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US 4,537,706 AGranted
Liquid detergents containing boric acid 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 or amylolytic enzyme, boric acid or a boron compound capable of forming boric acid in the composition, and calcium ion are disclosed. Boric acid provides improved enzyme stability in the compositions.
Claims13
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 or amylolytic 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 1 to about 30 millimoles of calcium ion per liter of composition;
- and
- (g) from about 20% to about 80% of water.
5 more elements
Dependencies are inferred from the claim text.