MXPA97006752A - Elastomer gels containing volatile silicones of low weight molecu - Google Patents

Abstract

The present invention relates to a composition comprising the hydrosilylation product by addition of a functionalized linear alkenyl polyorganosiloxane and an MHQ resin, and a low molecular weight silicone when subjected to shear stress provides components in personal care formulations which has dispersion capacity and improved substance

Description

ELASTIC GELS THAT CONTAIN VOLATILE SILICKS OF BR3Q WEIGHT HOLECULFíR FIELD OF LF > INVENTION The present invention relates to a silicone composition useful as a thickening agent for volatile silicones of low molecular weight. The present invention also relates to a process for causing gels comprising silicone to flow by mixing low molecular weight silicones with the gel and processing the mixture.

BACKGROUND OF THE INVENTION Silicones can have many uses in a variety of fields. They have found great commercial application in products as diverse as sealants. silicone rubbers, adhesives and cosmetics. It has been found that silicone oils are particularly convenient components of cosmetic compositions because the materials impart a uniform feel. soft and dry to the cosmetic composition among other benefits such as increased luster (or brightness) apparent. The general use of silicones in cosmetic formulations has been somewhat complicated by the fact that while low molecular weight silicones impart desirable properties to a composition, they are volatile and have low viscosity, while silicones overcome these disadvantages they are undesirably viscous. When it has been convenient to use low viscous silicon oils in a cosmetic application, thickening agents have been used to increase the viscosity of the solution and delay the evaporative loss of the low molecular weight volatile silicone oil. This process, although effective, has the disadvantage of decreasing the dispersion capacity of the silicone oil, and leaves a dense fatty touch on the skin. Dispersibility and soft, dry feel are properties associated with low viscosity silicones that impart a convenient feel to the composition when applied as a cosmetic formulation. Materials that have found application in attempting to retain the desirable properties of low molecular weight silicone oils in cosmetic compositions, while reducing evaporative losses due to high volatility, have been, among others, dextrin fatty acid esters, sucrose fatty acid esters, trimethylsilyl substituted polyhydric alcohols, tri-ethylsilyl substituted polysaccharides, cellulose ethers containing fatty acid esters, and organically modified clay minerals. These materials have the disadvantage that the soft touch and the dispersion capacity imparted by the low viscosity silicone oil changes, with the result that the composition no longer possesses those properties that first suggested the use of the silicone oil of low viscosity Another disadvantage of these thickening agents or volatility inhibitors is that a large number of them are water-soluble and should be used as dispersions in water or solutions. With hydrophobic silicone oils, the introduction of water thus requires the use of emulsifiers and cornp > enhancers, complicating the formulation of the cosmetic and generally decreasing the stability of the formulation with respect to the separation of the component phases. Recently, another approach has been developed to retain the properties of low viscosity silicone oils in cosmetic compositions, where the low viscosity silicone oil is combined with the addition polymerization product between an organohydrogen polysiloxane and an organopolysiloxane of functionalized alkenyl (patent of EUR 4,987,169). The organohydrogen polysiloxane used in those formulations comprised HSiOi.s (TH), RSiO? (T), RHSiO (DH), R2SiO (D), R2HSI0.5 (IH) and R3SiOo.s (M > The crosslinking hydride compound used was thus a compound of the general formula: RI "HHbDcDHdTtTHf Run when the crosslinking compound admits T groups either as hydride or substituted by R, the preference in this technology is for linear hydride materials because the addition polymerization proceeds more uniformly The R groups in the above formulas are typical organic substituents known in the art.

Subsequently, a low molecular weight silicone oil is added to the added polymerized interlaced product, and the mixture is treated by applying a shear force. This material can be used by itself as a cosmetic component or as a thickening agent, and has the properties of a grease and can be used in a wide variety of industrial lubrication applications, as well as the contemplated cosmetic application. The material prepared in this way can be considered as a lightly entangled elastomer with a volatile silicone oil of low molecular weight dissolved therein. Because the precursor crosslinker hydride is preferably linear and only moderately branched when T groups are incorporated, the addition polymerized product does not possess a strong network of entanglements in the resulting polymer. The linear and slightly interlaced networks suffer from the disadvantage of having lower efficiency to increase the viscosity of a low molecular weight silicone. In addition to increasing the cost of the product, higher levels of entangled silicones leave more residue when volatile low molecular weight silicone evaporates during use. In some cosmetic applications, for example deodorants or antiperspirants, a greater amount of waste is a major disadvantage, as it contributes to the staining of clothes. In addition, the linear and slightly interlocked silicones do not form a film as easily as the more tightly entangled silicones. The lack of film formation is a disadvantage in a cosmetic application because a film provides a softer and more uniform feel compared to the thicker and less convenient touch of a linear silicone.

BRIEF DESCRIPTION OF THE INVENTION Be now describes that tightly entangled elastomers prepared from polymerization by the addition of alkenyl organopolysiloxane and MHQ resin can be combined with a volatile low molecular weight silicone oil and processed to provide a convenient component for cosmetic compositions. . The present invention provides a silicone composition comprising: (R) a silicone formed by the hydrosilylation product of (1) a linear alkenyl clogged polyorganosiloxane having the formula: iaD? D "iyri2-, where the subscript x is? n number greater than 500, the subscript y is a number that varies from 0 to approximately 20, the subscript a is a number that varies from 0 to 2, subject to the limitation that a + and is within the scale of 1 to about 20, with Mvi defined as: RlR2R3SÍ0? / 2 where R1 is a monovalent unsaturated hydrocarbon radical having from two to ten carbon atoms, and R * and R3 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms. carbon, with D defined as: 4 5 SÍ02 / 2 where R * and R &s are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, with Dvi defined as: D i = R6? SÍ02 / 2 where R * is a monoval unsaturated hydrocarbon radical which has two to ten carbon atoms, and R? is independently a monovalent hydrocarbon radical of one to forty carbon atoms with M defined as: with Rβ, R9 and Rio each independently a monovalent hydrocarbon radical of one to forty carbon atoms; Y (2) a resin having the formula: (MHwQz) j where 0 has the formula SIO4 / 2 and with M * defined as HbR113-b? I0? / 2 where RH is a monovalent hydrocarbon radical of one to forty carbon atoms , where the subscript b is a number that varies from 3, with the subscripts w and z having a ratio of 0.5 to 4.0 respectively, and the subscript j varies from around 2.0 to approximately 100; wherein said hydrosilylation is carried out in the presence of (3) a first silicone having a viscosity of less than about 1,000 centistokes at 25 ° C; forming a gel that has a hardness of RSTM durometer D-2240-91 of at least 5; and (B) a second silicone having a viscosity less than about 1,000 centistokes at 25 ° C, wherein said gel is suspended in said second silicone and subjected to mixing with said second silicone; thus producing a uniform liquid comprising said second silicone and said gel, whereby said uniform liquid has a viscosity ranging from 500 to 150,000 centistokes at 25 ° C. The gel (having a durometer hardness of flSTM D-2240-91 of at least 5) is preferably prepared in a silicone selected from the group consisting of cyclic silicones having the formula: Df where the subscript f is an integer which varies from about three to about 6 with D defined as: R4 RS YES2 / 2 where R * and R5 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms and linear silicones having the formula: M'D ' iM 'where D' is defined as: R * R5 Si? 2/2 where R * and R5 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, and M 'has the formula: R12 R13 R14 YES01 / 2 where R12, R13 and R1 * are each independently monovalent hydrocarbon radicals of one to forty carbon atoms. Preferably, the gel is suspended and mixed in a silicone selected from the group consisting of cyclic silicones having the formula Df where the subscript f is an integer ranging from about three to about 6 with D defined as R * RsSi? 2/2 where R * and R5 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms and linear silicones having the formula M'D'iM 'where D' is defined as R * R5SÍ02 / 2 where R * and RS are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, and M 'has the formula R12 R13 R14 YES01 / 2 where R * 2, R13 I * e0n each independently monovalent hydrocarbon radicals of one to forty carbon atoms. The present invention also provides a method for dispersing a silicone gel having a durometer hardness of RSTN D-2240-91 of at least 5 in a silicone liquid comprising: (R) hydrosilylation of (1) a clogged polyorganosiloxane linear alkenyl having the formula: iaDxDviyM-s-, where the subscript x is a number greater than 500, the subscript y is a number that varies from 0 to approximately 20, the subscript a is a number that varies from 0 to 2, subject to the limitation that a + and is within the range of 1 to about 20, with Mwi defined as: Rl R2 R3 YES0? / 2 where R1 is a monovalent unsaturated hydrocarbon radical having from two to ten atoms carbon, and R2 and R3 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, with D defined as: R RS SIO2 / 2 where R * and R5 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms , c on Dvl defined as: D i = R6R7BÍ? 2/2 where R * is a monovalent unsaturated hydrocarbon radical having from two to ten carbon atoms, and R7 is independently a monovalent hydrocarbon radical of one to forty carbon atoms with defined M as: M = R8 R9 Rl0 Si0? / 2 with Rβ, R9 and RIO each independently a monovalent hydrocarbon radical of one to forty carbon atoms; with (2) a resin having the formula: (nHw ??) j where 0 has the formula SÍO4 / 2 and with riH defined as Hb R1 13- b SÍ0? / 2 where R * 1 is a monovalent hydrocarbon radical of one to forty carbon atoms, where the subscript b is a number that varies from 3, with the subscripts w and z having a ratio of 0.5 to 4.0 respectively, and the subscript j varies from about 2.0 to about 100; in the presence of (3) a first silicone having a viscosity less than about 1,000 centistokes at 25 ° C; (B) thus forming a gel having a durometer hardness of RSTM D-2240-91 of at least 5; and (or by suspending said gel with a second silicone having a viscosity less than about 1,000 centistokes at 25 ° C, and (D) mixing said gel with said second silicone (E) thereby producing a uniform liquid comprising said second silicone and said gel, whereby said uniform liquid has a viscosity ranging from 500 to 150,000 centistokes a ° C.

DETAILED DESCRIPTION OF THE INVENTION The composition of the present invention comprises the hydrosilylation product by addition of (1) a linear alkenyl polyorganosiloxane clogged having the formula: Mvi »DBD» iyl2- «wherein the subscript x ee a number greater than 500 preferably greater than 600 , more preferably greater than 700, and most preferably greater than 800, the subscript y is a number ranging from zero to about 20, preferably ranging from zero to about 10, more preferably ranging from zero to about 5, and most preferably varying from zero to about 4, the subscript a is a number that varies from zero to 2, subject to the limitation that a + and is within the range of about 1 to about 20, preferably from one to about 10, more preferably about from 1.5 to about 10, and most preferably from about 1.5 to about 6, with M i co or: R1 R2 R3 YES01 / 2 where R1 is an unsaturated hydrocarbon radical or monovalent having from two to ten carbon atoms, preferably styryl, allyl and vinyl, more preferably allyl and vinyl, and most preferably vinyl, and R2 and R3 are each independently selected from the group of monovalent hydrocarbon radicals of 1 to 40 atoms of carbon, preferably monovalent hydrocarbon radicals of 1 to 20 carbon atoms, more preferably of the group consisting of methyl, ethyl, propyl, isopropyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, phenyl, benzyl and mesityl; and most preferably from the group consisting of methyl and phenyl with D defined as: R * RSSi? 2/2 where R * and R5 are each independently selected from the group of monovalent hydrocarbon radicals of 1 to 40 carbon atoms, preferably monovalent hydrocarbon radicals of 1 to 20 carbon atoms, more preferably of the group consisting of methyl, ethyl, propyl, iso-propyl, n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, phenyl, benzyl and mesityl; and most preferably from the group consisting of methyl and phenyl; with Dvi defined co or: Dvi = R6R7si? 2 2 where R6 is a monovalent unsaturated hydrocarbon radical having from two to ten carbon atoms, preferably styryl, allyl and vinyl, more preferably allyl and vinyl and most preferably vinyl, and R? is independently selected from the group of monovalent hydrocarbon radicals of 1 to 40 carbon atoms, preferably monovalent hydrocarbon radicals of 1 to 20 carbon atoms, more preferably from the group consisting of methyl, ethyl, propyl, isopropyl, n-butyl , iso-butyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, phenyl, benzyl and mesityl; and very preferably from the group consisting of methyl and phenyl and with M defined as ñ = RßR 9 Riosi ?? 2 with Rβ, 9 and Rio each independently selected from the group of monovalent hydrocarbon radicals of 1 to 40 carbon atoms, preferably monovalent hydrocarbon radicals of 1 20 carbon atoms, more preferably of the group consisting of methyl, ethyl, propyl, iso propyl, n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, phenyl, benzyl and mesityl; and most preferably from the group consisting of methyl and phenyl and (2) a resin having the formula: (NHwC where 0 has the formula SÍO4 / 2 and where MH has the formula Hb RÜ3-6 SÍO1 / 2 with the subscript b varying from 1 to 3, wherein RH is a monovalent hydrocarbon radical of 1 to 40 carbon atoms, preferably a monovalent hydrocarbon radical of 1 to 20 carbon atoms, more preferably selected from the group consisting of methyl, ethyl, propyl , iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, phenyl, benzyl and mesityl, and most preferably selected from the group consisting of methyl and phenyl, with the subscripts w and z having a ratio of 0.5 to 4.0 respectively, preferably 0.6 to 3.5, more preferably 0.75 to 3.0, and most preferably 1.0 to 3.0; and the subscript j varying from about 2.0 to about 100, preferably from about 2.0 to about 30, more preferably from about 2.0 to about 10, and most preferably from about 3.0 to about 5.0; and (3)? n silicon, wherein the mixture of (3) with the adduct of (1) and (2) has been subjected to shear forces. The hydroxylation reaction is carried out in the presence of a hydrosilylation catalyst selected from the group of hydrosilylation catalysts of ruthenium, osmium, rhodium, iridium, palladium and platinum. Examples of said catalysts are those described in the Patents of E.U.fl. 2,823,218; 3,159,601; 3,159,662; and 3,775,452. Applicants define silicone, component (3), as any organosilicon compound having a viscosity of less than about 1,000 centietokes at 25 ° C, preferably less than about 500 centistokes at 25 ° C, more preferably less than about 250 centistokes at 25 ° C, and most preferably less than 100 centistokes at 25 ° C. flsí, the low molecular weight cyclic silicones such as D3, D «, Ds and De (ie, Df where the subscript f varies from 3 to 6), where D is as defined above with R * and RS being preferably methyl , as well as linear low molecular weight silicones having the formula Ri'D'iM 'where the substituents in D "are independently selected from the same substituents as defined above for D, and fl' has the formula R12 R13 R14 YES01 / 2 where Ri2 Ri3 and RI * are each independently selected from the group of monovalent hydrocarbon radicals of 1 to 40 carbon atoms, preferably monovalent hydrocarbon radicals of 1 to 20 carbon atoms, preferably from a group consisting of methyl, ethyl, propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, phenyl, benzyl and mesityl, and most preferably from the group consisting of methyl and phenyl or, and the subscript i ranges from zero to about 300, preferably from about zero to about 100, more preferably from about zero to about 50, and most preferably from zero to about 20, said volatile silicones. Preferably, component (3) is a volatile low molecular weight eylicon. The materials used to prepare the gels of the present invention have been defined in terms of formulas that refer to the structural elements M, D, T and Q within the definitions commonly accepted in the practice of silicone chemistry. As individual molecules, or as pure compounds, the subscripts of these formulas can assume only integral values (including zero when appropriate). As complex mixtures of compounds, each of which individually satisfies the molecular definition, the subscripts that describe the mixture will assume non-integral values (including zero when appropriate). However, those non-integral values for a given sub-index will still vary between the upper limit and the lower limits of the scale for that particular sub-index when stipulating integral values. For example, in the description of the pure compound of component (1), the subscript a can have the values of 0, 1 or 2. As a mixture of compounds, component (1) will have an average value for the subscript a it depends on the number of individual molecular species in lae that a is equal to 0, 1 and 2. The same explanation applies to component (2). Ris, the average subscripts for component (1), when component (1) is a functionalized vinyl silicon as the specific alkenyl functionalization and is a mixture of several vinyl-containing compounds, as defined, will encompass a weight scale vinyl equivalents ranging from about 1,500 to about 150,000, preferably about 4, 500 to about 110,000, more preferably from about 10,000 to about 70,000, and most preferably from about 15,000 to about 45,000. It should be noted that these equivalent weights are specific equivalent weights for the vinyl substitution, since the substitution with other olefinic substituents would generate a different but comparable scale of equivalent weights. Also, the average subscripts for component (2) as a mixture, as defined, will encompass a scale of equivalent hydride weights ranging from about 80 to about 190, preferably from about 82 to about 170, more preferably about In addition, it is convenient that the alkenyl functionality present in component (1) vary on the average from about 1 to about 20 alkenyl groups per molecule, preferably about 20 to about 150, and most preferably about 87 to about 130. of about 10 alkenyl groups per molecule, more preferably from about 1.5 to about 10 alkenyl groups per molecule, and most preferably from about 1.5 to about 6 alkenyl groups per molecule. Conventionally, it is desirable that the hydride functionality present in component (2) vary on average from about 8 to about 400 SiH groups per molecule, preferably from about 8 to about 100 SiH groups per molecule, more preferably from about 8. to about 50 SiH groups per molecule, and m and preferably from about 8 to about 20 SiH groups per molecule. The components (1) and (2) (as compound or explosive) are catalytically reacted together in the presence of the component (3) to produce a gel having a polymer content that is approximately from about 5 to about 75. % by weight interlaced polymer, preferably from about 10 to about 60% by weight of interlaced polymer, more preferably from about 15 to about 40% by weight of interlaced polymer, and most preferably from about 20 to about 35% by weight of interlaced polymer, the balance being volatile silicone oil of low molecular weight. After this initially produced gel is prepared, it is mixed with an additional amount of a volatile low molecular weight silicone, i.e., the additional components (3) which is possibly different from the component (3) used to prepare the initially produced gel , and subjected to mixing or shear forces to produce a uniform liquid gel that is from about 1 to about 25 wt% crosslinked polymer, preferably from about 2 to about 20 wt% crosslinked polymer, more preferably about 3 to about 15% by weight interlaced polymer, and rn? And preferably from about 3 to about 10% by weight interlaced polymer, the balance being volatile low molecular weight silicone oils, component (3) or a mixture of compounds that meet the definition of component (3). The initially produced gel is sufficiently viscous, so that the flow of the liquid is not often observed. As an entangled polymer material, the initially produced gel, having 25 wt% crosslinked polymer network, has a durometer hardness number, RSTI D-2240-91, of at least 5, preferably of at least 7, more preferably of at least 10 and most preferably at least 15. The RSTM test numbers for the durometer hardness test are indicative of a material sufficiently resistant to flow which can be characterized primarily as a solid. The resistance to the flow of the initially produced gel is overcome by mixing at high speed or shear, wherein the composition or mixture results in a uniform liquid and has a viscosity ranging from about 500 to about 150., 000 centistokes at 25 ° C, more preferably the resulting viscosity of the composition or mixture ee of from about 1,000 to about 100,000 centistokes at 25 ° C, and most preferably the resulting viscosity of the composition or mixture is from about 10,000 to about 60,000 centistokee at 25 ° C. By shear, the applicants refer to the imposition of a force on the composition, where the mixture is treated using a three-roll mill, a two-roll mill, a sand mill, a colloid mill, a Gaulin furnace , a Sonilator, RossTM mixer, microfluorizer, etc. Submitting these compositions to a shear force produces an appropriate component for use in peronal care or cosmetic applications having improved dispersibility and improved substance or feel. Personal care applications where this property is most convenient include, but are not limited to, deodorants, antiperspirants, skin creams, facial creams, hair care products such as shampoos, foams, styling gels, protective creams and colored cosmetics such as lipsticks, foundation for makeup, ruboree, makeup and mascara; and other cosmetic formulations where the silicone components have been added. All U.S. Patents referenced in the present invention are included and incorporated herein by reference.

EXPERIMENTS EXAMPLE 1 Preparation of silicone polymers intertwined in volatile silicone oil "of low molecular weight The entangled silicone polymers were prepared by mixing a given species of silyl hydride, a given vinyl species, and a volatile low molecular weight silicone oil in a reaction flask and mixing. To said mixture a standard hydrosilylation catalyst was added. Hydrosilylation in the presence of platinum catalysts is described in United States Patents 3,159,601; 3,159,662; 3,220,972; 3,715,334; 3,775,452 and 3,814,730, included and incorporated in the present invention as reference. The mixture containing the hydrosilylation catalyst was heated and allowed to react, for example, 1.11 grams of (MH2Q, = 2, z = lyj = 4, 250 g of vinyl-terminated siloxane having an equivalent weight of 33,750. grams / equivalents of vinyl, and 650 g of octarnetylcyclotetrasiloxane, were added to a pulp mixer and stirred, 100 g of 0.11% platinum catalyst in octamethylcyclotetrasiloxane was added in. The reaction was stirred and heated to B0 ° C through 2 hours The reaction was cooled and the product was isolated.After this general procedure, compositions A to T were prepared. The vinyl siloxane was varied through these preparations: 1) Divinyl siloxane (A) is MVÍ KMVÍ, where MVi is RiR2R3si0? / 2 where R is (CH2 = CH) and R2 and R3 are each independently CH3, and D is R * RsSi? 2/2 where R * and R5 are each independently CH3, with x varying from about 450 haeta about 1250; 2) Monovinyl siloxane (B) is MViDyM, where MV * is R R2R3si0? / 2 where Rl is (CH2 = CH) and R2 and R3 are each independently CH3, and D is R * Rdsi? 2/2 where R * and RS are each independently CH3, being and approximately equal to 200 and M is R8R R osi ?? 2, where Rβ, R9 and RIO each independently CH3; and 3) Pentavinyl siloxane (C) is M iDVikM where M is R8 R10SÍ0Í 2, where Rβ, R9 and Rio each independently CH3, and D is R * R5Si? 2/2 where R * and R5 are each independently CH3, being i approximately equal to 200, and DVi defined as: DVi = R6R7Si? 2/2 / where R * is (CH2 = CH) and R? is independently CH3, with k being approximately equal to 5.

TABLE 1 Preparation of polymeric siloxane interlaced in low molecular weight volatile silicone oil: resin (M ^ Q) reacted with finished divinyl siloxane (A) Compound Relation of Divinyl Polymer, Platinum Silicone, H-? I with siloxane% by volatile weight ppm Vinyl-Si A, weight of low molecular weight molecular weight,% ^ _ by weight R 0.7 / 1.0 66800 25 75 10 B 0.9 / 1.0 66800 25 75 10 C 1.0 / 1.0 66800 25 75 10 D 1.1 / 1.0 66800 25 75 10 E 1.3 / 1.0 66800 25 75 10 F 1.5 / 1.0 66800 25 75 10 G 1.58 / 1.0 66800 25 75 10 H 1.3 / 1.0 33500 25 75 10 I 1.3 / 1.0 92700 25 75 10 3 1.3 / 1.0 66800 25 75 * 10 U 1.3 / 1.0 66800 50 50 5 V 1.3 / 1.0 66800 15 85 5 Note: * With the exception of preparation 3 using D5 (decarnetylcyclopentasiloxane), all other preparations used D4 (octamethylcyclotetrasiloxane). In the preparations A to G the variations in the hydride to vinyl ratio of the hydroylation reaction are studied. In the preparations E, H and I the variations in the molecular weight of the vinyl component of the hydrosilylation reaction are studied. In the preparations E and 3 the variations in the volatile silicone oil of low molecular weight are studied. In the following preparations a mixture of vinyl siloxane, divinyl siloxane A and monovinyl siloxane B compounds was used, in contrast to those preparations presented in Table 1 which used only one vinyl siloxane compound, the divinyl siloxane R.

TABLE 2 Preparation of polymeric siloxane interlaced in volatile low molecular weight silicone oil: resin ("2Q reacted with mixed divinyl siloxane (A) and monovinyl siloxane iB) Corn- Rela- Divinil Mono- A / B PolíSiliPlap Siloxane vinyl mero, with tino, of H-Si R, peeo eiloxano% in volá22m with V-molecular B, weight peo til of nil-Si molebajo cular peeo molecular,% in peeo K 1.3 / 1.0 66800 15900 90 / 10 25 75 10 L 1.3 / 1.0 66800 15900 80/20 25 75 10 M 1.3 / 1.0 66800 15900 70/30 25 75 10 N 1.3 / 1.0 66800 15900 60/40 25 75 10 0 1.3 / 1.0 66800 15900 50/50 25 75 10 P 1.1 / 1.0 66800 15900 90/10 25 75 10 0 1.1 / 1.0 66800 15900 70/30 25 75 10 R 1.1 / 1.0 66800 15900 50/50 25 75 10 In the preparations K to 0 the ratio of divinyl siloxane A to monovinyl siloxane B varies at a constant ratio of hydride to vinyl. In the preparations P to R again varies the ratio of divinyl siloxane A to monovinyl siloxane B, but to a different ratios of hydride with vinyl of that in K to 0.

In the following preparations a mixture of vinyl siloxane, divinyl siloxane R and pentavinyl siloxane C compounds was used, in contrast to those preparations presented in Table 1 that only used a vinyl siloxane compound, the divinyl siloxane A.

TABLE 3 Preparation of polymeric siloxane interlaced in low molecular weight volatile silicone oil: resin (IIH2Q reacted with mixed divinyl siloxane, mixed (A) and pentavinyl siloxane (C) Compound- Divinil PentaR / B Polyvinyl siloxane vinyl polymer, with tin , of H-Si R, siloxane weight% in vol- pppm with V-molecular B, weight in weight of nil-Si mole- low molecular weight,% by weight 1.3 / 1.0 66800 16200 90/10 25 75 10 1.3 / 1.0 66800 16200 80/20 25 75 10 In the preparations reported in Table 3, the mixture of vinyl siloxanes used to prepare the interlaced material from that reported in Table 2 varies.

EXAMPLE 2 Dilution of entangled gels with volatile low molecular weight silicone oils The entangled gels prepared in Example 1 were further diluted with volatile low molecular weight silicone oils to produce a suspension. The volatile low molecular weight silicone oils used for dilution were the same as those used to prepare the interlaced gel, or dietintos. The suspension was subjected to shear forces in a homogenizer to produce a clear product of a viscosity suitable for a specific cosmetic application. The viscosity of the volatile suepeneion of the gel that had been subjected to shear forces varied from about 100 centistokes to more than about 100,000 centietokes at 25 ° C. Thus, for example, 400 g of preparation E were mixed with 1,600 g of D-, octarnetylcyclotetrasiloxane. The preparation E contains 25% by weight of the interlaced polymer, ie 100 g and, therefore, the E-permeability in 5% by weight in polymer. The 5% mixture in polymer crosslinked in D "was passed through a Ga? Lin homogenizer at 492.1 kg / cm2 pressure. The resulting material was clear and had a viscosity of 120,000 centietokes at 25 ° C. The preparation of other material in accordance with this general procedure is reported in Table 4. TABLE 4 Viscosity of entangled silicone polymers subjected to shear stress diluted to 5 wt.% Compound Gel of% wt wt% wt Viscosity, Table 1 of silicone gel cps at 25 ° C volatile low molecular weight flflflfl R R 5 95 28,400 B BBB B B 5 95 35300 C CCC C C 5 95 61,800 D DDD D D 5 95 74,100 E EE E E 5 95 115,000 F FFF F F 5 95 110,000 G GGG G G 5 95 112,000 H HH H H 5 95 47,300 I III I I 5 95 31,400 J JJJ J J 5 95 80,000 K KK K K 5 95 72,700 L LLL L L 5 95 49,000 M MMM M M 5 95 27,200 N NNN N N 5 95 8,600 0 000 0 0 5 95 2,500 P PPP P P 5 95 49,000 0000 0 0 5 95 22,000 R RRR R R 5 95 1,800 SS s 5 95 81,700 TT T 5 95 93,100 uu u 6 94 20,000 v V 3. 5 96. 5 122,000 These data indicate that: 1) as the ratio of hydride to alkenyl (vinyl) changes through 0.7 to 1.6 (hydride) and to 1.0 (alkenyl), the viscosity of the product gel increases; 2) as the molecular weight of the alkenyl component increases, extending the distance between the entangled sites, i) the capacity of the polymer gel initially produced to expand after the addition of volatile silicones increases and ii) the viscosity increases; and 3) by increasing the average functionality of the alkyd precureor from 1.3 to 2.0, the interlacing denerity and the viscosity of the resulting product increase.

EXAMPLE 3 Comparison of low density interlaced gels with high density interlaced gels The processed gels of the present invention are gels having a high interlacing density due to the use of the MHQ resin and vinyl siloxanes with a fairly low equivalent weight with respect to the vinyl group. For comparative purposes, gels having a low density interlacing network were prepared. Thus, the procedures described for preparing the gels of Example 1 were used with a linear hydride siloxane containing only one equivalent of hydride per molecule and one siloxane vinyl containing only two equivalents of vinyl per molecule (on average). Thus, 2.02 g of a hydrogen-terminated siloxane having a molecular weight of about 1.818 and 75 g of a vinyl-terminated siloxane having a molecular weight of 67,500, were mixed with 425 g of octamethylcyclotetrasiloxane. The mixture was stirred and 10 ppm of the platinum catalyst was added as described above. The mixture was heated at 80 ° C for 5 hours. The product was cooled and isolated. The viscosity was 88.5 centistokes at 25 ° C. The results show that siloxane polymers obtained from low functionality ingredients produce siloxane polymers with little interlacing and thus low efficiency to control the viscosity of volatile eloxanes.

Claims (10)

NOVELTY OF THE INVENTION CLAIMS

1. - A silicone composition comprising: (R)? N silicone formed by the hydrosilylation product of (1) a polyorganosiloxane clogged with linear alkylene having the formula: M i aD? Dviy -2- », where the subscript x is a number greater than 500, the subscript y is a number that varies from 0 to approximately 20, the subscript a is a number that varies from 0 to 2, subject to the limitation that a + y is within the scale from 1 to approximately 20, with vi defined as: RiR 3si? 2, wherein R is a monovalent unsaturated hydrocarbon radical having from two to ten carbon atoms, and R2 and R3 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, with D defined as: R * R5Si? 2 / 2, wherein * and S are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, with D "* defined as: Dvi where * is a monovalent unsaturated hydrocarbon radical having from two to ten carbon atoms, and R7 is independently a monovalent hydrocarbon radical of one to forty carbon atoms with M defined as: M = R8R RIOSÍO1 with Rβ, R9 and RIO each independently a monovalent hydrocarbon radical of one to forty carbon atoms; and (2) a resin having the formula: (MH ^ Q ^ j, where 0 has the formula SiO-j / 2 and with "defined co o: HbRH3-bSi0? 2, where RH is a monovalent hydrocarbon radical of one to forty carbon atoms where the subscript b is a number that varies from 1 to 3, with the subscripts w and z having a ratio of 0.5 to 4.0 respectively and the subscript j ranges from about 2.0 to about 100, wherein said hydrosilylation is it performs in the presence of (3) a first silicone having a viscosity of less than about 1,000 centistokee at 25 ° C, forming a gel having a durorne hardness of RSTM D-2240-91 of at least 5; and (B) a second silicone having a viscosity of less than about 1,000 centistokes at 25 ° C, where said gel is suspended in said second silicone and subjected to mixing with said second silicone, thereby producing a uniform liquid comprising said second silicone and said gel, whereby said liquid The uniform viscosity has a viscosity that varies from 500 to 150,000 centistokes at 25 ° C.

2. The composition of claim 1, wherein said linear alkoyl polylganosiloxane clogged R is an unsaturated monovalent hydrocarbon radical having two carbon atoms.

3. The composition of claim 2, wherein said linear alkenyl clogged polyorganosiloxane has an equivalent vinyl weight ranging from about 1,500 to about 150,000.

4. The composition of claim 3, wherein said resin has an hydride equivalent weight of from about 80 to about 190.

5. The composition of claim 4, wherein said first silicone is selected from the group that consists of cyclic silicones having the formula Df, wherein the subscript f is an integer ranging from about three to about 6 with D defined as R * R5Si? 2 2- where R * and RS are each independently monovalent hydrocarbon radicals of one to forty carbon atoms and linear silicones having the formula: M'D'iM ', where D' is defined as: R * RsSi? 2 2 / where R * and R5 are each independently radicalee monovalent hydrocarbon at forty carbon atoms, the eubi index i ranges from about 0 to about 300, and M 'has the formula: R12RI3RI "SI01 / 2, where Ri2, Ri3 RI" are each independently monovalent hydrocarbon radicals of one to forty carbon atoms. carbon or.

6. The composition of claim 5, wherein said first silicone is a cyclic silicone, and if f is 6.

7. The composition of claim 6, wherein said second silicone is selected from the group consisting of cyclic silicones having the formula Df, where the subscript f is an integer ranging from about three to about 6 with D defined as: R * R5Si? 2/2, where R * and RS are each independently monovalent hydrocarbon radicals of one to forty carbon atoms and linear siliconee having the formula: M'D'iM ', where D' is defined as: R <; R5Si? 2/2, where R * and R "are each independently monovalent hydrocarbon radicals of one to forty carbon atoms and M 'has the formula: R 2Ri3Ri« sioi / 2, where R 2, Ri 3 and R * are each independently monovalent hydrocarbon radicals of one to forty carbon atoms.

8. The composition of claim 7, wherein said second silicone is a cyclic silicone, and if f is 4.

9. A process for dispersing a silicone gel having a durometer hardness of ASTM D-2240-91 of at least 5 in a silicone liquid comprising: (fl) hydrosilylation of a linear alkenyl clogged polyorganosiloxane having the formula: MviaD? vlyM-2-a, where the subscript x is a number greater than 500, the subscript y is a number that varies from 0 to approximately 20, the subscript a is a number that varies from 0 to 2, subject to the limitation that a + and is within the scale of l about 20, with M * 1 defined as: R R2R3si0? / 2, where R1 is a monovalent unsaturated hydrocarbon radical having from two to ten carbon atoms, and R2 and R3 are each one independently monovalent hydrocarbon radicals of one to forty carbon atoms, with D defined as: R * RSSi? 2 2v where R * and 5 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, with D "* defined as : D i / where Rβ is a monovalent unsaturated hydrocarbon radical having from two to ten carbon atoms, and R7 is independently a monovalent hydrocarbon radical of one to forty carbon atoms with M defined as: M = RßR9Riosi ?? / 2 with Rß, R9 and RIO each independently? N ra dical monovalent hydrocarbon from one to forty carbon atoms; with (2)? a resin having the formula: (MHwQ?) j, where 0 has the formula Si0"/ 2 with MH defined as: Hb R1J3-b S.iO? / 2, where RH is? n hydrocarbon radical monovalent of one to forty carbon atoms, where the subscript b is a number that varies from 3, with the subscripts w and z having a ratio of 0.5 to 4.0 respectively and the subscript j varies from about 2.0 to about 100; in the presence of (3) a first silicone having a viscosity less than about 1,000 centistokee at 25 ° C; (B) thus forming a gel having a durometer hardness of ASTM D-2240-91 of at least 5; and (or by suspending said gel with a second silicone having a viscosity less than about 1,000 centistokes at 25 °, and (D) mixing said gel with said second silicone; (E) thereby producing a uniform liquid comprising said second silicone and said gel, whereby said uniform liquid has a viscosity ranging from 500 to 150,000 centistokes at 25 ° C.

10. A cosmetic composition comprising a silicone composition comprising: (A) a silicone formed by the product of hydroylation of (1) a linear alkenyl polyorganosiloxane clogged having the formula: MvinD? DviyM-2 --- 1 where the subscript x is a number greater than 500, the subscript and ee a number ranging from 0 to about 20, the subscript a is a number that varies from 0 to 2, subject to the limitation that a + y is within the scale of 1 to approximately 20, with M "i defined as: RiR2R3si0? / 2, where Rl is a monovalent unattached hydrocarbon radical having from two to ten carbon atoms, and R2 and R3 are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, with D defined as: R4R5SÍ02 2, where R * and Rs are each independently monovalent hydrocarbon radicals of one to forty carbon atoms, with D «? defined as: Dvi, where R * is a monovalent unsaturated hydrocarbon radical having from two to ten carbon atoms, and R7 is independently a monovalent hydrocarbon radical of one to forty carbon atoms with M defined as: with Rβ, R9 and RIO each independently a monovalent hydrocarbon radical of one to forty carbon atoms; and (2) a resin having the formula: (MHWQX) j, where 0 has the formula SÍO4 / 2 and with MH defined as: HkRH3.b SÍO1 / 2, where RH is a monovalent hydrocarbon radical of one to forty atoms carbon, where the subscript b is a number that varies from 1 to 3, with the subscripts w and z having a ratio of 0.5 to 4.0 respectively and the subscript j varies from around 2.0 to approximately 100; wherein said hydrosilylation is carried out in the presence of (3) a first silicone having a viscosity less than about 1,000 centistokes at 25 ° C; thus forming a gel having a durometer hardness of ASTM D-2240-91 of at least 5; and (B) a second silicone having a viscosity of less than about 1,000 centistokes at 25 ° C, where said gel is suspended in said second silicone and subjected to mixing with said second silicone; thus producing a uniform liquid comprising said second silicone and said gel, whereby said uniform liquid has a viscosity ranging from 500 to 150,000 centistokes at 25 ° C.