Encapsulated enzyme in dry bleach composition

Details Encapsulated enzyme in dry bleach composition Encapsulated enzyme in dry bleach composition

1989-07-24

1992-03-03

Maples, John S.

Compositions

Electrolytes for electrical devices

252 95, 25217412, 25217413, 25218626, 25218642, C11D 338, C11D 3395, C01B 1510

Patent

active

050930214

ABSTRACT:
Methods and compositions for increased stability of enzymes in oxidant dry bleach. Enzyme stability is adversely affected by increased temperature, humidity, and the presence of strong oxidants, such as peracids. The instant invention provides enzyme stability in the presence of oxidant bleaches by coating or encapsulating the enzyme, while providing enzyme solubility suitable for use in bleach mixtures upon introduction to an aqueous medium. Particularly, alkali and neutral materials act as protection agents, which neutralize oxidant species before the contact and denature the enzyme. Other standard bleaching composition adjuncts such as builders, fillers, buffers, brighteners, fragrances, and the like may be included in the enzyme-containing oxidant bleach composition in addition to the discrete coated enzyme granules.

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European Search Report, EP 86306442 (published as EP 214 789) (corresponding to parent U.S. Ser. No. 06/767,980, filed 8/24/85, now abandoned).
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