FLUORINATED POLYOXYALKYLENE GLYCOL DIESTER SURFACTANTS

摘要

A fluorinated polyoxyalkylene glycol diester surfactant of formula (1) B-X-COCH2O-[-CpH2pO-]n-CH2CO-X-Ra, wherein B is M or Ra, M is an ionizable hydrogen, ammonium, alkali metal, or alkaline earth metal, p is from about 2 to about 4, n is from about 5 to about 43, X is O, S, or SCH2CH2O, Ra is Rf(CH2CF2)d-(CgH2g)-; Rf[OCF2CF2]r(CgH2g)-; Rf(CH2)h[(CF2CF2)i(CH2CH2)j]k-;or Rf OY-; Y is CFHCF2O(CH2CH2O)v-(CgH2g)-; CFHCF2O(CwH2w)-; or CF(CF3)CONH-(CgH2g)-; each Rf is independently CcF(2c+1) wherein c is 1 to about 6; d is 1 to about 3; g is 1 to about 4; s is O or 1; r is 1 to about 4; h is 1 to about 6; i, j, and k are each independently 1, 2, or 3, or a mixture thereof; provided that the total number of carbon atoms in Rf(CH2)h[(CF2CF2)i(CH2CH2)j]k- is from about 8 to about 22; v is 1 to about 4; and w is from about 2 to about 12.