Porous dissolvable solid structure

Patent metadata

Field	Value
Publication number	US-11525104-B2
Application number	US-202016953975-A
Country	US
Kind code	B2
Filing date	Nov 20, 2020
Priority date	Nov 20, 2019
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A porous dissolvable solid can include an isethionate surfactant; a non-sulfate anionic surfactant; and an amphoteric surfactant, a zwitterionic surfactant, or a combination thereof.

First claim

What is claimed is:

1. A porous dissolvable solid structure, comprising:
a. from about 22% to about 41%, by weight of the porous dissolvable solid structure, of an isethionate surfactant selected from the group consisting of sodium cocoyl isethionate, sodium lauroyl methyl isethionate, or a combination thereof;
b. from about 7% to about 25%, by weight of the porous dissolvable solid structure, of a non-sulfate anionic surfactant comprising sodium cocoyl glutamate, disodium laureth sulfosuccinate, or a combination thereof;
c. from about 5% to about 25%, by weight of the porous dissolvable solid structure, lauramidopropyl betaine;
d. from about 18% to about 38%, by weight of the porous dissolvable solid structure, of polyvinyl alcohol;
e. from about 4.5% to about 20%, by weight of the porous dissolvable solid structure, of glycerin;
wherein said porous dissolvable solid structure has a density of from about 0.05 g/cm 3 to about 0.20 g/cm 3 ; and
wherein said porous dissolvable solid structure has a strain at break of 20 mm or more.

2. The porous dissolvable solid structure according to claim 1 , wherein the isethionate surfactant is from about 22% to about 30%, by weight of the porous dissolvable solid structure; and the non-sulfate anionic surfactant is from about 15% to about 25%, by weight of the porous dissolvable solid structure.

3. The porous dissolvable solid structure according to claim 1 , wherein the isethionate surfactant is from about 31% to about 41%, by weight of the porous dissolvable solid structure; and the non-sulfate anionic surfactant is from about 7% to about 18%, by weight of the porous dissolvable solid structure.

4. The porous dissolvable solid structure according to claim 1 , wherein the isethionate surfactant is from about 38% to about 41%, by weight of the porous dissolvable solid structure; the non-sulfate anionic surfactant is from about 7% to about 17%, by weight of the porous dissolvable solid structure; and the lauramidopropyl betaine is from about 7% to about 17%, by weight of the porous dissolvable solid structure.

5. The porous dissolvable solid structure according to claim 4 , wherein the isethionate surfactant is sodium cocoyl isethionate and the non-sulfate anionic surfactant comprises sodium cocoyl glutamate.

6. The porous dissolvable solid structure according to claim 4 , wherein the isethionate surfactant is sodium lauroyl methyl isethionate and sodium cocoyl isethionate and the non-sulfate anionic surfactant comprises sodium cocoyl glutamate.

7. The porous dissolvable solid structure according to claim 1 , wherein the isethionate surfactant is from about 22% to about 25%, by weight of the porous dissolvable solid structure and the non-sulfate anionic surfactant is from about 14% to about 17%, by weight of the porous dissolvable solid structure.

8. The porous dissolvable solid structure according to claim 1 , wherein the isethionate surfactant is from about 22% to about 25%, by weight of the porous dissolvable solid structure and the non-sulfate anionic surfactant is from about 22% to about 25%, by weight of the porous dissolvable solid.

9. The porous dissolvable solid structure according to claim 8 , wherein the isethionate surfactant is sodium cocoyl isethionate and the non-sulfate anionic surfactant comprises sodium cocoyl glutamate and disodium laureth sulfosuccinate.

10. The porous dissolvable solid structure according to claim 7 , wherein the isethionate surfactant is sodium cocoyl isethionate and the non-sulfate anionic surfactant comprises sodium cocoyl glutamate.

11. The porous dissolvable solid structure according to claim 1 , wherein the porous dissolvable solid structure comprises multiple layers.

12. The porous dissolvable solid of structure according to claim 1 , wherein the total surfactant amount is from about 40% to about 70%, by weight of the porous dissolvable solid structure.

13. The porous dissolvable solid structure according to claim 1 , wherein the porous dissolvable solid structure is an open celled foam.

14. The porous dissolvable solid structure according to claim 1 , further comprising additional non-sulfate anionic surfactants comprising sodium lauroyl sarcosinate, lauryl sarcosine, cocoyl sarcosine, sodium lauroyl glutamate, disodium lauryl sulfosuccinate, sodium cocoyl taurate, sodium lauroyl taurate, sodium lauroyl lactylate, sodium cocoyl lactylate, sodium lauroyl glycinate, sodium cocoyl glycinate, or a combination thereof.

15. The porous dissolvable solid structure according to claim 1 , further comprising zwitterionic surfactants comprising cocamidoethyl betaine, cocamidopropylamine oxide, cocamidopropyl betaine, cocamidopropyl dimethylaminohydroxypropyl hydrolyzed collagen, cocamidopropyldimonium hydroxypropyl hydrolyzed collagen, cocamidopropyl hydroxysultaine, cocobetaineamido amphopropionate, coco-betaine, coco-hydroxysultaine, coco/oleamidopropyl betaine, coco-sultaine, lauryl betaine, lauryl hydroxysultaine, lauryl sultaine, or a combination thereof.

16. The porous dissolvable solid structure according to claim 1 , further comprising zwitterionic surfactants comprising cocamidopropyl betaine, sodium lauroamphoacetate, sodium cocoamphoacetate, or a combination thereof.

Assignees

• Procter & Gamble

Inventors

• Tan Hongsing
• Glenn Jr Robert Wayne

Classifications

• C11D1/126

  Acylisethionates · CPC title

• C11D3/3753

  Polyvinylalcohol; Ethers or esters thereof · CPC title

• C11D1/90

  Betaines · CPC title

• C11D3/2065

  Polyhydric alcohols · CPC title

• C11D17/00 Primary

  Detergent materials or soaps characterised by their shape or physical properties (shaping soap C11D13/14) · CPC title