Fluorinated polyoxyalkylene glycol diamide surfactants
AssigneeE.I. du Pont de Nemours and Company
InventorsPeter Michael Murphy, Anilkumar Raghavanpillai
Life of this patent
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Abstract
A fluorinated polyoxyalkylene glycol diamide surfactant of formula 1 B—X—COCH2O—[—CpH2pO—]n—CH2CO—X—Ra (1) 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 about 43, each X is independently NR, SCH2CH2NR, SO2NRCH2CH2NR, or SO2CH2CH2NR; R is hydrogen, or a linear or branched alkyl group CbH(2b+1) wherein b is 1 to about 18, Ra is Rf(CH2CF2)d—(CgH2g)—; Rf(OCF2CF2)r—(CgH2g)—; RfOY—; Rf(CH2)h[(CF2CF2)i(CH2CH2)j]k—; Rf(CgH2g)—; or H(CcF2c)—(CgH2g)—; Y is CFHCF2O(CwH2w)—; or CF(CF3)CONH—(CgH2g)—; and each Rf is independently CcF(2c+1) wherein c is 1 to about 6.
Claims16
A compound of formula (1):
- B—X—COCH2O—[—CpH2pO]n—CH2CO—X—Ra (1)
- 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,
- each X is independently NR, SCH2CH2NR, SO2NRCH2CH2NR, or SO2CH2CH2NR,
- R is hydrogen, or a linear or branched alkyl group CbH(2b+1) wherein b is 1 to about 18,
- Ra is Rf(CH2CF2)d—(CgH2g)—;
- Rf(OCF2CF2)r—(CgH2g)—;
- RfOY—;
- Rf(CH2)h[(CF2CF2)i(CH2CH2)j]k-;
- Rf(CgH2g)—;
- or H(CcF2c)—(CgH2g)—;
- Y is 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;
- r is 1 to about 4;
- h is 1 to about 6;
- w is from about 2 to about 12;
- and
- 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.
A method of altering the surface behavior of a liquid comprising adding to the liquid the compound of formula (1) or a mixture thereof:
- B—X—COCH2O—[—CpH2pO—]n—CH2CO—X—Ra (1)
- 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,
- each X is independently NR, S, SCH2CH2NR, SO2NRCH2CH2NR, or SO2CH2CH2NR;
- R is hydrogen, or a linear or branched alkyl group CbH(2b+1) wherein b is 1 to about 18,
- Ra is Rf(CH2CF2)d—(CgH2g)—;
- Rf(OCF2CF2)r—(CgH2g)—;
- RfOY—;
- Rf(CH2)h[(CF2CF2)i(CH2CH2)j]k-;
- Rf(CgH2g)—;
- or H(CcF2c)—(CgH2g)—;
- Y is 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;
- r is 1 to about 4;
- h is 1 to about 6;
- w is from about 2 to about 12;
- and
- 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.
Dependencies are inferred from the claim text.