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US 4,374,035 AGranted
Accelerated release laundry bleach product
AssigneeThe Procter & Gamble Company
InventorFrank P. Bossu
Life of this patent
Estimating the term…
Abstract
A hydrophilic or hydrotropic peroxyacid laundry bleach with surfactant plus an acid additive, contained inside a pouch, bag or substrate, provides an accelerated controlled bleach release laundry product.
Claims11
A dry, granular laundry bleach product in a pouch comprising:
- I. a peroxyacid bleach selected from the group consisting of the hydrotropic or hydrophilic peroxyacid bleaches,
- II. a surfactant at level of at least about 10% by weight of the peroxyacid bleach, said surfactant selected from the group consisting of peroxyacid compatible synthetic detergents and fatty acid soaps, and,
- III. a water-soluble, peroxyacid compatible acid additive, said acid having a pK.sub.a of from about 2 to about 7,
- said pouch consisting of a water-insoluble but water-permeable fibrous material;
- whereby said acid additive accelerates the release of said bleach from the pouch into laundry wash liquor in the presence of said surfactant.
2 more elements
Dependencies are inferred from the claim text.