Granular bleaching compositions
AssigneeThe Procter & Gamble Company
InventorsMarina Trani, Guiseppe Trigiante, Ellie Marie Frasier
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Abstract
A granular laundry composition is disclosed which comprises a source of available-oxygen, a stabilizer like chelant together with an alkali metal salt of silicate. Such compositions allow to produced wash solutions wherein the bleaching activity is retained upon longer periods of time. Optionally said compositions may further comprise a soil suspender and be formulated so as to allow to keep the pH of the wash solution below 9.5 and thereby boost the cleaning performance on particulate soil (clay).
Claims9
A granular composition comprising from about 10% to about 80% by weight of a source of available oxygen, from about 0.01% to about 5% by weight of diethylene triamino pentacetic acid, and from about 2% to about 7% by weight of an alkali metal salt of silicate which is sodium crystalline layered silicate having the formula NaMSi.sub.x O.sub.2x+1 .multidot.yH.sub.2 O wherein M is sodium or hydrogen, x is a number from about 1.9 to about 4 and y is a number from 0 to about 20, wherein said source of available oxygen is a percarbonate compound.
Dependencies are inferred from the claim text.