# US 5,707,952 A · Thickened acid composition

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- Number: US 5,707,952 A
- Document ID: US5707952A
- Status: Granted
- Kind: A
- Application number: 08/639,068
- Filed: 1996-04-24
- Granted: 1998-01-13
- Earliest claimed: 1996-04-24
- Assignees: Colgate-Palmolive Company
- Inventors: Yves Lambremont; Claude Blanvalet
- Web page: https://patentgrep.com/patent/US5707952A

## CPC

- C11D 3/042: {Acids}
- C11D 3/2075: {Carboxylic acids-salts thereof}
- C11D 3/361: {Phosphonates, phosphinates or phosphonites}
- C11D 3/3726: {Polyurethanes}
- C11D 7/08: Acids
- C11D 17/003: {Colloidal solutions, e.g. gels; Thixotropic solutions or pastes}
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

An acidic thickened composition which is sprayable and readily clings to vertical walls and is effective in removing heavy encrusted lime scale and soap scum.

## Claims

### Claim 1

A thickened, shear thinning acidic compositions which comprises approximately by weight:
(a) 0 to 5 percent of an anionic surfactant;
(b) 1 to 5 percent of a nonionic surfactant;
(c) 0 to 1.0 percent of a preservative;
(d) 0.3 to 2.5 percent of a polyurethane/polyol polymeric thickener having a molecular weight of about 1,000 to about 1,000,000;
(e) 0 to 10 percent of a disinfectant;
(f) 0 to 1.0 percent of phosphoric acid;
(g) 0 to 0.5 percent of an amino alkylene phosphonic acid;
(h) 1 to 10 percent of a mono or dicarboxylic acid;
(i) 0.1 to 2 percent of a perfume, essential oil or water insoluble hydrocarbon;
(j) 0 to 10 % of a mineral acid; and
(k) the balance being water, wherein the composition has a pH of about 1 to about 4 and a Brookfield viscosity of about 200 to 1,000 cps at R.T. using a #2 spindle at 50 rpms.

### Claim 2 (depends on 1)

A composition according to claim 1, in which the carboxylic acid is a dicarboxylic acid and the ratio of dicarboxylic acid to said aminoalkylenephosphonic acid is in the range of 5:1 to 250:1.

### Claim 3 (depends on 1)

A composition according to claim 1 wherein the anionic surfactant is a water soluble salt of a lipophilic organic sulfuric acid and wherein the nonionic surfactant is a condensation product of a lipophilic alcohol or phenol with lower alkylene oxide, and wherein the aminoalkylenephosphonic acid is selected from the group consisting of aminotris-(methylene-phosphonic acid), ethylenediamine tetra-(methylenephosphonic acid), hemamethylene diamine tetra-(methylenephosphonic acid) and diethylenetriamine penta-(methylenephosphonic acid) and mixtures thereof.

### Claim 4 (depends on 1)

A composition according to claim 1, wherein said carboxylic acid is an alpha hydroxy alphatic acid.

### Claim 5 (depends on 1)

A composition according to claim 1, wherein the acid is a monocarboxylic acid.