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US 4,537,707 AGranted
Liquid detergents containing boric acid and formate to stabilize enzymes
AssigneeThe Procter & Gamble Company
InventorRoland G. Severson, Jr.
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Abstract
Heavy-duty liquid detergents containing anionic surfactant, fatty acid, builder, proteolytic enzyme, boric acid or a boron compound capable of forming boric acid in the composition, formate, and calcium ion are disclosed. The combination of boric acid and formate provides improved protease stability in the compositions.
Claims14
A heavy-duty liquid detergent composition comprising, by weight:
- (a) from about 10% to about 50% of an anionic synthetic surfactant;
- (b) from about 3% to about 30% of a C.sub.10 -C.sub.22 fatty acid;
- (c) from about 2% to about 15% of a water-soluble detergency builder;
- (d) from about 0.01% to about 5% of a proteolytic enzyme;
- (e) from about 0.25% to about 10% of boric acid or a boron compound capable of forming boric acid in the composition;
- (f) from about 0.05% to about 5% of a water-soluble formate;
- (g) from about 1 to about 30 millimoles of calcium ion per liter of composition;
- and
- (h) from about 20% to about 80% of water.
6 more elements
Dependencies are inferred from the claim text.