Process for treating the hair with at least one silicone functionalized with at least one alkoxysilane unit, and steam
AssigneeL'oreal
InventorsMelissa CHAMPEAUX, Gregory PLOS, Gabin VIC, Frederic WOODLAND
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Abstract
The present invention relates to a process for treating the hair, which comprises: a) the application to the hair of a composition comprising one or more polymers containing a silicone unit bearing alkoxy-(aminomethyl)-silyl functional groups, b) the application to the hair of steam by means of a device that is capable of generating steam, step b) possibly preceding, following or being simultaneous with step a).
Claims25
Hair treatment process, which comprises:
- a) the application to the hair of a composition comprising one or more polymers containing a silicone unit bearing alkoxy-(aminomethyl)-silyl functional groups,
- b) the application to the hair of steam by means of a device that is capable of generating steam,
- step b) possibly preceding, following or being simultaneous with step a).
Process according to either of the preceding claims, characterized in that the amount of steam is, limits inclusive, between 0.5 and 60 g/min, preferably 1 and 20 g/min and more preferably 2 and 10 g/min.
Process according to any one of the preceding claims, characterized in that it also comprises a step of heating the hair at a temperature between, limits inclusive, 50° C. and 250° C., preferably between 90° C. and 250° C., more preferably between 120° C. and 230° C. and better still between 150° C. and 230° C., said heating step possibly preceding, following or being simultaneous with the steam application step b), preferably following the steam application step b).
Process according to the preceding claim, in which the application of steam and the heating of the hair are performed by a single device, preferably a device chosen from a steam-generating straightening iron, a steam-generating curling iron, a steam-generating crimping iron and a steam-generating waving iron, more preferably by a steam-generating straightening iron.
Process according to the preceding claim, in which the application of steam and the heating of the hair are performed by a single device in which the application of steam and the heating are dissociated.
Process according to any one of the preceding claims, in which the polymers containing a silicone unit bearing alkoxy-(aminomethyl)-silyl functional groups are of formula (I) below:
- in which:
- Z2 represents a group —CH2—NR3R4;
- Z3 represents a group OR5 or R6;
- R1 represents a C1-C6 alkyl group,
- R3 represents a hydrogen atom or a group R7;
- R4 represents a C1-C6 alkyl group or a C5-C6 cycloalkyl group;
- or
- R3 and R4 possibly forming, with the nitrogen atom that bears them, a 5- to 8-membered heterocycle comprising from 1 to 3 heteroatoms,
- R5, R6 and R7, which may be identical or different, represent a C1-C6 alkyl group, and
- Ra and Rb, which may be identical or different, represent a C1-C2 alkyl group, n represents an integer greater than 1.
Process according to the preceding claim, in which the C1-C6 alkyl groups are methyl or ethyl groups.
Process according to the preceding claim, in which R3 and R4 form, with the nitrogen that bears them, a cyclic group, preferably morpholino, and R5 represents an ethyl group.
Process according to any one of the preceding claims, in which the polymer(s) containing a silicone unit bearing alkoxy-(aminomethyl)-silyl functional groups, preferably of formula (I), represent from 0.1% to 100% by weight, preferably from 0.5% to 30% by weight and more particularly from 1% to 10% by weight relative to the total weight of the composition.
Process according to any one of the preceding claims, in which the composition comprises an organic solvent, the organic solvent preferably being chosen from alcohols, alkanes, esters and silicones, and mixtures thereof, preferably from ethanol, propanol, isopropanol, glycerol, undecane, tridecane, isododecane, isopropyl myristate, ethyl adipate, ethyl acetate, linear low-molecular-weight silicones or cyclic silicones such as cyclopentasiloxane, amino silicones and silicones bearing alkyl end groups, and also mixtures thereof, preferably from linear low-molecular-weight silicones, cyclic silicones, isododecane, undecane, tridecane and isopropanol, and mixtures thereof.
Process according to the preceding claim, characterized in that the solvent(s) represent from 1% to 99.9%, preferably from 70% to 99.5% by weight and better still from 70% to 99% by weight, relative to the total weight of the composition.
Process according to any one of the preceding claims, characterized in that the composition comprises less than 5% water, preferably less than 3% water, and is preferably anhydrous.
Process according to any one of the preceding claims, characterized in that the composition further comprises a silicone compound different from the polymers containing a silicone unit bearing alkoxy-(aminomethyl)-silyl functional groups.
Process according to the preceding claim, characterized in that the composition further comprises preferably a silicone compound comprising at least one alkyl unit, preferably a silicone compound chosen from amodimethicone, bis-cetearyl amodimethicone, dimethiconol, dimethicone, vinyl dimethicone, caprylyl methicone, diphenylsiloxyphenyltrimethicone, and more preferentially bis-cetearyl amodimethicone.
Process according to any one of the preceding claims, characterised in that it comprises a step of applying to the hair a pre-treatment composition comprises one or more organosilanes before step a) of applying to the hair a composition comprising one or more polymers containing a silicone unit bearing alkoxy-(aminomethyl)-silyl functional groups.
Process according to the preceding claim, characterized in that the organosilanes are chosen from the compounds of formula (I) and/or oligomers thereof:
- R′1Si(OR′2)z(R′3)x(OH)y (I)
- in which:
- R′1 is a cyclic or acyclic, linear or branched, saturated or unsaturated C1-C22, in particular C2-C20, hydrocarbon-based chain, which may be substituted with a group chosen from amine groups NH2 or NHR (R being a linear or branched C1-C20, in particular C1-C6, alkyl, a C3-C40 cycloalkyl or a C6-C30 aromatic radical);
- the hydroxyl group (OH), a thiol group, an aryl group (more particularly benzyl), which is possibly substituted with an NH2 or NHR group;
- it being possible for R′1 to be interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO),
- R′2 and R′3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms,
- y denotes an integer ranging from 0 to 3,
- z denotes an integer ranging from 0 to 3, and
- x denotes an integer ranging from 0 to 2, with x+y+z=3, preferably, chosen from octyltriethoxysilane (OTES), dodecyltriethoxysilane, octadecyltriethoxysilane, hexadecyltriethoxysilane, 3-aminopropyltriethoxysilane (APTES), 2-aminoethyltriethoxysilane (AETES), 3-aminopropylmethyldiethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane, 3-(m-aminophenoxy)propyltrimethoxysilane, p-aminophenyltrimethoxysilane, N-(2-aminoethylaminomethyl)phenethyltrimethoxysilane, and oligomers thereof;
- and more particularly chosen from octyltriethoxysilane (OTES) and 3-aminopropyltriethoxysilane (APTES), and oligomers thereof.
Process according to any one of the preceding claims, characterized in that it uses one or more catalysts, the catalyst(s) preferably being chosen from organic or mineral basic compounds, especially ammonia or sodium hydroxide, organic or mineral acids, especially hydrochloric acid, oleic acid or lactic acid, and mixtures thereof.
Dependencies are inferred from the claim text.