Cosmetic use as deodorant active agent of a siliceous material obtained by hydrolysis and condensation of a tetraalkoxysilane and of a C7-C20-alkyltrialkoxysilane

Patent metadata

Field	Value
Publication number	US-10596093-B2
Application number	US-201414893564-A
Country	US
Kind code	B2
Filing date	May 16, 2014
Priority date	May 30, 2013
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

The invention thus relates to the cosmetic use of a siliceous material that may be obtained by hydrolysis and condensation, in the presence of water, of at least one tetraalkoxysilane of formula (I) below: Si(OR2)4 (I) and of an alkyltrialkoxysilane of formula (II) below: R1Si(OR2)3 (H) in which: R1 denotes a C7 to C20 alkyl group, optionally interrupted in its chain with an O or S atom or with an NH group or a carbonyl group (CO), R2 denotes a C1-C4 alkyl group. Preferentially, the siliceous material is present in a composition comprising a cosmetically acceptable medium. The invention also relates to a cosmetic process for treating human body odour, in particular underarm odour and optionally human perspiration, which consists in applying to human keratin materials the said siliceous material or a composition containing the same in a cosmetically acceptable medium. The invention also relates to a composition characterized in that it comprises, in a cosmetically acceptable medium, at least the said siliceous material and at least one deodorant agent other than the said siliceous material and/or at least one antiperspirant active agent.

First claim

The invention claimed is:

1. A cosmetic process for treating human body odour and optionally human perspiration, which comprises applying to human keratin materials a siliceous material that may be obtained by hydrolysis and condensation, in the presence of water, of at least one tetraalkoxysilane of formula (I) below:
Si(OR 2 ) 4   (I)

and of an alkyltrialkoxysilane of formula (II) below:
R 1 Si(OR 2 ) 3   (II)

in which:
R 1 denotes a linear or branched C 7 to C 20 alkyl group, optionally interrupted in its chain with an O or S atom or with an NH group or a carbonyl group (CO),
R 2 denotes a linear or branched C 1 -C 4 alkyl group.

2. The cosmetic process according to claim 1 , in which the said siliceous material is present in a composition comprising a cosmetically acceptable medium.

3. The cosmetic process according to claim 1 , in which R 1 represents a C 8 to C 18 alkyl group.

4. The cosmetic process according to claim 1 , in which R 2 represents a linear alkyl group comprising from 1 to 4 carbon.

5. The cosmetic process according to claim 1 , in which compound (I) is chosen from tetraethoxysilane (TEOS) and tetramethoxysilane (TMOS).

6. The cosmetic process according to claim 1 , in which compound (II) is chosen from n-octyltrimethoxysilane, n-dodecyltrimethoxysilane, n-octadecyltrimethoxysilane, n-octyltriethoxysilane, n-dodecyltriethoxysilane and n-octadecyltriethoxysilane, and mixtures thereof.

7. The cosmetic process according to claim 6 , in which compound (II) is chosen from:
n-dodecyltriethoxysilane
n-octadecyltriethoxysilane
n-octyltriethoxysilane.

8. The cosmetic process according to claim 1 , in which the siliceous material may be obtained by hydrolysis and condensation, in the presence of water, of at least one tetraalkoxysilane of formula (I), of an alkyltrialkoxysilane of formula (II) and of at least one aminoalkyltrialkoxysilane of formula (III) below:
R 3 Si(OR 4 ) 3   (III)

in which:
R 3 denotes a linear or branched, saturated or unsaturated C 1 -C 6 hydrocarbon-based group or a cyclic C 3 -C 5 hydrocarbon-based group, or denotes a C 6 -C 9 aryl or C 6 -C 9 aryloxy group, the said radicals being substituted with an amino group NH 2 or NHR with R denoting a C 1 -C 4 alkyl group,
R 4 denotes a linear or branched C 1 -C 4 alkyl group.

9. The cosmetic process according to claim 8 , in which R 3 represents a C 2 -C 4 hydrocarbon-based group substituted with an amino group NH 2 or NHR with R denoting a linear or branched C 1 -C 4 alkyl group.

10. The cosmetic process according to claim 8 , in which R 4 represents an ethyl group.

11. The cosmetic process according to claim 8 , in which the compound of formula (III) is chosen from 3-aminopropyltriethoxysilane (APTES), 3-aminoethyltriethoxysilane (AETES), 3-aminopropylmethyldiethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane, 3-(m-aminophenoxy)propyltrimethoxysilane, p-aminophenyltrimethoxysilane and N-(2-aminoethylaminomethyl)phenethyltrimethoxysilane.

12. The cosmetic process according to claim 11 , in which compound (III) is 3-aminopropyltriethoxysilane (APTES).

13. The cosmetic process according to claim 1 , in which compounds (I) and (II) are used in a compound (I)/compound (II) weight ratio ranging from 0.9 to 100.

14. The cosmetic process according to claim 8 , in which compounds (I) and (III) are used in a compound (I)/compound (III) weight ratio ranging from 0.9 to 100.

15. The cosmetic process according to claim 1 , in which R 1 represents an alkyl group chosen from n-octyl, n-decyl, n-dodecyl, n-tetradecyl, n-hexadecyl and n-octadecyl.

16. The cosmetic process according to claim 2 , in which R 1 represents a C 8 to C 18 alkyl group.

17. The cosmetic process according to claim 1 , in which R 2 represents an ethyl group.

18. The cosmetic process according to claim 3 , in which R 2 represents a linear alkyl group comprising from 1 to 4 carbon atoms.

19. The cosmetic process according to claim 1 , which comprises applying said siliceous material to underarms.

Assignees

• Oreal

Inventors

• Greaves Andrew

Classifications

• A61Q15/00

  Anti-perspirants or body deodorants (deodorisation of air A61L9/00) · CPC title

• A61K8/585 Primary

  Organosilicon compounds · CPC title

• A61K2800/40

  Chemical, physico-chemical or functional or structural properties of particular ingredients · CPC title