C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
134/19
C11D 1/12 (2006.01) C11D 1/37 (2006.01) C11D 3/08 (2006.01) C11D 11/02 (2006.01) C11D 17/06 (2006.01) C11D 1/14 (2006.01) C11D 1/22 (2006.01)
Patent
CA 1275019
- 1 - Abstract Spray dried detergent granules containing high levels of surfactants are compacted and admixed with other ingredients to form a dense, rapidly dissolving detergent composition. The composition is prepared by: (1) forming base granules comprising, by weight: (a) from about 30% to about 85% of a mixture of a C11-C13 alkylbenzene sulfonate surfactant and a C12-C16 alkyl sulfate surfactant in a weight ratio of sulfonate surfactant to sulfate surfactant of from about 4:1 to about 1:4; (b) an alkali metal silicate having a molar ratio of SiO2 to alkali metal oxide of from about 1.0 to about 3.2; the weight ratio of (a) to (b) being from about 1.5:1 to about 6:1; (c) from about 10% to about 60% of a water-soluble sulfate; and (d) from 0% to about 20% of a pyrophosphate or anhydrous Form I tripolyphosphate detergent builder material, or mixtures thereof. The base granules are prepared by drying an aqueous slurry comprising the above components; (2) admixing said base granules with from 0 to about 300%, by weight of the base granules, of a detergent builder material; (3) compacting said admix at a pressure of from about 20 to about 200 psi; (4) granulating the resulting compacted admix; and (5) admixing an additional 0% to about 300%, by weight of the base granules, of a detergent builder material. The composition has a bulk density of from about 0.55 to about 1.2 g/cc and an average particle size of from about 20 to about 1500 microns.
520140
Evans Brett Alan
Hansen Richard
Moore Jeffrey Elijah
Kirby Eades Gale Baker
The Procter & Gamble Company
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