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US 5,496,542 AGranted
Stable sodium percarbonate formulation
AssigneeChurch & Dwight Co., Inc.
InventorJohn P. Hauschild
Life of this patent
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Abstract
This invention provides a stable hydrogen peroxide-releasing formulation in liquid or gel form, having a content of sodium percarbonate which is stabilized by a specific proportion of deionized water. The formulation ingredients can be incorporated in detergent or dentifrice compositions, and the sodium percarbonate ingredient exhibits long term stability during manufacture and storage of the compositions.
Claims9
A stable hydrogen peroxide-releasing formulation comprising (1) between about 55-90 weight percent of polyalkylene glycol;
- (2) between about 5-20 weight percent of sodium percarbonate;
- (3) between about 0.5-6 weight percent of colloidal silica;
- (4) between about 0-12 weight percent of alkali metal pyrophosphate;
- and (5) between about 0.2-1 part by weight of water per part of sodium percarbonate.
1 more element
Dependencies are inferred from the claim text.