Low-foaming, acidic low-temperature cleaner and process for cleaning surfaces
AssigneeHenkel AG & Co. KGaA
InventorTheodore D. Held
Life of this patent
Estimating the term…
Abstract
Low-foaming industrial cleaning compositions comprising water; (A) at least one carboxylic acid; (B) one or more aromatic, water soluble or dispersible, non-ionic surfactants; and optionally, one or more of the following: (C) one or more salts of carboxylic acids selected from the group consisting of carboxylic acids that are the same as component (A), different from component (A) and mixtures thereof; and (D) an amount of hydrotrope material sufficient to produce a stable homogeneous solution or dispersion of components (A) through (C) in water; (E) a pH adjuster; (F) one or more polyhydric alcohols; and (G) one or more preservatives.
Claims25
A cleaning composition comprising water and:
- (A) at least one carboxylic acid;
- (B) one or more aromatic, water soluble or dispersible, non-ionic surfactants selected from alkoxylated aromatic alcohols having no alkyl, ring substituents;
- and alkoxylated aromatic alcohols having one or more alkyl, ring substituents of one to four carbons;
- (C) an amount of hydrotrope material sufficient to produce a stable homogeneous solution or dispersion of components (A) through (C) in water, wherein component (C) is selected from at least one ammonium or alkali metal salt of a sulfonate of toluene, xylene, or cumene;
- and optionally, one or more of the following:
- (D) one or more salts of carboxylic acids selected from the group consisting of carboxylic acids that are the same as component (A), different from component (A) and mixtures thereof;
- (E) a pH adjuster;
- (F) one or more polyhydric alcohols;
- and
- (G) one or more preservatives;
- wherein said cleaning composition comprises no more than about 1 percent by weight of phosphorus-containing components.
A cleaning composition comprising water and:
- (A) about 0.2 g/l to about 6.0 g/l of a component of at least one carboxylic acid wherein said component comprises molecules of which each contains at least one carboxyl group and, optionally, additional hydroxyl or carboxyl groups;
- (B) about 50 to about 3000 parts per million of a component of at least one surfactant selected from alkoxylated aromatic alcohols having no alkyl, ring substituents;
- and alkoxylated aromatic alcohols having one or more alkyl, ring substituents of one to four carbons;
- (C) optionally, one or more salts of carboxylic acids selected from the group consisting of carboxylic acids that are the same as component (A), different from component (A) and mixtures thereof;
- (D) about 25 to about 5000 parts per million of a hydrotrope material;
- (E) an amount of pH adjuster such that the pH of said composition is not less than 1.0 and not more than 4.0;
- (F) a component of one or more polyhydric alcohols;
- and
- (G) optionally, one or more preservatives.
A cleaning composition comprising water and:
- (A) at least one carboxylic acid;
- (B) one or more aromatic, water soluble or dispersible, non-ionic surfactants selected from alkoxylated aromatic alcohols having no alkyl, ring substituents;
- and alkoxylated aromatic alcohols having one or more alkyl, ring substituents of one to four carbons;
- (C) one or more water-soluble solvents selected from the group consisting of ethylene glycol n-butyl ether, diethylene glycol n-butyl ether, triethylene glycol methyl ether, propylene glycol n-butyl ether, dipropylene glycol methyl ether, propylene glycol methy ether, and propylene glycol n-propyl ether;
- and
- optionally, one or more of the following:
- (D) one or more salts of carboxylic acids selected from the group consisting of carboxylic acids that are the same as component (A), different from component (A) and mixtures thereof;
- (E) an amount of hydrotrope material sufficient to produce a stable homogeneous solution or dispersion of components (A) through (C) in water;
- (F) a pH adjuster;
- (G) one or more polyhydric alcohols;
- and
- (H) one or more preservatives;
- wherein said cleaning composition comprises no more than about 1 percent by weight of phosphorus-containing components.
Dependencies are inferred from the claim text.