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US 5,750,489 AGranted
Liquid detergent compostions containing structuring polymers for enhanced suspending power and good pourability
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorsRigoberto Felipe Garcia, Tirucherai Varahan Vasudevan, Albert Joseph Post, Feng-Lung Gordon Hsu
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Abstract
The present invention relates to liquid detergent compositions comprising substantially linear, water soluble, highly salt-tolerant non-adsorbing, ionic polymers of MW 10,000 to 1,000,000 Daltons which, when added in defined minimum levels to structured heavy duty liquids, make the liquids highly shear thinning without decreasing pour viscosity of the composition or increasing it to a point where it is too thick. The compositions are also stable.
Claims18
A liquid detergent composition comprising
- (a) 31% to about 80% by wt. of one or more surfactants predominantly present as lamellar drops dispersed in an aqueous medium containing at least 1% by wt. electrolyte;
- wherein said surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants and mixtures thereof;
- and wherein unsaturated fatty acids and salts thereof comprise no more than 2% by weight of the total composition;
- (b) 0.1% to 20% by wt. deflocculating polymer;
- (c) a substantially linear, water soluble, highly salt-tolerant, non-adsorbing, structuring ionic polymer having a molecular weight (MW) of 10,000 to 1,000,000 Daltons, the concentration of said structuring polymer ranging from a minimum of a(MW).sup.-0.75 wt. % to a maximum of 20% by weight, wherein a is equal to 770;
- and
- wherein the composition has a Sisko index of 0.35 or less as measured by the Sisko rheological model;
- wherein said structuring polymer does not decrease the viscosity of the composition, as measured at 21 sec.sup.-1, relative to the viscosity prior to addition of said polymer;
- wherein said structuring polymer does not increase the viscosity, as measured at 21 sec.sup.-1, above 5000 mpas;
- and
- wherein said composition results in no more than 5% bottom clear layer separation by volume upon storage at 37.degree. C. for 30 days.
8 more elements
A liquid detergent pH jump system composition comprising
- (a) 31% to about 80% by wt. of one or more surfactants predominantly present as lamellar drops dispersed in an aqueous medium containing 1% to 60% by wt. electrolyte;
- wherein said surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants and mixtures thereof;
- and wherein unsaturated fatty acids and salts thereof comprise no more than 2% by weight of the total composition;
- (b) a pH jump system comprising 1.0% to 25.0% by wt., based on the weight of the composition, sorbitol;
- and 0.5% to 10.0% by wt., based on the weight of the composition, boron containing compound
- (c) 0.1% to 15% by wt. deflocculating polymer;
- (d) 0.1 to 20% by wt. of a substantially linear water soluble, highly salt-tolerant, non-adsorbing structuring ionic polymer having a MW of 10,000 to 1,000,000 Daltons, the concentration of said structuring polymer ranging from a minimum of a(MW).sup.-0.75 wt. % to a maximum of 20% by weight, wherein a is equal to 770;
- wherein the composition has a Sisko index of about 0.35 or less as measured by the Sisko rheological model;
- wherein said structuring polymer does not decrease the viscosity of the composition, as measured at 21 sec.sup.-1, relative to the viscosity prior to addition of said polymer;
- wherein said polymer does not increase the viscosity, as measured at 21 sec.sup.-1 above 5000 mPas;
- and
- where said composition results in no more than 5% bottom clear layer separation by volume upon storage at 37.degree. C. for 30 days.
9 more elements
Dependencies are inferred from the claim text.