# US 4,391,726 A · Detergent composition containing low levels of amine oxides

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- Number: US 4,391,726 A
- Document ID: US4391726A
- Status: Granted
- Kind: A
- Application number: 06/274,126
- Filed: 1981-06-16
- Granted: 1983-07-05
- Earliest claimed: 1980-11-28
- Assignees: The Procter & Gamble Company
- Inventors: Robertus J. C. Koster
- Web page: https://patentgrep.com/patent/US4391726A

## CPC

- C11D 1/75: Amino oxides
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

Detergent compositions having enhanced soil release and cleaning properties include from 0.1%-1.5% amide oxide having at least one long chain group and may include peroxybleach and detergent builder, and provide an alkaline laundry pH.

## Claims

### Claim 1

A particulate laundry detergent composition having enhanced soil release and cleaning properties comprising:
(a) from about 2% to about 25% by weight of a surface-active agent selected from the group consisting of anionic, nonionic, zwitterionic, and ampholytic detergents and mixtures thereof; and
(b) from 0.25-0.75% of an amine oxide having the formula ##STR3## wherein R is an alkyl or alkenylgroup having 10 to 22 carbon atoms, the R.sub.1 's which are identical or different are selected from C.sub.1-4 alkyl, ethylene oxide and propylene oxide, n is an integer from 1 to about 6, m is an integer from 0 to about 6, p is 0 or 1, x, y, and z are each 1 for alkylsubstituents, and integers in the range from 1 to 10 for ethylene oxide or propylene oxide substituents such that the sum of (x+y+z) is not greater than 25,
(c) from about 3% to about 50% by weight of a peroxybleach compound; and
(d) from about 1% to about 50% by weight of a detergent builder;
whereby a 1% aqueous solution of the composition, measured at 20.degree. C., has a pH in the range from about 8.5 to about 11.

### Claim 2 (depends on 1)

The composition in accordance with claim 1 wherein the detergent builder is present in an amount from about 10% to about 45% by weight.

### Claim 3 (depends on 1)

The detergent composition in accordance with claim 1 which in addition contains from 0.01% to 10% of a detergent suds regulant.

### Claim 4 (depends on 2)

The detergent composition in accordance with claim 2 wherein the detergent builder is a mixture of
(i) a water-soluble detergent builder selected from the group consisting of the water-soluble salts of nitrilotriacetic acid, polyphosphates and citrates; and
(ii) a synthetic crystalline water-insoluble aluminosilicate builder material selected from the group consisting of zeolite A, zeolite X and zeolite P(B), said aluminosilicate material containing at least 10% by weight of the silicate of water of hydration and having a particle size diameter in the range from 0.5 micron to 30 microns;
whereby the weight ratio of the water-soluble detergent builder: water-insoluble aluminosilicate builder is in the range from about 4:1 to about 1:4.

### Claim 5 (depends on 1)

The composition in accordance with claim 1, wherein the amine oxide is selected from the group consisting of N--C.sub.12-14 -coconutalkyl-N,N-dimethyl N-amine oxide; N-tallow C.sub.16-18 -alkyl-N,N',N-tri-(2-hydroxyethyl)-propylene-1,3-diamine-N,N'-dioxide; N--C.sub.12-14 -alkyl-N,N',N'-tri-(2-hydroxyethyl)propylene-1,3-diamine-N,N'-dioxide; N--C.sub.16-18 -tallow-alkyl-N,N-dimethyl-N-amine oxide; N--C.sub.12-14 -coconut alkyl-N,N-di-(2-hydroxyethyl)-N-amine oxide; or N--C.sub.16-18 -tallow-alkyl-N,N-di-(2-hydroxyethyl)-N-amine oxide.

### Claim 6 (depends on 1)

The composition in accordance with claim 1 wherein m in the structural formula for the amine oxide is 1.

### Claim 7 (depends on 6)

The composition in accordance with claim 6 wherein the amine oxide is N-hydrogenated tallow-N,N',N'-tri(2-hydroxyethyl)-propylene-1,3-diamine-N,N'-dioxide.

### Claim 8 (depends on 1)

The composition in accordance with claim 1, wherein the amine oxide is present in an amount ranging from 0.25 to 0.35% by weight.