Water-soluble unit dose article

Patent metadata

Field	Value
Publication number	US-2021380902-A1
Application number	US-202117339004-A
Country	US
Kind code	A1
Filing date	Jun 4, 2021
Priority date	Jun 5, 2020
Publication date	Dec 9, 2021
Grant date	—

Abstract

A water-soluble unit dose article containing a water-soluble film a liquid laundry detergent composition having a first anionic surfactant, and a method of making the water-soluble unit dose article.

First claim

What is claimed is:

1 . A water-soluble unit dose article comprising a liquid laundry detergent composition and a water-soluble film;
wherein the liquid laundry detergent composition comprises a first anionic surfactant, wherein said first anionic surfactant comprises a mixture of surfactant isomers according to Formula I and surfactant isomers according to Formula II:

wherein m is between 4 and 11, and n is between 0 and 5, and
wherein about 50% to about 100% by weight of the first anionic surfactant are isomers having m+n equal to 9, or wherein about 50% to about 100% by weight of the first anionic surfactant are isomers having m+n equal to 11;
or wherein about 50% to about 100% by weight of the first anionic surfactant are a mixture of isomers having m+n equal to 9 or 11; and
wherein between about 25% and about 50% by weight of the mixture of surfactant isomers of Formula I have n=0; and
wherein from about 0.001% to about 25%, by weight of the first anionic surfactant are surfactants according to Formula II; and
wherein X is sulfate.

2 . The water-soluble unit dose article according to claim 1 , wherein the water-soluble unit dose article comprises between about 1% and about 20% by weight of the water-soluble unit dose article of the first anionic surfactant.

3 . The water-soluble unit dose article according to claim 2 , wherein the water-soluble unit dose article comprises between about 2% and about 10% by weight of the water-soluble unit dose article of the first anionic surfactant.

4 . The water-soluble unit dose article according to claim 1 , wherein m is between 6 and 11.

5 . The water-soluble unit dose article according to claim 1 , wherein about 15% to about 40% of the mixture of surfactant isomers of Formula I have n=1.

6 . The water-soluble unit dose article according to claim 1 , wherein about 60% to about 90% of the mixture of surfactant isomers of Formula I have n<3.

7 . The water-soluble unit dose article according to claim 1 , wherein about 90% to about 100% of the first anionic surfactant are isomers having m+n=11, or wherein about 90% to about 100% of the first anionic surfactant are isomers having m+n=9.

8 . The water-soluble unit dose article according to claim 1 , wherein from about 5% to about 20% by weight of the first anionic surfactant mixture are isomers of Formula I with n=2.

9 . The water-soluble unit dose article according to claim 1 , wherein up to about 40% of the mixture of surfactant isomers of Formula I have n>2.

10 . The water-soluble unit dose article according to claim 1 wherein the water-soluble film comprises a polyvinylalcohol homopolymer or a polyvinylalcohol copolymer or a mixture thereof.

11 . The water-soluble unit dose article according to claim 1 , wherein the liquid laundry detergent composition comprises a further surfactant selected from a second anionic surfactant, a non-ionic surfactant or a mixture thereof.

12 . The water-soluble unit dose article according to claim 12 , wherein the liquid laundry detergent composition comprises a second anionic surfactant, wherein the second anionic surfactant is selected from an alkoxylated alkyl sulphate anionic surfactant, a linear alkylbenzene sulphonate, or a mixture thereof.

13 . The water-soluble unit dose article according to claim 13 , wherein the linear alkylbenzene sulphonate comprises C 10 -C 16 alkyl benzene sulfonate, C 11 -C 14 alkyl benzene sulphonate, or a mixture thereof.

14 . The water-soluble unit dose article according to claim 12 wherein the liquid laundry detergent composition comprises a non-ionic surfactant, wherein the non-ionic surfactant preferably comprises an alkoxylated alcohol, wherein the alkoxylated alcohol is derived from a synthetical alcohol, a natural alcohol or a mixture thereof.

15 . The water-soluble unit dose article according to claim 12 , wherein the liquid detergent composition comprises between about 20% and about 60%, by weight of the liquid laundry treatment composition of the first anionic surfactant, the second anionic surfactant and the non-ionic surfactant.

16 . The water-soluble unit dose article according to claim 12 , wherein the ratio of the first anionic surfactant and the second anionic surfactant to the non-ionic surfactant is from about 1:1 to about 20:1, from about 1.5:1 to about 17.5:1, from about 2:1 to about 15:1, or from about 2.5:1 to about 13:1.

17 . The water-soluble unit dose article according to claim 1 wherein the liquid laundry detergent composition comprises between about 1% and about 15%, weight of the liquid laundry detergent composition of water.

18 . The water-soluble unit dose article according to claim 1 wherein the liquid laundry detergent composition comprises an amphoteric surfactant.

19 . A process of making a water-soluble unit dose article comprising the steps of:
a. deforming a first water-soluble film to create an open compartment; b. dosing a liquid laundry detergent composition from a nozzle into the open compartment; c. closing the filled open compartment from step b with a second water-soluble film; d. sealing the first and second water-soluble films together. wherein the liquid laundry detergent composition comprises a first anionic surfactant, wherein said first anionic surfactant comprises a mixture of surfactant isomers according to Formula I and surfactant isomers according to Formula II:

wherein m is between 4 and 11, and n is between 0 and 5, and
wherein about 50% to about 100% by weight of the first anionic surfactant are isomers having m+n equal to 9, or wherein about 50% to about 100% by weight of the first anionic surfactant are isomers having m+n equal to 11;
or wherein about 50% to about 100% by weight of the first anionic surfactant are a mixture of isomers having m+n equal to 9 or 11; and
wherein between about 25% and about 50% by weight of the mixture of surfactant isomers of Formula I have n=0; and
wherein from about 0.001% to about 25%, by weight of the first anionic surfactant are surfactants according to Formula II; and
wherein X is sulfate.

20 . The process according to claim 19 , wherein the first water-soluble film creates a seal area adjacent to the open compartment, and wherein the first and second water-soluble films are sealed together in the seal area.

Assignees

• Procter & Gamble

Inventors

• Vinson Phillip Kyle
• Becks Vincent John
• Langevin Rebecca Ann
• Wang Mu
• Andriessen Hilde Francoise Louise
• Depoot Karel Jozef Maria
• Keuleers Robby Renilde Francois

Classifications

• C11D17/044

  Solid compositions · CPC title

• C11D1/83

  Mixtures of non-ionic with anionic compounds · CPC title

• C11D1/75

  Amino oxides · CPC title

• C11D1/72

  Ethers of polyoxyalkylene glycols · CPC title

• C11D1/14

  derived from aliphatic hydrocarbons or mono-alcohols · CPC title