Compositions containing alkyl sulfates and/or alkoxylated alkyl sulfates and a solvent comprising a diol

Patent metadata

Field	Value
Publication number	US-9840684-B2
Application number	US-201615058413-A
Country	US
Kind code	B2
Filing date	Mar 2, 2016
Priority date	Mar 2, 2016
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

The present invention relates generally to compositions containing an anionic surfactant selected from the group consisting of alkyl sulfates, alkoxylated alkyl sulfates, and mixtures thereof, and a solvent, particularly a solvent comprising one or more diols.

First claim

What is claimed is:

1. A process for manufacturing an aqueous liquid or gel-form laundry detergent comprising the steps of:
(i) at a first location, preparing a shippable anionic surfactant paste consisting essentially of:
from about 30% to about 75% by weight of an anionic surfactant selected from the group consisting of linear or branched alkyl sulfates, linear or branched alkoxylated alkyl sulfates, and mixtures thereof,
from about 3% to about 18% of a primary solvent of formula (I)

where each of R 1 and R 2 is independently selected from a substituted or unsubstituted C 1 -C 6 alkyl group and where each of R 3 and R 4 is independently selected from H, a branched or linear C 2 -C 6 alkyl group, an aryl group, or an alkyloxy group,
from about 0.1% to about 18% of a secondary solvent selected from the group consisting of a monoalcohol of formula (II)

wherein each of R 3 , R 4 , and R 5 is independently selected from H or a substituted or unsubstituted, linear or branched C 1 -C 6 alkyl group, glycerine, propoxylated glycerine, ethoxylated glycerine, 1,2-propylene glycol, diethylene glycol, dipropylene glycol, and mixtures thereof,
wherein the balance of the paste is water;

(ii) shipping the anionic surfactant paste to a second location;
(iii) at the second location, adding said anionic surfactant paste to a composition comprising a surfactant and adjuncts, thereby forming the laundry detergent.

2. A process according to claim 1 wherein said paste is substantially free of a diol having only terminal hydroxyl groups.

3. A process according to claim 1 wherein said paste is substantially free of a diol having only terminal hydroxyl groups, the distance between said terminal hydroxyl groups being 3 carbon atoms.

4. A process according to claim 1 wherein said paste is substantially free of 1, 3-propanediol and 2-methyl-1, 3-propanediol.

5. A process according to claim 1 wherein said anionic surfactant is C 12 -C 16 linear or branched alkoxylated alkyl sulfate.

6. A process according to claim 1 wherein said anionic surfactant is selected from the group consisting of 2-alkyl branched primary alkyl sulfates.

7. The process according to claim 1 wherein said adjunct is selected from the group consisting of a structurant, a builder, a fabric softening agent, a polymer or an oligomer, an enzyme, an enzyme stabilizer, a bleach system, a brightener, a hueing agent, a chelating agent, a suds suppressor, a conditioning agent, a humectant, a perfume, a perfume microcapsule, a filler or carrier, an alkalinity system, a pH control system, a buffer, an alkanolamine, and mixtures thereof.

8. The process according to claim 1 wherein said laundry detergent comprises an enzyme selected from the group consisting of lipase, amylase, protease, mannanase, cellulase, pectinase, and mixtures thereof.

9. The process according to claim 1 , wherein said laundry detergent comprises from about 0.001% to about 1% by weight of enzyme.

10. The process according to claim 1 wherein said laundry detergent is a form selected from the group consisting of a liquid laundry detergent, a gel detergent, a single-phase or multi-phase unit dose detergent, a detergent contained in a single-phase or multi-phase or multi-compartment water-soluble pouch, a laundry pretreat product, a fabric softener composition, and mixtures thereof.

11. The process according to claim 1 wherein said laundry detergent comprises less than about 20% water.

12. The process according to claim 1 wherein said laundry detergent is a detergent contained in a single-phase or multi-phase or multi-compartment water-soluble pouch.

13. A process for manufacturing an aqueous liquid or gel-form laundry detergent comprising the steps of:
(i) at a first location, preparing a shippable anionic surfactant paste consisting essentially of:
from about 30% to about 75%, by weight of an anionic surfactant selected from the group consisting of linear or branched alkyl sulfates, linear or branched alkoxylated alkyl sulfates, and mixtures thereof, from about 3% to about 18% of a solvent of formula (I)

where each of R 1 and R 2 is independently selected from a substituted or unsubstituted C 1 -C 6 alkyl group and where each of R 3 and R 4 is independently selected from H, a branched or linear C 2 -C 6 alkyl group, an aryl group, or an alkyloxy group, wherein the balance of said paste is water;
(ii) shipping the anionic surfactant paste to a second location;
(iii) at the second location, adding said anionic surfactant paste to a composition comprising a surfactant and adjuncts.

14. A process according to claim 5 wherein said anionic surfactant is C 14 -C 16 linear or branched alkoxylated alkyl sulfate.

Assignees

• Procter & Gamble

Inventors

• Scheibel Jeffrey John
• Cron Scott Leroy
• Stenger Patrick Christopher
• Depa Praveen Kumar

Classifications

• C11D3/43 Primary

  Solvents · CPC title

• C11D17/045

  Multi-compartment · CPC title

• C11D1/29

  Sulfates of polyoxyalkylene ethers · CPC title

• C11D17/0008

  aqueous liquid non soap compositions (C11D3/0015, C11D3/3947, C11D3/3956 take precedence) · CPC title

• C11D11/0017

  Chemistry & Metallurgy · mapped topic