C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/39 (2006.01) C11D 3/10 (2006.01) C11D 3/20 (2006.01) C11D 17/00 (2006.01) C11D 17/06 (2006.01)
Patent
CA 2108038
2108038 9221744 PCTABS00017 A dry, fabric bleaching composition, which leaves minimal residue in cold water washes, comprising (a) a bleaching-effective amount of a peroxygen bleach; (b) an alkaline builder material in an amount sufficient to provide an alkaline pH and building capacity; (c) about 0.05-0.5 % of a calcium stearate powder; and (d) 0 - about 5 % of a surfactant. A method of making the composition of the present invention is also disclosed, and comprises dry blending or agglomerating the peroxygen bleach and alkaline builder, as well as any other dry ingredients. To this is added the calcium stearate powder which is further blended until uniformly coated. Last, the liquids, especially nonaqueous liquids such as surfactant, are applied using a relatively coarse spray pattern, while continuing to mix, to result in a uniformly coated, free flowing dry mixture.
Riches Mckenzie & Herbert Llp
The Clorox Company
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