COMPOSITIONS CONTAINING TITANATE SILICONE NETWORKS
The invention relates generally to gels or viscous fluids formed by the coordination of certain amino-functionalized siloxanes with titanates and the use of the same in cosmetic compositions, including for providing long-wearing, comfortable films on a keratinous surface (e.g., lips). The gels or viscous fluids may exhibit unique rheological properties, including shear thickening (dilatancy) and/or rheopecty, at low shear rates which may lead to self-leveling effects, including renewable shine.
1 . A gel or viscous fluid formed from about 3-15% by weight of a titanium alkoxide, about 5-25% by weight of a functionalized amodimethicone polymer selected from hydroxyl-functionalized amodimethicone polymers or alkoxy-functionalized amodimethicone polymers capable of hydrolysis to hydroxyl-functionalized amodimethicone polymers, and about 50-95% by weight of an oil which gels with said titanium alkoxide and hydroxyl-functionalized amodimethicone polymer.
2 . The gel or viscous fluid according to claim 1 , wherein the titanium alkoxide has the form Ti(OR 1 ) 3 (OR 2 ) where R 1 is independently selected at each occurrence from C 8-34 hydrocarbons, and R 2 is selected from C 1-7 hydrocarbons.
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8 . The gel or viscous fluid according to claim 2 , wherein R 1 is isostearyl at each occurrence and R 2 is isopropyl.
9 . The gel or viscous fluid according to claim 1 , wherein hydroxyl-functionalized amodimethicone polymer comprises end-capped hydroxyl groups.
10 . The gel or viscous fluid according to claim 1 , wherein the functionalized amodimethicone polymer is characterized by a functional group equivalent weight (FGEW) of amine of about 12-19 milli equivalents per gram.
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12 . The gel or viscous fluid according to claim 1 , wherein the functionalized amodimethicone polymer is characterized by a viscosity between about 900 and about 1,300 cps at 25° C.
13 . The gel or viscous fluid according to claim 1 , wherein the functionalized amodimethicone polymer has the structure:
where R 1 , R 2 , and R 5 are independently selected at each occurrence from C 1-8 hydrocarbon radicals, a group L 1 , or a group R 8 ; R 6 and R 7 are independently divalent C 1-6 hydrocarbon radicals, R 3 is hydrogen, a group L 1 , or a group R 8 ; and R 4 is —OH, —OR*, or a group L 1 where L 1 is a radical of the form —X a —(CR* 2 ) k —(CR*═CR*) l —(CR* 2 CR* 2 O) m —X b —(CR* 2 CR* 2 O) n —(CR* 2 ) p —(CR*═CR*) q —OH, where X a and X b are independently either a bond (i.e., absent), —O—, —S—, —NH—, —NR N —; and where “k,” “l,” “m,” “n,” “p,” and “q” are independently at each occurrence integers from 0-4, where R 8 has the structure:
where R 9 and R 10 are independently selected from C 1-8 hydrocarbon radicals, and where “x,” “y,” and “z” are integers from 0-500, selected such that the polymer has a functional group equivalent weight (FGEW) of amine of about 12-19 milli-equivalents per gram and a viscosity between about 500 and about 5,000 cps at 25° C.,
where R* and R N are independently selected at each occurrence from hydrogen or C 1-8 hydrocarbon radicals; with the proviso that said polymer comprises at least two groups —OH.
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16 . The gel or viscous fluid according to claim 1 , wherein the oil is selected from silicone oils, hydrocarbon oils, fatty alcohols, ester oils, and polyolefins.
17 . The gel or viscous fluid according to claim 1 , wherein the oil is an optionally hydrogenated polyolefin formed from the polymerization of monomers of the form (R a )(R b )C═C(R c )(R d ) where R a , R b , R c , R d are independently selected from hydrogen and C 1-6 hydrocarbon radicals.
18 . The gel or viscous fluid according to claim 17 , wherein the oil is polyisobutylene, hydrogenated polyisobutylene, polybutene, or hydrogenated polybutene.
19 . The gel or viscous fluid according to claim 1 , further comprising from about 0.05% to about 10% by weight of an amine-functionalized siloxane polymer of the form:
where R 11 -R 16 are independently selected at each occurrence from C 1-8 hydrocarbon radicals or a group R 8 , where R 8 has the structure:
where R 9 and R 10 are independently selected from C 1-8 hydrocarbon radicals, and where “n” and “z” are integers from 0-300, selected such that the polymer has a viscosity between about 1 and about 2,500 cps at 25° C. and a FGEW between about 100 and about 2,000 g/mol.
20 . The gel or viscous fluid according to claim 1 , wherein the gel is characterized by a shear thickening (dilatant) rheology at a first range of shear rates and a shear thinning rheology at a second range of shear rates greater than said first range of shear rates.
21 . The gel or viscous fluid according to claim 1 , wherein the gel is characterized by a shear thickening (dilatant) rheology at a first range of shear rates from about 1 (1/s) to about 15 (1/s) and a shear thinning rheology at a second range of shear rates greater than said first range of shear rates.
22 . The gel or viscous fluid according to claim 1 , wherein the gel is characterized by a rheotectic rheology at a first shear rate and a thixotropic rheology at a second shear rate greater than said first shear rate.
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24 . A cosmetic composition comprising the gel or viscous fluid according to claim 1 , said cosmetic composition further comprising from about 1% to about 35% by pigments.
25 . The cosmetic composition according to claim 24 , further comprising an ingredient selected from the group consisting of film forming polymers, waxes, co-gellants, thickeners, stabilizers, emulsifiers, humectants, emollients, organic sunscreens, and preservatives.
26 . A composition according to claim 24 , wherein the composition is a stable gel on heating to 150° F. for two weeks.
27 . A composition according to claim 24 , wherein the composition is a stable gel on heating to 110° F. for two weeks.
28 . A cosmetic composition comprising a gel or viscous fluid formed from about 3-15% by weight of isopropyl triisostearyl titanate, about 5-25% by weight of a hydroxyl-functionalized amodimethicone polymer, about 50-95% by weight of an oil which gels with said isopropyl triisostearyl titanate and hydroxyl-functionalized amodimethicone polymer, and from 0 to about 10% by weight end-capped amine-functionalized siloxane polymer; wherein the hydroxyl-functionalized amodimethicone polymer has the structure:
wherein R 6 and R 7 are independently groups —(CH 2 ) k —, where k is an integer from 1-6; and where “x,” “y” are integers from 1-500, selected such that the polymer has a functional group equivalent weight (FGEW) of amine of about 12-19 milli-equivalents per gram and a viscosity between about 500 and about 2,500 cps at 25° C.;
and wherein the end-capped amine-functionalized siloxane polymer of the form:
where “n” is an integer from 1-300, selected such that the polymer has a viscosity between about 10 cps and about 2,500 cps at 25° C.
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38 . A method of forming a glossy film on a human integument comprising applying to said integument a deposit of a composition according to claim 24 , wherein said composition is self-leveling upon the removal of a shear force to regenerate a glossy film.
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