| 摘要 |
Disclosed is a polyfluoroalkylphosphonic acid oxyalkylene ester of the 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 (RO is a C 2 -C 6 linear or branched oxyalkylene group, R' is a hydrogen atom or a C 1 -C 20 alkyl group or aralkyl group, n is 1 to 6, a is 1 to 4, b is 1 to 3, c is 1 to 3, d is 1 or 2, and m is 1 to 100), which is a compound having a perfluoroalkyl group containing 6 or less carbon atoms and referred to as having low bioaccumulation potential, and exhibiting, when used as an active ingredient of a mold-releasing agent, mold release performance equivalent to that of a compound having a perfluoroalkyl group containing 8 or more carbon atoms. This compound is produced by subjecting a polyfluoroalkylphosphonic acid of the 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 and a polyalkyleneglycol or a monoether thereof of the formula: HO (RO) m R' to a condensation reaction. |
