Method for dyeing keratinous material, comprising the use of an organosilicon compound, an effect pigment and a film-forming polymer II

Patent metadata

Field	Value
Publication number	US-12377034-B2
Application number	US-202017440703-A
Country	US
Kind code	B2
Filing date	Mar 13, 2020
Priority date	Mar 19, 2019
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

The subject of the present disclosure is a process for dyeing keratinous material, in particular human hair, comprising the following steps:
application of an agent (a) to the keratinous material, the agent (a) comprising at least one organic silicon compound, and Application of an agent (b) to the keratinous material, wherein the agent (b) comprises: (b1) at least one colorant compound comprising at least one lenticular substrate platelet-based pigment, and (b2) at least one film-forming polymer.

The application also discloses a multi-component packaging unit which contains the two agents (a) and (b) in two separately packaged containers.

First claim

The invention claimed is:

1. A method for dyeing keratinous material, comprising the following steps:
applying an agent (a) to the keratinous material, the agent (a) comprising an organic silicon compound, wherein the organic silicon compound comprises a compound of formula (IV);
R 9 Si(OR 10 ) k (R 11 )m   (IV),

wherein
R 9 stands for a C 1 -C 18 alkyl group,
R 10 represents a hydrogen atom or a C 1 -C 6 alkyl group,
R11 represents a C 1 -C 6 alkyl group,
k is an integer from 1 to 3, and
m stands for the integer 3-k, and
applying an agent (b) to the keratinous material, wherein the agent (b) comprises:
(b1) a colorant compound comprising a lenticular substrate platelet-based pigment, and
(b2) a film-forming polymer.

2. The method according to claim 1 , wherein the agent (a) comprises at least one organic silicon compound selected from silanes having one, two or three silicon atoms.

3. The method of claim 1 , wherein the lenticular substrate platelet-based pigment comprises a substrate wafer, wherein the substrate wafer comprises a material selected from the group of metals, metal alloys and metal oxides.

4. The method of claim 1 , wherein the lenticular substrate platelet-based pigment comprises aluminum.

5. The method according to claim 1 , wherein the lenticular substrate platelet-based pigment comprises a coating A of at least one low refractive index metal oxide and/or metal oxide hydrate having a refractive index of at most about 1.8.

6. The method of claim 1 , wherein the lenticular substrate platelet-based pigment comprises a coating B of at least one highly refractive metal oxide having a refractive index of at least about 1.9.

7. The method according to 6 , wherein the lenticular substrate platelet-based pigment has a further coating C of at least one metal oxide and/or metal oxide hydrate which is different from the underlying coating B.

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Lechner Torsten
• Weser Gabriele
• Kolonko Claudia
• Kriener Caroline
• Schumacher Ulrike
• Nowottny Marc
• Schoepgens Juergen
• Jaiser Phillip
• Mathiaszyk Carsten

Classifications

• A61Q5/065

  Preparations for temporary colouring the hair, e.g. direct dyes · CPC title

• A61K2800/884

  Sequential application · CPC title

• A61K2800/436

  Interference pigments, e.g. Iridescent, Pearlescent · CPC title

• A61K8/8176

  Homopolymers of N-vinyl-pyrrolidones. Compositions of derivatives of such polymers · CPC title

• A61K8/8158

  Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers · CPC title