Method for delivering an active agent

Patent metadata

Field	Value
Publication number	US-10045915-B2
Application number	US-201514730658-A
Country	US
Kind code	B2
Filing date	Jun 4, 2015
Priority date	Jul 2, 2010
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A method for delivering one or more active agents to mammalian hair using a nonwoven web of filaments containing one or more hair care active agents that are releasable from the filaments is provided.

First claim

What is claimed is:

1. A method for delivering one or more active agents to mammalian hair, the method comprising the steps:
a. providing a nonwoven web comprising a plurality of filaments, wherein at least one of the filaments comprises one or more water-soluble filament-forming materials comprising a hydroxyl polymer selected from the group consisting of: polyvinyl alcohol, polysaccharides, and mixtures thereof and one or more hair care active agents present within the filament that are releasable from the filament when the filament is exposed to conditions of intended use, wherein the total level of the one or more filament-forming materials present in the filament is 50% or less by weight on a dry filament basis and the total level of the one or more active agents present in the filament is 50% or greater by weight on a dry filament basis; and
b. triggering the release of one or more of the hair care active agents from the filament.

2. The method according to claim 1 wherein the triggering step comprises exposing the filament to moisture.

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

4. A method for delivering one or more hair care active agents, the method comprising the steps:
a. providing a nonwoven web comprising a plurality of filaments, wherein at least one of the filaments comprises one or more water-soluble filament-forming materials comprising a hydroxyl polymer selected from the group consisting of: polyvinyl alcohol, polysaccharides, and mixtures thereof and one or more hair care active agents present within the filament that are releasable from the filament as the filament's morphology changes, wherein the total level of the one or more filament-forming materials present in the filament is less than 65% by weight on a dry filament basis and the total level of the one or more active agents present in the filament is greater than 35% by weight on a dry filament basis; and
b. triggering the release of one or more of the hair care active agents from the filament.

5. The method according to claim 4 wherein the triggering step comprises exposing the filament to moisture.

6. The method according to claim 4 wherein the step of triggering comprises forming a wash liquor by contacting the nonwoven web with water.

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

• C11D17/047

  Arrangements specially adapted for dry cleaning or laundry dryer related applications · CPC title

• A61L2300/602

  Type of release, e.g. controlled, sustained, slow · CPC title

• C11D17/042

  Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions · CPC title

• D06L1/00

  Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods · CPC title

• A61Q5/00

  Preparations for care of the hair · CPC title