# US 4,396,525 A · Phosphate free liquid scouring composition

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,396,525 A
- Document ID: US4396525A
- Status: Granted
- Kind: A
- Application number: 06/301,715
- Filed: 1981-09-14
- Granted: 1983-08-02
- Earliest claimed: 1981-09-14
- Assignees: Lever Brothers Company
- Inventors: Fred K. Rubin; David V. Blarcom; Daniel J. Fox
- Web page: https://patentgrep.com/patent/US4396525A

## CPC

- C11D 17/0013: {Liquid compositions with insoluble particles in suspension (C11D17/0021, C11D17/0026, C11D17/003 take precedence)}
- C11D 1/94: Mixtures with anionic, cationic or non-ionic compounds
- C11D 1/04: Carboxylic acids or salts thereof (soap C11D9/00)
- C11D 1/143: {Sulfonic acid esters}
- C11D 1/22: derived from aromatic compounds
- C11D 1/28: Sulfonation products derived from fatty acids or their derivatives, e.g. esters, amides
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

This invention discloses a liquid scouring composition comprising in percent by weight of the composition (a) about 0.5% to about 5% anionic surfactant; (b) about 0.5% to about 5% amphoteric surfactant; (c) about 5% to about 65% abrasive; (d) about 0.1% to about 8% electrolyte; (e) 0% to about 5% other ingredients; and (f) water to make 100%.

## Claims

### Claim 1

A liquid scouring composition consisting essentially of in percent by weight of the composition:
(a) about 0.5% to about 5% anionic surfactant;
(b) about 0.5% to about 5% alkyl-amido betaine surfactant;
(c) about 5% to about 65% abrasive;
(d) about 0.1% to about 8% electrolyte;
(e) 0% to about 5% other ingredients; and
(f) water to make 100%.

### Claim 2 (depends on 1)

A scouring composition according to claim 1 wherein said anionic surfactant is selected from the group consisting of soaps, alkyl aryl sulfonates having 8 to 18 carbon atoms in the alkyl group in a straight or branched chain, alkyl sulfonates, acylamino alkane sulfonates and mixtures thereof.

### Claim 3 (depends on 1)

A scouring composition according to claim 1 wherein said alkyl-amido betaine is a coco-amido betaine.

### Claim 4 (depends on 3)

A scouring composition according to claim 3 wherein said coco-amido betaine is coco-amido propyl dimethyl betaine.

### Claim 5 (depends on 1)

A scouring composition according to claim 1 wherein said abrasive is selected from the group consisting of calcite, dolomite, feldspar, silica flour, quartz, pumice, polishing clays, perlite, diatomite, alumina and mixtures thereof.

### Claim 6 (depends on 1)

A scouring composition according to claim 1 wherein said electrolyte is selected from the group consisting of alkali metal sulfates, carbonates, bicarbonates, halides, silicates, citrates, nitrates, alkaline earth salts of ethylene diamine tetraacetic acid, carboxymethyloxysuccinate, carboxymethyloxytartronate and mixtures thereof.

### Claim 7 (depends on 1)

A scouring composition according to claim 1 wherein said other ingredient is selected from the group consisting of bleaching agents, perfumes, coloring agents, ammonia, germicides, colloid forming agents, and mixtures thereof.