Stable non-aqueous cleaning composition method of use
AssigneeColgate-Palmolive Company
InventorsNagaraj S. Dixit, Frank J. Loprest, Kuo-Yann Lai
Life of this patent
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Abstract
A non-aqueous liquid heavy duty laundry detergent composition in the form of a suspension of builder salt in liquid nonionic surfactant is stabilized against phase separation by the addition of small amounts of low density filler, such as hollow plastic or glass microspheres. The low density particulate filler is added in an amount to equalize the densities of the continuous liquid phase and the dispersed phase.
Claims18
A non-aqueous liquid fabric treating composition which comprises from about 30 to about 70% by weight of a non-aqueous liquid comprising a nonionic surfactant, from abut 70 to about 30% by weight of fabric-treating solid particles suspended in said non-aqueous liquid, and from about 0.01 to about 10.0% by weight of a low density filler in an amount sufficient to substantially equalize the density of the continuous liquid phase and the density of the suspended particle phase, inclusive of the low density filler and the suspended fabric-treating solid particles, wherein the ratio of the average particle size diameter of the low density filler to the average particle size diameter of the suspended particles is at least about 6:1 thereby inhibiting settling of the suspended particles, wherein said low density filler has a density in the range of 0.001 to 0.5 g/cc.
A heavy duty built liquid thickened non-aqueous laundry detergent composition comprising
- from about 30 to about 40% of a liquid nonionic surfactant which is a mixed ethylene oxide--propylene oxide condensate of a fatty alcohol having from about 12 to about 18 carbon atoms;
- from about 25 to about 40% of alkali metal phosphate detergent builder salt;
- from about 5 to about 12% of an alkylene glycol ether solvent as a viscosity control and anti-gelling agent;
- from about 2 to about 20% of a peroxide bleaching agent;
- from about 0.1 to about 8% of a bleach activator;
- up to about 2% of enzymes;
- up to about 10% of soil suspending, anti-redeposition and anti-yellowing agents;
- up to about 5% of high complexing power sequestering agent;
- and
- up to about 2% each of one or more of colorants, perfumes and optical brighteners;
- the solid components of said composition having an average particle size in the range of from about 2 to 10 microns, with no more than about 10% of the particles having a particle size of more than 10 microns;
- and
- being stably suspended in the liquid components of said composition by the addition of from about 0.05 to about 6% of inorganic or organic filler particles having a density of from about 0.01 to 0.50 g/cc and an average size particle diameter of from about 20 to 80 microns wherein the ratio of the average particle size diameter of the low density filler to the average particle size diameter of the suspended particles is at least about 6:1;
- said composition, after the addition of said filler particles having a viscosity in the range of from about 500 to 5,000 centipoise.
A method for stabilizing against settling of the dispersed finely divided particle phase of a suspension of said solid particles in a non-aqueous liquid phase, said solid particles having density greater than the density of the liquid phase, said solid particles being incorporated in said liquid phase at a concentration of from about 0.01 to 10.0% by weight, said solid particles having a density in the range of from about 0.01 to 0.5 g/cc, said solid particles having densities greater than the density of the liquid phase, said method comprising adding to the suspension of said solid particles an amount of a finely divided filler having a density lower than the density of the liquid phase such that the density of the dispersed solid particles together with said filler becomes similar to the density of the liquid phase.
Dependencies are inferred from the claim text.