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US 5,688,435 AGranted
Pigmented rheopectic cleaning compositions with thixotropic properties
AssigneeReckitt & Colman Inc.
InventorsDavid A. Chang, James W. Cavanagh
Life of this patent
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Abstract
A pigmented bleach-containing hard surface cleaner comprises an alkali metal hypochlorite, bentonite clay, a mono-(long chain alkyl)-tertiary amine oxide, an alkali metal salt, a pH stabilizer to attain a pH of 11 or higher, an alkali metal alkyl sarcosinate, an alkylbenzene sulphonate, and an inorganic pigment which is preferably ultramarine blue. The cleaning composition has excellent colour stability as well as phase stability and hypochlorite stability.
Claims6
A thickened pigmented aqueous hypochlorite composition comprising, on a weight basis:
- (a) from 0.5% to 10% of an alkali metal hypochlorite;
- (b) from 0.25% to 1% of bentonite clay;
- (c) from 0.5% to 2.5% of a tertiary amine oxide of the formula ##STR3## wherein R.sup.1 is alkyl of from 10 to 16 carbon atoms, and each of R.sup.2 and R.sup.3 is alkyl of from 1 to 3 carbon atoms;
- (d) from 0.25% to 2.0% of an alkali metal salt;
- (e) a pH stabilizer in sufficient amount to provide a pH of 11 or higher;
- (f) from 0.10% to 0.75% of an alkali metal sarcosinate of the formula ##STR4## wherein R.sup.4 is a straight chain alkyl of from 10 to 16 carbon atoms and M is lithium, sodium or potassium;
- (g) from 0.08 to 0.80% of an alkali metal alkylbenzene sulphonate in which the alkyl group is straight chained and has from 10 to 14 carbon atoms;
- and
- (h) from 0.01% to 0.5% of an inorganic pigment
- wherein the molar ratio of (c) to (g) ranges from 5:1 to 11:
- 1, and the viscosity of the said composition is from 200 to about 1000 cps.
8 more elements
Dependencies are inferred from the claim text.