Granular detergent composition containing an optimum surfactant system for cold temperature laundering
AssigneeThe Procter & Gamble Company
InventorsDarla Bonar Kettenacker, Eugene Joseph Pancheri, Jacqueline Westfield, Rose Marie Weitzel
Life of this patent
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Abstract
A granular detergent composition which includes a surfactant system containing linear alkylbenzene sulfonate, acyclic quaternary ammonium salt, alkyl sulfate and alkyl ethoxy sulfate surfactants in selected molar ratios is provided. The composition has improved performance in cold temperature (i.e., 5° C. to 30° C.) laundering operations.
Claims20
A granular detergent composition characterized by:
- (a) from 1% to 90% by weight of a surfactant system including
- (i) acyclic quaternary ammonium salt surfactant and linear alkylbenzene sulfonate surfactant in a molar ratio range of from 1:8 to 1:72, wherein said quaternary ammonium salt surfactant has the formula
- wherein R4 is an acyclic aliphatic C10-C22 hydrocarbon group, R5 is R4 or C1-C4 saturated alkyl or hydroxy alkyl groups, and R6 is R4 or R5 and A− is an anion;
- (ii) alkyl sulfate surfactant in a molar ratio range with said linear alkylbenzene sulfonate surfactant of from 1:3 to 1:20;
- (iii) alkyl ethoxy sulfate surfactant in a molar ratio range with said linear alkylbenzene sulfonate surfactant of from 1:15 to 1:42, wherein said alkyl ethoxy sulfate surfactant has a degree of ethoxylation of from 1 to 5;
- (b) at least 1% by weight of a detergency builder;
- and
- (c) the balance adjunct detergent ingredients.
The detergent composition of claim wherein said alkyl ethoxylate is C12-13 alkyl ethoxylate with a degree of ethoxylation of from about 2 to about 9.
A granular detergent composition comprising:
- (a) from about 5% to about 40% by weight of a surfactant system including
- (i) acyclic quaternary ammonium salt surfactant and linear alkylbenzene sulfonate surfactant in a molar ratio of from about 1:10 to about 1:63, wherein said quaternary ammonium salt surfactant has formula
- wherein R4 is an acyclic aliphatic C10-C22 hydrocarbon group, R5 is R4 or C1-C4 saturated alkyl or hydroxy alkyl groups, and R6 is R4 or R5 and A− is an anion;
- (ii) alkyl sulfate surfactant in a molar ratio range with said linear alkylbenzene sulfonate surfactant of from about 1:5 to about 1:15;
- (iii) alkyl ethoxy sulfate surfactant in a molar ratio range with said linear alkylbenzene sulfonate surfactant of from about 1:20 to about 1:35, wherein said alkyl ethoxy sulfate surfactant has a degree of ethoxylation of from about 1 to 5;
- (b) from about 10% to about 70% by weight of a detergency builder;
- and
- (c) the balance adjunct detergent ingredients.
Dependencies are inferred from the claim text.