Hypochlorite bleaching compositions
AssigneeThe Procter & Gamble Company
InventorsFrancesco Agostini, Andrea Agostini, Giuseppe Trigiante
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Abstract
An aqueous liquid bleaching composition having improved fabric whitening and fabric safety performance, said composition consisting of an alkali metal hypochlorite, an alkali metal silicate, a strong source of alkalinity, and an alkali metal carbonate.
Claims11
A method of bleaching fabrics to improve fabric whiteness and/or fabric safety which comprises the step of contacting said fabrics with a diluted aqueous bleaching composition at a concentration of from about 9 to about 18 grams per liter and a pH of from 9 to 14, said composition, in its undiluted form, comprising from 2% to 10% by weight of the total composition, based on active chlorine, of an alkali metal hypochlorite, or mixtures thereof, from 0.02% to 5% of an alkali metal silicate, or mixtures thereof, from 0.04% to 1.5% of a strong source of alkalinity and from 0.1% to 5% by weight of the total composition of an alkali metal salt of carbonate, or mixtures thereof, said composition being free of bleach stable perfume.
An aqueous liquid bleaching composition consisting of from 2% to 10% by weight of the total composition, based on active chlorine, of an alkali metal hypochlorite, or mixtures thereof, from 0.02% to 5% of an alkali metal salt of silicate, or mixtures thereof, 0.04% to 1.5% of a strong source of alkalinity and from 0.1% to 5% by weight of the total composition of an alkali metal salt of carbonate, or mixtures thereof.
Dependencies are inferred from the claim text.