Pigment suspension and cosmetic agent prepared using the pigment suspension

Patent metadata

Field	Value
Publication number	US-12220470-B2
Application number	US-202118005808-A
Country	US
Kind code	B2
Filing date	May 27, 2021
Priority date	Jul 17, 2020
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A pigment suspension, a cometic agent obtainable from a pigment suspension, and a kit-of-parts containing a pigment suspension are provided. A pigment suspension includes (a) at least one coloring compound selected from the group consisting of pigments, (b) at least one phosphoric ester, and (c) water.

First claim

The invention claimed is:

1. A pigment suspension comprising
a) at least one coloring compound selected from the group consisting of pigments,
b) at least one phosphoric ester comprising an ester of orthophosphoric acid with an aliphatic alcohol, and
c) water.

2. The pigment suspension of claim 1 , wherein the coloring compound comprises a pigment selected from the group of iron oxide pigments.

3. The pigment suspension of claim 2 , wherein the iron oxide pigment is selected from the group consisting of black iron oxide (CI 77499), yellow iron oxide (CI 77492), red iron oxide (CI 77491), and mixtures thereof.

4. The pigment suspension of claim 1 , wherein at least one coloring compound has a particle diameter of from 100 to 1,000 nm.

5. The pigment suspension of claim 1 , wherein the at least one coloring compound comprises an organic pigment.

6. The pigment suspension of claim 1 , wherein the at least one coloring compound comprises at least one organic pigment selected from the group consisting of carmine, quinacridone, phthalocyanine, Sorgho, blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the color index numbers CI 61565, CI 61570, CI 74260, orange pigments with the color index numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with the color index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470, and mixtures thereof.

7. The pigment suspension of claim 1 , wherein the at least one coloring compound has a particle diameter of from 150 to 700 nm.

8. The pigment suspension of claim 1 , wherein the at least one phosphoric acid ester comprises an ester of orthophosphoric acid with a branched aliphatic alcohol having 11 to 14 carbon atoms.

9. The pigment suspension of claim 1 , wherein the at least one phosphoric acid ester comprises an ester of orthophosphoric acid with an ethoxylated aliphatic alcohol having 8 to 18 carbon atoms.

10. The pigment suspension of claim 1 , wherein the at least one phosphoric acid ester comprises an ester having the INCI designation Ceteth-20 phosphates.

11. A cosmetic agent obtainable by combining a pigment suspension comprising (a) at least one coloring compound selected from the group consisting of pigments, (b) at least one phosphoric ester, wherein the at least one phosphoric ester comprises an ester of orthophosphoric acid with an aliphatic alcohol, and (c) water, with one or more organic C 1 -C 6 alkoxysilanes and/or condensation products thereof.

12. The cosmetic agent of claim 11 , wherein the cosmetic agent 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 independently of one another represent a C 1 -C 6 alkyl group,
a, stands for an integer from 1 to 3, and
b stands for 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
R5, R5′, R5″, R6, R6′ and R6″ independently represent a C 1 -C 6 alkyl group,
A, A′, A″, A′″ and A″″ independently represent a linear or branched divalent C 1 -C 20 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),

where
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,
provided that at least one of e, f, g, and h radicals are 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 represents a C 1 -C 6 alkyl group,
R 11 represents a C 1 -C 6 alkyl group
k is an integer from 1 to 3, and
m stands for the integer 3-k.

13. The cosmetic agent of claim 11 , wherein the cosmetic agent comprises at least two structurally different organic C 1 -C 6 alkoxysilanes.

14. A kit-of-parts for dyeing keratinous material, comprising separately packaged
a first container comprising an agent (a′) comprising:
(a1) at least one or more organic C 1 -C 6 -alkoxysilanes, and

a second container comprising an agent (a″) comprising:
(a2) a pigment suspension comprising (a) at least one coloring compound selected from the group consisting of pigments, (b) at least one phosphoric ester, and (c) water, wherein the at least one phosphoric ester a comprises an ester of orthophosphoric acid with an aliphatic alcohol.

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Weser Gabriele
• Schumacher Ulrike
• Kolonko Claudia
• Kriener Caroline
• Hodes Jing
• Bender Irmgard
• Jaiser Phillip
• Nowottny Marc
• Schoepgens Juergen
• Lechner Torsten
• Walter Andreas

Classifications

• A61Q5/065

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

• A61K2800/43

  Pigments; Dyes · CPC title

• A61K2800/412

  Microsized, i.e. having sizes between 0.1 and 100 microns · CPC title

• A61K8/585

  Organosilicon compounds · CPC title

• A61K8/55

  Phosphorus compounds · CPC title