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US 8,282,743 B2Granted
Alkaline cleaning compositions
AssigneeColgate-Palmolive Company
InventorsGenevieve Bonnechere, Baudouin Mertens
Life of this patent
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Abstract
Alkaline cleaning compositions that are useful to remove burnt-on and/or baked-on soil deposits and grease are described. The alkaline cleaning compositions comprise a buffering system of a strong base and an organic acid such that the pH is maintained in the range of about 10 to about 11.2. Also described are methods of removing burnt-on or baked on soil deposits or grease.
Claims21
A cleaning composition comprising:
- (i) a buffering system comprising a strong base having a pKa of at least 13 and at least one acid selected from an organic acid, phosphonic acid, and phosphoric acid;
- (ii) monoethanolamine;
- (iii) a surfactant system comprising cocoamidopropyl betaine, a polyethoxylated alcohol, and sodium cumene sulfonate;
- (iv) ethanol;
- and
- (v) propylene glycol n-butyl ether,
- wherein the pH of the composition is about 9 to about 13.
4 more elements
A composition useful for removing baked-on or burnt on soils from a surface, the composition comprising:
- (i) a buffering system comprising about 0.2 to about 1% by weight of the composition of sodium hydroxide and about 0.5 to about 2.5% by weight of the composition of citric acid;
- (ii) about 0.01 to about 5% monoethanolamine;
- (iii) about 1 to about 4.5% cocoamidopropyl betaine;
- (iv) about 0.5 to about 1.5% of a surfactant soluble carboxylated polyelectrolyte copolymer;
- (v) about 1 to about 3% ethanol;
- and
- (vi) about 2 to about 4% propylene glycol n-butyl ether;
- wherein the pH of the composition is about 9 to about 13.
5 more elements
A cleaning composition comprising:
- (i) a buffering system comprising about 0.2 to about 1% by weight of the composition of sodium hydroxide and about 0.5 to about 2.5% by weight of the composition of citric acid;
- (ii) an alkanolamine;
- (iii) a surfactant system comprising a zwitterionic surfactant, a non-ionic surfactant, an anionic surfactant and mixtures thereof;
- and
- (iv) an organic solvent system comprising a C2-C5 alkanol and a glycol ether;
- wherein the pH of the composition is about 9 to about 13.
3 more elements
Dependencies are inferred from the claim text.