# US 4,397,755 A · Stable liquid detergent suspensions

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- Number: US 4,397,755 A
- Document ID: US4397755A
- Status: Granted
- Kind: A
- Application number: 06/311,498
- Filed: 1981-10-15
- Granted: 1983-08-09
- Earliest claimed: 1980-10-16
- Assignees: Lever Brothers Company
- Inventors: John M. Brierley; Melvin Scott
- Web page: https://patentgrep.com/patent/US4397755A

## CPC

- C11D 17/0013: {Liquid compositions with insoluble particles in suspension (C11D17/0021, C11D17/0026, C11D17/003 take precedence)}
- C11D 3/1266: {in liquid compositions}
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

The invention pertains to liquid media, in which particulate materials can be stably suspended, e.g. liquid abrasive cleaning compositions. These products can suffer from a shear-stability problem, and according to the invention this problem can be overcome by the inclusion of a low level, e.g. 0.001-0.2% of a hectorite clay.

## Claims

### Claim 1

A liquid medium, capable per se of stably suspending under high extensional shear rates non-colloidal undissolved particulate material, comprising an aqueous medium in which is present:
(a) from 0.2 to 70% of non-colloidal undissolved particulate material;
(b) from 0.5 to 20% of anionic detergent material;
(c) from 0.5 to 25% of a water-soluble electrolyte; and
(d) from 0.001 to 0.15% of a hectorite clay,
all percentages being calculated on the final product.

### Claim 2 (depends on 1)

A liquid medium according to claim 1, in which the amount of the hectorite clay ranges from 0.01 to 0.2% by weight.

### Claim 3 (depends on 1)

A liquid medium according to claim 1, further comprising from 0.5 to 15% of a nonionic detergent material.

### Claim 4 (depends on 1)

A liquid detergent composition, comprising a liquid medium according to claim 1 and non-colloidal, undissolved particulate material stably suspended therein.

### Claim 5 (depends on 4)

A liquid detergent composition according to claim 4 comprising:
(a) from 0.5 to 20% by weight of one or more anionic detergents;
(b) from 0.5 to 15% by weight of one or more nonionic detergents;
(c) from 0.5 to 15% by weight of one or more water-soluble electrolytes;
(d) from 0.2 to 70% of one or more types of particulate abrasive materials;
(e) from 0.001 to 0.15% by weight of a hectorite clay; and
(f) the balance consisting of an aqueous medium.

### Claim 6 (depends on 5)

A composition according to claim 5, comprising:
(a) from 3 to 15% by weight of the anionic detergent;
(b) from 2-12% by weight of the nonionic detergent;
(c) from 0.5 to 10% by weight of the water-soluble electrolyte;
(d) from 5 to 55% by weight of the particulate abrasive material;
(e) from 0.01 to 0.15% by weight of a hectorite clay; and
(f) the balance consisting of an aqueous medium.