Thickeners for acid cleaning compositions
AssigneeR. T. Vanderbilt Company, Inc.
InventorPeter A. Ciullo
Life of this patent
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Abstract
This invention relates to storage stable liquid cleaning compositions for use on porcelain type surfaces wherein said compositions comprise an aqueous mineral acid solution thickened with smectite clay and xanthan gum, a stabilizing amount of 1-hydroxyethyl-2-alkylimidazoline and optionally, a chelate. The compositions may further contain a disinfectant.
Claims9
A synergistic thickening composition comprising (a) swellable smectite clay, (b) xanthan gum and (c) imidazolines of the structural formula ##STR2## wherein R represents C.sub.7-17 -alkyl radical derived from fatty acids and the ratio of the smectite to xanthan gum is about 9:1 to about 1:1 and the ratio of the smectite to the imidazoline about 9:1 to about 1:2.
A method of thickening acid cleaning compositions the steps of which comprise:
- (a) adding a dry blend of swellable smectite clay and xanthan gum to water;
- (b) hydrating by mixing;
- (c) adding imidazoline of the structural formula ##STR3## wherein R represents C.sub.7-17 -alkyl radical derived from fatty acids;
- (d) dispersing the imidazoline under low shear conditions;
- (e) blending in mineral acid to produce a viscous liquid.
A liquid cleaning composition comprising
- (a) up to about 30 percent by weight of mineral acid;
- (b) a thickening agent consisting of
- (i) swellable smectite clay;
- (ii) xanthan gum;
- and
- (iii) imidazolines of the structural formula ##STR4## wherein R represents C.sub.7-17 -alkyl radical derived from fatty acids and wherein the ratio of the smectite to xanthan gum is about 9:1 to about 1:1 and the ratio of the smectite to the imidazoline about 9:1 to about 1:2 in an effective amount;
- and
- (c) water.
Dependencies are inferred from the claim text.