Lever Brothers Company

Andrew T Hight

James F Davies

Robert Stanley Lee

A soap based detergent composition for washing fabrics comprises an ethoxylated nonionic detergent active compound and a cellulose ether in addition to the soap, with the ratio of the soap to the nonionic active being from 1:1 to 10:1. Up to 10% phosphate builder may be present. The combination of the nonionic and the cellulose ether reduces redeposition of soil compared with other redeposition agents.

Soap-nonionic detergent compositions containing a cellulose ether

A method for washing fabrics at cold water temperatures is provided wherein fabrics are contacted below 50.degree. C. with built detergent particles comprising from 5 to 50% by weight of nonionic detergent active compound, from 15 to 90% by weight of a saturated fatty acid builder salt and from 5 to 80% carrier material chosen from water-insoluble inorganic materials, water-soluble inorganic materials, water-soluble organic materials, or mixtures thereof. The particles are prepared by distributing the aforementioned components in water, mixing the combination, and evaporating water therefrom to obtain the built particles. These built detergent particles are adapted to promote rapid dissolution or dispersion of the particle on contact with water.

Cool water fabric washing process using a particulate detergent

Particulate detergent compositions, especially for use in cold water, contain a detergent active material, an alkaline material and builder particles comprising a carrier material and a saturated fatty acid having at least 16 carbon atoms. The carrier material is water-soluble or water-dispersible to release the fatty acid when the composition is added to a wash liquor. The builder particles have a size of 50 to 5000 microns. Suitable carrier materials include starch, clay, silica and inorganic salts. The fatty acid may be in solid solution with a dispersant such as a nonionic surfactant. When the alkaline material is carbonate, the addition of the builder particles to the wash liquor may be delayed until after a critical state is reached.

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South Wirral, United Kingdom

Andrew T Hight