated monomer (B) having one C-C double bond in the molecule (e.g., vinylidene fluoride) and optionally 0.05-10wt% fluorinated diene monomer (C) (e.g., formula III) at -10-200 deg.C, preferably, -10-50 deg.C and a pressure of 1-100kg/cm<2> in the presence of a polymerization initiator. |
