United States Patent [19J
`Reid et al.
`
`[54] CONDITIONil"G SHAMPOO COMPRISING
`A SURFACI'Al'.~, A NON-VOLATILE
`SILICONE OIL AND GUAR
`HYDROXYPROPYLTRIMONIUM
`CHLORIDE AS A CATIONIC
`CONDITIONING POLYMER
`
`[75]
`
`Inventors: Euan S. Reid, Bebington; Andrew M.
`Murray, Parkgate, both of Great
`Britain
`
`[73] Assignee: Cbesebrough-Pond's USA Co.,
`Greenwich, Conn.
`
`[21) Appl. No.: 621,482
`
`[22] Filed:
`
`Dec. 3, 1990
`
`Foreign Application Priority Data
`[30]
`Dec. 4, 1989 [GB] United Kingdom .............. 8927385.8
`Jul. 23, 1990 [GB] United Kingdom .............. 9016101.9
`
`Int. CI.s .......................... A61K 7/06; A61K 7!75
`[51]
`[52] U.S. CI. ...................................... 424170; 424/496;
`424/500; 514/881; 514/937; 514/938
`[58] Field of Search .................. 424170; 514/881, 941,
`514/942, 937
`
`l~l~llllllllllllllllllillillllllilllllllllillllillll!llllillllllli,ill
`US005085857A
`5,085,857
`[11] Patent Number:
`[45] Date of Patent:
`Feb. 4, 1992
`
`[56]
`
`References Cited
`U.S. PATENT DOCUMENTS
`4,364,837 12/1982 Pader .................................. 252/173
`4,559,227 12/1985 Chandra eta!. ...................... 424/78
`4,741,855 5/1988 Grote eta!. .................... 252/174.15
`4,874,547 10/1989 Narula ................................. 514/941
`4,933,176 6/1990 Van Reeth .......................... 514/788
`
`FOREIGN PATENT DOCUMENTS
`0018717 11/1980 European Pat. Off ..
`0035899 9/1981 European Pat. Off ..
`
`OTHER PUBLICATIONS
`Hunting's "Encyclopaedia of Conditioning Rinse Ingre·
`dients", pp. 46-47.
`Primary Examiner-Thurman K. Page
`Assistant Examiner-David Colucci
`Attorney, Agent, or Firm-Honig, Milton L.
`[57]
`ABSTRACI'
`A shampoo composition contains surfactant together
`with a cationic derivative of guar gum and an insoluble
`non-volatile silicone present as emulsified particles hav(cid:173)
`ing average particle size below 2!J-m. The silicone is
`preferably incorporated as a pre-formed emulsion.
`
`10 Claims, No Drawings
`
`1
`
`

`

`1
`
`5,085,857
`
`CONDITIONING SHAMPOO COMPRISING A
`SURFACfAl\'T, A NO!'<-VOLATILE SILICONE OIL
`AND GUAR HYDROXYPROPYLTRIMONIUM
`CHLORIDE AS A CATIONIC CONDITIONING
`POLYMER
`
`5
`
`2
`(a) from 2 to 40o/c by weight of surfactant chosen from
`anionic, nonionic or amphoteric surfactants or mix(cid:173)
`tures thereof;
`(b) from 0.01 to 3% by weight of cationic conditioning
`polymer which is a cationic derivative of guar gum;
`(c) from 0.01 to 10% by weight of an insoluble, non(cid:173)
`volatile silicone, present as emulsified particles with
`an average particle size of Jess than 2 ~J-m.
`In another aspect, this invention provides a method of
`making such a shampoo composition, by mixing to(cid:173)
`gether water, the surfactant, the cationic conditioning
`polymer and an aqueous emulsion of the silicone,
`wherein the silicone in the emulsion has an average
`particle size of less than 2 ~J-m.
`
`BACKGROUND OF THE INVENTION
`The present invention relates to shampoo composi- 10
`tions, and more particularly to shampoo compositions
`containing non-volatile silicone materials which condi(cid:173)
`tion the hair leaving it softer and more manageable.
`When washing the hair with conventional shampoo
`compositions, the natural oils are removed together 15
`with the dirt and unwanted oils. When too much of the
`DETAILED DESCRIPTION OF THE
`natural oil is removed, for example by especially fre(cid:173)
`INVENTION
`quent washing, the hair becomes less easy to comb or
`(a) Surfactant
`style, and subject to static build-up causing "flyaway".
`The composition according to the invention com-
`Hair conditioners have been developed to try to re- 20
`prises a surfactant chosen from anionic, nonionic or
`store the condition of the hair. These compositions are
`amphoteric surfactant or mixtures thereof.
`normally applied to hair after shampooing, left on the
`Suitable anionic surfactants are the alkyl sulphates,
`hair for a period of time and rinsed off. This process is
`time consuming and expensive since two separate prod-
`alkyl ether sulphates, alkaryl sulphonates, alkyl succi-
`25 nates, alkyl sulphosuccinates, N-alkoyl sarcosinates,
`ucts are needed.
`alkyl phosphates, alkyl ether phosphates, alkyl ether
`Conditioning shampoos containing cationic condi-
`tioning agents have been disclosed for example in EP 18
`carboxylates, and alpha-olefin sulphonates, especially
`their sodium, magnesium, ammonium and mono-, di-
`717 (Unilever). These cationic agents confer some con-
`and triethanolamine salts. The alkyl groups generally
`ditioning benefit on the hair, but are often thought to
`leave a residue on the hair, which may cause dulling on 30 containing from 8 to 18 carbon atoms and may be unsat-
`hair after drying.
`urated. The alkyl ether sulphates, alkyl ether phos-
`Non-volatile silicone oils are useful as conditioning
`phates and alkyl ether carboxylates may contain from
`agents, but again excessive amounts of silicone can dull
`one to 10 ethylene oxide or propylene oxide units per
`the hair, and build-up of silicone on the hair can give a
`molecule, and preferably contain 2 to 3 ethylene oxide
`greasy appearance. Furthermore, the incorporation of 35
`units per molecule.
`silicone oil generally gives an antifoam effect.
`Examples of suitable anionic surfactants include so-
`Hair conditioning emulsions are disclosed in EP 35
`dium oleyl succinate, ammonium Iaury! sulphosuccin-
`899 (Proctor & Gamble). These emulsions comprise
`ate, ammonium Iaury! sulphate, sodium dodecylbenzene
`volatile silicone or volatile hydrocarbon, and the parti-
`cle size of the volatile material in the final composition 40 sulphonate, triethanolamine dodecylbenzene sulpho(cid:173)
`nate and sodium N-lauryl sarcosinate. The most pre(cid:173)
`is said to be from 1 to 10 ~J-m.
`ferred anionic surfactant are sodium Iaury! sulphate,
`However, such compositions are not suitable for use
`triethanolamine Iaury! sulphate, triethanolamine mono(cid:173)
`as shampoos, and the hair should first be washed before
`Iaury! phosphate, sodium Iaury! ether sulphate lEO,
`applying the conditioner emulsion.
`2EO and 3EO, ammonium Iaury! sulphate and ammo-
`Non-volatile silicone oil has been incorporated di-
`rectly into shampoo compositions, as disclosed in EP 74
`nium Iaury! ether sulphate lEO, 2EO and 3EO.
`264 (Unilever), however the silicone oil is incorporated
`The nonionic surfactants suitable for use in the com-
`directly into the compositions, giving a particle size
`position of the invention may include condensation
`larger than 2 ~J-m, and an antifoam effect can be seen.
`products of aliphatic (Cs-Cis) primary or secondary
`We have found that the combination of an aqueous
`linear or branched chain alcohols or phenols with alkyl-
`emulsion of a silicone oil with a particular type of cati-
`ene oxides, usually ethylene oxide and generally 6-30
`onic conditioning polymer in a surfactant-based sham-
`EO.
`Other suitable nonionics include mono or di alkyl
`poo composition will impart improved conditioning
`benefit to the hair with none of the undesirable dulling 55 alkanolamides or alkyl polyglucosides. Examples in-
`clude coco mono or diethanolamide, coco mono iso-
`effects or greasy build-up seen with other conditioning
`products, and without the need for a two-step washing
`propanolamide, and coco di glucoside.
`The amphoteric surfactants suitable for use in the
`and conditioning procedure.
`Incorporating the silicone oil as a preformed aqueous
`composition of the invention may include alkyl amine
`emulsion has the consequences that the silicone is incor- 60 oxides, alkyl betaines, alkyl arnidopropyl betaines, alkyl
`sulphobetaines, alkyl glycinates, alkyl carboxyglyci-
`porated with a small particle size, Jess than 2 ~J-m. The
`silicone is insoluble and remains emulsified in the over-
`nates, alkyl amphopropionates, alkyl amidopropyl by-
`all composition. Incorporating the silicone oil in this
`droxysultaines, acyl
`taurates and acyl glutamates
`way makes the manufacture of the compositions easier.
`wherein the alkyl and acyl groups have from 8 to 18
`It also reduces the antifoam action of the silicone oil and 65 carbon atoms. Examples include Iaury! amine oxide,
`cocodimethyl sulphopropyl betaine and preferably !au-
`leads to compositions of greater stability.
`Accordingly, the invention provides an aqueous
`ryl betaine, cocamidopropyl betaine and sodium cocam-
`shampoo composition comprising, in addition to water
`phopropionate.
`
`45
`
`50
`
`2
`
`

`

`3
`The surfactants are present in the shampoo composi(cid:173)
`tion of the invention in an amount of from 2 to 40% by
`weight, and preferably from 5 to 30% by weight.
`
`5,085,857
`
`4
`The silicone materials described above are preferably
`incorporated in the shampoo composition of the inven(cid:173)
`tion as a pre-formed aqueous emulsion. The average
`particle size of the silicone material in this emulsion and
`5 in the shampoo composition is less than 2 ~-tm, prefera(cid:173)
`bly from 0.01 to 1 ~-tm. Particle size may be measured by
`means of a laser light scattering technique, using a
`2600D Particle Sizer from Malvern Instruments.
`The emulsion may be prepared by high shear me(cid:173)
`chanical mixing of the silicone and water, or by emulsi(cid:173)
`fying the insoluble, non-volatile silicone with water and
`an emulsifier-mixing the silicone into a heated solution
`of the emulsifier for instance, or by a combination of
`mechanical and chemical emulsification.
`Any surfactant materials either alone or in admixture
`may be used as emulsifiers in the preparation of the
`silicone emulsions. Preferred emulsifiers include anionic
`emulsifiers such as alkylarylsulphonates, e.g. sodium
`dodecylbenzene sulphonate, alkyl sulphates e.g. so(cid:173)
`dium, Iaury! sulphate, alkyl ether sulphates e.g. sodium
`Iaury! ether sulphate nEO, where n is from 1 to 20
`alkylphenol ether sulphates e.g. octylphenol ether sul(cid:173)
`phate nEO where n is from 1 to 20, and sulphocucci-
`25 nates e.g. sodium dioctylsulphosuccinate.
`Also suitable are nonionic emulsifiers such as alkyl(cid:173)
`phenol ethoxylates e.g. nonylphenol ethoxylate nEO,
`where n is from 1 to 50, alcohol ethoxylates e.g. Iaury!
`alcohol nEO, where n is from 1 to 50, ester ethoxylates
`30 e.g. polyoxyethylene monostearate where the number
`of oxyethylene units is from 1 to 30.
`Typically, a pre-formed emulsion will contain around
`50% of silicone. Pre-formed emulsions are available
`from suppliers of silicone oils such as Dow Corning,
`General Electric, Union Carbide, Wacker Chemie, Shin
`Etsu, Toshiba, Toyo Beauty Co. and Toray Silicone
`Co.
`The compositions of the invention contain from 0.01
`to 10% by weight, preferably from 0.1 to 5% by weight,
`of insoluble, non-volatile silicone. If Jess than O.Ql% by
`weight is present in the composition, little conditioning
`benefit is observed, and if more than 10% by weight is
`present, the hair will appear greasy.
`The aqueous pre-formed emulsion may be incorpo(cid:173)
`rated into the shampoo composition in an amount of
`from 0.02 to 50% by weight, preferably from 0.2 to 20%
`by weight.
`The exact quantity of emulsion will of course depend
`on the concentration of the emulsion, and should be
`selected to give the desired quantity of insoluble, non(cid:173)
`volatile silicone, in the fmal composition.
`To enhance stability, compositions of this invention
`preferably contain either a shear thinning polymer, such
`as a cross linked polyacrylate, or an insoluble solid
`which forms a network within the composition. Ethyl(cid:173)
`ene glycol distearate is such a solid: it also acts as a
`pearlescent agent.
`
`(b) Cationic conditioning polymer
`The composition of the invention comprises a cati(cid:173)
`onic conditioning polymer which is a cationic deriva(cid:173)
`tive of a guar gum.
`Suitable cationic guar gum derivatives are those
`given the CTF A designation guar hydroxypropyl 10
`trimonium chloride, available commercially for exam(cid:173)
`ple as JAGUAR Cl3S, which has a low degree of sub(cid:173)
`stitution of the cationic groups and a high viscosity. The
`low degree of cationic substitution leads to a cationic
`charge density of 0.0008. Other suitable materials in- 15
`elude that known as JAGUAR Cl5, having a moderate
`degree of substitution and a low viscosity, JAGUAR
`C 17 (high degree of substitution, hence cationic charge
`density of 0.0016, high viscosity) and JAGUAR Cl6
`which is a hydroxypropy1ated cationic guar derivative 20
`containing a low level of substituent groups as well as
`cationic quaternary ammonium groups. JAGUAR Cl6
`has a cationic charge density of 0.0008. Also suitable is
`JAGUAR 162 which is a high transparency, medium
`viscosity guar having a low degree of substitution.
`The compositions of the invention contain from 0.01
`to 3% by weight of cationic conditioning polymer,
`preferably from 0.1 to 2% by weight.
`
`(c) Silicone
`The shampoo composition of the invention also com(cid:173)
`prises an insoluble, non-volatile silicone, which may be
`one or more polyalkyl siloxanes, one or more polyalk(cid:173)
`ylaryl siloxanes, or mixtures thereof. The silicone is
`insoluble in the aqueous matrix of the composition and 35
`so is present in an emulsified form, with the silicone
`present as dispersed particles.
`Suitable polyalkyl siloxanes include polydimethyl
`siloxanes which have the CTFA designation dimethi(cid:173)
`cone, having a viscosity offrom 5 to 100,000 centistokes 40
`at 25° C. These siloxanes are available commercially
`from the General Electric Company as the Viscasil
`series and from Dow Corning as the DC 200 series. The
`viscosity can be measured by means of a glass capillary
`viscometer as set out further in Dow Corning Corpo- 45
`rate Test Method CTM004 July 20, 1970.
`Also suitable is polydiethyl siloxane.
`The polyalkylaryl siloxanes which may be used in the
`compositions of the invention include polymethylphe(cid:173)
`nyl polysiloxanes having a viscosity ,of from 15 to 65 50
`centistokes at 25° C. These siloxanes are available com(cid:173)
`mercially from the General Electric Company as SF
`1075 methyl phenyl fluid or from Dow Corning as 556
`Cosmetic Grade Fluid.
`Also suitable are silicone gums, such as those de- 55
`scribed in U.S. Pat. No. 4,152,416 (Spitzer), and on
`General Electric Silicone Rubber product Data Sheet
`SE 30, SE 33, SE 54 and SE 76. "Silicone gum" denotes
`polydiorganosiloxanes having a molecular weight of
`from 200,000 to 1,000,000, and specific examples in- 60
`elude polydimethyl siloxane polymer, polydimethyl
`siloxane/diphenyl/methylvinylsiloxane
`copolymer,
`polydimethylsiloxane/methylvinylsiloxane copolymer
`and mixtures thereof.
`Aminofunctional silicones which have the CTF A 65
`designation amodimethicone, such as Union Carbide
`TP 407 are also suitable for use in the compositions of
`the invention.
`
`USE OF THE COMPOSITION
`The shampoo composition of the invention may be
`applied in an amount of from 3 to 5 ml to wet hair. The
`wet hair is worked to create a lather. The lather may be
`retained on the head for a short time before rinsing e.g.
`from 1 to 4 minutes, or may immediately be rinsed. The
`washing procedure may be repeated if required.
`The hair is generally found to be clean, manageable
`and easy to be combed and styled, without the need for
`a further conditioning step.
`
`3
`
`

`

`5,085,857
`
`5
`The invention is also directed to the use of the combi(cid:173)
`nation of at least 0.01% of a cationic derivative of guar
`gum and at least 0.1% of an aqueous emulsion of an
`insoluble, non-volatile silicone, having an average parti(cid:173)
`cle size of less than 2 p.m, both expressed in terms of the 5
`weight of the total composition, for imparting improved
`conditioning benefit to hair, from a shampoo composi(cid:173)
`tion comprising a major proportion of a surfactant.
`
`6
`Example 3
`Several shampoos were prepared by hot mixing as in
`Example 2 and used in comparative tests in order to
`assess their conditioning properties.
`A11 of these compositions contained
`
`10 Sodium Laury! ether sulphate 2EO
`Cocoamidopropyl betaine
`Ethylene glycol distearate
`Silicone oil
`Cationic polymer
`Preservative, colour, perfume
`15 Water
`
`o/t wt
`
`16.0
`2.0
`2.0
`0% or 3%
`Oo/t: or 0.04%: or 0.3%:
`q.s.
`balance to 100.0%
`
`Other Ingredients
`The shampoo composition of the invention may also
`include minor amounts of other ingredients commonly
`found in shampoo compositions, such as antibacterial
`agents, antidandruff agents such as zinc pyridinethione
`or Octopirox, foam boosters, pearlescers, perfumes,
`dyes, colouring agents, preservatives, viscosity modifi(cid:173)
`ers, proteins, polymers, buffering agents, polyols and
`other moisturising agents, herb extracts, mink oil or
`honey.
`The invention is further illustrated by the following
`examples.
`
`EXAMPLES
`Example 1
`
`Shampoo
`contained
`
`o/t: preferring statistical
`test switches significance
`
`In each composition the silicone oil (if any) was
`added as an emulsion.
`Testing of the shampoo compositions was carried out
`using six 8 gram (20 em) hair switches. Each is sham(cid:173)
`pooed twice using 0.5 gram of shampoo each time, for
`a 30 ~econd wash time, then rinsed and dried. A test
`shampoo was used for three switches and a control
`25 shampoo (without silicone or cationic polymer) was
`used for three switches.
`Twelve panelists were then asked to assess the ease of
`combing of the dried switches, comparing test switches
`o/c Wt
`with control switches in a paired comparison test.
`16.0
`Sodium lauryl ether sulphate 2EO
`The following table sets out details of the silicone
`2.0
`Laury! betaine
`emulsions and cationic polymers used, and the test re-
`0.5
`Silicone oil (I)
`suits obtained.
`0.2
`Jaguar Cl3S
`Panelists were asked to express a preference for the
`0.4
`Carbopol 940 (2l
`switches which were easiest to comb. The result is
`q.s.
`Preservative, colour, perfume
`to 100.0
`Water
`- - - - - - - - - - - - - - - - - - - - - - 35 given as the percentage of panelists who considered the
`test switches easier to comb than the control switches.
`(I) Silicone oil was included as I o/c of an emulsion, BY22-026 from
`Toray Silicone Co. Ltd. comprising
`2.0
`Laury! alcohol ethoxylate 2EO
`2.0
`Laury! alcohol ethoxylate 2IEO
`50.0
`Polydimethylsiloxane (60,000 cS)
`Preservative
`q.s
`to 100.0
`Water
`(2) Carbopol 940 is a cross linked polyacrylate available from
`B F Goodrich.
`
`20
`
`30
`
`40
`
`50
`
`57
`
`not significant
`
`not significant
`
`0.39C Jaguar Cl3S
`Oo/t: silicone
`0% Cationic polymer
`6% silicone emulsion (I)
`0.3% Jaguar C13S
`6% silicone emulsion ( 1)
`0.04% Jaguar Cl3S
`6%: silicone emulsion (I)
`0.3% Jaguar Cl3S
`6% silicone emulsion (2)
`0.3%: Polymer JR 400 (3)
`6%: silicone emulsion (I)
`(1) BY 22-007 from Toray Silicone Co Ltd. Contains SO% of 350 centistrokes
`silicone, with average particle size 0.4 IJ.ffi
`(2) BY 22~26 from Toray Silicone Co Ltd. Contains 50% of 60,000 centistokes
`silicone with average panicle size 0.4 JLm.
`,
`(3) Polymer JR 400 is a cationic cellulose derivative of the type described in US Pat.
`No. 3472480. It has a cationic charge density of 0.0013.
`
`The shampoo is prepared using a simple cold process
`. whereby a11 the ingredients are mixed using a paddle 45
`stirrer.
`The silicone particles in the emulsion have a mean
`particle size of 0.4 p.m and remain the same size in the
`shampoo composition.
`
`50
`
`Example 2
`
`Sodium Laury] ether sulphate 2EO
`Cocoamidopropyl betaine
`Silicone oil (I)
`Jaguar Cl3S
`Ethylene glycol distearate
`Octopirox (2)
`Preservative, colour, perfume
`Water
`
`(!) 4.0% of emulsion BY22~26 as ElUliilple 1
`(2) Piroctone olamine ex Hoechst.
`
`o/t:w/w
`
`16.0
`2.0
`4.0
`0.1
`2.0
`0.5
`q.s.
`to 100.0
`
`55
`
`60
`
`The shampoo is prepared using a simple hot process 65
`whereby all the ingredients except perfume are mixed at
`70" C. using a paddle stirrer. The mixture is then cooled
`slowly, and perfume added below 40" C.
`
`94
`
`91
`
`97
`
`64
`
`better than 99.9%:
`
`better than 99.9%
`
`better than 99.9%
`
`better than 95%
`
`Example 4
`Three compositions were prepared by cold mixing as
`in Example 1. Each composition contained
`
`Sodium Iaury! ether sulphate 2EO
`Laury! betaine
`Coconut monoethanolamide
`Ethylene glycol distearate
`Jaguar Cl3S
`Formalin
`Glycerol
`
`%-WI
`
`15.0
`6.6
`1.5
`1.5
`0.1
`0.15
`1.0
`
`4
`
`

`

`7
`-continued
`
`Silicone oil
`
`%wt
`09C or 1~
`
`5,085,857
`
`The ethylene glycol distearate was incorporated as a
`preformed paste which also contained the alkanolamide
`and some of the Iaury! ether sulphate.
`One composition contained no silicone.
`Another composition contained 2% of the silicone 10
`emulsion used in Example 1, having an average silicone
`particle size of0.4 J.Lm. The third composition contained
`2% of silicone emulsion prepared with the same silicone
`oil, but with an average particle size of 4 J.Lm. This
`emulsion was prepared by emulsifying silicone oil in 15
`glycerol in the presence of sodium Iaury! ether sulphate
`2EO to give a preformed emulsion containing 50%
`silicone oil, 2% surfactant and balance glycerol. (Glyc(cid:173)
`erol was added separately to the other two composi-
`tions).
`The ability of the compositions to generate foam in
`use was tested using 8 gm (20 em) hair switches impreg(cid:173)
`nated with 0.08 gm of artificial sebum.
`The switch was placed in a plastic bag, 8 ml of water
`at 40° C. was added, followed by 0.8 ml of the composi- 25
`tion. The bag is held closed while the switch is mas(cid:173)
`saged in the solution for 30 seconds. Then the switch
`was removed, squeezing it to retain all the foam in the
`bag. The foam was then transferred to a measuring
`cylinder to determine its volume.
`The results obtained were:
`
`30
`
`20
`
`8
`Samples of the compositions were stored at 28' C.,
`37° C. and 50' C.
`At 28° C. the sample with larger silicone particles had
`separated into two phases after 6 months. The sample
`5 with the smaller silicone particles did not. The composi(cid:173)
`tion containing larger silicone particles also separated
`into two layers after 2 months at 37' C. or two weeks at
`50' C., whereas the composition with smaller particle
`size silicone did not do so.
`We claim:
`1. An aqueous shampoo co~position comprising, in
`addition to water,
`(a) from 2 to 40% by weight of surfactant selected
`from the group consisting of anionic, nonionic,
`amphoteric and surfactant mixtures thereof;
`(b) from 0.01 to 3% by weight of cationic condition(cid:173)
`is guar hydroxypropyl(cid:173)
`ing polymer which
`trimonium chloride;
`(c) from 0.1 to 10% by weight of an insoluble, non(cid:173)
`volatile silicone, present as emulsified particles
`with an average particle size of less than 2 J.Lm.
`2. A shampoo composition as claimed in claim 1
`wherein the anionic surfactant is selected from the
`group consisting of sodium Iaury! sulphate, triethanol(cid:173)
`amine Iaury! sulphate,
`triethanolamine monolauryl
`phosphate, sodium Iaury! ether sulphate 2EO, sodium
`Iaury! ether sulphate 3EO, ammonium lauryl sulphate,
`ammonium, Iaury! ether sulphate lEO, ammonium Iau(cid:173)
`ry! ether sulphate 2EO, ammonium Iaury! ether sul(cid:173)
`phate 3EO and mixtures thereof.
`3. A shampoo composition as claimed in claim 1
`wherein the amphoteric surfactant is selected from the
`group consisting of C8-J8 alkyl amidopropyl betaine and
`C8-18 alkyl betaine.
`4. A shampoo composition as claimed in claim 3
`wherein th~ amphoteric surfactant is selected from the
`group consisting of Iaury! betaine, cocamidopropyl
`betaine and sodium cocamophopropionate.
`5. A shampoo composition as claimed in claim 1
`wherein the insoluble, non-volatile silicone is selected
`from the group consisting of polyalkyl siloxanes, po(cid:173)
`lyalkylaryl siloxanes and mixtures thereof.
`6. A shampoo composition as claimed in claim 5
`wherein the insoluble, non-volatile silicone is selected
`from the group consisting of polydimethyl siloxane and
`polymethylphenyl siloxane.
`7. A shampoo composition as clafmed in claim 1
`wherein the silicone has an average particle size of from
`O.Dl to 1 J.Lm.
`8. A method of cosmetically treating hair to deposit
`insoluble, non-volatile silicone on the hair, which com(cid:173)
`prises washing the hair with an aqueous shampoo com(cid:173)
`position comprising:
`(a) from 2 to 40% by weight of surfactant selected
`from the group consisting of anionic, nonionic,
`amphoteric and surfactant mixtures thereof;
`(b) from 0.01 to 3% by weight of cationic condition(cid:173)
`ing polymer which
`is guar hydroxypropyl(cid:173)
`trimonium chloride;
`(c) from 0.1 to 10% by weight of an insoluble, non(cid:173)
`volatile silicone, present as emulsified particles
`with an average particle size of less than 2J.Lm.
`9. A method of making an aqueous shampoo compo(cid:173)
`sition as claimed in claim 1 comprising mixing together
`65 water, the surfactant, the cationic conditioning polymer
`and an aqueous emulsion of the silicone, wherein the
`silicone in the emulsion has an average particle size of
`less than 2 J.Lm.
`
`No silicone
`Silicone of 0.4 p.m size
`Silicone of 4 J.Lm size
`
`Foam volume
`22.0 ml ± 3.6 ml
`22.0 ml ± 2.0 ml
`17.0 ml ± 2.5 ml
`
`35
`
`Silicone of larger particle size is thus reducing foam,
`whereas silicone of smaller particle size, according to 40
`this invention, does not do so.
`
`Example 5
`Two compositions were prepared by cold mixing as
`in Example 1. Each composition contained
`
`Sodium Iaury] ether sulphate 2EO
`Cocoamidopropyl betaine
`Coconut monoethanolamide
`Silicone oil
`Jaguar C13S
`Glycerol
`Ethylene glycol distearate
`Formalin
`Water
`
`o/c w/w
`
`16.12
`2.0
`0.5
`1.0
`0.1
`1.0
`1.8
`0.1
`to 100
`
`45
`
`50
`
`55
`
`The silicone was added as emulsions which contained
`60,000 cS silicone oil. For one composition, 2% of the
`same emulsion as in Example 1 with an average particle 60
`size of 0.4 J.Lm was used. For the other composition the
`average particle size of the silicone was 3.0 J.Lm. This
`emulsion was prepared using the procedure mentioned
`in the previous example.
`The ethylene glycol distearate was added as a pre(cid:173)
`formed paste which also included the monoethanolam(cid:173)
`ide, and part of the betaine and part of the ether sul(cid:173)
`phate.
`
`5
`
`

`

`5,085,857
`
`9
`10. A shampoo composition as claimed in claim 1
`wherein the non-volatile silicone is selected from the
`group consisting of polyalkyl siloxanes having a viscos(cid:173)
`ity from 5 to 100,000 centistokes at 25' C., polyalkylaryl
`siloxanes having a viscosity of from 15 to 65 centistokes 5
`
`10
`at 25' C., and silicone gums consisting of polydior(cid:173)
`ganosiloxanes having a molecular weight of from
`200,000 to 1 ,000,000.
`• * • * •
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`65
`
`6
`
`