Patent ID: 8309756

Claim:
A surface treating agent comprising a compound (A) represented by the following formula (A): R F O(CF 2 CF 2 O) a CF 2 C(O)N(H) b (-Q-OC(O)C(R)═CH 2 ) 2-b (A) wherein R F is a C 1-20 perfluoro monovalent saturated hydrocarbon group or a C 2-20 perfluoro monovalent saturated hydrocarbon group having an etheric oxygen atom inserted between carbon atoms, and is a group having no —OCF 2 O— structure, a is an integer of from 1 to 200, b is 0 or 1, Q is a C 1-6 alkylene group or -Ph-(CH 2 ) c — (wherein Ph is a 1,4-phenylene group, and c is 0 or 1), and R is a hydrogen atom or a C 1-3 alkyl group.