| abstract |
The fluorine-containing copolymer takes (A), (B) and (C) as copolymerization units, and is obtained by copolymerizing component (C) in a proportion of 0.01wt% to 5wt% in the whole copolymer, wherein (A) is obtained by general Formula: C n F 2n+1 (CH 2 CF 2 ) a (CF 2 CF 2 ) b (CH 2 CH 2 ) c OCOCR=CH 2 [I](R: hydrogen atom or methyl group, n: 1-6 , a: 1-4, b: 1-3, c: 1-3) polyfluoroalkyl alcohol (meth)acrylic acid derivatives; (B) is represented by the general formula: CH 2 =CRCOOR 3 [III]( R is a hydrogen atom or a methyl group, R 3 : a fluorine-free (meth)acrylate represented by a C 1 -C 30 linear, branched or cyclic hydrocarbon group that may contain an oxygen atom; (C) is represented by the following formula: Formula: CH 2 =CRCOO(H) p (R 4 Y) q [IV] (R: hydrogen atom or methyl group, p, q: 0 or 1 and p+q: 1, R 4 : which may contain an oxygen atom A functional group-containing (meth)acrylic acid or its ester represented by a C 1 -C 30 linear, branched or cyclic hydrocarbon group, Y: phosphoric acid group or epoxy group). |