Elizabeth A Mccallion

US Patent:

46557822, Apr 7, 1987

Filed:

Dec 6, 1985

Appl. No.:

6/805531

Inventors:

Elizabeth J. McCallion - Hasbrouck Heights NJ
William Karpusiewicz - Floral Park NY
Charles F. Irwin - Randolph NJ

Assignee:

Lever Brothers Company - New York NY

International Classification:

C11D 304
C11D 312
C11D 3395
D06L 302

US Classification:

8111

Abstract:

A bleaching composition is disclosed wherein the bleach catalyst is an aggregate comprising manganese (II) cations adsorbed onto an aluminosilicate support, a binder and a phosphate salt; the aggregates have a diameter ranging from at least 250 to about 2000 microns which aggregates upon dispersion in water for two minutes at pH 10 and 40. degree. C. leave undissolved less than 5% particles of 125 microns or higher. The base detergent powder comprises a phosphate salt and a peroxy compound. It was found that bleach performance improves by having phosphate salt both in the aggregate and in the detergent powder base.