Silicone polyurethane blends

Abstract

The invention describes the unexpected characteristics of blends, including crosslinked reaction products of elastomeric silicone polymers with various polyurethanes and their applications in personal care products.

What we claim is: 
     
         1 . A composition comprising an admixture of a silicone elastomer and a polyurethane compound wherein said silicone elastomer comprises about 0.5% to about 99.5% by weight of said admixture and said polyurethane compound comprises about 0.5% to about 99.5% by weight of said admixture. 
     
     
         2 . The composition according to  claim 1  wherein said silicone elastomer comprises about 25% to about 75% by weight of said admixture. 
     
     
         3 . The composition according to  claim 1  wherein said silicone elastomer and said polyurethane compound are crosslinked. 
     
     
         4 . The composition according to  claim 2  wherein elastomer and said polyurethane compounds are crosslinked through olefinic groups. 
     
     
         5 . The composition according to any of  claims 1 - 4  wherein said silicone elastomer comprises 
       
         
           
           
               
               
           
         
       
       units,
 where R 2  and R 3  are independently H, OH, C 1 -C 10  (preferably C 1 -C 3 ) alkyl or alkene groups and may vary in number average molecular weight M n  from about 1,000 to about 1,500,000. 
 
     
     
         6 . The composition according to  claim 5  wherein said silicone elastomer varies in average molecular weight M n  from about 1,000 to about 100,000. 
     
     
         7 . The composition according to  claim 5  wherein said silicone elastomer varies in average molecular weight M n  from about 2,500 to about 25,000. 
     
     
         8 . The composition according to any of  claims 1 - 7  wherein said silicone elastomer contains at least one group which is capable of crosslinking with a functional group on a polyurethane polymer which is H, OH, NH 2 , or an olefinic group. 
     
     
         9 . The composition according to any of  claims 1 - 8  wherein said silicone elastomer has the chemical structure: 
       
         
           
           
               
               
           
         
         Where R 1  and R a  are independently H, an optionally substituted C 1 -C 6  alkyl group or an optionally substituted C 2 -C 6  alkenyl group; 
         Each R 2  and R 3  is independently H, OH, or a C 1 -C 3  alkyl group; and 
         n is an integer from 5 to 50,000 
       
     
     
         10 . The composition according to  claim 9  wherein n is an integer from 10 to about 25,000, about 100 to about 10,000. 
     
     
         11 . The composition according to  claim 9  wherein n is an integer from about 100 to about 10,000. 
     
     
         12 . The composition according to any of  claims 1 - 8  wherein said silicone elastomer compound has the structure: 
       
         
           
           
               
               
           
         
         Where R 1  and R a  are independently H, an optionally substituted C 1 -C 6  alkyl group or an optionally substituted C 2 -C 6  alkenyl group; 
         Each R 2  and R 3  is independently H, OH, or a C 1 -C 3  alkyl group; 
         Each R 2a  and R 3a  is independently H, OH, or a C1-C3 alkyl group; 
         n is an integer from 5 to 50,000; and 
         j is an integer from 0 to 50. 
       
     
     
         13 . A composition according to any of  claims 1 - 8  wherein said polyurethane is according to the structure: 
       
         
           
           
               
               
           
         
         Where R 5  is an optionally substituted hydrocarbon or optionally substituted siloxane group, preferably, an optionally substituted C 1 -C 50  hydrocarbon group, optionally containing at least one olefinic group, or preferably a siloxane group according to the structure: 
       
       
         
           
           
               
               
           
         
       
       and
 R 5a  is an optionally substituted hydrocarbon or a siloxane group, preferably, an optionally substituted C 1 -C 50  hydrocarbon group, optionally containing at least one olefinic group, or a siloxane group according to the structure: 
 
       
         
           
           
               
               
           
         
         Wherein Y is absent, O or a 
       
       
         
           
           
               
               
           
         
       
       group;
 X is absent or a 
 
       
         
           
           
               
               
           
         
       
       group;
 X′ is absent or a 
 
       
         
           
           
               
               
           
         
       
       group;
 Y′ is absent or a 
 
       
         
           
           
               
               
           
         
       
       group;
 W is absent when r is an integer of 1 or more and W is absent or O when r is 0; 
 Q is absent or O; 
 T is absent or O; 
 W′ is absent when r is 0 and is a Z group when r is 1 or more; 
 W 2  is H; 
 Z is independently an ethylene group, a propylene group or a mixture of ethylene and propylene groups; 
 R 2b  and R 3b  are each independently H or a C 1 -C 3  alkyl group (preferably a C 1 -C 3  alkyl group, preferably a methyl group), preferably R 2  and R 3  are both C 1 -C 3  alkyl groups, preferably both are the same C 1 -C 3  alkyl group, preferably methyl groups; 
 R 2c  and R 3c  are independently selected from H, an optionally substituted C 1 -C 6  alkyl group (substitution with OH or a C 1 -C 3  alkyl group which itself may be optionally substituted with a hydroxyl group) or an optionally substituted C 2 -C 6  alkenyl group (which alkenyl may include an acrylate or methacrylate group); 
 R′ is an optionally substituted C 2  through C 36  (preferably, C 6  through C 22 , most preferably an isophorone group) linear, cyclic or branch-chained saturated or unsaturated hydrocarbon group (which may be monomeric or dimeric, an aromatic group, including a phenyl or benzyl group or substituted phenyl or benzyl group, an alkylphenyl, alkylbenzyl or substituted alkylphenyl or alkylbenzyl group); 
 i is 0, 1, 2, 3, 4, 5; 
 k is an integer from 0 to 100; 
 m is an integer from 1 to 100,000; 
 q is an integer from 0 to 10; and 
 r is an integer from 0 to 100, with the proviso that q or r is at least 1. 
 
     
     
         14 . A composition according to any of  claims 1 - 12  wherein said polyurethane is according to any of  FIGS. 1-8 . 
     
     
         15 . A composition according to any of  claims 1 - 12  wherein said polyurethane is according to the structure: 
       
         
           
           
               
               
           
         
         Where R 5  is an optionally substituted C 1 -C 50  hydrocarbon group or an optionally substituted siloxane group; 
         R 5a  is an optionally substituted C 1 -C 50  hydrocarbon group or an optionally substituted siloxane group; 
         R′ is an optionally substituted C 2  through C 36  linear, cyclic or branch-chained saturated or unsaturated hydrocarbon group; and 
         m is an integer from 1 to 100,000. 
       
     
     
         16 . The composition according to  claim 13  or  15  wherein m is an integer from 3 to about 1,000. 
     
     
         17 . The composition according to  claim 13  or  15  wherein m is an integer from 5 to about 500. 
     
     
         18 . The composition according to  claim 13  or  15  wherein m is an integer from 5 to about 250. 
     
     
         19 . The composition according to  claim 13  or  15  wherein m is an integer from about 5 to about 100. 
     
     
         20 . A personal care composition comprising a composition according to any of  claims 1 - 19  in combination with at least one component selected from the group consisting of water, an aqueous solvent, a non-aqueous solvent, emollients, humectants, oils, conditioning agents, surfactants, thickeners/thickening agents, stiffening agents, emulsifiers, medicaments, fragrances, preservatives, deodorant components, anti-perspirant compounds, skin protecting agents, pigments, dyes, coloring agents, sunscreens and mixtures thereof. 
     
     
         21 . A personal care composition comprising a composition according to any of  claims 1 - 19  in combination with at least two components selected from the group consisting of water, an aqueous solvent, a non-aqueous solvent, emollients, humectants, oils, conditioning agents, surfactants, thickeners/thickening agents, stiffening agents, emulsifiers, medicaments, fragrances, preservatives, deodorant components, anti-perspirant compounds, skin protecting agents, pigments, dyes, coloring agents, sunscreens and mixtures thereof. 
     
     
         22 . A personal care composition comprising a composition according to any of  claims 1 - 19  in combination with at least three components selected from the group consisting of water, an aqueous solvent, a non-aqueous solvent, emollients, humectants, oils, conditioning agents, surfactants, thickeners/thickening agents, stiffening agents, emulsifiers, medicaments, fragrances, preservatives, deodorant components, anti-perspirant compounds, skin protecting agents, pigments, dyes, coloring agents, sunscreens and mixtures thereof. 
     
     
         23 . A personal care composition comprising about 0.25% to about 99.75% of a composition according to any of  claims 1 - 19  in combination with at least one component selected from the group consisting of selected from the group consisting of water, an aqueous solvent, a non-aqueous solvent, emollients, humectants, oils, conditioning agents, surfactants, thickeners/thickening agents, stiffening agents, emulsifiers, medicaments, fragrances, preservatives, deodorant components, anti-perspirant compounds, skin protecting agents, pigments, dyes, coloring agents, sunscreens and mixtures thereof. 
     
     
         24 . The composition according to  claim 23  characterized in being easier to mix into formulations and/or in exhibiting at least one characteristic of exhibiting improved film forming properties, improved shine properties, improved hydrophilicity, improved storage properties and/or improved compatibility with polar solvents. 
     
     
         25 . The composition according to any of  claims 1 - 12  wherein said polyurethane comprises the reaction product of isophorone diisocyanate and castor oil, glycerin and glycerin esters, propylene glycol and its esters, dipropylene glycol and its esters, alkyl amines, ethoxylated alkyl amines, propoxylated alkyl amines, silicone ethoxylates or silicone propoxylates. 
     
     
         26 . The composition according to  claim 25  wherein said silicone elastomer is dispersed in dimethicone, cyclomethicone or isododecane solvents. 
     
     
         27 . The composition according to any of  claims 1 - 12  wherein said polyurethane comprises the reaction product of a isophorone diisocyanate and a fatty alcohol, an ethoxylated fatty alcohol or a propoxylated fatty alcohol. 
     
     
         28 . The composition according to any of  claims 1 - 12  wherein said polyurethane is a diurethane and said silicone elastomer dispersed in dimethicone, cyclomethicone or isododecane solvents. 
     
     
         29 . The composition according to  claim 28  wherein said diurethane is made from a diisocyanate and a branched or unsaturated fatty alcohol. 
     
     
         30 . The composition according to  claim 29  wherein said diisocyanate is isophorone diisocyanate.