Method for dyeing keratinous material, comprising the use of an organosilicon compound, an effect pigment and a post-treatment agent

Patent metadata

Field	Value
Publication number	US-12485077-B2
Application number	US-202017762029-A
Country	US
Kind code	B2
Filing date	Aug 25, 2020
Priority date	Sep 18, 2019
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A process for dyeing keratinous material, in particular human hair, is disclosed. The process comprises applying to the keratinous material an agent (a) and an agent (b). The agent (a) comprises: (a1) at least one organosilicon compound; and (a2) at least one color-imparting compound comprising at least one effect pigment comprising (A) a substrate platelet comprising synthetic mica and (β) a coating comprising at least a first metal oxide (hydrate) layer. The agent (b) comprises (b1) at least one sealing reagent. A multi-component packaging unit (kit-of-parts) for dyeing keratinous material is also provided, and comprises separately packaged containers including the agents or components thereof for use in the process.

First claim

The invention claimed is:

1 . A process for dyeing keratinous material, comprising:
applying an agent (a) to the keratinous material, wherein the agent (a) comprises:
(a1) at least one organic silicon compound of formula (I) and at least one organic silicon compound of formula (IV),
R 1 R 2 N-L-Si(OR 3 ) a (R 4 ) b   (I),

where
R 1 , R 2 each independently represent a hydrogen atom or a C 1 -C 6 alkyl group,
L is a linear or branched divalent C 1 -C 20 -alkylene group,
each R 3 , R 4 independently represents a C 1 -C 6 alkyl group,
a is an integer of from 1 to 3, and
b is the difference of 3−a:
R 9 Si(OR 10 ) k (R 11 ) m   (IV),

where
R 9 represents a C 1 -C 18 -alkyl group,
each R 10 independently represents a hydrogen atom or a C 1 -C 6 alkyl group,
each Ru represents a C 1 -C 6 alkyl group,
k is an integer of from 1 to 3, and
m is the difference of 3−k; and
(a2) at least one color-imparting compound comprising at least one effect pigment, the at least one effect pigment comprising
α) a substrate platelet comprising synthetic mica, and
β) a coating comprising at least a first metal oxide (hydrate) layer; and

applying an agent (b) to the keratinous material, wherein the agent (b) comprises:
(b1) at least one sealing reagent.

2 . The process of claim 1 , wherein the agent (a) comprises at least one organic silicon compound (a1) of formula (I), where:
R 1 , R 2 each represent a hydrogen atom, L is a linear divalent C 1 -C 6 alkylene group, each R 3 , R 4 independently represents a methyl group or an ethyl group, a is 3, and b is 0.

3 . The process of claim 2 , wherein the at least one organic silicon compound (a1) of formula (I) is selected from the group of (3-aminopropyl)triethoxysilane, (3-aminopropyl)trimethoxysilane, 1-(3-aminopropyl)silanetriol, (2-aminoethyl)triethoxysilane, (2-aminoethyl)trimethoxysilane, 1-(2-aminoethyl)silanetriol, (3-dimethylaminopropyl)triethoxysilane, (3-dimethylaminopropyl)trimethoxysilane, 1-(3-dimethylaminopropyl)silanetriol, (2-dimethylaminoethyl)triethoxysilane,(2-dimethylaminoethyl)trimethoxysilane, 1-(2-dimethylaminoethyl)silanetriol, and combinations thereof.

4 . The process of claim 1 , wherein at least one organic silicon compound (a1) of formula (IV) is selected from the group of methyltrimethoxysilane, methyltriethoxysilane ethyltrimethoxysilane ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, octadecyltrimethoxysilane, octadecyltriethoxysilane, and combinations thereof.

5 . The process of claim 1 , wherein the sealing reagent (b1) comprises a compound selected from the group of film forming polymers, alkalizing agents, acidifying agents, and combinations thereof.

6 . The process of claim 1 , wherein the first metal oxide (hydrate) layer of the coating β) comprises titanium dioxide (TiO 2 ).

7 . The process of claim 1 , wherein the coating β) further comprises a second metal oxide (hydrate) layer.

8 . The process of claim 7 , wherein the second metal oxide (hydrate) layer comprises a metal oxide (hydrate) selected from the group of tin oxide (SnO 2 ), silicon oxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), iron oxides (Fe 2 O 3 and/or Fe 3 O 4 ), and combinations thereof.

9 . The process of claim 7 , wherein the second metal oxide (hydrate) layer comprises tin oxide (SnO 2 ).

10 . The process of claim 1 , wherein the agent (a) comprises at least one color-imparting compound (a2) selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments, colored pigments based on natural mica coated with at least one metal oxide and/or a metal oxychloride, and combinations thereof.

11 . The process of claim 1 , wherein the agent (a) is applied in a first step and the agent (b) is applied in a second step.

12 . The process of claim 11 , wherein:
the at least one organic silicon compound (a1) of formula (I) is selected from the group of (3-aminopropyl)triethoxysilane, (3-aminopropyl)trimethoxysilane, 1-(3-aminopropyl)silanetriol, (2-aminoethyl)triethoxysilane, (2-aminoethyl)trimethoxysilane, 1-(2-aminoethyl)silanetriol, (3-dimethylaminopropyl)triethoxysilane, (3-dimethylaminopropyl)trimethoxysilane, 1-(3-dimethylaminopropyl)silanetriol, (2-dimethylaminoethyl)triethoxysilane,(2-dimethylaminoethyl)trimethoxysilane, 1-(2-dimethylaminoethyl)silanetriol, and combinations thereof; the at least one organic silicon compound (a1) of formula (IV) is selected from the group of methyltrimethoxysilane, methyltriethoxysilane ethyltrimethoxysilane ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, octadecyltrimethoxysilane, octadecyltriethoxysilane, and combinations thereof, and the first metal oxide (hydrate) layer of the coating β) comprises titanium dioxide (TiO 2 ).

13 . The process of claim 12 , wherein the sealing reagent is a film-forming polymer selected from the group of homopolymers and copolymers of acrylic acid, homopolymers and copolymers of methacrylic acid, homopolymers and copolymers of acrylic acid esters, homopolymers and copolymers of methacrylic acid esters, homopolymers and copolymers of acrylic acid amides, homopolymers and copolymers of methacrylic acid amides, homopolymers and copolymers of vinylpyrrolidone, homopolymers and copolymers of vinyl alcohol, homopolymers and copolymers of vinyl acetate, homopolymers and copolymers of ethylene, homopolymers and copolymers of propylene, homopolymers and copolymers of styrene, polyurethanes, polyesters and polyamides.

14 . The process of claim 13 , wherein:
the at least one organic silicon compound of formula (I) is (3-aminopropyl)triethoxysilane; the at least one organic silicon compound of formula (IV) is methyltriethoxysilane; the coating β) further comprises a second metal oxide (hydrate) layer comprising tin oxide (SnO 2 ); and the film-forming polymer is selected from acrylates/octylacrylamides copolymers, ethylene/sodium acrylic copolymer, or combinations thereof.

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Krohn Rene
• Hippe Thomas
• Hoepfner Stefan
• Brender Jessica

Classifications

• A61Q5/065 Primary

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

• A61K2800/884

  Sequential application · CPC title

• A61K2800/43

  Pigments; Dyes · CPC title

• A61K8/29

  Titanium; Compounds thereof · CPC title

• A61K8/25

  Silicon; Compounds thereof · CPC title