Low odor ester-based microemulsions for cleaning hard surfaces
AssigneeCognis IP Management GmbH
InventorsStephen F. Gross, Markus Doerr, Timothy C. Morris
Life of this patent
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Abstract
Disclosed is a hard surface cleaning composition employing dibasic esters as a primary solvent in combination with a primary emulsifier, a short-chain cosurfactant, a secondary emulsifier and water. Optional components include a polar solvent and a thickener. The disclosed composition is preferably in the form of an oil continuous microemulsion and is provided as a component of a liquid or spray formulation for use, depending upon the application. The disclosed cleaning agents have a low odor and satisfy the 2005 CARB VOC requirements of less than 8% by weight for oven cleaners.
Claims27
A microemulsion composition comprising:
- (a) from about 1 to about 15% by weight of a primary emulsifier comprising at least one isopropylamine salt of a C10-14 alkylbenzenesulfonic acid;
- (b) from about 3 to about 50% by weight of a primary solvent selected from one or more dibasic esters;
- (c) from about 1 to about 20% by weight of one or more short-chain cosurfactants comprising at least n-butyl ether of a propylene glycol;
- (d) from about 1 to about 5% by weight of secondary emulsifier;
- and
- (e) the remainder, water to 100%,
- all weights being based on the total weight of the composition.
A process for cleaning a hard surface comprising contacting the surface with a composition comprising:
- (a) from about 1 to about 15% by weight of a primary emulsifier comprising at least one isopropylamine salt of a C10-14 alkylbenzenesulfonic acid;
- (b) from about 3 to about 50% by weight of a primary solvent selected from one or more dibasic esters;
- (c) from about 1 to about 20% by weight of one or more short-chain cosurfactants comprising at least n-butvl ether of a propylene glycol;
- (d) from about 1 to about 5% by weight of secondary emulsifier;
- and
- (e) the remainder, water to 100%,
- all weights being based on the total weight of the composition.
Dependencies are inferred from the claim text.