Methods for preparation of keratin fiber color coatings with an organic polymer - alkoxysilyl composition

Abstract

The methods and compositions of the present invention are directed to coloration of anagenic hair. The methods involve priming and deep cleaning the anagenic hair followed by coating the hair strands with a composite pigment containing film of a small molecule and a film forming composition which covalently interact to form an intimate three dimensional silicone network incorporating the pigment on the surfaces of the hair.

What is claimed is: 
     
         1 . A method for producing a color coating on the surfaces of keratin fibers comprising
 Preparing the keratin fibers to form primed and/or deep cleaned keratin fibers;   applying to the primed and/or deep cleaned keratin fibers a pretreatment composition to form pre-coated keratin fibers; and   applying to the pre-coated keratin fibers a film forming composition to form a composite film of film forming composition and pretreatment composition on the keratin fibers; and,   converting the composite film to a color coating on the keratin fibers;   
       wherein
 the pretreatment composition comprises a compatible medium and at least one organosilicone small molecule comprising at least one alkoxysilyl group, and an optional organoamine group; 
 the film forming composition comprises a compatible medium with one or more microparticle pigments and/or color bodies and at least one in situ self covalently reactive cross linkable organic polymeric binder having two or more alkoxysilyl pendant and/or terminal groups and the binder being linear or branched, preferably linear; and, 
 the primed and/or deep cleaned keratin fibers are prepared by removal of sebum and associated substances on the keratin fiber surfaces. 
 
     
     
         2 . A method according to  claim 1  wherein the film forming composition further comprises a catalyst. 
     
     
         3 . A method according to  claim 1  wherein the composite film of pretreatment and film forming composition is (are) converted by drying and curing to form the color coating on the keratin fibers. 
     
     
         4 . A method according to  claim 1  wherein the organic binder comprises at least a polymer of Formula IA
   X 3 Si—R 1 -Ct-[Poly] y -Ct-R 1 —Si—X 3    Formula IA
 
 wherein 
 X is alkoxy of 1 to 3 carbons; 
 R 1  is a linear or branched C1 to C8 alkylenyl group; 
 Ct is a connector group of the Formula II —U 1 —R 2 —U 2 — joining X 3 Si—R 1 — to Poly, wherein: 
 U 1  is covalently bonded to R 1  and U 2  is covalently bonded to Poly; 
 Each of U 1  and U 2  independently is a urea or urethane group; 
 R 2  is a C2 to C12 alkylenyl group, a C6-C16 alkylcycloalkyl group or a C6-C14 aromatic or alkylaromatic group;
 Poly is a polymer of monomeric units of an organic ester, urethane, urea, amide or polyol or any combination thereof and y designates the number of monomeric units of Poly forming a linear or branched polymeric backbone wherein y is an integer of from 2 up to about 1 million, preferably up to about 300,000, more preferably up to about 250,000, most preferably up to about 200,000; wherein 
 The organic ester monomeric unit is formed of a C2-C20 alkane diol or a C6-C10 aromatic diol and a C3 to C10 alkanodioic acid or a C8-C10 aromatic dicarboxylic acid or the unit is formed of a C3-C10 hydroxy alkanoic acid or a C8-C10 aromatic hydroxycarboxylic acid; 
 The organic urethane monomeric unit is formed of a C2-C10 alkanodiol and an R 3 -diisocyanate; 
 The organic urea monomeric unit is formed of a C2-C10 alkanodiamine and an R 3 -diisocyanate; 
 The organic amide monomeric unit is formed of a C2-C10 alkanodiamine and a C3 to C10 alkanodioic acid or a C8-C10 aromatic dicarboxylic acid; 
 The polyol monomeric unit is a formed of ethylene oxide or propylene oxide; 
 R 3  is a C2 to C12 alkylenyl group, a C6-C16 alkylcycloalkyl group or a C6-C14 aromatic or alkylaromatic group; 
 
 Provided that:
 When Poly is an ester monomeric unit, U 2  is a urethane group and U 1  is a urea group; 
 When Poly is a urethane monomeric unit, U 2  is a urethane group and U 1  is a urea group; 
 When Poly is a urea monomeric unit, U 2  is a urea group and U 1  is a urea group; 
 When Poly is an amide monomeric unit, U 2  and U 1  are both urea groups; 
 When Poly is a polyol monomeric unit, U 2  is a urethane group and U 1  is a urea group or, 
 Alternatively, U 1  may be a urethane group for each of the Polyester, Polyurethane, Polyurea, Polyamide and Poly-polyol provisos. 
 
 
     
     
         5 . A method according to  claim 1  wherein the binder comprises only two alkoxysilyl groups at each of the binder termini or the binder comprises at least three alkoxysilyl groups with two at the binder termini and at least a third pendant along the binder backbone and wherein the binder comprising at least three alkoxysilyl groups comprises at least one of:
 a Poly ester having at least one ester monomeric unit formed of a C3-C10 triol; 
 a Poly urethane having at least one urethane monomeric unit formed of a C3-C10 triol; 
 a Poly urea having at least one urea monomeric unit formed of a C3-C10 triamine; 
 a Poly amide having at least one amide monomeric unit formed of a C3-C10 triamine; or, 
 a Poly polyol having at least one polyol monomeric unit formed of a triol which is glycerin; 
 wherein the third hydroxyl of the triol and the third amine group of the triamine is covalently bound to Ct of a pendant alkoxysilyl group of the formula X 3 Si—R 1 -Ct-; and 
 the film forming composition comprises the binder with only two alkoxysilyl groups, or the binder with at least three alkoxysilyl groups or a mixture of both binders. 
 
     
     
         6 . A method according to  claim 1  wherein the binder is characterized by Formula V
   (RO) 3 Si—(CH 2 ) c —NHCONH—R 10 —NHCOO—[—(CH 2 ) e —O—CO—R 20 —COO-] g —(CH 2 ) e —OCONH—R 10 —NHCONH—(CH 2 ) c Si(OR) 3    Formula V
 
 wherein c is an integer of 3 to 6, e is an integers of 2 to 8 and preferably e is 2, 4 or 6; R 20  is divalent benzenenyl or (CH 2 ) f  wherein f is an integer of 4 to 8 and preferably R 20  is a terephthalic acid, succinic acid or adipic acid residue, g is an integer of 10 to 300,000, R 10  is a C4 to C8 alkylenyl group, preferably providing hexylenyl and R is methyl or ethyl. 
 
     
     
         7 . A method according to  claim 1  wherein the pretreatment composition comprises a small molecule with at least two alkoxysilyl groups and at least one organoamine group. 
     
     
         8 . A method according to  claim 1  wherein the small molecule of the pretreatment composition comprises Formula III
   [(H 2 N)—((CH 2 ) m —NH) o —(R 14 ) n )] a —[RO t Me 3-t -Si—O] b —(—SiMe 2 -O) p —(—SiMeOR—O) q —[(—SiMe 2-r′ [(CH 2 ) m′ —NH 2 ] r —O] s -[A] c -[(—SiMeMe 2-v -O] u —SiMe 3-t OR t    Formula III
 
 
       wherein
 R may be methyl or ethyl;
 R 14  is a C1-C6 alkylenyl group; 
 
 Designators m and m′ may be an integer of 1 to 3; 
 Designators o, n, b, r, s, c, u may be zero or 1; 
 Designator a may be zero, 1 or 2; 
 Designator v may be zero, 1 or 2 such that when a is 2, v is 2 and when a is 1, v is 1 and when a is zero, v is 1 or zero. 
 Designator t may be 1 to 3; 
 Designators p and q independently may be zero or an integer of 1 to 6. 
 Designator t may be zero or an integer 1-3; 
 Group A may be a divalent group including dithio, diazo, urethanyl, ureido, or C1-C6 alkylenyl connecting left and right sections of the small molecule, or Group A may be a terminal group including C1-C14 alkyl, C1X-C14X alkyl wherein X is N, S or O and X may be in-chain or terminal, C1-C6 alkoxy, C7-C14 arylalkyl, C6X-C14X heteroarylalkyl with X as N, S or O; C1-C6 alkylenyl(meth)acrylate or C1-C6 alkylureido. 
 
     
     
         9 . A method according to  claim 8  wherein the small molecule is APTES, SCA, PTEO, MEMO, TEOS, silamine or any combination thereof. 
     
     
         10 . A method according to  claim 1  wherein the pretreatment composition is applied to keratin fibers before applying the film forming composition or is applied simultaneously with application of the film forming composition to form a composite film on the keratin fibers and the composite film on keratin fibers is converted to a color coating by drying and curing. 
     
     
         11 . A method according to  claim 1  further comprising priming and/or deep cleaning the keratin fibers by applying a Praeparatur and/or a Fundamenta technique to the fibers, wherein the Praeparatur and/or Fundamenta techniques comprise a Praeparatur step of treating the keratin fibers with a non-conditioning or substantially non-conditioning surfactant composition to produce primed keratin fibers; and a Fundamenta step of deep cleaning the surfaces of the keratin fibers to form deep cleaned keratin fibers. 
     
     
         12 . A method according to  claim 1  wherein the surfactant composition includes an anionic, nonionic, amphoteric or zwitterionic surfactant or a combination thereof at a concentration of from about 2 wt % to about 30 wt % preferably from about 10 wt % to about 25 wt % relative to the total weight of the composition and optional inclusion of agents for adjustment of viscosity and ionicity and optional adjustment of the pH. 
     
     
         13 . A method according to  claim 1  wherein the Fundamenta technique treats the keratin fiber surfaces by deep cleaning the surface topography and make-up of the surfaces of the keratin fibers, wherein the deep cleaning is accomplished by application of at least one of a cold plasma, a phase transfer tenside, an oxidizing agent or a combination thereof to the surfaces of the keratin fibers whereby the deep cleaning at least partially removes f layer fatty acid, sebum and optionally adjusts the topography at the surfaces of the keratin fibers. 
     
     
         14 . A method according to  claim 1  wherein the pretreatment composition, the binder in compatible medium and catalyst in compatible medium are all maintained in separate containers until before use. 
     
     
         15 . A method according to  claim 1  wherein the keratin fibers are anagenic hair of a person and the polymer moiety of the binder is linear or branched, preferably linear.