Lever Brothers Company, Division of Conopco, Inc.

Lever Brothers Company

Martin S Cardinali

Michael Paul Aronson

John F Hessel

Jack T McCown

Howard B Kaiserman

The invention relates to the stabilization of mixtures of proteolytic and lipolytic enzymes in a liquid medium such as a liquid detergent composition. By inclusion therein of a stabilizing system comprising a polyol and a boron compound which are capable of reacting with each other whereby the polyol has a first binding constant with the boron compound of at least 500 l/mole and a second binding constant of at least 1,000 l.sup.2 /mole.sup.2, the stability of the lipase in the presence of the protease is significantly improved. The lipase is preferably obtained from Humicola lanuginosa, and the stabilizing system preferably comprises a mixture of sorbitol and borax.

Enzymatic liquid detergent composition

The present invention relates to enzymatic liquid detergent compositons 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 vinylic based copolymers. The liquids are obtained without the aid of hydrocarbon solvents.

Enzymatic liquid detergent compositions containing nonionic copolymeric

This invention provides a liquid detergent composition comprising:

Heavy duty liquid detergent compositions containing enzymes stabilized

Stabilized enzymes liquid detergent composition containing lipase and

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.

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Millington, NJ, United States of America

Martin S Cardinali