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US 6,664,219 B1Granted
Combination of a nonionic silicone surfactant and a nonionic surfactant in a solid block detergent
AssigneeEcolab Inc.
InventorsSteven E. Lentsch, Victor F. Man, Deborah A. Ihns, Helmut K. Maier, Rhonda K. Schulz
Life of this patent
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Abstract
An alkaline detergent composition is provided including a source of alkalinity and an effective soil removing amount of a nonionic surfactant blend. The nonionic surfactant blend includes a nonionic surfactant having a hydrophobic and an (EO) group and a nonionic silicone surfactant. The detergent composition provides for the removal of waxy-fatty soil.
Claims27
A warewashing detergent composition comprising:
- (a) an effective soil removing amount of a source of alkalinity to provide the detergent composition with a pH of at least 10.0 when provided as a 1 wt. % aqueous solution;
- and
- (b) an effective soil removing amount of a nonionic surfactant blend comprising:
- (i) a nonionic surfactant comprising a hydrophobic group and an —(EO)x group, wherein x is a number of about 1 to 100;
- and
- (ii) a nonionic silicone surfactant having the formula:
- wherein x represents a number that ranges from about 0 to about 100, y represents a number that ranges from about 1 to about 100, a represents a number from about 0 to about 12, b represents a number from about 0 to about 60, and wherein a+b≧1 and R is hydrogen or a lower (C1-6) alkyl;
- wherein the detergent composition, when diluted to provide an aqueous use solution containing the blend of nonionic surfactants in an amount up to about 40 parts by weight of the nonionic surfactant blend per each one million parts of the use solution, exhibits enhanced waxy-fatty soil removing capacity from the surface of ware and exhibits a surface tension of less than about 35 dynes/cm at a temperature of 160° F. to achieve soil removal.
5 more elements
A warewashing detergent composition comprising:
- (a) an effective soil removing amount of a source of alkalinity to provide the detergent composition with a pH of at least 10.0 when provided as a 1 wt. % aqueous solution;
- (b) an effective amount of a hardness sequestering agent;
- and
- (c) an effective soil removing amount of nonionic surfactant blend comprising:
- (i) a nonionic surfactant comprising a hydrophobic group and an —(EO)x group, wherein x is a number of about 1 to 100;
- and
- (ii) a silicone surfactant having the formula:
- wherein x represents a number that ranges from about 1 to about 100, y represents a number that ranges from about 1 to about 100, a represents a number from about 0 to about 12, b represents a number from about 0 to about 60, and wherein a+b≧1 and R is hydrogen or a lower (C1-6) alkyl;
- wherein the detergent composition, when diluted to provide an aqueous use solution containing the blend of nonionic surfactants in an amount up to about 40 parts by weight of the nonionic surfactant blend per each one million parts of the use solution, said use solution exhibits enhanced waxy-fatty soil cleaning capacity from the surface of ware and exhibits a surface tension of less than about 35 dynes/cm at a temperature of 160° F. to achieve soil removal.
6 more elements
Dependencies are inferred from the claim text.