Water-soluble unit dose article comprising a solid laundry detergent composition

Patent metadata

Field	Value
Publication number	US-10501711-B2
Application number	US-201816005724-A
Country	US
Kind code	B2
Filing date	Jun 12, 2018
Priority date	Jun 15, 2017
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

Water-soluble unit dose article containing solid laundry detergent composition and water-soluble film.

First claim

What is claimed is:

1. A water-soluble unit dose article comprising a water-soluble film and a solid laundry detergent composition, wherein the water-soluble film defines a first internal compartment; and
wherein the solid laundry detergent composition is comprised within the first internal compartment; and
wherein the solid composition comprises a non-soap anionic surfactant; and
wherein the solid laundry detergent composition comprises particles and wherein the particles are spray-dried particles, agglomerates, extrudates, or a mixture thereof; and
wherein the solid composition at about 1 wt % dilution in deionized water at about 20° C. has an equilibrium pH in the range of from about 6.5 to about 8.8.

2. The water-soluble unit dose article according to claim 1 wherein the non-soap anionic surfactant comprises linear alkylbenzene sulphonate, alkoxylated alkyl sulphate or a mixture thereof.

3. The water-soluble unit dose article according to claim 2 wherein the weight ratio of linear alkylbenzene sulphonate to alkoxylated alkyl sulphate is from about 1:2 to about 20:1.

4. The water-soluble unit dose article according to claim 1 , wherein the solid laundry detergent composition comprises between about 20% and about 75% by weight of the solid laundry detergent composition of the non-soap anionic surfactant.

5. The water-soluble unit dose article according to claim 1 wherein the solid laundry detergent composition comprises an adjunct ingredient, wherein the adjunct ingredient is selected from non-ionic surfactants, cationic polymers, brightener, dye transfer inhibitors, chelants, enzymes, acrylate-based polymers, perfumes and perfume capsules, polyester terephthalate polymers, PEG-based polymers, ethoxylated polyethyleneimines, polysaccharides, amine oxide, aesthetic dyes, hueing dyes, antifoams, or a mixture thereof.

6. The water-soluble unit dose article according to claim 1 wherein the equilibrium pH is between about 6.7 and about 8.5.

7. The water-soluble unit dose article according to claim 1 wherein the agglomerates comprise non-soap surfactant, sodium sulphate and silica.

8. The water-soluble unit dose article according to claim 1 wherein the solid laundry detergent composition is a free flowing particulate solid, a compressed particulate solid or a mixture thereof and has a mean particle size between about 400 microns and about 1000 microns.

9. The water-soluble unit dose article according to claim 1 wherein the solid laundry detergent composition has a bulk density of between about 400 and about 1000 g/l.

10. The water-soluble unit dose article according to claim 9 wherein the solid laundry detergent composition has a bulk density of between about 500 and about 800 g/l.

11. The water-soluble unit dose article according to claim 1 wherein the first compartment comprises between about 1 g and about 25 g of the solid laundry composition.

12. The water-soluble unit dose article according to claim 11 wherein the first compartment comprises between about 5 g and about 20 g of the solid laundry composition.

13. The water-soluble unit dose article according to claim 1 wherein the water-soluble film comprises a blend of polyvinylalcohol polymers and/or polyvinylalcohol copolymers.

14. The water-soluble unit dose article according to claim 13 wherein the water-soluble film comprises a blend of polyvinylalcohol polymers and/or polyvinylalcohol copolymers selected from sulphonated and carboxylated anionic polyvinylalcohol copolymers.

15. The water-soluble unit dose article according to claim 1 wherein the water-soluble unit dose article comprises at least a first compartment and a second compartment.

16. The water-soluble unit dose article according to claim 15 wherein the water-soluble unit dose article comprises at least a first compartment, a second compartment and a third compartment.

17. The water-soluble unit dose article according to claim 15 wherein the compartments are arranged in a side-by-side arrangement, a superposed arrangement or a mixture thereof.

18. The water-soluble unit dose article according to claim 16 wherein at least the second compartment, the third compartment or both comprise a liquid.

19. A method of washing comprising the steps of adding the water-soluble unit dose article according to claim 1 to sufficient water to dilute the solid laundry detergent composition by a factor of at least about 300 fold to create a wash liquor and contacting fabrics to be washed with said wash liquor.

20. A water-soluble unit dose article comprising a water-soluble film and a solid laundry detergent composition, wherein the water-soluble film defines a first internal compartment; and
wherein the solid laundry detergent composition is comprised within the first internal compartment; and
wherein the solid composition comprises a non-soap anionic surfactant; and
wherein the solid laundry detergent composition has a bulk density of between about 400 and about 1000 g/l; and
wherein the solid composition at about 1 wt % dilution in deionized water at about 20° C. has an equilibrium pH in the range of from about 6.5 to about 8.8.

21. A water-soluble unit dose article comprising a water-soluble film and a solid laundry detergent composition, wherein the water-soluble film defines a first internal compartment; and
wherein the solid laundry detergent composition is comprised within the first internal compartment; and
wherein the solid composition comprises a non-soap anionic surfactant; and
wherein the first compartment comprises between about 1 g and about 25 g of the solid laundry composition; and
wherein the solid composition at about 1 wt % dilution in deionized water at about 20° C. has an equilibrium pH in the range of from about 6.5 to about 8.8.

Assignees

• Procter & Gamble

Inventors

• Somerville Roberts Nigel Patrick
• Brooker Alan Thomas
• Pickering Carly
• Buijs Ned Peter

Classifications

• C11D3/3792

  Amine oxide containing polymers · CPC title

• C11D1/143

  Sulfonic acid esters · CPC title

• C11D3/124

  Silicon containing, e.g. silica, silex, quartz or glass beads · CPC title

• C11D17/044

  Solid compositions · CPC title

• C11D1/29

  Sulfates of polyoxyalkylene ethers · CPC title