Method for treating human hair with agents containing mixtures of organic C
A method may be used for treating keratin material, such as human hair, where a cosmetic agent is applied to the keratin material. After an exposure time, the cosmetic agent is rinsed off. The cosmetic agent may include a mixture of organic C 1 -C 6 alkoxy siloxanes, said mixture being obtained by specifically hydrolyzing and precondensing one or more organic C 1 -C 6 alkoxy siloxanes by adding water and catalyst, and where the hydrolysis and precondensation is carried out in the absence of a solvent different from water.
1 . A method for treating keratin material, the method comprising:
applying a cosmetic agent to the keratin material;
rinsing the cosmetic agent from the keratin material after an exposure time; and
applying a post-treatment agent to the keratin material after rinsing the cosmetic agent from the keratin material;
wherein the cosmetic agent comprises a mixture of organic C 1 -C 6 alkoxy siloxanes and a cosmetic carrier, and
wherein the mixture of organic C 1 -C 6 alkoxy siloxanes is obtained by specifically hydrolyzing and precondensing one or more organic C 1 -C 6 alkoxy silanes by adding (i) from 0.10 to 0.80 molar equivalents of water and (ii) catalyst, and the hydrolysis and precondensation is carried out in the absence of any solvent different from water.
2 . The method according to of claim 1 , wherein the one or more organic C 1 -C 6 alkoxy silanes are represented by formula (I), (II), and/or (IV):
R 1 R 2 N-L-Si(OR 3 ) a (R 4 ) b (I)
where
R 1 , R 2 represent, independently of one another, a hydrogen atom or a C 1 -C 6 alkyl group,
L represents a linear or branched, divalent C 1 -C 20 alkylene group,
R 3 , R 4 represent, independently of one another, a C 1 -C 6 alkyl group,
a represents an integer from 1 to 3, and
b represents the integer 3−a,
(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′ (II),
where
R5, R5′, R5″, R6, R6′ and R6″ represent, independently of one another, a C 1 -C 6 alkyl group,
A, A′, A″, A″ and A″ represent, independently of one another, a linear or branched, divalent C 1 -C 20 alkylene group, and
R 7 and R 8 represent, independently of one another, 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 (III),
(A″″)-Si(R 6 ″) d ″(OR 5 ″) c ″ (III),
where
c represents an integer from 1 to 3,
d represents the integer 3−c,
c′ represents an integer from 1 to 3,
d′ represents the integer 3−c′,
c″ represents an integer from 1 to 3,
d″ represents the integer 3−c′,
e represents 0 or 1,
f represents 0 or 1,
g represents 0 or 1, and
h represents 0 or 1,
wherein the at least one of the functional groups from e, f, g and h is different from 0, and
(R 9 ) m Si(OR 10 ) k (IV),
where
R 9 represents a C 1 -C 12 alkyl group or a C 2 -C 12 alkenyl group,
R 10 represents a C 1 -C 6 alkyl group,
k represents an integer from 1 to 4, and
m represents the number 4−k.
3 . The method of claim 1 , wherein the one or more organic C 1 -C 6 alkoxy silanes are selected from the group consisting of:
methyltrimethoxysilane,
methyltriethoxysilane,
ethyltrimethoxysilane,
ethyltriethoxysilane,
hexyltrimethoxysilane,
hexyltriethoxysilane,
octyltrimethoxysilane,
octyltriethoxysilane,
dodecyltrimethoxysilane,
dodecyltriethoxysilane,
vinyltrimethoxysilane,
vinyltriethoxysilane,
tetramethoxysilane,
tetraethoxysilane,
(3-aminopropyl) triethoxysilane,
(3-aminopropyl) trimethoxysilane,
(2-aminoethyl)triethoxysilane,
(2-aminoethyl)trimethoxysilane,
(3-dimethylaminopropyl) triethoxysilane,
(3-dimethylaminopropyl) trimethoxysilane,
(2-dimethylaminoethyl)triethoxysilane, and
(2-dimethylaminoethyl)trimethoxysilane.
4 . The method of claim 3 , wherein the mixture is obtained using the one or more organic C 1 -C 6 alkoxy silanes of formula (I) and the one or more organic C 1 -C 6 alkoxy silanes of formula (IV) in a weight ratio of (I)/(IV) ranging from 1:1 to 1:10.
5 . The method of claim 1 , wherein the one or more organic C 1 -C 6 alkoxy silanes are heated to a temperature ranging from 30 to 80° C. before the water and the catalyst are added.
6 . The method of claim 1 , wherein the molar equivalents of water (S−W) is calculated according to the formula:
S
-
W
=
mol
(
water
)
mol
(
silanes
)
×
n
(
alkoxy
)
where
S−W represents the molar equivalent of water,
mol(water) represents a molar amount of water used,
mol(silanes) represents the total molar amount of the one or more C 1 -C 6 alkoxy silanes used, in the reaction, and
n(alkoxy) represents a number of C 1 -C 6 alkoxy groups per C 1 -C 6 alkoxy silane.
7 . The method of claim 1 , wherein the catalyst is selected from the group of inorganic acids and organic acids.
8 . The method of claim 1 , wherein the catalyst is selected from the group of inorganic bases and organic bases.
9 . The method of claim 3 , wherein the mixture is obtained by:
(1) heating the one or more organic C 1 -C 6 alkoxy silanes of formula (IV) to a temperature ranging from 30 to 80° C., and mixing with the water and the catalyst;
(2) stirring the mixture obtained in step (1) for a period ranging from 1 minute to 3 hours;
(3) mixing the mixture obtained in step (2) with the one or more organic C 1 -C 6 alkoxy silanes of formula (I);
(4) mixing the mixture obtained in step (3) with additional water and catalyst; and
(5) stirring the mixture obtained in step (4) for a period ranging from 30 minutes to 24 hours.
10 . The method of claim 3 , wherein the mixture is obtained by:
(1) mixing the one or more organic C 1 -C 6 alkoxy silanes of formula (I) and the one or more organic C 1 -C 6 alkoxy silanes of formula (IV);
(2) heating the mixture obtained in step (1) to a temperature ranging from 30 to 80° C., and mixing with the water and the catalyst; and
(3) stirring the mixture obtained in step (2) for a period ranging from 1 minute to 24 hours.
11 . The method of claim 1 , wherein the keratin material is human hair, and wherein the cosmetic agent additionally comprises at least one pigment or a direct dye.
12 . The method of claim 1 , wherein the keratin material is human hair, and wherein the post-treatment agent comprises at least one pigment or a direct dye.
13 . The method of claim 2 , wherein a represents the number 3 and b represents the number 0.
14 . The method of claim 2 , wherein:
R 5 and R 5 ′ represent, independently of each other, a methyl group or an ethyl group,
c and c′ both represent the number 3, and
d and d′ represent the number 0.
15 . The method of claim 1 , wherein the cosmetic agent is selected from the group consisting of:
(3-aminopropyl) triethoxysilane,
(3-aminopropyl) trimethoxysilane,
(2-aminopropyl) triethoxysilane,
(2-aminopropyl) trimethoxysilane,
(3-dimethylaminopropyl) triethoxysilane,
(3-dimethylaminopropyl) trimethoxysilane,
(2-dimethylaminoethyl)triethoxysilane,
(2-dimethylaminoethyl)trimethoxysilane, and
any combination thereof.
16 . The method of claim 3 , wherein the mixture is obtained by:
(1) heating the one or more organic C 1 -C 6 alkoxy silanes of formula (IV) to a temperature ranging from 30 to 80° C., and mixing with the water and the catalyst;
(2) stirring the mixture obtained in step (1) for a period ranging from 1 minute to 3 hours;
(3) mixing the mixture obtained in step (2) with the one or more organic C 1 -C 6 alkoxy silanes of formula (I); and
(4) stirring the mixture obtained in step (3) for a period ranging from 30 minutes to 24 hours.
17 . The method of claim 1 , wherein the cosmetic carrier is an aqueous solution.
18 . The method of claim 17 , wherein the cosmetic carrier further comprises one or more ingredients selected from the group consisting of thickening or film-forming polymers, nonionic surfactants, cationic surfactants, anionic surfactants, amphoteric surfactants, coloring pigments, coloring direct dyes, oxidation dye precursors, C 8 -C 30 fatty alcohols, hydrocarbon compounds, fatty acid esters, pH regulators, perfumes, preservatives, plant extracts, and protein hydrolyzates.