WO2007102972A1 - Personal care compositions containing plasticized siloxane gum dispersions - Google Patents

Abstract

A process is disclosed to prepare personal care compositions containing siloxane gums by combining an aqueous suspension of a siloxane gum with a silicone or organic oil to form a plasticized siloxane gum. The plasticized siloxane gum is combined with personal care ingredients to form personal care compositions. The resulting personal care compositions provide longer improved feel without the siloxane gum exhibiting a “balling effect” upon application of the personal care composition.

Description

PERSONAL CARE COMPOSITIONS

CONTAINING PLASTICIZED SILOXANE GUM DISPERSIONS

Cross Reference to Related Applications [0001] None.

Technical Field

[0002] The present invention relates to a process to prepare personal care compositions containing siloxane gums by combining an aqueous suspension of a siloxane gum with a silicone or organic oil to form a plasticized siloxane gum dispersion. The plasticized siloxane gum is combined with personal care ingredients to form personal care compositions. The resulting personal care compositions provide longer improved feel without the siloxane gum exhibiting a "balling effect" upon application of the personal care composition.

Background

[0003] EP 1263840 describes a silicone suspension from a mechanical suspension polymerization process of a high molecular weight linear polymer with a kinetic viscosity above 120 million mm²/sec (cSt). The use of this dispersion has been described in GB20012647 for dry skin sensory benefits from shower gels. In skin care creams, it provides a difference in sensory at very low level, a long lasting perception of the skin being moisturized and good protection; it is also a texture enhancer especially for water-in-silicone emulsions. In hair care applications, this high molecular weight dispersion have good hair conditioning properties and improve the long lasting of fragrance as described in WO200424114. The use of this dispersion in combination with different cosmetic raw materials for improving the formulation overall sensory attributes have also been described in the following patent applications ,US 20050048016Al, US 20030171479 Al, US20030105169 , and WO200458212 .

[0004] One of the limitation in the use of this dispersion in skin care products, especially in o/w systems, is the balling effect when the dispersion is rubbed on the skin above a certain concentration into the formulation. [0005] The present inventors have discovered the addition of different lipophilic materials to aqueous suspensions of siioxane gums prior to their introduction into the personal Care formulations provides compositions having no balling effect when rubbing the formulation on the skin. In addition, it also decreases the observed drag feel. It has been also demonstrated that resulting siioxane gum suspensions are quite stable as no liquid would separate from the plasticized suspension after one month at 40⁰C. The other surprising finding was that the type of material to be absorbed on the suspension was not limited to silicones and could also be organic materials, usually not compatible with high molecular weight silicone polymer. In addition, depending on the type of material post added, different particle size have been observed resulting in different skin feels including in shower gels type formulations.

[0006] It has been further discovered that plasticized suspension using post addition also improve the overall conditioning of hair when delivered from shampoo and conditioners compared to the non plasticized dispersion.

Summary

[0007] The present invention relates to a process to prepare personal care compositions containing siioxane gums comprising;

I) combining

A) an aqueous suspension of a siioxane gum,

B) a silicone or organic oil, to form a plasticized siioxane gum dispersion,

II) combining the plasticized siioxane gum dispersion with

C) a personal care ingredient to form the personal care composition.

[0008] The present invention further relates to the personal care compositions prepared according to the process. Such compositions provide longer improved feel without a balling effect and also demonstrate improved hair and skin conditioning benefits. Detailed Description

A) The Aqueous Suspension of a Siloxane Gum

[0009] Component (A) is an aqueous suspension of a siloxane gum. Siloxane gums are known in the art and may also be referred to as silicone gums. "Siloxane gums" as used herein refers to organopolysiloxanes having sufficiently high molecular weight (Mw) to provide kinetic viscosities greater than one million cSt. While any organopolysiloxane considered as a gum may be selected as component (A)₅ typically the siloxane gum is a diorganopolysiloxane gum with a molecular weight sufficient to impart a William's plasticity number of at least about 30 as determined by the American Society for Testing and Materials (ASTM) test method 926.

[0010] The silicon-bonded organic groups of the diorganopolysiloxane are independently selected from hydrocarbon or halogenated hydrocarbon groups which contain no aliphatic unsaturation. These may be specifically exemplified by alkyl groups having 1 to 20 carbon atoms, such as methyl, ethyl, propyl, butyl, pentyl and hexyl; cycloalkyl groups, such as cyclohexyl and cycloheptyl; aryl groups having 6 to 12 carbon atoms, such as phenyl, tolyl and xylyl; aralkyl groups having 7 to 20 carbon atoms, such as benzyl and phenylethyl; and halogenated alkyl groups having 1 to 20 carbon atoms, such as 3,3,3-trifluoropropyl and chloromethyl. Thus, diorganopolysiloxane can be a homopolymer, a copolymer or aterpolymer containing such organic groups. Examples include homopolymers comprising dimethylsiloxy units, homopolymers comprising 3,3,3-trifluoropropylmethylsiloxy units, copolymers comprising dimethylsiloxy units and phenylmethylsiloxy units, copolymers comprising dimethylsiloxy units and 3,3,3-trifluoropropylmethylsiloxy units, copolymers of dimethylsiloxy units and diphenylsiloxy units and interpolymers of dimethylsiloxy units, diphenylsiloxy units and phenylmethylsiloxy units, among others. The molecular structure is also not critical and is exemplified by straight-chain and partially branched straight-chain structures, the linear systems being the most typical.

[0011] The siloxane gums of component A) are dispersed in water so as to provide an aqueous suspension. Preparation of aqueous suspensions of siloxane gums are known in the art. The aqueous suspension may be prepared by first preparing a siloxane gum and suspending it in water using various mixing techniques. For example, those processes known in the art to prepare mechanical emulsions of siloxane gums may be used. Alternatively, the suspension of the siloxane gums may employ various in situ techniques wherein the siloxane gum is prepared after first dispersing or emulsifying various siloxane monomers, then causing the siloxane monomers to polymerize in the aqueous suspension to form the siloxane gum.

[0012] In a preferred embodiment, the aqueous siloxane gums are selected from those described in EP 0874017 which is incorporated herein by reference for its teaching of suitable aqueous siloxane gums. EP 0874017 teaches siloxane gums that are silicone copolymers obtained by a chain-extension reaction, in the presence of a catalyst, starting with at least:

(a) one polysiloxane (i) having at least one reactive group and preferably one or two reactive groups per molecule; and

(b) one organosilicon compound (ii) that reacts with the polysiloxane (i) via a chain- extension reaction.

[0013] In particular, the polysiloxane (i) is chosen from the compounds of formula (I): R2 Rl R2

I I I

R2 - Si - ( O - Si ) n-O Si -R2

I I I

R2 Rl R2

in which Rl and R2, independently of each other, represent a hydrocarbon-based group containing from 1 to 20 carbon atoms and preferably from 1 to 10 carbon atoms, such as methyl, ethyl, propyl or butyl, or an aryl group such as phenyl, or a reactive group, n is an integer greater than 1, with the proviso that there are on average between one and two reactive groups per polymer.

[0014] The term "reactive group" means any group capable of reacting with the organosilicon compound (ii) to form a block copolymer. Reactive groups that may be mentioned include hydrogen; aliphatically unsaturated groups and especially vinyl, allyl or hexanyl; a hydroxyl group; alkyoxy groups such as methoxy, ethoxy or propoxy; alkoxyalkoxy groups; an acetoxy group; amino groups, and mixtures thereof. Preferably, more than 90% and better still more than 98% of the reactive groups are at the end of a chain, i.e. the R2 groups generally constitute more than 90% and even 98% of the reactive groups. Preferably, n is such that the polysiloxanes have a viscosity ranging from about 1 to 1 x 10⁶ mm²/sec at 25°C. The value for n may range from 5 to 30, alternatively from 10 to 30, or alternatively from 15 to 25.

[0015] The polysiloxanes of formula (I) are substantially linear polymers, i.e. polymers comprising few branches, and generally less than 2 mol % of siloxane units. Moreover, the groups Rl and R2 may optionally be substituted with amino groups, epoxy groups or groups comprising sulphur, silicon or oxygen. Preferably, at least 80% of the groups Rl are alkyl groups and better still methyl groups. Preferably, the reactive group R2 at a chain end is an aliphatically unsaturated group and especially vinyl.

[0016] Polysiloxanes (i) that may especially be mentioned include dimethylvinylsiloxypolydimethylsiloxane, a compound of formula (I) in which the radicals

Rl are methyl radicals and the radicals R2 at the chain ends are vinyl radicals, whereas the other two radicals R2 are methyl radicals.

[0017] The organosilicon compound (ii) may be chosen from the polysiloxanes of formula

(I) or compounds acting as chain extenders. If it is a compound of formula (I), the polysiloxane (i) will comprise a first reactive group and the organosilicon compound (ii) will comprise a second reactive group that will react with the first. If it is a chain extender, this may be a silane, a siloxane (disiloxane or trisiloxane) or a silazane. The organosilicon compound (ii) is preferably a liquid organohydrogenopolysiloxane of formula (II): in which n is an integer greater than 1 and preferably greater than 10, for example ranging from 5 to 30, preferably from 10 to 30 and better still from 15 to 25. According to one particular embodiment of the invention, n is equal to 20.

[0018] The silicone block copolymers used according to the invention are advantageously free of oxyalkylene groups, especially free of oxyethylene and/or oxypropylene groups.

The catalyst for the reaction between the polysiloxane and the organosilicon compound may be chosen from metals and especially from platinum, rhodium, tin, titanium, copper and lead.

It is preferably platinum or rhodium.

[0019] The dispersion of silicone copolymer particles used in the composition according to this embodiment may be obtained especially, for example, by mixing (a) water, (b) at least one emulsifier, (c) the polysiloxane (i), (d) the organosilicon compound (ii) and (e) a catalyst.

Preferably, one of the constituents (c), (d) or (e) is added at the end to the mixture, in order for the chain-extension reaction to begin only in the dispersion.

[0020] As emulsifiers that may be used in the preparation process for this embodiment to obtain the aqueous particle dispersion, mention may be made of nonionic or ionic (anionic, cationic or amphoteric) emulsifiers. They are preferably nonionic emulsifiers, which may be chosen from polyalkylene glycol ethers of fatty alcohols, containing from 8 to 30 carbon atoms and preferably from 10 to 22 carbon atoms; polyoxyalkylenated and especially polyoxyethylenated sorbitan alkyl esters, in which the alkyl radical contains from 8 to 30 carbon atoms and preferably from 10 to 22 carbon atoms; polyoxyalkylenated and especially polyoxyethylenated alkyl esters, in which the alkyl radical contains from 8 to 30 carbon atoms and preferably from 10 to 22 carbon atoms; polyethylene glycols; polypropylene glycols; diethylene glycols; and mixtures thereof. The amount of emulsifier(s) is generally from 1% to 30% by weight relative to the total weight of the reaction mixture. The emulsifier used in this embodiment to obtain the aqueous particle dispersion is preferably chosen from polyethylene glycol ethers of fatty alcohols and mixtures thereof, and especially polyethylene glycol ethers of alcohols containing 12 or 13 carbon atoms and from 2 to 100 oxyethylene units and preferably from 3 to 50 oxyethylene units, and mixtures thereof. Examples that may be mentioned include C.sub.l2-C.sub.l3 Pareth-3 and C.sub.l2-C.sub.l3 Pareth-23, and mixtures thereof.

[0021] According to one particular embodiment, the dispersion of silicone copolymer particles is obtained from dimethylvinylsiloxypolydimethylsiloxane (or divinyl dimethicone) as compound (i), and from the compound of formula (II) preferably with n=20, as compound (ii), preferably in the presence of a catalyst of platinum type, and the particle dispersion is preferably obtained in the presence of Ci₂-Cn Pareth-3 and C₁₂-C1₃ Pareth-23 as emulsifiers. A dispersion of silicone copolymer particles that may especially be used is HMW 2220 (Dow Corning, Midland, MI) having the CTFA name; divinyl dimethicone/dimethicone copolymer/ C12-C13 Pareth-3/ C12-C13 Pareth 23), which is an aqueous 60% dispersion of divinyl dimethicone/dimethicone copolymer containing C₁₂-Cj_S Pareth-3 and Ci₂-Cn Pareth- 23, the dispersion comprising about 60% by weight of copolymer; 2.8% by weight of C12-C₁₃ Pareth-23; 2% by weight OfCi₂-Ci₃ Pareth-3; 0.31% by weight of preserving agents, the remainder to 100% being water. B) Silicone or Organic Oil Component

[0022] Component B) is a silicone or organic oil. The silicone can be any organopolysiloxane having the general formula RjSiO(₄-i)/₂ in which i has an average value of one to three and R is a monovalent organic group providing the organopolysiloxane has a kinetic viscosity that is less than one million cSt The organopolysiloxane can be cyclic, linear, branched, and mixtures thereof.

[0023] In one embodiment, component B) is a volatile methyl siloxane (VMS) which includes low molecular weight linear and cyclic volatile methyl siloxanes. Volatile methyl siloxanes conforming to the CTFA definition of cyclomethicones are considered to be within the definition of low molecular weight siloxane.

[0024] Linear VMS have the formula (CH3)3SiO{(CH3)₂SiO}fSi(CH3)₃. The value of f is

0-7. Cyclic VMS have the formula {(CH3)2SiO>_g. The value of g is 3-6. Preferably, these volatile methyl siloxanes have a molecular weight of less than 1,000; a boiling point less than 250 ⁰C; and a viscosity of 0.65 to 5.0 centistoke (mm^/s), generally not greater than 5.0 centistoke (mm^/s).

[0025] Representative linear volatile methyl siloxanes are hexamethyldisiloxane (MM) with a boiling point of 100 ⁰C₅ viscosity of 0.65 mm^/s, and formula Me3SiOSiMe3; octamethyltrisiloxane (MDM) with a boiling point of 152⁰C, viscosity of 1.04 mrn^/s, and formula Me3SiOMe2SiOSiMe3; decamethyltetrasiloxane (MD2M) with a boiling point of

194 °C, viscosity of 1.53 mm²/s, and formula Me3SiO(Me2SiO)2SiMe3; dodecamethylpentasiloxane (MD3M) with a boiling point of 229 ⁰C, viscosity of 2.06 mnvVs, and formula Me3SiO(Me2SiO)3SiMe3; tetradecamethylhexasiloxane (MD4M) with a boiling point of 245 ⁰C, viscosity of 2.63 mm^/s, and formula Me3SiO(Me2SiO)4SiMe3; and hexadecamethylheptasiloxane (MD5M) with a boiling point of 270 ⁰C, viscosity of 3.24 mm^/s, and formula Me3SiO(Me2SiO)5SiMe3.

[0026] Representative cyclic volatile methyl siloxanes are hexamethylcyclotrisiloxane (D3), a solid with a boiling point of 134 ⁰C, a molecular weight of 223, and formula {(Me2)SiO)3; octamethylcyclotetrasiloxane (D4) with a boiling point of 176 ⁰C, viscosity of 2.3 mm^/s, a molecular weight of 297, and formula {(Me2)SiO}4; decamethylcyclopentasiloxane (D5) with a boiling point of 210 °C, viscosity of 3.87 mnvVs, a molecular weight of 371, and formula {(Me2)SiO}5; and dodecamethylcyclohexasiloxane (Dg) with a boiling point of 245

⁰C, viscosity of 6.62 mm²/s, a molecular weight of 445, and formula {(Mβ2)SiO}6.

[0027] The silicone oil may also be selected from any of the volatile methyl siloxanes structures listed above where some of methyl groups are replaced with a hydrocarbon group containing 2 — 12 carbon atoms, such as ethyl or propyl groups, for example;

[(CH₃)₃SiO]₂RSiO where R is an alkyl group such as ethyl, propyl, hexyl, octyl (that is; ethyl, propyl, hexyl, octyl — heptamethyltrisiioxane, CTFA/INCI names ethyl, propyl, hexyl, and octyl trimethicone respectively).

[0028] Alternatively to volatile methyl siloxanes, the silicone oil may be selected from volatile ethyl siloxanes.

[0029] The silicone oil may also be selected from one of the following volatile methyl siloxanes VMS: TM₃ structures, such as [(CH₃)SSiO]₃SiR or

[(CH₃)₃SiO]₂RSiOSiR[OSi(CH₃)₃]2 , where R is alkyl group such as methyl, ethyl, propyl, butyl, pentyl, hexyl, or cyclohexyl; QM₄ structures, such as [(CHj)₃SiO]₄Si.

[0030] The silicone selected as component B) can be any polydiorganosiloxane fluid or mixtures thereof. If the polyorganosiloxane has a molecular weight equal to or greater than

1000, it can be blended with the volatile methyl siloxanes described above.

Component B) can also be an aminofunctional polyorganosiloxane, which is a compound having its formula selected from the group consisting of

R.²R.₂SiO(R₂ SiO)_a (R¹ RSiO)_b SiR₂ R² and

R² R₂ SiO(R₂ SiO)_a (R¹ SiO_3/2)b SiR₂ R² wherein R is a monovalent hydrocarbon radical, R¹ is an aminoalkyl group having its formula selected from the group consisting of — R³ NH₂ and — R³ NHR⁴ NH₂ wherein R³ is a divalent hydrocarbon radical having at least 3 carbon atoms and R⁴ is a divalent hydrocarbon radical having at least 2 carbon atoms, R² is selected from the group consisting of R, R¹, and —OH, a has a value of 0 to 2000, and b has a value of from greater than zero to 200. The monovalent

R radicals are exemplified by alkyl radicals such as the methyl, ethyl, propyl, butyl, amyl, and hexyl, alkenyl radicals such as the vinyl, allyl, and hexenyl, cycloalkyl radicals such as the cyclobutyl and cyclohexyl, aryl radicals such as the phenyl and naphthyl, aralkyl radicals such as the benzyl and 2-phenylethyl, alkaryl radicals such as the tolyl, and xylyl, halohydrocarbon radicals such as 3-chloropropyl. 4-bromobutyl, 3,3,3-trifluoropropyl, chlorocyclohexyl, bromophenyl, and chlorophenyl. It is preferred that R is a monovalent hydrocarbon radical having from 1 to 6 carbon atoms. Especially preferred R radicals are methyl, phenyl, and vinyl. The group R³ is preferably an alkylene radical having from 3 to 20 carbon atoms. Preferably R³ is selected from the group consisting of propylene, --CH₂ CHCH₃ — , butylene, -CH₂ CH(CH₃)CH₂ --, pentamethylene, hexamethylene, 3-ethyl- hexamethylene, octamethylene, and decamethylene. The group R⁴ is preferably an alkylene radical having from 2 to 20 carbon atoms. Preferably R⁴ is selected from the group consisting of ethylene, propylene, -CH₂ CHCH₃ --, butylene, -CH₂ CH(CH₃)CH₂ --, pentamethylene, hexamethylene, 3-ethyl-hexamethylene, octamethylene, and decamethylene. It is highly preferred in this invention that R¹ is selected from the group consisting Of-CH₂ CH₂ CH₂ NHCH₂ CH₂ NH₂ and -CH₂ CH(CH₃)CH₂ NHCH₂ CH₂ NH₂. Although the group R² can be selected from the group consisting of R, R¹, and --OH, it is preferred for purposes of this invention that R² is methyl or --OH. It is preferred that the polyorganosiloxanes have from about 0.1 to 15 molar percent of the above described amino groups and most preferably from about 0.2 to 10 molar percent of the above described amino groups. In the above formulas, preferably a has a value of from 50 to 2000, and b has a value of 1 to 100. The aminofunctional polyorganosiloxanes useful in the this invention can be prepared by procedures well known in the art. Many of these polyorganosiloxanes are available commercially.

[0031] In one embodiment, component B) can be alkylmethylsiloxane materials. These materials include solvents and waxes. The solvents can be either cyclic having a structure comprising:

[MeRSiO]_a[Me₂SiO]b or linear having a structure comprising

R'Me₂SiO(MeRSiO)_w(Me₂SiO)_xSiR'Me₂ wherein each R is independently a hydrocarbon of 6 to 30 carbon atoms, R¹ is methyl or R, a is 1-6, b is 0-5, w is 0-5 and x is 0-5, provided a + b is 3-6 and b is not 0 if R' is methyl. . These solvents may be either volatile or non-volatile and they can have a wide range of viscosities such as from about 0.65 to about 50,000 mmVs. Alkylmethylsiloxane waxes have the structure : R⁵Me₂SiO(Me₂SiCOy(MeRSiO)ZSiMe₂R' (III) wherein y is 0-100, z is 1-100, R is an alkyl group of 6-30 carbon atoms and R' is methyl or R. Preferably, the alkylmethylsiloxane has the formula :

Me₃SiO[Me₂SiOIy[MeRSiO]₂SiMe₃ (TV)

The above alkylmethylsiloxane materials are known in the art and can be produced by known methods.

[0032] Component B) may also be a silicone oil (as described above) in combination with other organopolysiloxanes, such as resins or elastomers. Silicone elastomers have been used extensively in personal care applications for their unique silky and powdery sensory profile. Most of these elastomers can gel volatile silicones fluids as well as low polarity organic solvents such as isododecane. Representative examples of such silicone elastomers are taught in US Patent 5,880,210, and US 5,760,116, both incorporated for their teaching of suitable silicone elastomer compositions that may be used as component B) in the present invention. To improve compatibilities of silicone elastomers with various personal care ingredients, alkyls, polyether, amines or other organofunctional groups have been grafted onto the silicone elastomer backbone. Representative of such organofunctional silicone elastomers are taught in US 5,811,487 , US 5,880,210 , US 6,200,581, US 5,236,986, US 6,331,604 US 6,262,170, US 6,531,540, and US 6,365,670, which are incorporated by reference for teaching of organofunctional silicone elastomers suitable as component B) in the present invention.

[00331 When component B) is an organic oil, it may be selected from any organic oil known in the art suitable for use in the preparation of personal care. Suitable organic oils include, but are not limited to, natural oils such as coconut oil; hydrocarbons such as mineral oil and hydrogenated polyisobutene; fatty alcohols such as octyldodecanol; esters such as C 12 -Cl 5 alkyl benzoate; diesters such as propylene dipelarganate; and triesters, such as glyceryl trioctanoate. The organic oil components can also be mixture of low viscosity and high viscosity oils. Suitable low viscosity oils have a viscosity of 5 to 100 mPa-s at 25°C, and are generally esters having the structure RCO-OR¹ wherein RCO represents the carboxylic acid radical and wherein OR' is an alcohol residue. Examples of these low viscosity oils include isotridecyl isononanoate, PEG-4 diheptanoate, isostearyl neopentanoate, tridecyl neopentanoate, cetyl octanoate, cetyl palmitate, cetyl ricinoleate, cetyl stearate, cetyl myristate, coco-dicaprylate/caprate, decyl isostearate, isodecyl oleate, isodecyl neopentanoate, isohexyl neopentanoate, octyl palmitate, dioctyl malate, tridecyl octanoate, myristyl myristate, octododecanol, or mixtures of octyldodecanol, acetylated lanolin alcohol, cetyl acetate, isododecanol, polyglyceryl-3-diisostearate, or mixtures thereof. The high viscosity surface oils generally have a viscosity of 200-1,000,000 mPa-s at 25°C, alternatively a viscosity of 100,000-250,000 mPa s. Surface oils include castor oil, lanolin and lanolin derivatives, triisocetyl citrate, sorbitan sesquioleate, Cl 0-18 triglycerides, caprylic/capric/triglycerides, coconut oil, corn oil, cottonseed oil, glyceryl triacetyl hydroxystearate, glyceryl triacetyl ricinoleate, glyceryl trioctanoate, hydrogenated castor oil, linseed oil, mink oil, olive oil, palm oil, illipe butter, rapeseed oil, soybean oil, sunflower seed oil, tallow, tricaprin, trihydroxystearin, triisostearin, trilaurϊn, trilinolein, trimyristin, triolein, tripalmitin, tristearin, walnut oil, wheat germ oil, cholesterol, or mixtures thereof. Mention may be made, among the optional other non-silicone fatty substances, of mineral oils, such as liquid paraffin or liquid petroleum, of animal oils, such as perhydrosqualene oil, or alternatively of vegetable oils, such as sweet almond, calophyllum, palm, castor, avocado, jojoba, olive or cereal germ oil. It is also possible to use esters of lanolic acid, of oleic acid, of lauric acid, of stearic acid or of myristic acid, for example; alcohols, such as oleyl alcohol, linoleyl or linolenyl alcohol, isostearyl alcohol or octyldodecanol; or acetylglycerides, octanoates, decanoates or ricinoleates of alcohols or of polyalcohols. It is alternatively possible to use hydrogenated oils which are solid at 25°C, such as hydrogenated castor, palm or coconut oils, or hydrogenated tallow; mono-, di-, tri- or sucroglycerides; lanolins; or fatty esters which are solid at 25°C.

[0034] The organic oil may also be a volatile organic solvent. Suitable as a volatile organic solvent component are various C8 -C20 isoparaffins such as Cl 2 isoparaffϊn made by The Permethyl Corporation having the tradename Permethyl® 99 A, or a Cl 2 isoparaffϊn (isododecane). Various Cl 6 isoparaffins commercially available, such as isohexadecane are also suitable.

[0035] The organic oil may also be an oil soluble organic sunscreen agent such as ethyhexylmethoxycinnamate, octyldimethl PABA, Octyl salicylate, on their own or in combination with other components. [0036] The weight ratio between component (A) and component (B) may vary from 4/1 to

1/5, or alternatively from 3/1 to 1/3, or alternatively from 3/1 to 1/2.

[0037] More specifically the weight ratio between the siloxane gum content of component

(A) and (B) may vary from 2.5/1 to 1/7, alternatively from 2/1 to 1/5, or alternatively from

2/1 to 1/4.

[0038] The method for combining components (A) and (B) is not critical, and typically involves common mixing techniques. Order of addition is also not critical. Typically, component (B) is added in small quantities (such as dropwise) to component (A) with constant mixing. Alternatively, components (A) and (B) are simultaneously combined and the resulting mixture is subjected to rapid stirring or shear mixing for a short time period.

(C) Personal care ingredients

[0039] The plasticized siloxane gum dispersion is then further combined with at least one (C) personal care ingredient to form a personal care composition. Typically, no special equipment or processing conditions are needed to form the personal care compositions. Depending on the type of form made, the method of preparation will be different, but such methods are well known in the art. The personal care compositions may be in the form of a cream, a gel, a powder, a paste, or a freely pourable liquid. Generally, such compositions can generally be prepared at room temperature if no solid materials at room temperature are presents in the compositions, using simple propeller mixers, Brookfϊeld counter-rotating mixers, or homogenizing mixers.

[0040] The personal care compositions may be oil-in-water and water-in-oil creams and lotions, dispersion such as rinse off and leave on hair conditioners containing from 0.5 to 90 % of the plasticized siloxane gum dispersion by weight, preferably from 1 to 50 %, more preferably from 1 to 20 % and even more preferably from 2 to 15 . It can also used in detergent systems such as shampoos and shower gels from 0.5 to 10 % by weight , preferably from 1 to 8 % and even more preferably from 2 to 5% of the composition. [0041] The personal care compositions containing the plasticized siloxane gum dispersion could be facial moisturizers, body creams and lotions, cleansing lotions, foundations, lipsticks, anti-perspirants roll on , gels, soft solids and sticks. [0042] Component (C) is independently selected from "personal care actives" and/or other ingredients known in the art as components in personal care formulations. Illustrative, non- limiting examples include; surfactants, solvents, powders, coloring agents, thickeners, waxes, stabilizing agents, pH regulators, and silicones.

Personal Care Active

[0043] As used herein, a "personal care active" means any compound or mixtures of compounds that are known in the art as additives in the personal care formulations that are typically added for the purpose of treating hair or skin to provide a cosmetic and/or aesthetic benefit Some representative examples of active ingredients, vitamins, minerals; topical antimicrobial agents, anti-acne active, astringent, deodorant, anti - dandruff, actives to control the sebum,] Useful Vitamins for use in the composition according to the invention include both fat or oil-soluble vitamins as well as water-soluble vitamins. Oil-soluble vitamins useful herein include, but are not limited to, Vitamin Aj, vitamin E, esters of vitamin E, and mixtures. Water-soluble vitamins useful herein include, but are not limited to, Vitamin C, Vitamin Bj, Vitamin B2, Vitamin Bβ, Vitamin Bj 2_> niacin, folic acid, biotin, and pantothenic acid.

[0044] Another optional ingredient of the composition according to the invention may also be a sunscreen agent. The sunscreen agent can be selected from any sunscreen agent known in the art to protect skin from the harmful effects of exposure to sunlight. The sunscreen can be an organic compound, an inorganic compound, or mixtures thereof.

Fragrances & Perfume

[0045] Another optional ingredient may also be a fragrance or perfume. The perfume can be any perfume or fragrance active ingredient commonly used in the perfume industry. These compositions typically belong to a variety of chemical classes, as varied as alcohols, aldehydes, ketones, esters, ethers, acetates, nitrites, terpenic hydrocarbons, heterocyclic nitrogen or sulfur containing compounds, as well as essential oils of natural or synthetic origin. Many of these perfume ingredients are described in detail in standard textbook references such as Perfume and Flavour Chemicals, 1969, S. Arctander, Montclair, New Jersey. Thickening aeent :

[0046] Thickening agent may be added to provide a convenient viscosity. For example, viscosities within the range of 500 to 25,000

at 25°C or more alternatively in the range of 3,000 to 7,000 mm^/s are usually suitable. Suitable thickening agents are exemplified by sodium alginate, gum arabic, polyoxyethylene, guar gum, hydroxypropyl guar gum, ethoxylated alcohols, such as laureth-4 or polyethylene glycol 400, cellulose derivatives exemplified by methylcellulose, methylhydroxypropylcellulose, hydroxypropylcellulose, polypropylhydroxyethylcellulose, starch, and starch derivatives exemplified by hydroxyethylamylose and starch amylose, locust bean gum, electrolytes exemplified by sodium chloride and ammonium chloride, and saccharides such as fructose and glucose, and derivatives of saccharides such as PEG-120 methyl glucose diolate or mixtures of 2 or more of these. Alternatively the thickening agent is selected from cellulose derivatives, saccharide derivatives, and electrolytes, or from a combination of two or more of the above thickening agents exemplified by a combination of a cellulose derivative and any electrolyte, and a starch derivative and any electrolyte. The thickening agent, where used is present in the shampoo compositions of this invention in an amount sufficient to provide a viscosity in the final shampoo composition of from 500 to 25,000 mm^/s. Alternatively the thickening agent is present in an amount from about 0.05 to 10 wt% and alternatively 0.05 to 5 wt% based on the total weight of the composition. Stabilizing agent :

[0047] Stabilizing agents can be used in the water phase of the compositions. Suitable water phase stabilizing agents can include alone or in combination one or more electrolytes, polyols, alcohols such as ethyl alcohol, and hydrocolloids. Typical electrolytes are alkali metal salts and alkaline earth salts, especially the chloride, borate, citrate, and sulfate salts of sodium, potassium, calcium and magnesium, as well as aluminum chlorohydrate, and polyelectrolytes, especially hyaluronic acid and sodium hyaluronate. When the stabilizing agent is, or includes, an electrolyte, it amounts to about 0.1 to 5 wt % and more alternatively 0.5 to 3 wt % of the total composition. The hydrocolloids include gums, such as Xantham gum or Veegum and thickening agents, such as carboxymethyl cellulose. Polyols, such as glycerine, glycols, and sorbitols can also be used. Alternative polyols are glycerine, propylene glycol, sorbitol and butylene glycol. If a large amount of a polyol is used, one need not add the electrolyte. However, it is typical to use a combination of an electrolyte, a polyol and an hydrocolloid to stabilize the water phase, e.g. magnesium sulfate, butylene glycol and Xantham gum.

Other additives

[00481 Other additives can include powders and pigments especially when the composition according to the invention is intended to be used for make-up. The powder component of the invention can be generally defined as dry, particulate matter having a particle size of 0.02-50 microns. The particulate matter may be colored or non-colored (for example white). Suitable powders include but not limited to bismuth oxychloride, titanated mica, fumed silica, spherical silica beads, polymethylmethacrylate beads, , boron nitride, aluminum silicate, aluminum starch octenylsuccinate, bentonite, kaolin, magnesium aluminum silicate, silica, talc, mica, titanium dioxide, kaolin, nylon, silk powder. The above mentioned powders may be surface treated to render the particles hydrophobic in nature.

[0049] The powder component also comprises various organic and inorganic pigments. The organic pigments are generally various aromatic types including azo, indigoid, triphenylmethane, anthraquinone, and xanthine dyes which are designated as D&C and FD&C blues, browns, greens, oranges, reds, yellows, etc. Inorganic pigments generally consist of insoluble metallic salts of certified color additives, referred to as the Lakes or iron oxides. A pulverulent colouring agent, such as carbon black, chromium or iron oxides, ultramarines, manganese pyrophosphate, iron blue, and titanium dioxide, pearlescent agents, generally used as a mixture with coloured pigments, or some organic dyes, generally used as a mixture with coloured pigments and commonly used in the cosmetics industry, can be added to the composition, hi general, these coulouring agents can be present in an amount by weight from 0 to 20% with respect to the weight of the final composition. Pulverulent inorganic or organic fillers can also be added, generally in an amount by weight from 0 to 40% with respect to the weight of the final composition. These pulverulent fillers can be chosen from talc, micas, kaolin, zinc or titanium oxides, calcium or magnesium carbonates, silica, spherical titanium dioxide, glass or ceramic beads, metal soaps derived from carboxylic acids having 8-22 carbon atoms, non-expanded synthetic polymer powders, expanded powders and powders from natural organic compounds, such as cereal starches, which may or may not be crosslinked, copolymer microspheres such as EXPANCEL (Nobel Industrie), polytrap and silicone resin microbeads (TOSPEARL from Toshiba, for example). [0050] The waxes or wax-like materials useful in the composition according of the invention have generally have a melting point range of 35 tol20°C at atmospheric pressure. Waxes in this category include synthetic wax, ceresin, paraffin, ozokerite, beeswax, carnauba, microcrystalline, lanolin, lanolin derivatives, candelilla, cocoa butter, shellac wax, spermaceti, bran wax, capok wax, sugar cane wax, montan wax, whale wax, bayberry wax, or mixtures thereof. Mention may be made, among the waxes capable of being used as non- silicone fatty substances, of animal waxes, such as beeswax; vegetable waxes, such as carnauba, candelilla wax ; mineral waxes, for example paraffin or lignite wax or microcrystalline waxes or ozokerites; synthetic waxes, including polyethylene waxes, and waxes obtained by the Fischer-Tropsch synthesis. Mention may be made, among the silicone waxes, of polymethylsiloxane alkyls, alkoxys and/or esters.

Silicones

[0051] Such optional components include other silicones (including any already described above), organofunctional siloxanes, alkylmethylsiloxanes, siloxane resins and silicone gums. Silicone gums may be included in the present compositions in addition to the plasticized high molecular weight siloxane gum dispersion. Polydiorganosiloxane gums are known in the art and are available commercially. They consist of generally insoluble polydiorganosiloxanes having a viscosity in excess of 1,000,000 centistoke (mm^/s) at 25 ⁰C, alternatively greater than 5,000,000 centistoke (mra^/s) at 25 ⁰C. These silicone gums are typically sold as compositions already dispersed in a suitable solvent to facilitate their handling. Ultra-high viscosity silicones can also be included as optional ingredients. These ultra-high viscosity silicones typically have a kinematic viscosity greater than 5 million centistoke (mm^/s) at 25 ⁰C, to about 20 million centistoke (mm^/s) at 25 ⁰C. Compositions of this type in the form of suspensions are most preferred, and are described for example in US Patent 6.013,682 (January 11, 2000).

[0052] Silicone resins may be included in the present compositions. These resin compositions are generally highly crosslinked polymeric siloxanes. Crosslinking is obtained by incorporating trifunctional and/or tetrafunctional silanes with the monofunctional silane and/or difunctional silane monomers used during manufacture. The degree of crosslinking required to obtain a suitable silicone resin will vary according to the specifics of the silane monomer units incorporated during manufacture of the silicone resin. In general, any silicone having a sufficient level of trifunctional and tetrafunctional siloxane monomer units, and hence possessing sufficient levels of crosslinking to dry down to a rigid or a hard film can be considered to be suitable for use as the silicone resin. Commercially available silicone resins suitable for applications herein are generally supplied in an unhardened form in low viscosity volatile or nonvolatile silicone fluids. The silicone resins should be incorporated into compositions of the invention in their non-hardened forms rather than as hardened resinous structures.

[00531 Silicone acrylates may be included in the present compositions. Representative examples are described in EP 0963751 (Dow Corning Toray Silicone Company, Ltd). [0054] Silicone carbinol Fluids may be included in the present compositions. These materials are described in WO 03/101412 A2, and can be commonly described as substituted hydrocarbyl functional siloxane fluids or resins.

[0055] Water soluble or water dispersible silicone polyether compositions may be included in the present compositions: These are also known as polyalkylene oxide silicone copolymers, silicone poly(oxyalkylene) copolymers, silicone glycol copolymers, or silicone surfactants. These can be linear rake or graft type materials, or ABA and ABn types where the B is the siloxane polymer block, and the A is the poly(oxyalkylene) group. The poly(oxyalkylene) group can consist of polyethylene oxide, polypropylene oxide, or mixed polyethylene oxide/polypropylene oxide groups. Other oxides, such as butylene oxide or phenylene oxide are also possible.

[0056] Compositions according to the invention can be used in w/o, w/s, or multiple phase emulsions using silicone emulsifiers. Typically the water-in-silicone emulsifier in such formulation is non-ionic and is selected from polyoxyalkylene-substituted silicones, silicone alkanolamides, silicone esters and silicone glycosides. Suitable silicone-based surfactants are well known in the art, and have been described for example in US 4,122,029 (Gee et al.), US 5,387,417 (Rentsch), and US 5,811,487 (Schulz et al).

[0057] When the composition according to the invention is an oil-in-water emulsion, it will include common ingredients generally used for preparing emulsions such as but not limited to non ionic surfactants well known in the art to prepare o/w emulsions . Examples of nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenol ethers, polyoxyethylene lauryl ethers, polyoxyethylene sorbitan monoleates, polyoxyethylene alkyl esters, polyoxyethylene sorbitan alkyl esters, polyethylene glycol, polypropylene glycol, diethylene glycol, ethoxylated trimethylnonanols, and polyoxyalkylene glycol modified polysiloxane surfactants.

[0058] The aqueous component of such emulsions optionally contains one or more water- soluble emollients including, but not limited to, lower molecular weight aliphatic diols such as propylene glycol and butylene glycol; polyols such as glycerine and sorbitol; and polyoxyethylene polymers such as polyethylene glycol 200. The specific type and amount of water soluble ernollient(s) employed will vary depending on the desired aesthetic characteristics of the composition, and is readily determined by one skilled in the art.

[0059] When the composition according to the invention is a detergent system such as a shampoo or shower gel, it will include common ingredients generally used for preparing this detergent systems, at least one anionic detersive surfactant. This can be any of the well- known anionic detersive surfactants typically used in shampoo formulations. These anionic detersive surfactants function as cleansing agents and foaming agents in the shampoo compositions of this invention. The anionic detersive surfactants are exemplified by alkali metal sulforicinates, sulfonated products of fatty acids nitriles such as palmitonitrile sulfonate, alkali metal alkyl sulfates such as sodium lauryl sulfate, ammonium lauryl sulfate or Methanol amine lauryl sulfate, ether sulfates having alkyl groups of 8 or more carbon atoms such as sodium lauryl ether sulfate, ammonium lauryl ether sulfate, sodium alkyl aryl ether sulfates, and ammonium alkyl aryl ether sulfates,. Preferably the detersive surfactant is selected from the group consisting of sodium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium lauryl ether sulfate, and ammonium lauryl ether sulfate. The anionic detersive surfactant is present in the shampoo compositions of this invention in an amount from about 5 to 50 wt% and preferably about 5 to 25 wt% based on the total weight of the composition.

DEPOSITION AGENTS

[0060] Deposition agents, preferably cationic deposition polymer, may be added. The cationic deposition aid will generally be present at levels of from 0.001 to 5%, preferably from about 0.01 to 1%, more preferably from about 0.02% to about 0.5% by weight. The polymer may be a homopolymer or be formed from two or more types of monomers. The molecular weight of the polymer will generally be between 5 000 and 10 000 000, typically at least 10 000 and preferably in the range 100 000 to about 2 000000. The polymers will have cationic nitrogen containing groups such as quaternary ammonium or protonated amino groups, or a mixture thereof. Such polymers are described in the CTFA Cosmetic Ingredient Directory, 3rd edition. The cationic amines can be primary, secondary or tertiary amines, depending upon the particular species and the pH of the composition. In general secondary and tertiary amines, especially tertiary, a-re preferred. The cationic deposition aids can comprise mixtures of monomer units derived from amine- and/or quaternary ammonium- substituted monomer and/or compatible spacer monomers. Suitable cationic deposition aids include, for example: copolymers of 1 -vinyl -2-pyrrolidine and l-vinyl-3-methylimidazolium salt (e.g., Chloride salt) (referred to in the industry by the Cosmetic, Toiletry, and Fragrance Association, "CTFA". as Polyquaternium-16) such as those commercially available from BASF Wyandotte Corp. (Parsϊppany, NJ, USA) under the LUVIQUAT tradename (e.g., LUVIQUAT FC 370); copolymers of 1 -vinyl -2-pyrrolidine and dimethylaminoethyl methacrylate (referred to in the industry by CTFA as Polyquaternium-11) such as those commercially from Gar Corporation (Wayne, NJ, USA) under the GAFQUAT tradename (e.g., GAFQUAT 755N); cationic diallyl quaternary ammonium-containing polymer including, for example, dimethyldiallyammonium chloride homopolymer and copolymers of acrylamide and dimethyldiallyammonium chloride, referred to in the industry (CTFA) as Polyquaternium 6 and Polyquaternium 7, respectively; mineral acid salts of aminoalkyl esters of homo-and co-polymers of unsaturated carboxylic acids having from 3 to 5 carbon atoms, as described in U.S. Patent 4,009,256; and cationic polyacrylamides as described in our copending UK Application No. 9403156.4 (W095/22311). Other cationic deposition aids that can be used include polysaccharide polymers, such as cationic cellulose derivatives and cationic starch derivatives. Cationic cellulose is available from Amerchol Corp. (Edison, NJ, USA) in their Polymer iR (trade mark) and LR (trade mark) series of polymers, as salts of hydroxyethyl cellulose reacted with trimethyl ammonium substituted epoxide, referred to in the industry (CTFA) as Polyquaternium 10. Another type of cationic cellulose includes the polymeric quaternary ammonium salts of hydroxyethyl cellulose reacted with lauryl dimethyl ammonium-substituted epoxide, referred to in the industry (CTFA) as Polyquaternium 24. These materials are available from Amerchol Corp. (Edison, NJ, USA) under the tradename Polymer LM-200. Other cationic deposition aids that can be used include cationic guar gum derivatives, such as guar hydroxypropyltrimonium chloride (Commercially available from Celanese Coφ. in their Jaguar trademark series). Other materials include quaternary nitrogen- containing cellulose ethers (e.g., as described in U.S. Patent 3,962,418, incorporated by reference herein), and copolymers of etherified cellulose and starch (e.g., as described in U.S. Patent 3,958,581, incorporated by reference herein).

FOAMBOOSTER

[0061] A foam booster is an agent which increases the amount of foam available from a system at a constant molar concentration of surfactant, in contrast to a foam stabilizer which delays the collapse of a foam. Foam building is provided by adding to the aqueous media, a foam boosting effective amount of a foam boosting. The foam boosting agent is preferably selected from the group consisting of fatty acid alkanolamides and amine oxides. Preferably a foam booster is selected from the group consisting of lauric acid diethanolamide, N-lauryl dimethylamine oxide, coconut acid diethanolamide, myristic acid diethanolamide, and oleic acid diethanolamide. The foam boosting agent is preferably present in the shampoo compositions of this invention in an amount from about 1 to 15 wt% and more preferably about 2 to 10 wt% based on the total weight of the composition. The composition may further comprise a polyalkylene glycol to improve lather performance. Concentration of the polyalkylene glycol in the shampoo composition may range from about 0.01% to about 5%, preferably from about 0.05% to about 3%, and more preferably from about 0. 1% to about 2%, by weight of the composition.

[0062] The composition according to the invention can also be under the form of aerosols in combination with propellant gases, such as carbon dioxide, nitrogen, nitrous oxide, volatile hydrocarbons such as butane, isobutane, or propane and chlorinated or fluorinated hydrocarbons such as dichlorodifluoromethane and dichlorotetrafluoroethane or dimethylether.

[0063] The composition according to the invention can also be delivered from a wipe support.

[0064] Plasticized high molecular weight silicone gum dispersion according to the invention can also be used in anti-perspϊrant and deodorant compositions under but not limited to the form of sticks, soft solid, roll on, aerosol, and pumpsprays. Some examples of antiperspirant agents and deodorant agents are Aluminum Chloride, Aluminum Zirconium Tetrachlorohydrex GLY, Aluminum Zirconium Tetrachlorohydrex PEG, Aluminum Chlorohydrex, Aluminum Zirconium Tetrachlorohydrex PG, Aluminum Chlorohydrex PEG, Aluminum Zirconium Trichlorohydrate, Aluminum Chlorohydrex PG, Aluminum Zirconium Trichlorohydrex GLY, Hexachlorophene, , Benzalkonium Chloride, , Aluminum Sesquichlorohydrate, Sodium Bicarbonate, Aluminum Sesquichlorohydrex PEG, ,Chloroρhyllin-Copper Complex, Triclosan, Aluminum Zirconium Octachlorohydrate, and Zinc Ricinoleate.

[0065] The compositions according to this invention can be used by the standard methods, such as applying them to the human body, e.g. skin or hair, using applicators, brushes, applying by hand, pouring them and/or possibly rubbing or massaging the composition onto or into the body. Removal methods, for example for colour cosmetics are also well known standard methods, including washing, wiping, peeling and the like. For use on the skin, the compositions according to the present invention may be used in a conventional manner for example for conditioning the skin. An effective amount of the composition for the purpose is applied to the skin. Such effective amounts generally range from about lmg/cm^ to about 3 mg/cm^. Application to the skin typically includes working the composition into the skin. This method for applying to the skin comprises the steps of contacting the skin with the composition in an effective amount and then rubbing the composition into the skin. These steps can be repeated as many times as desired to achieve the desired benefit. The use of the compositions according to the invention on hair may use a conventional manner for conditioning hair. An effective amount of the composition for conditioning hair is applied to the hair. Such effective amounts generally range from about Ig to about 50g, preferably from about Ig to about 2Og. Application to the hair typically includes working the composition through the hair such that most or all of the hair is contacted with the composition. This method for conditioning the hair comprises the steps of applying an effective amount of the hair care composition to the hair, and then working the composition through the hair. These steps can be repeated as many times as desired to achieve the desired conditioning benefit. When a high silicone content is incorporated in a hair care composition according to the invention, this may be a useful material for split end hair products. The compositions according to this invention can be used on the skin of humans or animals for example to moisturize, color or generally improve the appearance or to apply actives, such as sunscreens, deodorants, insect repellents etc. Examples

[0066] These examples are intended to illustrate the invention to one of ordinary skill in the art and should not be interpreted as limiting the scope of the invention set forth in the claims. Example 1 :

Table 1 and 2 demonstrating the broad range of silicone and organic oils that can be post added on the high molecular weight silicone gum dispersion and the impact on the emulsion particle size. The starting high molecular weight silicone gum dispersion is the commercial material under the name Dow Corning® HMW 2220 emulsion from Dow Corning. This same starting material will used in all the examples.

Table 1

Table 2

Maximum absorption of hydrophobic materials on 5 g of Dow Corning® HMW 2220 non- ionic emulsion;

Example 2:

Plasticized DC2220 can be widely used into normal skin care formulation. Due to the plasticizaion of the silicone gum present into DC2220 dispersion via the post addition of different fluids, the addition level can be higher without any balling effect during rub out. The addition of the plasticized emulsion is simple and convenient — Addition is completed under gentle mixing after the formulation emulsification step when temperature is lower than 45c degree when heating is a required step . Formulations 1 and 2 are illustrating this process. Phase A in the formulation 1 below describes the composition of plasticized DC2220 FORMULATION 1

Ingredient lϋxiei Trade Name / Supplier

Phase Λ

Divinyldimethϊcone /Dimethicone 3.0 Dow Corning® HMW 2220 Non-Ionic

Copolymer and C12-C13 Emulsion / Dow Corning Pareth-3 /C12-C13 Pareth-23

Polyphenylmethylsiloxane 2.0 Dow Corning® 556 //Dow Corning

Dimethicone 1.2 Dow Corning® 200(5cst)/ /Sow Corning

Phase B

Polyacrylamide & Cl 3-14 1.0 Sepigel 305 / Seppic Isoparaffin & Laureth-7

Caprylic / Capric Triglyeride 5.0 Myritol 318 /Henkel

C12-15 Alkyl Benzoate 2.0 Crodamol AB / Croda

Squalane 3.0 Squalane /B&J

Water 30.0 Water (Dist.) Phase C

Water 30.0 Water (Dist.)

Acrylates Copolymer 3.0 Aculyπ33 Polymer / Rohm and Hass

Triethanolamine 0.3 TEA/ Local

Phase D

Propylene Glycol & Diazolidinyl 0.5 Liquid Germall Plus / ISP Urea and Iodopropynyl Butylcarbamate

Glycerin 5.0 Local

TEA 0.6 TEA /Local

Rose W0410496 0.3 Fragrance / Mane

Water Up to 100

PROCEDURE

1. Mix DC22220 with low speed and add DC556 & DC200 drop by drop (Phase A).

2. Mix ingredients of water phase (B) until homogenous

3. Mixing phase C until homogenous.

4. Add phase A, B and C, mixing until homogeneous.

5. Add phase D ingredients with gentle mixing.

Procedure:

1. Mix Phase A & B ingredients and heat to 75 oC.

2. Add phase B into Phase A and homogenize at 3000 rpm for 3 minutes.

3. Prepare phase C by adding DC 225 and 245 into DC 2220 drop by drop under mixing.

4. When temperature is cooled down to 40 oC, add phase C into A+B under mixing.

5. Add phase D under mixing. Both emulsions does not present any balling effect when rub on the skin compared to the same emulsions containing 5 % of non plasticized DC 2220.

Example 3:

Example 4:

Example 5:

Example 6:

Example 7:

Example 8

The following shower gel formulations were made and tested for sensory benefits :

PROCEDURE

1. Separately, mix phase A and phase B ingredients until uniforn.

2. Add phase A to phase B and mix until uniform.

3. Prepare phase C by adding, drop by drop, the 200 fluid onto the DC 2220 with gentle mixing in case of formulation 2

4. Add Phase C to A+B under mixing.

5. Add phase D ingredients one by one. Shower gel sensory evaluation method:

Protocol:

Number of panelists: 6

1. Wet the hands for 5 sec with tab water 37°c

2. Apply 3 ml of the product with a syringe in the hands

3. Wash the hands during 20 seconds and evaluate foam generation, quality and quantity

4. Rinse for 20 sec under tab water 37°c

5. Evaluate the wet feel

6. Dry the hand and wait for 2 min

7. Evalute the dry feel

Sensory Questionnaire

Part 1. During washing

1. Speed of Lathering Slowly 1 2 3 4 5 Quickly

2. Amount of Lather Low 1 2 3 4 5 A lot

3. Creaminess of the foam No creaminess 1 2 3 4 5 Creaminess

4. Easy to Rinse Not Easy 1 2 3 4 5 Easy Part 2. After rinse

1. Wet feel Not Slippery 1 2 3 4 5 Slippery

2. Amount of Residue Low 1 2 3 4 5 A Lot Part 3. After drying 1. Smoothness Rough/drag 1 2 3 4 5 Smooth/silky

Formulation 1 and 2 were compared to each other by 6 experienced panelists using paired comparison. The following graph illustrates the results.

Formulation 2 with the plasticized DC2220 gives improved wet sensory feel and dry smooth skin feel vs. formulation 1 containing pure DC2220.The addition of the fluid has a slight negative impact on the amount of lather but improves the creaminess.

Example 9: Performance of Plasticized DC2220 into Shampoos formulations containing 0.2 % of Guar Gum.

Base Shampoo formulation with 0.2% Guar Gum

Part A

Ammonium Laureth Sulfate (28%) 30.0 Texapon ALES 3-28/Coπgnis o

Ammonium Lauryl Sulfate (28%) 25.0 Texapon ALS 28 /Congnis 0

Cocamidopropyl betaine 5.00 Dehyton K/Cognis

Cocamide monoethanolamide 1.0 Comperlan 100/Cognis

EDTA Disodium 0.1

Carbomer 0.2 Carbopol 940/Noveon

Guar hydroxypropyltrimonium 0.2 N-Hance 3196 /Aqualon chloride

Deionized water To

90

Part B

Glycol Distearate(and) sodium 3.0 Euperlan PK 771/Cognis laureth sulfate (and) Cocamide

MEA(and) Laureth- 10

TEA 0.2

Preservative 0.5 Glydant Plus/lonza

Perfume 0.5 Quest Test methods'. a) Dry hair combing test methods :

Materials and Apparatus

- Combing machine, made by Jau Chyuan Machinery Corp.

- 6g/25cm hair switches, made from Asian hair premixed by International Hair and Products Inc.

- Horizontal bar with clips for suspending hair switches

- Comb: 96mm width, 13mm depth and lmm teeth clearance.

- Computer

- Work sheet procedure

- First wash all the hair switches according to the following procedure: a. Wet hair switches under 40 degree C tap water for 15 seconds. b. Apply 1.0 g of 9% Sodium Lauryl Sulfate (active) and stroke through switch for 30 seconds. c. Rinse switch under the running water for 30 seconds. d. Hang switch on clip and dry overnight. e. Comb through switch three times with narrow teeth.

Measure the hair switches with the combing machine: a. Turn on the switch of the combing machine and computer b. Put 3 combs on the comb shelf, clip the hair switch, put another 3 combs on the comb shelf c. set the run length : 25 cm, run speed: 5 cm/s, value range : 0 — 400 g d. zero the value e. Put the start on the computer screen to comb the hair, repeat 12 times. f. after finish the combing, remove the comb and hair switch h. use software reporting function to calculate average and standard deviation by selecting the displacement interval 3 to 11 cm.

Hair switch treatment with the product to be evaluated. a. Choose the similar dry combing force hair switches b. Wet each switch for 15 sec with tap water at 40⁰C c. Apply 0.4 g of shampoo per gram of switch and stroke through switch for 30 sec d. Rinse switch for 30 seconds under tap water at 40°C e. Hang switch on clip and dry overnight. f. Comb through switch three times with narrow teeth. g. Combing the hair switches according to procedure above

B) Evaluation of the hair wet feel.

Paired comparison test performed on the same type of switch than the one used for the dry combing test. Experienced panelists are asked to compare 2 wet hair switch under running tab water for the wet feel . Result 1: To demonstrate the improved performance of adding plasticized MSP versus the individual ingredients into the shampoo base formulation containing 0.2 % of guar gum. Test method : Dry combing test. Table 1: Com osition of the Plasticized MSP;

Table 2: Formulation com ositions

The combing force reduction with the plasticized DC 2220 is greater when compared to the shampoo with the ingredients added separately, especially for the DC 2220 plasticized with only DC 8566 (59 % reduction versus 34 %, difference at 95 % confidence level.). Result two: To demonstrate the impact of different fluids on the performance of plasticized

DC 2220 in the shampoo base containing 0.2 % guar gum.

Tests methods: Dry combing test and wet feel sensory test.

Different plasticized MSP:

Gum /fluid ratio: 2/1

Fluids evaluated: Table 3

Addition level into the base shampoo: 2.9 % ( corresponding to 2 % of silicone active. Dry combing test results

DC245 DC8566 DC200/350cst DC200/10Mcst

Wet feel sensory results

. Both dry combing machine test result and wet sensory evaluation result are both demonstrating that shampoos containing plasticized 2220 with Cyclopentasiloxane and amodimethicone has better performance that the shampoo containing DC 2220 plasticised with dimethicone with medium to high viscosity.

Result 3: To compare the performance of the plasticized MSP in shampoos with commercially available emulsions in the shampoo base containing 0.2 % of gum and a commercial shampoo

Tests methods: Dry combing test and wet feel sensory test.

Different plasticized MSP: Gum / fluid ratio: 2/1 . Fluid part: 2 parts of DC 8566 (amodimethicone ) and 1 part of DC

245 (Cyclopentasiloxane).

* Note: Plasticized lOOg DC2220 emulsion with 20g DC8566 and 1Og DC245 fluid by post adding under mixing

The silicone additive level is 4% active. Comparison with a commercial leading brand shampoo was carried out as well.

Table 4: Shampoo formulations :

Commercial Leading Brand DC7137&DC8194 Plasticized DC2220

The result showed that plasticized DC2220 containing shampoo is 95% significantly better than combination of DC7137&DC8194 containing shampoo for dry combing and very close to the performance of the commercial leading brand shampoo. On wet sensory evaluation, the plasticized DC2220 containing shampoo has also better performance than the combination of DC7137 & Dc8194 containing shampoo but is slightly less performant than the commercial leading brand shampoo.

Example 10: Performance of Plasticized DC2220 into Shampoos formulations containing 0.2 % of PoIyquuternium-10 ( PQ-10 ).

Base Shampoo formulation with 0.2% PQ-IO: FORMULATION

Ingredient Wt Trade Name / Su

%

Part A

Ammonium Laureth Sulfate (28%) 30.0 Texapon ALES 3-28/Cognis 0

Ammonium Lauryl Sulfate (28%) 25.0 Texapon ALS 28 /Cognis o

Cocamidopropyl betaine 5.00 Dehyton K/Cognis

Cocamide monoethanolamide 1.0 Comperlan 100/Cognis EDTA Disodium 0.1

Carbomer 0.2 Carbopol 940/Noveon

Polyquatermiu m-.10 0.2 JJR400 / Amerchol

Deionized water To 95

Part B

Glycol Distearate(and) sodium 3.0 Euperlan PK 771/Cognis laureth sulfate (and) Cocamide MEA(and) Laureth- 10

TEA 0.2

Preservative 0.5 Glydant Plus/lonza

Perfume 0.5 Quest

Result: To compare the performance of the plasticized MSP with phenyl functional fluids in shampoos with shampoo containing the same ingredients added separately, this in the shampoo base containing 0.2 % of PQ-IO

Tests methods: Dry combing test (see example 4).

Plasticized MSP with Dow Corning® 556 (INCI name: Phenyltrimethicone )

Gum / fluid ratio: 2/1). * Note: Plasticized lOOg DC2220 emulsion with 30g DC 556 fluid by post adding under mixing

The silicone additive level is 2% active

Shampoo formulations

Procedures:

Formulation 1: add 2.2 % (1.3 % gum) of DC2220 fluid and 0.7% DC556 fluid step by step into base shampoo formulation.

Formulaion : Add 2.2 % (1.3% gum) of D C2220 into base shampoo formulation

Formulation 3: Add 2.9 % (1.3% gum and 0.7% of DC556) plasticized DC 2220 into the base formulation.

The result showed that in this particular example, there is no significant difference in dry combing performance between the shampoo containing the plasticized DC 2220 with DC 556 and the shampoo where the ingredients have been added separately. However, both shampoos performed better to the one containing only the DC 2220. This example further demonstrates that the choice of the type of fluid for the plasticization is very important in order to get the optimized performance of the plasticized DC 2220.

Example 11:

Example 12:

Rinse off conditioner formulation

PROCEDURE

1. Heat Phase A together to 85c degree and keep on mixing while cooling

2. Prepare phase B by adding, drop by drop, the 8566 and 245 fluid onto the DC 2220 with gentle mixing.

3. Mix phase C ingredients together and add to phase B

4. Add slowly phase B + C into phase A under mixing.

Claims

Claims

1. A process to prepare a personal care composition containing a siloxane gum comprising;

I) combining

A) an aqueous suspension of a siloxane gum,

B) a silicone or organic oil, to form a plasticized siloxane gum dispersion,

II) combining the plasticized siloxane gum dispersion with

C) a personal care ingredient to form the personal care composition.

2. The process of claim 1 wherein the weight ratio of A)/B) is from 4/1 to 1/5.

3. The process of claim 1 wherein the siloxane gum is a silicone copolymer obtained by reacting:

(a) a polysiloxane (i) having at least one reactive group; and

(b) an organosilicon compound (ii) that reacts with the polysiloxane (i) via a chain-extension reaction.

4. The personal care composition prepared according to the process of any of claims 1 — 3,

5. A method to improve the hair or skin conditioning benefit of a personal care composition containing a siloxane gum comprising applying to hair or skin the personal care composition of claim 4.

6. A process for improving the application to skin or hair of a personal care composition containing a siloxane gum comprising;

I) combining

A) an aqueous suspension of a siloxane gum,

B) a silicone or organic oil, to form a plasticized siloxane gum dispersion,

II) combining the plasticized siloxane gum dispersion with

C) a personal care ingredient to form the personal care composition,

III) applying the personal care composition to hair or skin.