# US 7,745,384 B2 · Acidic hard surface cleaning comprising an ethoxylated quaternary ammonium/amine surfactant mixture

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- Number: US 7,745,384 B2
- Document ID: US7745384B2
- Status: Granted
- Kind: B2
- Application number: 12/063,738
- Filed: 2007-07-18
- Published: 2009-08-06
- Granted: 2010-06-29
- Earliest claimed: 2006-07-31
- Assignees: Reckitt Benckiser (UK) Limited
- Inventors: Lisa Perry; James Young
- Web page: https://patentgrep.com/patent/US7745384B2

## CPC

- C11D 3/042: {Acids}
- C11D 1/835: Mixtures of non-ionic with cationic compounds
- C11D 3/2075: {Carboxylic acids-salts thereof}
- C11D 3/2086: {Hydroxy carboxylic acids-salts thereof}
- C11D 3/225: {etherified, e.g. CMC}
- C11D 17/003: {Colloidal solutions, e.g. gels; Thixotropic solutions or pastes}
- C11D 1/62: Quaternary ammonium compounds
- C11D 1/72: Ethers of polyoxyalkylene glycols
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

The present invention relates to hard surface cleaning compositions useful in cleaning, and optionally a disinfecting or sanitizing benefit which are particularly adapted to clean lavatory appliances, particularly toilets and the like. The compositions are largely aqueous, thickened, acidic compositions which comprise an acid, a thickening constituent or constituents which form a thickener system, at least one detersive surfactant and at least one superwetter surfactant which is based on a narrow range ethoxylated alcohol nonionic surfactant having two cloud points.

## Claims

### Claim 1

A largely aqueous, thickened, acidic composition which exhibits a pH of 4 or less, which comprises:
(a) at least one acid;
(b) a thickener system which comprises:
(b1) a film-forming fatty quaternary ammonium compound according to the following structure:
wherein R is a C8-C32 alkyl chain, R′ is a lower C1-C6 alkyl or alkylene group, the sum of both n is between 12-48, and X is a salt-forming counterion which renders the compound water soluble or water dispersible; and
(b2) an alkoxylated primary, secondary or tertiary fatty amine compound;
(c) at least one superwetter surfactant which is based on a narrow range ethoxylated alcohol nonionic surfactant having two cloud points wherein the narrow range ethoxylated alcohol nonionic surfactant having two cloud points is a C9-C11 nonionic surfactant characterized by one or more of the following:
(i) having approximately 5.5 mols ethoxylation, and/or
(ii) exhibits an HLB value of about 12-12.4, and/or
(iii) when dispersed or dissolved at a 1% concentration in water, said narrow range ethoxylated alcohol nonionic surfactant exhibits one cloud point at 24-29° C. and a second cloud point at 55-58° C.; and
(d) at least one additional detersive surfactant.

### Claim 2 (depends on 1)

A composition according to claim 1 wherein the at least one additional detersive surfactant comprises tallowtrimethylammonium chloride.

### Claim 3 (depends on 1)

A composition according to claim 1 wherein the pH of the composition is 1 or less.

### Claim 4 (depends on 1)

A composition according to claim 1 wherein the at least one acid is selected from the group consisting of citric acid, formic acid, hydrochloric acid, and mixtures thereof, to the exclusion of other acids.

### Claim 5 (depends on 1)

A method for the cleaning of hard surfaces, which method includes the step of applying a cleaning effective amount of a composition according to claim 1 to provide a cleaning benefit.