Composition comprising an alkoxysilane and a modified starch, and cosmetic use thereof

Abstract

The invention relates to a composition, especially a cosmetic composition, comprising (i) one or more alkoxysilanes, and (ii) one or more starches modified with an acid or an acid derivative. The invention also relates to a cosmetic process for treating keratin materials with this composition, and also to the use of this composition for caring for and/or shaping keratin materials.

1 .- 15 . (canceled) 
     
     
         16 . A cosmetic composition comprising:
 (i) at least one alkoxysilane, and   (ii) at least one starch modified with an acid or an acid derivative.   
     
     
         17 . The cosmetic composition according to  claim 16 , wherein the at least one alkoxysilane is chosen from the following compounds:
 compounds of formula (I):   
       
         
           
           
               
               
           
         
         wherein: 
         R 4  represents a halogen or a group OR a  or R 1a ; 
         R 5  represents a halogen or a group OR b  or R 2a ; 
         R 6  represents a halogen or a group OR c  or R 3a ; 
         R 1  and R 2  represent, independently of each other, a hydrogen atom or a saturated or unsaturated, linear or branched hydrocarbon-based group, 
         R 3 , R a , R b , R c , R 1a , R 2a  and R 3a  represent, independently of each other, a saturated or unsaturated, linear or branched hydrocarbon-based group, optionally bearing additional chemical groups chosen from acid or amine groups, 
         wherein R a , R b  and R c  may also be chosen from hydrogen, 
         and further wherein at least two of the groups R 4 , R 5  and R 6  are different from the groups R 1a , R 2a  and R 3a . 
         compounds of formula (II):
   (R 21 O) x (R 22 ) y Si—(B) p -[NR 23 —(B a ) pa]q -[NR 23a —(B b ) pb]qa -Si(R 22a ) ya (OR 21a ) xa  
 
 
         wherein: 
         R 21 , R 22 , R 21a  and R 22a  represent, independently of each other, a saturated or unsaturated, linear or branched hydrocarbon-based chain, optionally containing at least one heteroatom, optionally interrupted or substituted with at least one group chosen from ether, ester, amine, amide, carboxyl, hydroxyl and carbonyl groups, 
         R 23  and R 23a  each independently represent a hydrogen atom or a saturated or unsaturated, linear or branched hydrocarbon-based chain, optionally containing at least one heteroatom, optionally interrupted or substituted with at least one ether, C 1 -C 20  alcohol ester, amine, carboxyl, C 6 -C 30  aryl, hydroxyl or carbonyl group, or a heterocyclic or non-heterocyclic aromatic ring, optionally substituted with at least one C 1 -C 20  alcohol ester, amine, amide, carboxyl, hydroxyl, carbonyl or acyl group, 
         x is an integer ranging from 1 to 3, y=3-x, xa is an integer ranging from 1 to 3, ya=3-xa, p=0 or 1, pa=0 or 1, pb=0 or 1, q=0 or 1, qa=0 or 1, wherein at least one of q or qa is not zero, 
         B, B a  and B b  each independently represent a linear or branched divalent C 1 -C 20  alkylene radical; 
         compounds of formula (III): 
       
       
         
           
           
               
               
           
         
         wherein: 
         R 24  and R 25  represent, independently of each other, a saturated or unsaturated, linear or branched hydrocarbon-based chain, optionally containing at least one heteroatom, optionally interrupted or substituted with at least one group chosen from ether, ester, amine, amide, carboxyl, hydroxyl and carbonyl groups, 
         e=2 or 3; 
         f=3-e; 
         g=0 or 1; 
         j=0 or 1; 
         E and E a  each independently represent a linear or branched divalent C 1 -C 20  alkylene radical, 
         R 26  and R 27  each independently represent a hydrogen atom or a saturated or unsaturated, linear or branched hydrocarbon-based chain, optionally containing at least one heteroatom, optionally interrupted or substituted with at least one ether, C 1 -C 20  alcohol ester, amine, carboxyl, C 6 -C 30  aryl, hydroxyl or carbonyl group, or a heterocyclic or non-heterocyclic aromatic ring, optionally substituted with at least one C 1 -C 20  alcohol ester, amine, amide, carboxyl, hydroxyl, carbonyl or acyl group, R 26  and R 27  preferably representing a hydrogen atom, 
         i is an integer ranging from 0 to 4, 
         h is 0 or 1, 
         the i groups R 28  each independently represent a hydrogen atom or a saturated or unsaturated, linear or branched, C 1 -C 10  hydrocarbon-based chain, optionally containing at least one heteroatom, optionally interrupted or substituted with at least one ether, C 1 -C 20  alcohol ester, amine, carboxyl, C 6 -C 30  aryl, hydroxyl or carbonyl group, or a heterocyclic or non-heterocyclic aromatic ring, optionally substituted with at least one C 1 -C 20  alcohol ester, amine, amide, carboxyl, hydroxyl, carbonyl or acyl group. 
       
     
     
         18 . The cosmetic composition according to  claim 17 , wherein the alkoxysilane is represented by:
 compounds of formula (I), wherein at least one of R 1  and R 2  represents a hydrogen atom; or   compounds of formula (II), wherein at least one of R 23  and R 23a  represents a hydrogen atom.   
     
     
         19 . The cosmetic composition according to  claim 16 , wherein the alkoxysilane is represented by formula (I) below: 
       
         
           
           
               
               
           
         
         wherein: 
         R 1  and R 2 , independently of each other, are chosen from hydrogen and ethyl, propyl and aminoethyl groups; 
         R 3  is chosen from ethyl, propyl and methylphenethyl groups; 
         R 4 , R 5  and R 6 , independently of each other, are chosen from methyl, methoxy and ethoxy groups. 
       
     
     
         20 . The cosmetic composition according to  claim 16 , wherein the alkoxysilane is chosen from alkoxysilanes comprising at least one amine function. 
     
     
         21 . The cosmetic composition according to  claim 20 , wherein the at least one amine function is primary or secondary. 
     
     
         22 . The cosmetic composition according to  claim 16 , wherein the alkoxysilane is chosen from 3-aminopropyltriethoxysilane, 3-aminopropylmethyldiethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane and 3-(2-aminoethylamino)propyl-methyldiethoxysilane. 
     
     
         23 . The cosmetic composition according to  claim 16 , wherein the alkoxysilane is 3-aminopropyltriethoxysilane. 
     
     
         24 . The cosmetic composition according to  claim 16 , wherein the alkoxysilane is present in the composition in an amount ranging from about 0.05% to about 20% by weight relative to the total weight of the cosmetic composition. 
     
     
         25 . The cosmetic composition according to  claim 16 , wherein the alkoxysilane is present in the composition in an amount ranging from about 0.2% to about 5% by weight relative to the total weight of the cosmetic composition. 
     
     
         26 . The cosmetic composition according to  claim 16 , wherein the starch is chosen from corn, rice, cassava, barley, potato, wheat, sorghum and pea starches. 
     
     
         27 . The cosmetic composition according to  claim 16 , wherein the acid or the acid derivative is chosen from mineral or organic acids, salts thereof, organic acid chlorides, organic acid anhydrides, organic acid esters and mineral oxychlorides. 
     
     
         28 . The cosmetic composition according to  claim 16 , wherein the starch modified with an acid derivative is chosen from starch phosphates and starch acetates. 
     
     
         29 . The cosmetic composition according to  claim 16 , wherein the starch modified with an acid derivative represents from about 0.01% to about 10% by weight relative to the total weight of the cosmetic composition. 
     
     
         30 . The cosmetic composition according to  claim 16 , wherein the starch modified with an acid derivative represents from about 0.5% to about 5% by weight relative to the total weight of the cosmetic composition. 
     
     
         31 . A process for the nontherapeutic cosmetic treatment of keratin fibers, comprising:
 applying to said keratin fibers a composition comprising:
 (i) at least one alkoxysilane, and 
 (ii) at least one starch modified with an acid or an acid derivative. 
   
     
     
         32 . The process according to  claim 31 , further comprising:
 leaving the composition on said keratin fibers after applying the composition to said keratin fibers.   
     
     
         33 . The process according to  claim 31 , further comprising:
 rinsing the composition from said keratin fibers after applying the composition to said keratin fibers.   
     
     
         34 . The process according to  claim 31 , wherein the applying of the composition takes place in the presence of heating between about 40° C. and about 220° C. 
     
     
         35 . A process for caring for and/or shaping keratin fibers chosen from human hair, comprising:
 applying to said keratin fibers a composition comprising:
 (i) at least one alkoxysilane, and 
 (ii) at least one starch modified with an acid or an acid derivative.