Fluorinated polyoxyalkylene glycol diester surfactants

C - Chemistry – Metallurgy – 08 – F

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C08F 22/10 (2006.01)

Patent

CA 2736387

A fluorinated polyoxyalkylene glycol diester surfactant of formula (1) B-X- COCH2O-[-C p H2p O-]n-CH2CO-X-R a, wherein B is M or R a, 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, R a is R f(CH2CF2)d-(C g H2g)-; R f[OCF2CF2]r(C g H2g)-; R f(CH2)h[(CF2CF2)i(CH2CH2)j]k-;or R f OY-; Y is CFHCF2O(CH2CH2O)v-(C g H2g)-; CFHCF2O(C w H2 w)-; or CF(CF3)CONH- (C g H2g)-; each R f is independently C c F(2c+1) wherein c is 1 to about 6; d is 1 to about 3; g is 1 to about 4; s is 0 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 R f(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.

La présente invention concerne un tensio-actif à base de diester de polyoxyalkylène glycol fluoré représenté par la formule (1) B-X-COCH2O-[-CpH2pO-]n-CH2CO-X-Ra, dans cette formule, B est M ou Ra, M représente un hydrogène ionisable, de l'ammonium, un métal alcalin ou un métal alcalinoterreux, p est compris entre environ 2 et environ 4, n est compris entre environ 5 et environ 43, X représente O, S, ou SCH2CH2O, Ra représente Rf(CH2CF2)d-(CgH2g)-; Rf[OCF2CF2]r(CgH2g)-; Rf(CH2)h[(CF2CF2)i(CH2CH2)j]k-;ou Rf OY-; Y représente CFHCF2O(CH2CH2O)v-(CgH2g)-; CFHCF2O(CwH2w)-; ou CF(CF3)CONH-(CgH2g)-; chaque Rf est indépendamment CcF(2c+1), dans cette formule, c est compris entre 1 et environ 6; d est compris entre 1 et environ 3; g est compris entre 1 et environ 4; s représente O ou 1; r est compris entre 1 et environ 4; h est compris entre 1 et environ 6; i, j, et k représentent chacun et indépendamment les uns des autres 1, 2, ou 3, ou un mélange de ceux-ci; pour autant que le nombre total d'atomes de carbone dans Rf(CH2)h[(CF2CF2)i(CH2CH2)j]k- soit compris entre environ 8 et environ 22; v étant compris entre 1 et environ 4; et w est compris entre environ 2 et environ 12.

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