Fibrous elements comprising polyethylene oxide

Patent metadata

Field	Value
Publication number	US-10968537-B2
Application number	US-201916413979-A
Country	US
Kind code	B2
Filing date	May 16, 2019
Priority date	Jan 21, 2016
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

Fibrous elements containing one or more fibrous element-forming materials and one or more polyethylene oxides, and methods for making same are provided.

First claim

What is claimed is:

1. A fibrous structure comprising a plurality of fibrous elements and a plurality of active agent-containing particles, wherein the plurality of fibrous elements comprise one or more fibrous element-forming materials and a first polyethylene oxide, wherein the first polyethylene oxide exhibits a weight average molecular weight of greater than 10,000 g/mol but less than 500,000 g/mol as measured according to the Weight Average Molecular Weight Test Method.

2. The fibrous structure according to claim 1 wherein the plurality of fibrous elements further comprises a second polyethylene oxide that exhibits a weight average molecular weight of at least 500,000 g/mol as measured according to the Weight Average Molecular Weight Test Method.

3. The fibrous structure according to claim 2 the first polyethylene oxide and the second polyethylene oxide are present in the plurality of fibrous elements at a weight ratio of the first polyethylene oxide to the second polyethylene oxide of at least 1:2.

4. The fibrous structure according to claim 2 wherein the first polyethylene oxide and the second polyethylene oxide are present in the plurality of fibrous elements as a blend.

5. The fibrous structure according to claim 1 wherein at least one of the fibrous element-forming materials comprises a polar solvent-soluble material.

6. The fibrous structure according to claim 5 wherein the polar solvent-soluble material comprises a water-soluble material.

7. The fibrous structure according to claim 1 wherein at least one of the fibrous element-forming materials comprises a polymer.

8. The fibrous structure according to claim 7 wherein the polymer is selected from the group consisting of: pullulan, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, polyvinyl pyrrolidone, carboxymethyl cellulose, sodium alginate, xanthan gum, tragacanth gum, guar gum, acacia gum, Arabic gum, polyacrylic acid, methylmethacrylate copolymer, carboxyvinyl polymer, dextrin, pectin, chitin, levan, elsinan, collagen, gelatin, zein, gluten, soy protein, casein, polyvinyl alcohol, starch, starch derivatives, hemicellulose, hemicellulose derivatives, proteins, chitosan, chitosan derivatives, polyethylene glycol, tetramethylene ether glycol, hydroxymethyl cellulose, and mixtures thereof.

9. The fibrous structure according to claim 8 wherein the polymer comprises polyvinyl alcohol.

10. The fibrous structure according to claim 1 wherein the plurality of fibrous elements further comprises an extensional aid.

11. The fibrous structure according to claim 1 wherein the plurality of fibrous elements further comprises one or more active agents.

12. The fibrous structure according to claim 11 wherein at least one of the active agents is releasable from the plurality of fibrous elements when the plurality of fibrous elements is exposed to conditions of intended use.

13. The fibrous structure according to claim 11 wherein at least one of the active agents is present within the plurality of fibrous elements.

14. The fibrous structure according to claim 11 wherein at least one of the active agents is present on a surface of the plurality of fibrous elements.

15. The fibrous structure according to claim 11 wherein at least one of the active agents comprises a surfactant.

16. The fibrous structure according to claim 15 wherein the surfactant is selected from the group consisting of: anionic surfactants, cationic surfactants, nonionic surfactants, zwitterionic surfactants, and mixtures thereof.

17. The fibrous structure according to claim 15 wherein the surfactant comprises a linear alkylbenzene sulfonate.

18. The fibrous structure according to claim 15 wherein the surfactant comprises an alkyl sulfate.

19. The fibrous structure according to claim 15 wherein the surfactant comprises linear alkylbenzene sulfonate and alkyl sulfate.

20. The fibrous structure according to claim 11 wherein at least one of the active agents is selected from the group consisting of: skin benefit agents, medicinal agents, lotions, fabric care agents, dishwashing agents, carpet care agents, surface care agents, hair care agents, air care agents, and mixtures thereof.

21. The fibrous structure according to claim 1 wherein at least one of the active agent-containing particles comprises an active agent selected from the group consisting of: surfactants, enzymes, builders, perfumes, suds suppressors, suds boosting agents, fabric softening agents, denture cleaning agents, hair cleaning agents, hair care agents, personal health care agents, hueing agents, bleaching agents, and mixtures thereof.

22. The fibrous structure according to claim 1 wherein at least one of the active agent-containing particles comprises a surfactant.

23. The fibrous structure according to claim 22 wherein the surfactant comprises a linear alkylbenzene sulfonate.

24. The fibrous structure according to claim 22 wherein the surfactant comprises an alkyl sulfate.

25. The fibrous structure according to claim 22 wherein the surfactant comprises linear alkylbenzene sulfonate and alkyl sulfate.

Assignees

• Procter & Gamble

Inventors

• Sivik Mark Robert
• Hamersky Mark William
• Mort Iii Paul R
• Montenegro-Alvarado Jose Manuel
• Lindberg Seth Edward

Classifications

• D01F1/10 Primary

  Other agents for modifying properties · CPC title

• D01F6/14

  from polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals · CPC title

• D01F6/34

  comprising unsaturated alcohols, acetals or ketals as the major constituent · CPC title

• D01F6/66 Primary

  from polyethers · CPC title

• C11D3/3707

  Polyethers, e.g. polyalkyleneoxides · CPC title