EA044409B1 - HAIR CONDITIONING COMPOSITION FOR IMPROVED DELIBILITY - Google Patents

Abstract

A conditioning composition for hair comprising: (i) from 0.01 to 10% by weight of a linear cationic conditioning surfactant; (ii) from 0.1 to 10% by weight of a linear fatty material; (iii) from 0.1 to 5% by weight of a particulate benefit agent which is a silicone selected from the group consisting of dimethicone, dimethiconol, amodimethicone and mixtures thereof; (iv) from 0.01 to 5% by weight, at 100% activity, of a branched cationic co-surfactant as defined by structure 1 wherein Rb, R2, R3, R4 and X are as defined in the specification; wherein the molar ratios of the branched cationic co-surfactants (iv) to the linear cationic surfactants (i) are in the range of from 1:10 to 1:1; wherein where R] and R2 comprise linear alkyl chains, at least one linear alkyl chain has a carbon-carbon chain length of from C2 to Cm; and wherein the compositions have a viscosity of from 5,000 to 750,000 centipoise as measured at 30°C on a Brookfield RVT using spindle A or B at 0.5 rpm for 60 s; and wherein the composition has a weight ratio of silicone to branched cationic co-surfactant of from 1:1 to 1:0.1.

Description

Field of technology

The present invention relates to conditioning compositions containing a branched co-surfactant for treating hair, which contain a benefiting agent, for example silicone, to be deposited on the hair during use, and in particular relates to a conditioning composition which allows increasing the amount beneficial agent to be deposited.

State of the art

In personal care compositions, such as hair treatment compositions, deposition and delivery of benefit agents are often key factors in product effectiveness. For example, many hair conditioners currently on the market benefit hair by depositing beneficial agents such as fragrance materials, silicones and damage repair actives onto the hair during the washing and conditioning process.

However, consumers report that they are disappointed with the level of benefits obtained from the use of some compositions. This is usually caused by insufficient amounts of beneficial agents being delivered to the surface. Therefore, it is necessary to develop compositions that provide improved delivery of beneficial materials to a surface, such as hair.

Branched cationic compounds are known in hair treatment compositions to provide various beneficial effects.

EP 2355904 describes a hair conditioning composition comprising: a cationic surfactant system which contains a mixture of a mono-(long alkyl) quaternized ammonium salt and a di-(long alkyl) quaternized ammonium salt; fatty compound with a high melting point; direct dye and aqueous carrier. The composition is believed to provide improved coloring properties while providing conditioning properties.

US Pat. No. 9,289,630 describes similar compositions containing an additional non-ionic thickening polymer.

US 2013/0259817 describes a hair conditioning composition comprising a monoalkylamine cationic surfactant, a dialkylquaternized ammonium salt cationic surfactant, a high melting point fatty compound, a precipitated polymer and silicone compound and an aqueous carrier; for use on damaged hair.

DE 102015223028 describes a cosmetic composition for providing a long-lasting care effect on keratin fibers, containing in a cosmetic carrier: a) at least one specified esterquat in an amount of from 0.01 to 20.0% by weight, based on the total weight of the composition, and b) at least another cationic and/or cationizable compound other than a) in an amount of from 0.01 to 20.0% by weight.

Although branched materials are known in home and personal care products, they have not been effectively used to enhance the deposition of beneficial agents on hair.

Product viscosity is a key property for consumers. However, the present inventors have discovered that the addition of branched surfactants to gel networks disrupts the gel bilayers and consequently reduces the viscosity to unacceptably low values.

Despite the prior art, there remains a need for improved hair benefits without compromising consumer-desired viscosity characteristics.

The present inventors have unexpectedly discovered that compositions containing a combination of certain branched co-surfactants in combination with a certain linear conditioning surfactant provide an unexpectedly large increase in the deposition of beneficial agents (eg, silicone, encapsulated flavors) while maintaining excellent product viscosity .

Unless otherwise stated, all percentages stated herein are by weight based on the total weight.

Description of the invention

Accordingly, a hair conditioning composition is provided comprising:

(i) from 0.01 to 10 wt.%, linear cationic conditioning surfactant;

(ii) from 0.1 to 10% by weight, linear fatty material;

(iii) from 0.1 to 5% by weight of a particulate benefit agent that is a silicone selected from the group consisting of dimethicone, dimethiconol, amodimethicone, and mixtures thereof;

(iv) from 0.01 to 5 wt.%, at 100% activity, of a branched cationic co-surfactant, as defined by structure 1

- 1 044409 r ₃ r _{4 υ} θ

ΙΑ.

Ri © R ₂

Structure 1 where: R ₁ and R2 contain straight or branched alkyl chains that are saturated or unsaturated, with a carbon-carbon chain length from C ₂ to C ₃₂ , and which optionally contain at least one group selected from an ester group, an amide group group and ether group;

R ₃ includes an alkyl chain having a carbon-carbon chain length from C ₁ to C ₂ ;

R4 includes a proton or alkyl chain having a carbon-carbon chain length from C ₁ to C ₂ , and

X is an anion selected from halide ions; sulfates of the general formula RSO ₃ ^- where R represents a saturated or unsaturated alkyl radical having from 1 to 4 carbon atoms, and anionic radicals of organic acids;

wherein the molar ratios of branched cationic co-surfactants (iv) to linear cationic surfactants (i) range from 1:10 to 1:1;

wherein R ₁ and R ₂ contain linear alkyl chains, at least one linear alkyl chain has a carbon-carbon chain length from C ₂ to C ₁₄ ; and wherein the compositions have a viscosity of from 5,000 to 750,000 centipoise, as measured at 30° C. on a Brookfield RVT using spindle A or B at 0.5 rpm for 60 seconds; and wherein the composition has a weight ratio of silicone to branched cationic co-surfactant from 1:1 to 1:0.1.

In a second aspect, the present invention provides a method of increasing the deposition of a benefit agent on hair, comprising the step of applying a composition according to the first aspect to the hair compared to the same composition without the branched cationic co-surfactant according to Structure 1.

The method according to the present invention preferably includes the additional step of rinsing the composition from the hair.

Preferably, the method is a method of increasing the deposition of silicone on the hair, comprising the steps of applying the composition defined by the first aspect of the present invention to the hair and rinsing the hair with water.

The compositions of the present invention are preferably formulated as conditioners for treating hair (typically after shampooing) and subsequent rinsing.

General Description of the Invention

Preferably, the treatment composition is selected from a rinse-out hair conditioner, a hair mask, a leave-in conditioner composition and a pre-treatment composition, more preferably selected from a rinse-out hair conditioner, a hair mask, a leave-in conditioner composition and a pre-treatment composition, e.g. an oil treatment and most preferably selected from a leave-in hair conditioner, a hair mask and a leave-in conditioner composition. The treatment composition is preferably selected from a leave-in hair conditioner and a leave-in conditioner.

Rinse-out conditioners for use in the present invention are conditioners that are typically left on damp hair for 1-2 minutes before rinsing.

Hair masks for use in the present invention are treatments that are typically left on the hair for 3 to 10, preferably 3 to 5, more preferably 4 to 5 minutes before rinsing.

Leave-in conditioners for use in the present invention are typically applied to the hair and left on the hair for more than 10 minutes, and preferably applied to the hair after washing and not rinsing until the next wash.

Linear cationic conditioning surfactant.

Conditioner compositions contain a linear cationic conditioning surfactant that is cosmetically acceptable and suitable for topical application to the hair.

Preferably, the linear cationic conditioning surfactants have formula 1: N ⁺ (R ¹ )(R ² )(R ³ )(R ⁴ ), wherein R ¹ , R ² , R ³ and R ⁴ are independently (C ₁ -C ₃₀ ) alkyl or benzyl.

In Formula 1, preferably, one, two or three of ^R1 , ^R2 , ^R3 and ^R4 are independently (C4 to C30) alkyl, and the other ^R1 , ^R2 , ^R3 and ^{R4 is} a group or groups are (C1- _C6 ) alkyl or benzyl.

More preferably, one or two of R ¹ , R ² , R ³ and R ⁴ are independently (C6 to C30) alkyl, and the other R ¹ , R ² , R ³ and R ⁴ groups are (C1-C ₆ ) alkyl or benzyl groups

- 2 044409 p.i. Optionally, said alkyl groups may contain one or more ester (OCO- or -COO-) and/or ether (-O-) linkages within the alkyl chain. Alkyl groups may optionally be replaced by one or more hydroxyl groups. Alkyl groups may be straight or branched and, in the case of alkyl groups containing 3 or more carbon atoms, cyclic. Alkyl groups may be saturated or contain one or more carbon-carbon double bonds (eg, oleyl). Alkyl groups are optionally ethoxylated on the alkyl chain by one or more ethylene oxide groups.

Suitable quaternary amine salts for use in the conditioner compositions of the present invention are quaternary amine salts containing from 12 to 24 carbon atoms, preferably from 16 to 22 carbon atoms.

Suitable quaternary amine salts for use in the conditioner compositions of the present invention include cetyltrimethylammonium chloride, behenyltrimethylammonium chloride, behentrimonium methosulfate, behenylamidopropyldimethylamine, cetyltrimethylammonium chloride, cetylpyridinium chloride, tetramethylammonium chloride, tetraethylammonium chloride, octyltrimethylammonium chloride, dod ecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, octyldimethylbenzylammonium chloride, decyldimethylbenzylammonium chloride , stearyldimethylbenzylammonium chloride, stearalkonium chloride, stearalkonium methosulfate, didodecyldimethylammonium chloride, dioctadecyldimethylammonium chloride, (tall alkyl)trimethyl ammonium chloride, bis(hydrogenated tall alkyl) dimethyl ammonium chloride (e.g. Arquad 2HT/75 from Akzo Nobel) and cocotrimethyl ammonium ia chloride.

Preferred quaternary amine salts are selected from behenyltrimethylammonium chloride, behentrimonium methosulfate, cetyltrimethylammonium chloride and mixtures thereof.

A particularly suitable cationic surfactant for use in the conditioners of the present invention is cetyltrimethylammonium chloride, commercially available, for example, such as GENAMIN CTAC, from Hoechst Celanese. Another particularly preferred cationic surfactant for use in the conditioners of the present invention is behenyl trimethyl ammonium chloride, commercially available, for example, under the name GENAMIN KDMP from Clariant. Additional suitable cationic surfactants include those materials designated CTFA quaternium5, quaternium-31, and quaternium-18. Mixtures of any of the above materials are also suitable.

Another example of a class of suitable cationic surfactants for use in the present invention, alone or in conjunction with one or more other cationic surfactants, is a combination of (i) and (ii) below:

(i) an amidoamine corresponding to the general formula (II):

R ¹ CONH(CH ₂ )mN(R ² )R ³ (ll) in which R ¹ represents a hydrocarbyl chain containing 10 or more carbon atoms, R ² and R ³ are independently selected from hydrocarbyl chains containing from 1 to 10 atoms carbon, and m is an integer from 1 to about 10; and (ii) acids.

As used herein, the term hydrocarbyl chain refers to an alkyl or alkenyl chain.

Preferred amidoamine compounds are those corresponding to formula (I), in which

R ¹ is a hydrocarbyl residue containing from about 11 to about 24 carbon atoms,

R ² and R ³ are each independently hydrocarbyl moieties, preferably alkyl groups containing from 1 to about 4 carbon atoms, and m is an integer from 1 to about 4.

Preferably R ² and R ³ represent methyl or ethyl groups. Preferably m is 2 or 3, i.e. ethylene or propylene group.

Preferred amidoamines suitable for the present invention include stearamidopropyldimethylamine, stearamidopropyldiethylamine, stearamidoethyldiethylamine, stearamidoethyldimethylamine, palmitamidopropyldimethylamine, palmitamidopropyldiethylamine, palmitamidoethyldiethylamine, palmitamidoethyldimethylamine, behenamidopropyldimethylamine, behen amidopropyldiethylamine, behenamidoethyldiethylamine, behenamidoethyldimethylamine, arachidamidopropyldimethylamine, arachidamidopropyldiethylamine, arachidamidoethyldiethylamine, arachidamidoethyldimethylamine and mixtures thereof. Particularly preferred amidoamines suitable for the present invention are stearamidopropyldimethylamine, stearamidoethyldiethylamine, and mixtures thereof.

Commercially available amidoamines suitable for the present invention include: stearamidopropyldimethylamine under the trade names LEXAMINE S-13, available from Inolex (Philadelphia Pennsylvania, USA) and AMIDOAMINE MSP, available from Nikko (Tokyo, Japan), stearamidoethyldiethylamine under the trade name AMIDOAMINE S, available from Nikko, behenamidopropyl-3 044409 dimethylamine under the trade name INCROMINE BB, available from Croda (North Humberside, England), and various amidoamines under the trade name SCHERCODINE series, available from Scher (Clifton New Jersey, USA).

The acid may be any organic or inorganic acid that is capable of protonating the amidoamine in the conditioner composition. Suitable acids used herein include hydrochloric acid, acetic acid, tartaric acid, fumaric acid, lactic acid, malic acid, succinic acid and mixtures thereof. Preferably the acid is selected from the group consisting of acetic acid, tartaric acid, hydrochloric acid, fumaric acid, lactic acid and mixtures thereof.

The primary role of the acid is to protonate the amidoamine in the hair care composition, thereby forming a tertiary amine salt (TAS) in situ in the hair care composition. TAS is essentially a non-permanent cationic quaternary ammonium or pseudo-quaternary ammonium surfactant.

Accordingly, the acid is included in an amount sufficient to protonate more than 95 mol% (293 K) of the amidoamine present.

In conditioners for use according to the present invention, the content of linear cationic conditioning surfactant is generally in the range of 0.01 to 10%, more preferably 0.05 to 7.5%, most preferably 0.1 to 5% of total weight of cationic conditioning surfactant based on the total weight of the composition.

Linear bold material.

The composition according to the present invention contains from 0.1 to 10 wt.%, linear fatty material.

The combined use of fatty materials and cationic surfactants in conditioning compositions is believed to be particularly advantageous because it results in the formation of a structured lamellar phase or liquid crystalline phase in which the cationic surfactant is dispersed.

By fatty material is meant a fatty alcohol, an alkoxylated fatty alcohol, a fatty acid, or a mixture thereof. Preferably, the linear fatty material is selected from a fatty alcohol and a fatty acid, most preferably a fatty alcohol.

Preferably, the alkyl chain of the fatty substance is fully saturated. Typical fatty substances contain from 8 to 22 carbon atoms, more preferably from 16 to 22.

Suitable fatty alcohols contain from 8 to 22 carbon atoms, preferably from 16 to 22, most preferably from C16 to C18. Fatty alcohols are generally compounds containing straight chain alkyl groups. Preferably the alkyl groups are saturated. Examples of preferred fatty alcohols include cetyl alcohol, stearyl alcohol, and mixtures thereof. The use of these substances is also beneficial since they contribute to the overall conditioning properties of the compositions for use according to the present invention.

Alkoxylated (eg, ethoxylated or propoxylated) fatty alcohols containing from about 12 to about 18 carbon atoms in the alkyl chain can be used instead of or in addition to the fatty alcohols themselves. Suitable examples include ethylene glycol cetyl ether, polyoxyethylene (2) stearyl ether, polyoxyethylene (4) cetyl ether, and mixtures thereof.

The fatty content of the conditioners of the present invention is suitably from 0.01 to 10, preferably from 0.1 to 10 and more preferably from 0.1 to 5 percent based on the total weight of the composition. The weight ratio of cationic surfactant to fatty alcohol is from 10:1 to 1:10, preferably from 4:1 to 1:8, optimally from 1:1 to 1:7, for example 1:3.

Beneficial agent in particle form.

The composition of the present invention contains the benefit agent in particulate form. In the context of the present invention, the beneficial agent has a beneficial effect on the substrate to which the composition of the present invention is applied. The advantage is, for example, a conditioning effect or a flavoring effect.

The particulate benefit agent is preferably selected from conditioning actives, scalp actives, encapsulated fragrance, emulsified fragrance and mixtures thereof. More preferably, the particulate benefit agent is selected from conditioning actives, encapsulated flavor, and mixtures thereof. Most preferably, the particulate benefit agent is selected from a silicone emulsion and an encapsulated flavor.

Preferred conditioning actives are silicone emulsions.

Silicone.

The compositions of the present invention may contain emulsified droplets of a silicone conditioning agent.

Suitable silicones include polydiorganosiloxanes, in particular polydimethylsiloxanes, which according to the CTFA have the name dimethicone. Also suitable for use in the compositions of the present invention are polydimethylsiloxanes containing hydroxyl end groups, which according to the CTFA have the name dimethiconol. Also suitable for use in the compositions of the present invention are silicone resins having a slight degree of cross-linking, as described, for example, in WO 96/31188. Preferably, the silicone is selected from the group consisting of dimethicone, dimethiconol, amodimethicone and mixtures thereof. Also preferred are mixtures of amino-functional silicones with dimethicones.

The viscosity of the emulsified silicone itself (not the emulsion or final hair conditioning composition) is typically at least 10,000 cSt at 25° C., the viscosity of the silicone itself is preferably at least 60,000 cSt, more preferably at least 500,000 cSt, most preferably at least 1,000,000 cSt. Preferably the viscosity does not exceed 109 cSt for ease of preparation. Emulsified silicones for use in the compositions of the present invention typically have a D90 silicone droplet size in the composition of less than 30, preferably less than 20, more preferably less than 10 microns, most preferably 0.01 to 1 micron. Silicone emulsions having an average silicone droplet size (D50) of 0.15 microns are commonly referred to as microemulsions.

Silicone particle size can be measured by laser light scattering, such as the 2600D Particle Size Meter from Malvern Instruments.

Examples of suitable preformed emulsions include Xiameter MEM 1785 and microemulsion DC2-1865, available from Dow Corning. They are emulsions/microemulsions of dimethiconol. Cross-linked silicone resins are also available in pre-emulsified form, which is preferred for ease of preparation.

Another preferred class of silicones for inclusion in the compositions of the present invention are amino functional silicones. By amino-functional silicone is meant a silicone containing at least one primary, secondary and tertiary amino group or quaternary ammonium group. Examples of suitable amino-functional silicones include: polysiloxanes, having the CTFA designation amodimethicone. A preferred amodimethicone is commercially available from Dow Corning as DC 7134.

Specific examples of amino functional silicones suitable for use in the present invention are the amino silicone oils DC2-8220, DC2-8166 and DC2-8566 (all from Dow Corning).

Suitable quaternary silicone polymers are described in EP-A-0 530 974. A preferred quaternary silicone polymer is K3474 from Goldschmidt.

Emulsions of amino-functionalized silicone oils with a nonionic and/or cationic surfactant are also suitable. Preformed amino-functional silicone emulsions are also available from silicone oil suppliers such as Dow Corning and General Electric. Specific examples include cationic emulsion DC939 and nonionic emulsions DC2-7224, DC2-8467, DC2-8177 and DC2-8154 (all from Dow Corning). The total amount of silicone is preferably 0.1 to 10% by weight, based on the total weight of the composition, more preferably 0.1 to 5, most preferably 0.5 to 3% by weight is a suitable content.

The weight ratio of silicone to branched cationic cosurfactant is preferably 1:1 to 1:0.1, more preferably 1:0.2 to 1:0.4, and most preferably 1:0.25 to 1:0, 4.

The particulate benefit agent may be a scalp active that is insoluble in the composition of the present invention, or may be in the form of an emulsion. Preferred scalp actives are selected from metal pyrithiones, azoles, octopyrox (piroctone olamine), selenium sulfide, salicylic acid and combinations thereof, preferably metal pyrithiones, azoles and octopyrox. Azole-based antifungal agents include ketoconazole and climbazole, preferably climbazole.

The particulate benefit agent may be an emulsified flavor or an encapsulated flavor. For clarity, a flavoring agent may also be referred to in the present invention as a fragrance. The following are perfume materials that can be suitably emulsified or encapsulated for use in the compositions of the present invention.

Examples of flavoring materials for use in the present invention include geraniol, geranyl acetate, linalol, linalyl acetate, tetrahydrolinalol, citronellol, citronellyl acetate, dihydromyrcenol, dihydromyrcenyl acetate, tetrahydromyrcenol, terpineol, terpinyl acetate, nopylacetate, 2-phenylethanol, 2-phenylethylace tat, benzyl alcohol, benzyl acetate, benzyl salicylate, styryl acetate, benzyl benzoate, amyl salicylate, dimethyl benzyl carbinol, trichloromethyl phenyl carbinyl acetate, p-tert

- 5 044409 butylcyclohexyl acetate, isononyl acetate, vetiveryl acetate, vetiverol, α-hexylcinnamaldehyde, 2-methyl-3-p-tert-butylphenyl)propanal, 2-methyl-3-(p-isopropylphenyl)propanal, 2-(p-tert-butylphenyl)propanal, 2 ,4-dimethyl-cyclohex-3-enylcarboxaldehyde, tricyclodecenyl acetate, tricyclodecenylpropionate, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexenecarboxyldehyde, 4-(4-methyl-3pentenyl)-3-cyclohexenecarboxaldehyde, 4-acetoxy-3 -pentyl-tetrahydropyran, 3-carboxymethyl-2pentylcyclopentane, 2-n-heptylcyclopentanone, 3-methyl-2-pentyl-2-cyclopentenone, n-decanal, ndecanal, 9-decenol-1, phenoxyethyl isobutyrate, phenylacetaldehyde dimethyl acetal, phenylacetaldehyde diethylacetal, geranyl nitrile , citronellylnitrile, cedryl acetate, 3-isocamphylcyclohexanol, cedryl methyl ether, isolongifolanone, obepynnitrile, obepine, heliotropin, coumarin, eugenol, vanillin, diphenyl oxide, hydroxycitronellal, ionones, methyl ionones, isomethyl ionones, irons, cis-3-hexenol and their esters, indane musk , tetralin musk, isochroman musk, macrocyclic ketones, macrolactone musk, ethylene brassylate and mixtures thereof.

Encapsulated flavors preferably contain a polymer shell (capsule wall) that forms a microcapsule. The polymer shell of the microcapsule can be obtained using interfacial polymerization.

Interfacial polymerization produces encapsulated shells by reacting at least one oil-soluble wall-forming material present in the oil phase with at least one water-soluble wall-forming material present in the aqueous phase. A polymerization reaction occurs between the two wall-forming materials, resulting in the formation of covalent bonds at the interface of the oil and water phases to form the capsule wall.

Preferably, the polymer shell of the microcapsule is an aminoplast resin selected from polyurea obtained by reacting polyisocyanates with a material selected from polyamines, polyimines or mixtures thereof.

Preferably, the microcapsules are activated by shear; that is, they are broken by shearing to release the contents.

A particularly preferred microcapsule has a polyurea shell prepared as described in US 2013/0330292 A1 and US 2012/0148644 A1 and available from International Flavors & Fragrances Inc.

Predominantly the polymer shell makes up no more than 20 wt.% by weight of the microcapsules.

By changing the process conditions, microcapsules of the desired size can be obtained in a known manner. The microcapsules typically have an average diameter in the range of 1 to 500, preferably 1 to 300, more preferably 1 to 50, and most preferably 1 to 10 microns. If necessary, the microcapsules as received may be filtered or sieved to obtain a more homogeneous product in size.

In a typical composition according to the present invention, the content of microcapsules is usually in the range of 0.2 to 2%, and preferably from 0.5 to 1.5% by weight, based on the total weight of the composition.

A branched cationic co-surfactant.

The composition of the present invention includes a branched cationic co-surfactant.

Branched cationic co-surfactant defined by structure 1

R ₃ R ₄ Θ *

Ri © R ₂

Structure 1 where: R1 and _R2 contain linear or branched, preferably branched alkyl chains which are saturated or unsaturated, with a carbon-carbon chain length from C2 to _C32 , preferably _C8 - _C20 , and which optionally contain at least one group selected from an ester group, an amide group and an ester group;

R3 includes an alkyl chain having a carbon-carbon chain length of C1 to _C4 , preferably C1 to C2,

R4 includes a proton or alkyl chain having a carbon-carbon chain length of C1 to _C4 , preferably C1 to _C2 , and

X represents an organic or inorganic anion.

Where R1 and _R2 contain one or more linear alkyl chains, the at least one linear alkyl chain has a carbon-carbon chain length from C1 to _C14 . If R1 and R1 contain only one alkyl chain, then this alkyl chain has a carbon-carbon chain length from C1 to _C14 .

Preferably R ₁ and R ₁ contain alkyl chains that are branched.

Molar ratios of branched cationic co-surfactants

- 6 044409 (iv) to linear cationic surfactants (i) are in the range from 1:20 to 1:1, preferably from 1:10 to 1:1, most preferably from 1:5 to 1:2.

The branched-chain co-surfactant is present in an amount of

0.01 to 5 wt.%, preferably from 0.1 to 1, most preferably from 0.1 to 0.5 (at 100% activity and based on the total weight of the composition).

X represents an organic or inorganic anion. Preferably X includes an anion selected from halide ions; sulfates of the general formula RSO3 ^- , where R represents a saturated or unsaturated alkyl radical having from 1 to 4 carbon atoms, and anionic radicals of organic acids.

Preferred halide ions are selected from fluoride, chloride, bromide and iodide. Preferred anionic organic acid radicals are selected from maleate, fumarate, oxalate, tartrate, citrate, lactate and acetate. Preferred sulfates are methanesulfonate and ethanesulfonate.

Most preferably, X ^- includes an anion selected from a halide, a methanesulfonate group and an ethanesulfonate group.

Preferred examples include dioleoylisopropyldimonium methosulfate, dioleoylisopropyldimonium chloride, dipalmoylisopropyldimonium methosulfate, dipalmoylisopropyldimonium chloride, bis(isostearoyl/oleoylisopropyl)dimonium methosulfate, bis(isostearoyl/oleoylisopropyl)dimonium chlorides, and dioleylethylhydroxyethylmonium chloride. ia methosulfate.

Dimonium methosulfate bis(isostearoyl/oleoylisopropyl) is designated in INCI nomenclature as Quaternium-98 and is commercially available under the name Varisoft® EQ 100 from Evonik. An additional preferred connection is available under the name Varisoft® EQ 65 also from Evonik.

Dioleylethylhydroxyethylmonium methosulfate is commercially available as Tetranyl® CO40 from Kao; as well as other products from the Tetranyl® family: Tetranyl® AO-1, Tetranyl® AT-1, Tetranyl® AT 1-PG, Tetranyl® AT-75, Tetranyl® AT7590, Tetranyl® L1/90 and Tetranyl® L6/90.

Rheology of composition.

The compositions of the present invention provide good viscosity and yield strength properties.

The compositions have a preferred yield stress range of 30 to 200 Pascal (Pa), most preferably 40 to 150 Pa. The method for measuring yield strength uses a configuration of serrated parallel plates with a diameter of 40 mm attached to a suitable rheometer capable of vibrating at a constant frequency of 1 Hz and varying in amplitude in the range of 0.1 to 2000%. The amplitude range applies to no more than ten points per order of the deformation range, covered by no more than 4 cycles per amplitude. The device should be used under controlled deformation, for example, with the ARES G2 rheometer from TA Instruments. The configuration temperature should be set at 25°C, for example using a Peltier controlled plate or a recirculating bath. The yield strength is determined by plotting elastic stress versus strain amplitude, and at the peak of the curve, the maximum value is reported as the yield strength. Elastic stress is calculated as the product of (dynamic modulus of elasticity) * (strain amplitude), each of which can be easily obtained using the device.

The compositions preferably have a viscosity of from 5,000 to 750,000 centipoise, preferably from 50,000 to 600,000 centipoise, more preferably from 50,000 to 450,000, as measured at 30°C on a Brookfield RVT using spindle A or B at 0.5 rpm for 60 seconds on the Helipath stand.

A preferred conditioner includes a conditioning gel phase. These conditioners contain little or no vesicles. Such conditioners and methods for their preparation are described in WO 2014/016354, WO 2014/016353, WO 2012/016352 and WO 2014/016351.

Such conditioning gel phase comprises, based on the total weight of the composition,

i) from 0.4 to 8% by weight, a fatty alcohol containing from 8 to 22 carbon atoms, ii) from 0.1 to 2% by weight, a cationic surfactant, and the composition provides for hair treated with said composition , Draw Mass is from 1 to 250 g, preferably from 2 to 100 g, more preferably from 2 to 50 g, even more preferably from 5 to 40 g, and most preferably from 5 to 25 g.

Draw Mass is the mass required to draw a bunch of hair through a comb or brush. Thus, the more tangled the hair, the more mass is required to pull a tuft of hair through a comb or brush, and the higher the level of hair conditioning, the lower the Draw Mass.

Draw Mass is the mass required to pass a bundle of hair, for example weighing from 1 to 20 g, length from 10 to 30 cm and width from 0.5 to 5 cm, through a comb or brush, determined in this way: first place the bundle of hair on comb or brush so that 5 to 20 cm of hair is left hanging at the fixed end of the bun, and additional force (mass) is applied to the hanging end until

- 7 044409 until the bundle passes through the comb or brush.

Preferably the hair tuft has a weight of from 1 to 20, more preferably from 2 to 15, most preferably from 5 to 10 g. Preferably the hair tuft has a length of from 10 to 40 cm, more preferably from 10 to 30 cm, and a width of from 0.5 up to 5 cm, more preferably from 1.5 to 4 cm.

Most preferably, Draw Mass is the mass required to pass a bundle of hair, for example weighing 10 g, 20 cm long and 3 cm wide, through a comb or brush, determined as follows: first, a bundle of hair is placed on the comb or brush so that 20 cm the hair is left hanging at the fixed end of the bundle, and additional force (mass) is applied to the hanging end until the bundle passes through the comb or brush.

Other Ingredients.

The composition according to the present invention may contain any of a number.

ingredients that are common to hair conditioning compositions.

Other ingredients may include viscosity modifiers, preservatives, coloring agents, polyols such as glycerin and polypropylene glycol, chelating agents such as EDTA, antioxidants such as vitamin E acetate, fragrances, antimicrobial agents and sunscreen agents. Each of these ingredients is present in an amount effective to achieve its effect. Typically, these optional ingredients are included separately in amounts up to about 5% by weight of the total composition.

Preferably, additional ingredients include flavoring agents, thickeners, preservatives, coloring agents and conditioning silicones.

Mixtures of any of the above active ingredients may also be used.

Typically such ingredients are included separately in amounts of up to 2, preferably up to 1%, based on the total weight of the composition.

Preferably, the compositions do not contain hair dyes (eg, direct dye, temporary dye, semi-permanent dye, permanent dye and hair pigment).

Preferably, the compositions do not contain a deposition polymer.

Examples

Example 1 Composition 1 according to the present invention and comparative compositions A and B.

The following compositions were prepared:

Table 1

Compositions of examples A and B (comparative) and example 1 (in accordance with the invention)

Example A Example B Example 1 Ingredients Comparative Comparative Structure 1 Behentrimonium chloride 2.00 1.0 0.8 Cetearyl alcohol 4.00 4.5 3.2 Xiameter MEM-7134 1.00 1.00 1.00 Bis- (Isostearoyl/Oleoyl Isopropyl) Dimonium Methosulfate - - 0.8 Distearoyl Hydroxyethylmonium Methosulfate - 1.00 - Fragrance 0.60 0.6 0.6 Preservative How many How many How many necessary necessary necessary Water up to 100 Up to 100 up to 100

The conditioners in Examples A, B and 1 were prepared using the following method:

1) surfactants and fatty materials (including branched materials) were added to a suitable vessel and heated to 80°C;

2) the molten mixture was added to a suitable amount of water in accordance with the described compositions at a temperature of from 45 to 70°C;

3) the mixture was stirred until opaque and thick;

4) then the heating was turned off, the mixture was cooled to a temperature below 40°C, and the rest of the water was added along with the remaining materials;

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Claims (9)

5) Finally, the resulting composition was mixed under high shear in a Silverson mixer at 5000 rpm for 5 minutes. Example 2. Hair treatment with compositions A, B and 1. We used dark brown hair of the European type in bundles weighing 5 g and a length of approximately 0.15 m (6 inches). First, the hair was treated with a cleansing shampoo using the following method: the hair fibers were kept under running water for 30 s, shampoo was applied at a dose of 0.1 ml of shampoo per 1 g of hair and rubbed into the hair for 30 s. Excess foam was removed by keeping under running water for 30 s, and the shampooing step was repeated. The hair was washed under running water for 1 minute. Wet hair was then treated with conditioner A, B or 1 using the following method: The conditioner was applied to damp hair at a dose of 0.2 ml of conditioner per 1 g of hair and rubbed into the hair for 1 minute. The hair was washed under running water for 1 min and excess water was removed. Example 3: Silicone deposition and yield stress on hair treated with compositions A, B and 1. table 2 Yield strength and amount of silicone deposited on hair treated according to Examples A and B (comparative) and Example 1 (according to the invention) Example A Example B Example 1 Ingredients Comparative Comparative Structure 1 Silicone deposition [PPt] 431 574 2293 Silicone deposition ST DEV [ppm] 63 82 901 Yield strength [Pa] (-+10 Pa) 182 108 65 CLAIM 1. Hair conditioning composition containing: (i) from 0.01 to 10 wt.% linear cationic conditioning surfactant; (ii) from 0.1 to 10% by weight linear fatty material; (iii) from 0.1 to 5% by weight of a particulate benefit agent that is a silicone selected from the group consisting of dimethicone, dimethiconol, amodimethicone, and mixtures thereof; (iv) from 0.01 to 5 wt.%, at 100% activity, of a branched cationic co-surfactant, as defined by structure 1 R ₃ R ₄ Ri © r ₂ Structure 1 where: R1 and _R2 contain straight or branched alkyl chains which are saturated or unsaturated, with a carbon-carbon chain length from _C2 to _C32 , and which optionally contain at least one group selected from an ester group, an amide group group and ether group; R ₃ includes an alkyl chain having a carbon-carbon chain length from C1 to C ₂ ; R4 includes a proton or alkyl chain having a carbon-carbon chain length from C1 to _C2 ; And X is an anion selected from halide ions; sulfates of the general formula RSO ₃ , where R represents a saturated or unsaturated alkyl radical having from 1 to 4 carbon atoms, and anionic radicals of organic acids; wherein the molar ratios of branched cationic co-surfactants (iv) to linear cationic surfactants (i) range from 1:10 to 1:1; wherein R1 and _R2 contain linear alkyl chains, at least one linear alkyl chain has a carbon-carbon chain length from _C2 to _C14 ; and wherein the compositions have a viscosity of from 5,000 to 750,000 centipoise when measured at 30° C. on a Brookfield RVT using spindle A or B at 0.5 rpm for 60 seconds; And - 9 044409 where the composition has a mass ratio of silicone and branched cationic auxiliary surfactant from 1:1 to 1:0.1. 2. The composition according to claim 1, in which the linear cationic surfactant has formula 1: N ⁺ (R ¹ )(R ² )(R ³ )(R ⁴ ), wherein R ¹ , R ² , R ³ and R ⁴ independently represent Ci-C ₃₀ alkyl or benzyl. 3. The composition of claim 2, wherein the linear cationic conditioning surfactant is selected from behenyltrimethylammonium chloride, behentrimonium methosulfate, cetyltrimethylammonium chloride and mixtures thereof. 4. Composition according to claims 1-3, in which the cationic surfactant is an amidoamine corresponding to the general formula (II): R ¹ CONH(CH ₂ ) _m N(R ² )R ³ (II) in which R ¹ is a hydrocarbyl chain containing 10 or more carbon atoms, R ² and R ³ are independently selected from hydrocarbyl chains containing from 1 to 10 carbon atoms, and m is an integer from 1 to 10; and the composition further contains an acid that is capable of protonating the amidoamine. 5. Composition according to claims 1 to 4, wherein the branched cationic co-surfactant is present in an amount of 0.1 to 1, preferably 0.1 to 0.5 wt.%, with 100% activity based on the total weight of the composition . 6. Composition according to claims 1 to 5, wherein the molar ratios of branched cationic co-surfactants (iv) to linear cationic surfactants (i) are in the range from 1:10 to 1:1, preferably from 1: 5 to 1:2. 7. A composition according to claims 1 to 6, which has a yield strength in the range of 30 to 200 Pascal (Pa), most preferably from 40 to 150 Pa with a peak value at 25°C and 1 Hz. 8. The composition according to claims 1 to 7, in which the branched cationic auxiliary surfactant is selected from dioleoylisopropyldimonium methosulfate, dioleoylisopropyldimonium chloride, dipalmoylisopropyldimonium methosulfate, dipalmoylisopropyldimonium chloride, bis(isostearoyl/oleoylisopropyl)dimonium methosulfate, bis( isostearoyl/oleoylisopropyl)dimonium chlorides and dioleylethylhydroxyethylmonium methosulfate. 9. A method of increasing the deposition of a particulate benefit agent on hair, comprising the steps of applying a composition to the hair as defined in any one of pi. 1-8, and rinsing the hair with water, compared to the same composition without the branched cationic co-surfactant according to structure 1. Eurasian Patent Organization, EAPO Russia, 109012, Moscow, Maly Cherkassky lane, 2