Patent ID: 8546587

Claim:
An acrylic ester derivative represented by formula (I): wherein n is 0, 1 or 2, wherein when n is 0, R 5 and R 8 each represent independently a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms or a cyclic alkyl group having 3 to 6 carbon atoms; R 6 and R 7 each represent independently a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms or a cyclic alkyl group having 3 to 6 carbon atoms or R 6 and R 7 are combined to represent an alkylene group having 3 to 6 carbon atoms; or wherein when n is 1 or 2, R 5 , R 6 , R 7 , R 8 , R 9 and R 10 each represent independently a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms or a cyclic alkyl group having 3 to 6 carbon atoms; R 1 represents a hydrogen atom, methyl or trifluoromethyl group; and the combination of R 2 , R 3 , R 4 together satisfy one of: (1) R 2 , R 3 and R 4 each represent independently a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms or a cyclic alkyl group having 3 to 6 carbon atoms; (2) R 2 and R 3 are combined to represent an alkylene group having 3 to 6 carbon atoms, and R 4 represents a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms or a cyclic alkyl group having 3 to 6 carbon atoms; or (3) R 2 represents a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms or a cyclic alkyl group having 3 to 6 carbon atoms, and R 3 and R 4 are combined to represent an alkylene group having 3 to 6 carbon atoms.