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US 4,391,727 AGranted
Non-caking bleach containing molecular sieve zeolite
AssigneeColgate-Palmolive Company
InventorClaude L. Benz
Life of this patent
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Abstract
A non-caking bleaching composition, based on sodium perborate as the active bleaching component, includes certain proportions of sodium perborate tetrahydrate, water soluble inorganic builder salt and an aluminum silicate zeolite. The composition is a free flowing particulate spray dried base admixed with the sodium perborate tetrahydrate and at least part of the zeolite.
Claims3
A non-caking bleaching composition comprising:
- by weight from 28.5 to 34.9% sodium perborate tetrahydrate;
- from 8.1 to 9.9% sodium carbonate;
- from 8.1 to 9.9% sodium silicate having an Na.sub.2 O:SiO.sub.2 ratio of about 1:2.35;
- from 0.9 to 1.1% calcined aluminum silicate clay;
- from 33.9 to 41.3% sodium sulfate;
- from 8.1% to 9.9% of a crystalline, water-insoluble aluminosilicate molecular sieve 4A zeolite having a particle size of from 5 to 9 microns, and being in about a 2% hydrated form;
- the composition having a moisture content of about 1.8 to 2.2%.
4 more elements
Dependencies are inferred from the claim text.