Stabilized lipolytic enzyme-containing liquid detergent composition
AssigneeLever Brothers Company
InventorsJohn F. Hessel, Martin S. Cardinali, Michael P. Aronson
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Abstract
The present invention relates to isotropic enzymatic liquid detergent compositions comprising lipolytic enzymes. The stability of the lipolytic enzymes is significantly improved therein by inclusion of particular nonionic ethylene glycol containing copolymers therein. These polymers comprise ethylene oxide or ethylene glycol, copolymerized with difunctional acids or acrylic based copolymers. Isotropic liquids are obtained without the aid of hydrocarbon solvents. The compositions preferably also contain proteolytic enzymes.
Claims11
An isotropic enzymatic liquid detergent composition comprising, in an aqueous liquid medium, from 0.005-100LU per milligramme of the final composition of a lipolytic enzyme selected from Humicola lanuginosa and Thermomyces lanuginosus and bacterial lipases which show a positive immunological cross-reaction with the antibody of the lipase, produced by Chromobacter viscosum var. lipolyticum NRRL B-3673, from 5-35% by weight of a detergent-active compound, and from 0.1-10% by weight of an ethylene glycol containing polymer with an average molecular weight of 3,000 to 1,000,000 having the following structure ##STR11## where R' is a saturated, unsaturated, or aromatic hydrocarbon of 2-18 carbon atoms, R" is selected from the group consisting of propylene glycol, butylene glycol, fatty amine ethoxylate, polyethylene glycol ether of glycerol esters and fatty ethanolamides, Q and L are independently selected from the group consisting of:
- (i) hydrogen, alkyl, alkylaryl, alkoxy, alkylamine groups containing 1 to 20 carbon atoms, and
- (ii) a vinyl acetate graft;
- where
- m has a value of at least one and n and p are any integer including zero, except n cannot be 0 when L is hydrogen, said polymer being soluble in said isotropic detergent composition.
Dependencies are inferred from the claim text.