Process for producing a hydrophobically modified polymer for use with personal care compositions
A the process of producing a hydrophobically modified polymer that can be used as a cosmetically acceptable composition prepared by incorporating hydrophobic moieties into a polymer composed acrylamide, one or more cationic monomers and optionally one or more anionic monomers. The composition may be incorporated into products for treating hair, skin and nails and also into household products such as household cleaners and laundry detergents.
1. A process for producing a cosmetically acceptable composition comprising preparing a mixture of an aqueous solution of a copolymer, an aqueous hydroxide solution, a sulfite solution, deionized water and a hydrophobic amine; stirring the mixture thoroughly, placing the mixture into a heating vessel and stirring consistently, pressurizing and venting the heating vessel, heating the heating vessel, cooling the heating vessel to ambient temperature, and collecting an aqueous solution of hydrophobically modified copolymer.
2. The process of claim 1 wherein the copolymer is a polyacrylamide.
3. The process of claim 1 wherein the sulfite solution is sodium metabisulfite.
4. The process of claim 1 wherein the pH during the process is about 5-11.
5. The process of claim 1 wherein the composition is heated to about 120-180° C.
6. The process of claim 1 wherein the composition is heated for 0.5 to 8.0 hours.
7. The process of claim 1 wherein the hydrophobically modified polymer is then diluted.
8. The process of claim 1 wherein the composition is treated with one or more preservatives.
9. The process of claim 2 wherein the polyacrylamide is cationic and composed of at least about 30 mole percent acrylamide.
10. The process of claim 1 wherein the copolymers contain monomers selected from diallyldimethylammonium chloride and methacrylamidopropyltrimethylammonium chloride.
11. The process of claim 9 wherein the cationic polyacrylamide is acrylamide/diallyldimethylammonium chloride copolymer.
12. The process of claim 9 wherein the cationic polyacrylamide is acrylamide/diallyldimethylammonium chloride/acrylic acid terpolymer.
13. The process of claim 1 wherein the hydrophobically modified polymer is combined with one or more cosmetically acceptable excipients.
14. The process of claim 13 wherein the cosmetically acceptable excipients are selected from the group consisting of saccharides, surface active agents, humectants, petrolatum, mineral oil, fatty alcohols, fatty ester emollients, waxes and silicone-containing waxes, silicone oil, silicone fluid, silicone surfactants, volatile hydrocarbon oils, quaternary nitrogen compounds, amine functionalized silicones, conditioning polymers, rheology modifiers, antioxidants, sunscreen active agents, di-long chain amines from about C 10 to C 22 , long chain fatty amines from about C 10 to C 22 , fatty alcohols, ethoxylated fatty alcohols and di-tail phospholipids.
15. The process of claim 13 wherein the cosmetically acceptable excipients are selected from the group consisting of shampoos, aftershaves, sunscreens, lotions, hand and body creams, liquid soaps, bar soaps, bath oil bars, shaving creams, dishwashing liquids, conditioners, permanent waves, hair relaxers, hair bleaches, hair detangling lotion, styling gel, styling glazes, spray foams, styling creams, styling waxes, styling lotions, mousses, spray gels, pomades, shower gels, bubble baths, hair coloring preparations, temporary and permanent hair colors, color conditioners, hair lighteners, coloring and non-coloring hair rinses, hair tints, hair wave sets, permanent waves, curling, hair straighteners, hair grooming aids, hair tonics, hair dressings and oxidative products, spritzes, styling waxes and balms.
16. The process of claim 1 wherein the hydrophobically modified polymer is combined with one or more of the following household cleaners and/or laundry detergents.