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US 5,683,977 AGranted
Dry cleaning system using densified carbon dioxide and a surfactant adjunct
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorsSharon Harriott Jureller, Judith Lynne Kerschner, Myongsuk Bae-Lee, Lisa Del Pizzo, Rosemarie Harris, Carol Resch, Cathy Wada
Life of this patent
Estimating the term…
Abstract
A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO.sub.2. The surfactant has a polysiloxane, a branched polyalkylene oxide and a halocarbon group which is a functional CO.sub.2 -philic moiety connected to a CO.sub.2 -phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.
Claims11
A dry cleaning system for removing stains from fabric comprising:
- a) an effective amount of densified carbon dioxide;
- b) 0.001 to 10% by weight of a surfactant compound having a formula IV
- MD.sub.x D*.sub.y M
- wherein M is a trimethylsiloxyl end group, D.sub.x is a dimethylsiloxyl backbone which is CO.sub.2 -philic and D*.sub.y is one or more methylsiloxyl groups which are substituted with a CO.sub.2 -phobic R or R' group and mixtures of R and R',
- wherein
- R and R' are each independently defined in the formula
- (CH.sub.2).sub.a (C.sub.6 H.sub.4).sub.b (A).sub.d --(L).sub.e --(A').sub.f --!.sub.n --(L').sub.9 Z(G).sub.h
- wherein
- a is 1-30,
- b is 0 or 1,
- C.sub.6 H.sub.4 is unsubstituted or substituted with a C.sub.1-10 alkyl or alkenyl, and A and A' are each independently a linking moiety representing an ester, a keto, an ether, a thio, an amido, an amino, a C.sub.1-4 fluoroalkyl, a C.sub.1-4 fluoroalkenyl, a branched or straight chained poly alkylene oxide, a phosphate, a sulfonyl, a sulfate, an ammonium, and mixtures thereof,
- L and L' are each independently a C.sub.1-30 straight chained or branched alkyl or alkenyl or an aryl which is unsubstituted or substituted,
- e is 0-3,
- f is 0 or 1,
- n is 0-10,
- g is 0-3,
- o is 0-5,
- Z is a hydrogen, carboxylic acid, a hydroxy, a phosphato, a phosphate ester, a sulfonyl, a sulfonate, a sulfate, a branched or straight-chained polyalkylene oxide, a nitryl, a glyceryl, an aryl unsubstituted or substituted with a C.sub.1-30 alkyl or alkenyl, a carbohydrate unsubstituted or substituted with a C.sub.1-10 alkyl or alkenyl or an ammonium,
- G is an anion or cation such as H.sup.+, Na.sup.+, Li.sup.+, K.sup.+, NH.sub.4.sup.+ Ca.sup.+2, Mg.sup.+2, Cl.sup.-, Br.sup.-, I.sup.-, mesylate, or tosylate, and
- h is 0-3;
- c) 0.17% to about 10% by volume of a modifier selected from the group consisting of acetone, hexane, acetonitrile and C.sub.5 -C.sub.15 hydrocarbons;
- d) 0 to 10% by weight of an enzyme solution;
- and
- e) 0 to about 5 wt. % of an organic peracid
- the system being useful for substantially dry cleaning stains from fabrics.
22 more elements
A dry cleaning system for removing stains from fabric comprising:
- a) an effective amount of densified carbon dioxide;
- b) 0.001 to 10% by weight of a surfactant compound having a formula IV
- MD.sub.x D*.sub.y M
- wherein
- M is a trimethylsiloxyl end group, D.sub.x is a dimethylsiloxyl backbone which is CO.sub.2 -philic and D*.sub.y is one or more methylsiloxyl groups which are substituted with a CO.sub.2 -phobic R or R' group and mixtures of R and R',
- wherein
- R and R' are each independently defined in the formula
- (CH.sub.2).sub.a (C.sub.6 H.sub.4).sub.b (A).sub.d --(L).sub.e --(A').sub.f --!.sub.n --(L').sub.g Z(G).sub.h
- wherein
- a is 1-30,
- b is 0 or 1,
- C.sub.6 H.sub.4 is unsubstituted or substituted with a C.sub.1-10 alkyl or alkenyl, and
- A and A' are each independently a linking moiety representing an ester, a keto, an ether, a thio, an amido, an amino, a C.sub.1-4 fluoroalkyl, a C.sub.1-4 fluoroalkenyl, a branched or straight chained poly alkylene oxide, a phosphate, a sulfonyl, a sulfate, an ammonium and mixtures thereof,
- L and L' are each independently a C.sub.1-30 straight chained or branched alkyl or alkenyl or an aryl which is unsubstituted or substituted or mixtures thereof,
- e is 0-3,
- f is 0 or 1,
- n is 0-10,
- g is 0-3,
- o is 0-5,
- Z is a hydrogen, carboxylic acid, a hydroxy, a phosphato, a phosphate ester, a sulfonyl, a sulfonate, a sulfate, a branched or straight-chained polyalkylene oxide, a nitryl, a glyceryl, an aryl unsubstituted or substituted with a C.sub.1-30 alkyl or alkenyl, a carbohydrate unsubstituted or substituted with a C.sub.1-10 alkyl or alkenyl or an ammonium,
- G is an anion or cation such as H.sup.+, Na.sup.+, Li.sup.+, K.sup.+, NH.sub.4.sup.+ Ca.sup.+2, Cl.sup.-, Br.sup.-, I.sup.-, mesylate, or tosylate, and
- h is 0-3;
- c) 0 to about 5 wt. % of an organic peracid;
- d) 0.001% to 10% by weight of an enzyme solution;
- and
- e) 0 to about 10% by volume of a modifier, the system being useful for substantially dry cleaning stains from fabrics.
23 more elements
A dry cleaning system for removing stains from fabric comprising:
- a) an effective amount of densifed carbon dioxide;
- b) 0.001 to 10% by weight of a surfactant compound having a formula IV
- MD.sub.x D*.sub.y M
- wherein
- M is a trimethylsiloxyl end group, D.sub.x is a dimethylsiloxyl backbone which is CO.sub.2 -philic and D*.sub.y is one or more methylsiloxyl groups which are substituted with a CO.sub.2 -phobic R or R' group and mixtures of R and R',
- wherein
- R and R' are each independently defined in the formula
- (CH.sub.2).sub.a (C.sub.6 H.sub.4).sub.b (A).sub.d --(L).sub.e --(A').sub.f --!.sub.n --(L').sub.g Z(G).sub.h
- wherein
- a is 1-30,
- b is 0 or 1,
- C.sub.6 H.sub.4 is unsubstituted or substituted with a C.sub.1-10 alkyl or alkenyl, and A and A' are each independently a linking moiety representing an ester, a keto, an ether, a thio, an amido, an amino, a C.sub.1-4 fluoroalkyl, a C.sub.1-4 fluoroalkenyl, a branched or straight chained poly alkylene oxide, a phosphate, a sulfonyl, a sulfate, and an ammonium and mixtures thereof,
- L and L' are each independently a C.sub.1-30 straight chained or branched alkyl or alkenyl or an aryl which is unsubstituted or substituted or mixtures thereof,
- e is 0-3,
- f is 0 or 1,
- n is 0-10,
- g is 0-3,
- o is 0-5,
- Z is a hydrogen, carboxylic acid, a hydroxy, a phosphato, a phosphate ester, a sulfonyl, a sulfonate, a sulfate, a branched or straight-chained polyalkylene oxide, a nitryl, a glyceryl, an aryl unsubstituted or substituted with a C.sub.1-30 alkyl or alkenyl, a carbohydrate unsubstitued or substituted with a C.sub.1-10 alkyl or alkenyl or an ammonium,
- G is an anion or cation such as H.sup.+, Na.sup.+, Li.sup.+, K.sup.+, NH.sub.4.sup.+ Ca.sup.+2, Mg.sup.+2, Cl.sup.-, Br.sup.-, I.sup.-, mesylate, or tosylate, and
- h is 0-3;
- c) 0 to 10% by weight of an enzyme solution;
- d) 0.01 to about 5 wt. % of an organic peracid;
- and
- e) 0 to about 10% by volume of a modifier,
- the system being useful for substantially dry cleaning stains from fabrics.
23 more elements
Dependencies are inferred from the claim text.