Back to results
US 7,119,054 B2Granted
Aqueous compositions comprising protease and/or amylase
AssigneeReckitt Benckiser N.V.
InventorsChris Efstathios Housmekerides, Daniele Fregonese
Life of this patent
Estimating the term…
Abstract
An enzyme-containing laundry booster composition in which the enzyme is stabilized by a system comprising a boron compound, an alkali metal salt of an aliphatic hydroxydi- or hydroxylic-carboxylic acid and an alkali metal chloride. A preferred additional stabilizing ingredient is a C8–C18 alcohol alkoxylated with about 3 to 6 moles of ethylene oxide.
Claims10
An aqueous enzyme containing laundry booster composition comprising by weight:
- a) from about 0.05% to about 5% of a protease and/or an amylase enzyme,
- b) an enzyme stabilization system comprising:
- 1) from about 0.005% to about 3.0% of a boron compound selected from boric acid, boric oxide, alkali metal borates and mixtures thereof,
- 2) from about 5.0% to about 20% of an alkali metal salt of an aliphatic hydroxydi- or hydroxytri-carboxylic acid having from 1 to 4 hydroxy groups and from 4 to 8 carbon atoms, and
- 3) from about 2% to about 15% of an alkali metal chloride,
- c) sufficient amount of an alkali hydroxide to attain a pH in the range of from 7.0 to 8.5;
- and
- d) from about 0.0 1% to about 1.0% speckles comprising
- 1) a solid core ingredient comprising citric acid coated with hydrogenated vegetable fat;
- and
- 2) a dye.
8 more elements
Dependencies are inferred from the claim text.