Compositions with reduced dye-transfer properties

Patent metadata

Field	Value
Publication number	US-10487294-B2
Application number	US-201615552672-A
Country	US
Kind code	B2
Filing date	Feb 9, 2016
Priority date	Mar 2, 2015
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A method of protecting a colored or dyed substrate from dye transfer during exposure to aqueous cleansing solutions, the method comprising the step of treating said a dyed or colored substrate with a composition comprising a surfactant system, wherein said system comprises a biosurfactant in the range 50-100 wt. % of the total surfactant system.

First claim

The invention claimed is:

1. A method of protecting a coloured or dyed substrate from dye transfer during exposure to an aqueous cleansing solution,
the method comprising the step of treating said dyed or coloured substrate with a composition comprising a surfactant system,
wherein said surfactant system comprises a glycolipid biosurfactant in the range 50-100 wt. %, and
wherein said surfactant system is a total surfactant content of the composition.

2. A method according to claim 1 wherein the method further comprises the step of applying a dye to the substrate.

3. A method according to claim 1 wherein the method comprises the step of applying an aqueous solution comprising the composition to the substrate for a time period of 1 minute to 2 hours before rinsing.

4. A method of dyeing a substrate, the method comprising the steps of
a. Applying a dye to the substrate and,
b. Applying to the substrate a composition comprising a surfactant system comprising 50-100 wt. % glycolipid biosurfactant, wherein said surfactant system is a total surfactant content of the composition.

5. A method according to claim 4 wherein step b. follows step a.

6. A method according to claim 3 comprising the further step of rinsing the applied dye and/or glycolipid biosurfactant from the substrate using water.

7. A method according to claim 1 wherein the substrate is a fabric and/or human hair.

8. A method according to claim 1 wherein the glycolipid biosurfactant comprises a rhamnolipid or a sophorolipid.

9. A method according to claim 8 wherein the rhamnolipid comprises a ratio of mono-rhamnolipid:di-rhamnolipid (R1:R2) such that R2 is always greater in proportion by weight to R1.

10. A method according to claim 9 wherein the rhamnolipid is 100 wt. % di-rhamnolipid (R2).

11. A kit for dyeing hair comprising a dye composition and a composition comprising a glycolipid biosurfactant according to claim 1 .

Assignees

• Conopco Inc

Inventors

• Petkov Jordan Todorov
• Stevenson Paul Simon

Classifications

• A61K8/602

  Glycosides, e.g. rutin · CPC title

• C11D3/0021 Primary

  Dye-stain or dye-transfer inhibiting compositions · CPC title

• C11D1/83 Primary

  Mixtures of non-ionic with anionic compounds · CPC title

• A61Q5/004

  Preparations used to protect coloured hair · CPC title

• C11D1/06

  Ether- or thioether carboxylic acids · CPC title