Pigment suspension and method for dying keratinous material using the pigment suspension

Patent metadata

Field	Value
Publication number	US-12048756-B2
Application number	US-202017785875-A
Country	US
Kind code	B2
Filing date	Oct 16, 2020
Priority date	Dec 16, 2019
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

A pigment suspension is provided. In one example, the pigment suspension includes a) at least one colorant compound selected from the group of pigments, b) at least one C 1 -C 10 alcohol, c) at least one diol, d) at least one thickening agent, and e) water. A method for dyeing keratinous material and a multi-component packaging unit (kit-of-parts) for dyeing keratinous material including a pigment suspension are also provided.

First claim

The invention claimed is:

1. A pigment suspension comprising:
a) at least one colorant compound selected from the group of pigments, wherein the at least one colorant compound comprises a pigment with a synthetic fluorophlogopite mica substrate,
b) at least one C 1 -C 10 alcohol,
c) at least one diol,
d) at least one thickening agent, and
e) water.

2. A pigment suspension according to claim 1 , wherein the pigment comprises a substrate platelet, wherein the substrate platelet comprises a metal, a metal alloy, natural mica, synthetic mica, or glass.

3. A pigment suspension according to claim 1 , wherein the at least one thickening agent is selected from the group of carboxymethyl cellulose, carboxymethylhydroxyethylcellulose, sulfoethylcellulose, carboxymethylsulfoethylcellulose, hydroxypropylsulfoethylcellulose, hydroxyethylsulfoethylcellulose, methlylsulfoethylcellulose, ethylsulfoethylcellulose, or mixtures thereof.

4. A pigment suspension according to claim 1 , wherein the at least one C1-C10 alcohol is selected from the group of ethanol, 2-propanol, or mixtures thereof.

5. A pigment suspension according to claim 1 , wherein the at least one diol is selected from the group of ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, or mixtures thereof.

6. A pigment suspension according to claim 1 , wherein the at least one thickening agent is selected from the group of propyl cellulose, methyl ethyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, methyl hydroxyethyl cellulose, ethyl hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethylcellulose, carboxymethylhydroxyethylcellulose, sulfoethylcellulose, carboxymethylsulfoethylcellulose, hydroxypropylsulfoethylcellulose, hydroxyethylsulfoethylcellulose, methylethylhydroxyethylcellulose, methlylsulfoethylcellulose, ethylsulfoethylcellulose, or mixtures thereof.

7. A method for dyeing keratinous material comprising the following steps:
applying an agent (a) to the keratinous material, wherein the agent (a) comprises:
(a1) at least one organic C 1 -C 6 -alkoxysilane, wherein the agent (a) comprises the at least one organic C 1 -C 6 -alkoxysilane in an amount of from about 50 to about 65 weight percent, based on a total weight of the agent (a), and

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

wherein at least one of the agent (a) and the agent (b) further comprises a pigment suspension comprising;
a) at least one colorant compound selected from the group of pigments, b) at least one C 1 -C 10 alcohol, c) at least one diol, d) at least one thickening agent, and e) water.

8. The method for dyeing keratinous material according to claim 7 , wherein the agent (a) comprises one or more organic C 1 -C 6 -alkoxysilanes of the formula (S-I) and/or (S-II) and/or (S-IV),
R 1 R 2 N-L-Si(OR 3 ) a (R 4 ) b   (S-I)

where
R 1 , R 2 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,
R 3 , R 4 are independent of each other for a C 1 -C 6 alkyl group,
a, represents an integer from 1 to 3, and
b is the integer 3-a, and
(R 5 O) c (R 6 ) d Si-(A) e -[NR 7 -(A′)] f -[O-(A″)] g -[NR 8 -(A″′)] h -Si(R 6 ′) d′ (OR 5 ′) c′   (S-II),

where
R 5 , R 5′ , R 5″ , R 6 , R 6′ and R 6′ ′ independently represent a C 1 -C 6 alkyl group,
A, A′, A″, A″′ and A″″ independently represent a linear or branched C 1 -C 20 divalent alkylene group,
R 7 and R 8 independently represent a hydrogen atom, a C 1 -C 6 alkyl group, a hydroxy-C 1 -C 6 alkyl group, a C 2 -C 6 alkenyl group, an amino-C 1 -C 6 alkyl group or a group of formula (S-III),
(A″″)-Si(R 6 ″) d ″(OR 5 ″) c ″  (S-III),

c, stands for an integer from 1 to 3,
d stands for the integer 3-c,
c′ stands for an integer from 1 to 3,
d′ stands for the integer 3-c′,
c″ stands for an integer from 1 to 3,
d″ stands for the integer 3-c″,
e stands for 0 or 1,
f stands for 0 or 1,
g stands for 0 or 1,
h stands for 0 or 1,
with the proviso that at least one of the radicals from e, f, g and h is different from 0,

and/or
R 9 Si(OR 10 ) k (R 11 ) m   (S-IV),

where
R 9 represents a C 1 -C 12 alkyl group,
R 10 stands for a C 1 -C 6 alkyl group,
R 11 stands for a C 1 -C 6 alkyl group
k is an integer from 1 to 3, and
m stands for the integer 3-k.

9. The method for dyeing keratinous material according to claim 7 , wherein the agent (a) comprises at least two structurally different organic C 1 -C 6 alkoxysilanes.

10. A multi-component packaging unit (kit-of-parts) for dyeing keratinous material, comprising separately prepared:
a first container comprising an agent (a′), wherein the agent (a′) comprises:
(a1) at least one or more C 1 -C 6 organic alkoxysilanes in an amount of from about 50 to about 65 weight percent, based on a total weight of the agent (a′),

a second container comprising an agent (a″), wherein the agent (a″) comprises:
(a2) a pigment suspension according to claim 1 , and

a third container comprising an agent (b″), said agent comprising (b″):
(b1) a sealing reagent.

11. A multi-component packaging unit (kit-of-parts) for dyeing keratinous material, comprising separately prepared:
a first container comprising an agent (a), wherein the agent (a) comprises:
(a1) at least one or more C 1 -C 6 organic alkoxysilanes in an amount of from about 50 to about 65 weight percent, based on a total weight of the agent (a),

a second container comprising an agent (b′), wherein the agent (b′) comprises:
(b1) a sealing reagent, and

a third container comprising an agent (b″), the agent (b″) comprising:
(b2) a pigment suspension according claim 1 .

Assignees

• Henkel Ag & Co Kgaa

Inventors

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

Classifications

• A61Q5/10

  Preparations for permanently dyeing the hair · CPC title

• A61K2800/95

  Involves in-situ formation or cross-linking of polymers · CPC title

• A61K2800/884

  Sequential application · CPC title

• A61K2800/43

  Pigments; Dyes · CPC title

• A61K8/8147

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers · CPC title