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US 4,391,723 AGranted
Controlled release laundry bleach product
AssigneeThe Procter & Gamble Company
InventorsDennis R. Bacon, Frank P. Bossu
Life of this patent
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Abstract
A hydrophilic or hydrotropic peroxyacid laundry bleach plus a surfactant bleach release-delaying agent, contained inside a pouch, bag or substrate, provides a controlled bleach release laundry product.
Claims8
A dry, granular laundry bleach product in a pouch comprising:
- I. a peroxyacid bleach selected from the group consisting of hydrotropic acid hydrophilic peroxyacid bleaches,
- II. an effective amount of a bleach release-delaying agent;
- said bleach and agent being contained within a closed water-insoluble but water-permeable pouch of fibrous material;
- said agent consisting of a surfactant selected from the group consisting of peroxyacid compatible synthetic detergents and short chain fatty acid soaps having carbon chain lengths of from about 8 to 14, whereby said agent delays the release of said peroxyacid bleach from said pouch into laundry wash liquor.
1 more element
Dependencies are inferred from the claim text.