Patent ID: 8481660

Claim:
A mixture of fluoroalkyl alcohol-unsaturated carboxylic acid derivatives represented by the general formulae: CF 3 (CF 2 ) n (CH═CF) a (CF 2 CF 2 ) b (CH 2 CH 2 ) c OCOCR═CH 2 (Ia) and CF 3 (CF 2 ) n−1 (CF═CH) a CF 2 (CF 2 CF 2 ) b (CH 2 CH 2 ) c OCOCR═CH 2 (Ib) wherein R is a hydrogen atom or a methyl group, n is an integer of 1 to 5, a is an integer of 1 to 4, b is an integer of 0 to 3, and c is an integer of 1 to 3.