Method for delivering an active agent

Patent metadata

Field	Value
Publication number	US-11944693-B2
Application number	US-201816035760-A
Country	US
Kind code	B2
Filing date	Jul 16, 2018
Priority date	Jul 2, 2010
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

A method for delivering one or more oral care active agents to a mammal's mouth using a nonwoven web of filaments and/or fibers containing one or more oral care active agents that are releasable from the filaments and/or fibers is provided.

First claim

What is claimed is:

1. A method for delivering one or more oral care active agents to a mammal's mouth, the method comprising the steps:
a. providing a water-soluble nonwoven web comprising a plurality of water-soluble meltblown filaments and/or fibers produced from a filament-forming composition comprising from about 20% to about 80% by weight of the filament-forming composition of water, wherein the plurality of water-soluble meltblown filaments and/or fibers comprise of only one water-soluble filament-forming material and two or more oral care active agents present in the water-soluble filament-forming material that are releasable from the plurality of water-soluble meltblown filaments and/or fibers when the plurality of water-soluble meltblown filaments and/or fibers are exposed to conditions of intended use, wherein the total level of the water-soluble filament-forming material present in the plurality of water-soluble meltblown filaments and/or fibers is 80% or less by weight on a dry filament basis and the total level of the two or more oral care active agents present in the plurality of water-soluble meltblown filaments and/or fibers is 20% or greater by weight on a dry filament basis; and
b. triggering the release of at least one of the two or more oral care active agents from the plurality of water-soluble meltblown filaments and/or fibers.

2. The method according to claim 1 wherein the triggering step comprises exposing the plurality of water-soluble meltblown filaments and/or fibers to moisture.

3. The method according to claim 1 wherein the triggering step comprises exposing the filament to a temperature of greater than 75° F.

4. The method according to claim 1 wherein the triggering step comprises the step of applying a force to the filament.

5. The method according to claim 1 wherein two or more of the plurality of water-soluble meltblown filaments and/or fibers are inter-entangled in the water-soluble nonwoven web.

6. The method according to claim 1 wherein the triggering step comprises exposing the filament to a chemical reaction.

7. The method according to claim 1 wherein the triggering step results in the filament losing its filament structure.

8. The method according to claim 7 wherein the filament loses its filament structure as a result of at least a part of the filament swelling.

9. The method according to claim 7 wherein the filament loses its filament structure as a result of at least a part of the filament shrinking.

10. The method according to claim 1 wherein the step of triggering comprises forming a wash liquor by contacting the water-soluble nonwoven web with water.

11. The method according to claim 1 wherein the water-soluble nonwoven web exhibits an average disintegration time of less than 120 seconds/gram of sample as measured according to the Dissolution Test Method.

12. The method according to claim 1 wherein the water-soluble nonwoven web exhibits an average dissolution time of less than 950 seconds/gram of sample as measured according to the Dissolution Test Method.

13. The method according to claim 1 wherein the plurality of water-soluble meltblown filaments and/or fibers exhibit 20% or less by weight on a dry filament basis of moisture as measured according to the Water Content Test Method.

14. The method according to claim 1 wherein the water-soluble nonwoven web exhibits a thickness of greater than 0.01 mm as measured according to the Thickness Test Method.

15. The method according to claim 1 wherein the water-soluble nonwoven web comprises two or more different layers.

16. The method according to claim 1 wherein at least one of the two or more oral care active agents is selected from the group consisting of: teeth whitening agents, tooth care agents, mouthwash agents, periodontal gum care agents, and mixtures thereof.

17. The method according to claim 1 wherein at least one of the two or more oral care active agents comprises silica.

18. The method according to claim 1 wherein the water-soluble nonwoven web comprises a least one of the plurality of water-soluble meltblown filaments and/or fibers comprising an active agent selected from the group consisting of: effervescent agents, preservatives, lathering agents, deposition aid agents, coacervate-forming agents, clays, thickening agents, silicas, drying agents, odor control agents, cooling agents, warming agents, dyes, pigments, and mixtures thereof.

19. The method according to claim 1 wherein the step of providing a water-soluble nonwoven web comprises making the water-soluble nonwoven web from the plurality of water-soluble meltblown filaments and/or fibers.

Assignees

• Procter & Gamble

Inventors

• Glenn Jr Robert Wayne
• Gordon Gregory Charles
• Sivik Mark Robert
• Richards Mark Ryan
• Heinzman Stephen Wayne
• James Michael David
• Reynolds Geoffrey William
• Trokhan Paul Dennis
• Hamad-Ebrahimpour Alyssandrea Hope
• Denome Frank William
• Hodson Stephen Joseph

Classifications

• A61K8/0204 Primary

  Specific forms not provided for by any of groups A61K8/0208 - A61K8/14 · CPC title

• A61L27/50 Primary

  Materials characterised by their function or physical properties {, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials} · CPC title

• A61L27/54

  Biologically active materials, e.g. therapeutic substances {(A61L27/227 takes precedence)} · CPC title

• A61Q5/00

  Preparations for care of the hair · CPC title

• B08B9/20

  by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought {(washing or rinsing crockery or tableware A47L15/00)} · CPC title