Self Emulsified Compositions

Abstract

Provided are cosmetic compositions of incompatible cosmetic composition provided long term stability by the interfacial reaction of two immiscible polymers having complementary reactive pair functional groups.

1 . An emulsion composition comprising a continuous phase, a dispersed phase, and a compatibilizer that is the reaction product of a first functional polymer dispersible in the continuous phase and a second functional polymer dispersible in the dispersed phase, the compatibilizer having at least one complementary reactive group pairing and being formed interfacially between the continuous phase and dispersed phases upon admixing of the first and second phases each containing their respective dispersible functional polymers to effect compatibilizer formation by in-situ reaction of said polymers, and at least one of the continuous and dispersed phases containing a cosmetic active agent. 
     
     
         2 . The composition of  claim 1 , wherein the at least one complementary reactive group pairing is selected from the group consisting of carboxylic acid/amine, carboxylic acid/oxazoline, carboxylic acid/epoxy, amine/epoxy, amine/cyclic anhydride, amine/isocyanate, hydroxyl/cyclic anhydride, or hydroxyl/carboxylic acid. 
     
     
         3 . The composition of  claim 2 , wherein one of said functional polymers comprises at least one reactive functional group selected from a first group consisting of an amine, a carboxylic acid, or a hydroxyl group, and the other of said functional polymers comprises at least one reactive functional group selected from the group consisting of an amine, a carboxylic acid, a cyclic anhydride, an epoxy, an isocyante an oxazoline, or a silicone hydride group to form said at least one complementary reactive group pairing. 
     
     
         4 . The composition of  claim 3 , wherein the functional polymers are natural or synthetic polymers. 
     
     
         5 . The composition of  claim 4 , wherein the natural polymers are selected from the group consisting of pullan, carrageen, glycon, cellulose, hydroxycellulose, amylose, chitosan, N,O-carboxymethylchitosan, algin and alginic acid, agar, pectin, starch, dextran, dextrin, cyclodextrin, konjac, glucomannan, chitin, pustulan, heparin, cardlan, hyaluronic acid, xantham, and combinations and derivatives thereof. 
     
     
         6 . The composition of  claim 4 , wherein the synthetic polymers are selected from the group consisting of a polyolefin, a polyether, a polyester, a polysiloxane, a polyamide, a polyacrylate, a polyurethane, a polyphosphazene, a polyvinylpyrolidone, or combinations thereof. 
     
     
         7 . The composition of  claim 3 , wherein the amine reactive group further includes aliphatic amines, aromatic amines, amino acids or peptides. 
     
     
         8 . The composition of  claim 7 , wherein the amine is an amino acid or peptide. 
     
     
         9 . The composition of  claim 3 , wherein the first functional polymer and/or the second functional polymer has two or more functional groups thereon, each of the functional groups being identical in respect of each polymer. 
     
     
         10 . The composition of  claim 3 , wherein one of said first or second polymers has two or more different functional groups thereon, each of said different functional groups being adapted to form different complementary reactive group pairings with the functional group on the other of the polymers. 
     
     
         11 . The composition of  claim 3 , wherein both of said first and second polymers have two or more different functional groups thereon, each of said different functional groups on the first polymer forming two or more different complementary reactive group pairings with the functional groups on the other of the polymers. 
     
     
         12 . The composition of  claim 1 , wherein the one or both functional polymers have a backbone chain and at least one reactive functional group is pendant to or end-capped on the backbone chain. 
     
     
         13 . The composition of  claim 12 , wherein the reactive functional group is pendant to the backbone. 
     
     
         14 . The composition of  claim 1 , wherein one or both functional polymers have a backbone chain and at least one reactive functional group is within the backbone chain. 
     
     
         15 . The composition of  claim 3 , wherein the complementary reactive group pairing is amine/cyclic anhydride. 
     
     
         16 . The composition of  claim 10 , wherein at least one complementary reactive group pairing is amine/cyclic anhydride. 
     
     
         17 . The composition of  claim 11 , wherein at least one complementary reactive group pairing is amine/cyclic anhydride. 
     
     
         18 . A method for producing an emulsion composition having long term stability comprising:
 (i) providing a first functional polymer having at least one reactive functional group that is one member of a complementary reactive group pair in a continuous phase;   (ii) providing a second functional polymer having at least one reactive functional group that is a different member of the complementary reactive group pair in a dispersed phase; and   (iii) admixing the continuous phase and dispersed phase to react the functional polymers at an interface between the continuous phase and dispersed phase to form a compatibilizer comprising the complementary reactive group pairing.   
     
     
         19 . A method for applying a cosmetic composition comprising:
 (i) applying the first composition of the kit of claim  29  to a human integument as a base coat;   (ii) applying a top coat of the second composition on top of said base coat; and   (iii) allowing a reaction between the functional polymers to take place at the interface between the base coat and the top coat to form a compatibilizer comprising the complementary reactive pair at said interface.