Patent ID: 7569323

Claim:
A resist protective coating material comprising a polymer comprising repeat units (A) and/or (B) having the general formula (1): wherein R 1 to R 4 are hydrogen, or a pair of R 1 and R 2 and a pair of R 3 and R 4 , taken together, form a methylene or ethylene group, R 5 is fluorine or trifluoromethyl, R 6 is hydrogen, methyl, fluorine, or trifluoromethyl, and the subscripts m and n each are an integer of 1 to 3, and repeat unit having alkali-soluble groups in the form of α-fluoroalcohol groups of the general formula (2): wherein R 7 and R 8 are hydrogen, methyl, fluorine, or trifluoromethyl, either one of R 7 and R 8 contains at least one fluorine atom, the repeat units (A), (B) and (C) being included in proportions a, b, and c in the range: 0≦a<1.0, 0≦b<1.0, 0<c<1.0 and 0<a+b<1.