Patent ID: 8313573

Claim:
A mold-releasing agent comprising as active ingredients, a polyfluoroalkylphosphonic acid represented by the general formula: C n F 2n+1 (CH 2 CF 2 ) a (CF 2 CF 2 ) b (CH 2 CH 2 ) c P(O)(OH) 2 [I] wherein n is an integer of 1 to 6, a is an integer of 1 to 4, b is an integer of 1 to 3, c is an integer of 1 to 3, or a salt thereof and a polyfluoroalkylphosphonic acid oxyalkylene ester represented by the general formula: C n F 2n+1 (CH 2 CF 2 ) a (CF 2 CF 2 ) b (CH 2 CH 2 ) c P(O)[O(RO) m R′] d (OH) 2−d [XI] wherein RO is a linear or branched oxyalkylene group having 2 to 6 carbon atoms, R′ is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or aralkyl group, n is an integer of 1 to 6, a is an integer of 1 to 4, b is an integer of 1 to 3, c is an integer of 1 to 3, d is an integer of 1 or 2, and m is an integer of 1 to 100.