# US 8,541,355 B2 · Process to produce stable suspending system

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- Number: US 8,541,355 B2
- Document ID: US8541355B2
- Status: Granted
- Kind: B2
- Application number: 13/505,910
- Filed: 2010-11-04
- Published: 2012-08-23
- Granted: 2013-09-24
- Earliest claimed: 2009-11-04
- Assignees: Colgate-Palmolive Company
- Applicants: Melissa Marie Fleckenstein; Deborah Ann Peru; Kevin Mark Kinscherf; Robert Tavares; Cynthia Murphy; Dipak Patel; John Pettinari; Robert D'Ambrogio; Jodie Berta; Andrei Potanin
- Inventors: Melissa Marie Fleckenstein; Deborah Ann Peru; Kevin Mark Kinscherf; Robert Tavares; Cynthia Murphy; Dipak Patel; John Pettinari; Robert D'Ambrogio; Jodie Berta; Andrei Potanin
- Web page: https://patentgrep.com/patent/US8541355B2

## CPC

- C11D 3/222: {Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin}
- C11D 3/0052: {Gas evolving or heat producing compositions}
- C11D 17/0013: {Liquid compositions with insoluble particles in suspension (C11D17/0021, C11D17/0026, C11D17/003 take precedence)}
- C11D 17/0026: {Structured liquid compositions, e.g. liquid crystalline phases or network containing non-Newtonian phase}
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

A process that degasses a structured surfactant composition that comprises at least one surfactant, water, and at least one suspending agent chosen from polysaccharides, gums, and celluloses. By degassing the composition, the suspending agent can form a structured system. Gas, such as air bubbles, disrupts the formation of the structuring system, which reduces the ability of the composition to suspend materials.

## Claims

### Claim 1

A process comprising
a) mixing at least one surfactant, water, and at least one suspending agent chosen from polysaccharides, gums, and celluloses to form a liquid composition;
b) degassing the composition; and
c) measuring an amount of gas in the composition according to the Gas Bubble Test.

### Claim 2 (depends on 1)

The process of claim 1, wherein the suspending agent comprises gellan gum.

### Claim 3 (depends on 1)

The process of claim 1, wherein the suspending agent comprises microfibrous cellulose.

### Claim 4 (depends on 1)

The process of claim 1, wherein the suspending agent comprises a 6:3:1 by weight blend of microfibrous cellulose:xanthan gum:carboxymethyl cellulose.

### Claim 5 (depends on 1)

The process of claim 1 further comprising mixing suspended material into the composition after degassing the composition.

### Claim 6 (depends on 1)

The process of claim 1 further comprising mixing suspended material into the composition before degassing the composition, wherein the suspended material is capable of maintaining itself in the degassing step.

### Claim 7 (depends on 1)

The process of claim 1, wherein the degassing occurs in a versator.

### Claim 8 (depends on 1)

The process of claim 1, wherein the amount of gas bubbles when measured on a linear channel after degassing is
(i) less than 6.2 counts/second in the 10-45 microns range,
(ii) less than 7.3 counts/second in the 45-80 microns range,
(iii) less than 3.7 counts/second in the 80-140 microns range,
(iv) less than 0.32 counts/second in the 140-200 microns range, and
(v) less than 1 count/second in the 200-500 microns range, optionally 0 counts/second.

### Claim 9 (depends on 8)

The process of claim 8 further comprising mixing suspended material into the composition after degassing.

### Claim 10 (depends on 1)

The process of claim 1, wherein the degassing occurs by allowing the composition to degas.