Hair care composition

Abstract

A hair care composition comprising a triglyceride oil having at least about 30% C18:1 and a low melting point wax.

Description

Technical Field

[0001] The present invention relates to a hair care composition comprising an oil and a wax blend for natural hair conditioning.

Background Art

[0002] To improve hair health, various approaches have been developed. A common way to achieve hair health effects is by using conditioning agents such as cationic surfactants and polymers, high melting point aliphatic compounds, low melting point oils, silicone compounds, and mixtures thereof. Most of these conditioning agents are known to provide various hair health effects. However, some consumers do not prefer to use hair conditioners with silicone compounds. This is either because they desire more natural conditioning actives or because they do not like the feel that silicone gives to the hair.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Therefore, there is a need for a hair conditioner containing natural conditioning actives that can provide significant benefits to consumers.

Means for Solving the Problems

[0004] A hair care composition comprising a triglyceride oil having at least about 30% C18:1 and a low melting point wax.

Modes for Carrying Out the Invention

[0005] This specification concludes with "Claims" that particularly point out and distinctly claim the invention, which is considered to be better understood from the following description.

[0006] As used herein, "comprising" means that other steps and other components may be added that do not affect the final result. This term encompasses the terms "consisting of" and "consisting essentially of".

[0007] All percentages, parts, and ratios are based on the total weight of the composition of the invention, unless otherwise specified. All such weights, when referring to the recited components, are based on the active ingredient concentration and thus do not include carriers or by-products that may be included in commercially available materials.

[0008] As used herein, "mixture" means a simple combination of materials and any compounds that may result from such a combination.

[0009] The term "molecular weight" or "M.Wt.", as used herein, refers to the weight average molecular weight, unless otherwise specified. The weight average molecular weight can be measured by gel permeation chromatography.

[0010] "QS" means an amount sufficient to make it 100%.

[0011] Hair products Since some consumers are interested in hair care compositions that do not contain silicone, alternative conditioning active substances are needed. The hair care compositions of the present invention contain triglyceride natural oils for imparting conditioning performance. These oils are liquid and lubricious at room temperature. However, in order to provide conditioning from a rinse-out conditioner, it is necessary to deliver the oil to the hair. There are two important parameters for controlling the adhesion of the oil to the hair: i) the interfacial properties of the oil with respect to the hair surface and ii) the viscosity of the oil.

[0012] The dynamics of adhesion and the rate of wetting are controlled by the viscosity of the oil. As the viscosity increases, the spreading rate decreases, but the "roll-up" rate also decreases, promoting persistence during rinsing. Thus, if the viscosity is too low, the oil is removed too easily, but if the viscosity is too high, it means that the material bounces off the surface and does not spread. Therefore, the problem to be solved is a method of increasing the viscosity of the triglyceride oil such that it can adhere to the hair from a rinse-off product, yet still retain the conditioning lubricity and conditioning effect.

[0013] The inventors have found that the solution is to mix the triglyceride oil with a low melting point wax. This increases the viscosity, yet still retains the conditioning effect of the triglyceride. The low melting point wax also provides some lubricity and conditioning. However, there is also a requirement that the oil / wax blend be homogeneous and stable, which means that when the two are melted together, they do not separate upon cooling and revert to the individual components.

[0014] Surprisingly, it has been found that low melting point waxes and certain types of triglyceride oils can form a blend that remains homogeneous upon cooling and has a higher viscosity than the original triglyceride oil. This higher viscosity blend significantly increases the adhesion of triglycerides to hair and provides enhanced conditioning performance as measured by combing data during wet and dry conditions. For example, citrus aurantium dulcis (orange) peel wax and certain triglyceride oils form a more viscous blend that remains homogeneous. Not all triglyceride oils have the ability to increase viscosity when blended with citrus aurantium dulcis (orange) peel wax. The percentages of C18:1 (oleic acid) and C18:0 (stearic acid) in the oil blend are important. The inventors have found that it is most effective when the proportion of oleic acid in the triglyceride is at least about 30%. In some embodiments, the proportion of oleic acid in the triglyceride is at least about 50%, i.e., the triglyceride oil contains at least about 50% C18:1. The C18:1 chain of the triglyceride is thought to not only maximize the positive hydrophobic-hydrophobic interaction with the ester side chains present in citrus aurantium dulcis (orange) peel wax, but also retain the triglyceride fluid. As the percentage of the C18:0 side chain increases, there is a higher likelihood of higher interactions, but this results in the triglyceride being denser and less lubricious.

[0015] A. Cationic surfactant system The hair care composition described in this specification contains a cationic surfactant system. The cationic surfactant system can be one kind of cationic surfactant or a mixture of two or more kinds of cationic surfactants. The cationic surfactant system can be selected from a mono-long-chain alkyl quaternized ammonium salt; a combination of a mono-long-chain alkyl quaternized ammonium salt and a di-long-chain alkyl quaternized ammonium salt, a mono-long-chain alkyl amidoamine salt, a combination of a mono-long-chain alkyl amidoamine salt and a di-long-chain alkyl quaternized ammonium salt, and a combination of a mono-long-chain alkyl amidoamine salt and a mono-long-chain alkyl quaternized ammonium salt.

[0016] The cationic surfactant system can be contained in the hair care composition at a concentration of about 0.1 wt% to about 10 wt%, or about 0.5 wt% to about 8 wt%, or about 0.8 wt% to about 5 wt%, or about 1.0 wt% to about 4 wt% of the hair care composition.

[0017] Mono-long-chain alkyl quaternized ammonium salt The monoalkyl quaternized ammonium salt cationic surfactant useful in this specification has one alkyl long chain having 12 to 30 carbon atoms, 16 to 24 carbon atoms, and in one embodiment is based on a C18-22 alkyl group. The remaining groups bonded to the nitrogen are independently selected from an alkyl group having 1 to about 4 carbon atoms, or an alkoxy group having up to about 4 carbon atoms, a polyoxyalkylene group, an alkylamide group, a hydroxyalkyl group, an aryl group, or an alkylaryl group.

[0018] The mono-long-chain alkyl quaternized ammonium salt useful in this specification has the following formula (I):

[0019]

Chemical formula

[0020] Non-limiting examples of such mono-long-chain alkyl quaternized ammonium salt cationic surfactants include behenyltrimethylammonium salt, stearyltrimethylammonium salt, cetyltrimethylammonium salt, and hydrogenated tallow alkyltrimethylammonium salt.

[0021] Mono-long-chain alkyl amide amine salt Mono-long-chain alkyl amines are also suitable as cationic surfactants. Primary, secondary, and tertiary aliphatic amines are useful. Tertiary amide amines having an alkyl group of about 12 to about 22 carbons are particularly useful. Exemplary tertiary amide amines include stearamidopropyldimethylamine, stearamidopropyldiethylamine, stearamidoethyldiethylamine, stearamidoethyldimethylamine, palmitamidopropyldimethylamine, palmitamidopropyldiethylamine, palmitamidoethyldiethylamine, palmitamidoethyldimethylamine, behenamidopropyldimethylamine, behenamidopropyldiethylamine, behenamidoethyldiethylamine, behenamidoethyldimethylamine, arachidamidopropyldimethylamine, arachidamidopropyldiethylamine, arachidamidoethyldiethylamine, arachidamidoethyldimethylamine, and diethylaminoethyl stearamide. The amines useful in the present invention are disclosed in U.S. Patent No. 4,275,055 (Nachtigal et al.). These amines can also be used in combination with acids such as L-glutamic acid, lactic acid, hydrochloric acid, malic acid, succinic acid, acetic acid, fumaric acid, tartaric acid, citric acid, L-glutamic acid hydrochloride, maleic acid, and mixtures thereof, and in one embodiment, can also be used in combination with L-glutamic acid, lactic acid, and / or citric acid. The amines herein can be partially neutralized by any acid such that the molar ratio of the amine to the acid is about 1:0.3 to about 1:2 and / or about 1:0.4 to about 1:1.

[0022] Di-long-chain alkyl quaternized ammonium salt The dialkyl quaternized ammonium salt can be combined with a mono-long-chain alkyl quaternized ammonium salt or a mono-long-chain alkyl amide amine salt. Such a combination is considered to be able to bring about a feeling that it is easier to rinse compared to the single use of a monoalkyl quaternized ammonium salt or a mono-long-chain alkyl amide amine salt. In such a combination with a mono-long-chain alkyl quaternized ammonium salt or a mono-long-chain alkyl amide amine salt, the dialkyl quaternized ammonium salt is used at a concentration such that the weight percentage of the dialkyl quaternized ammonium salt in the cationic surfactant system is in the range of about 10% to about 50% and / or about 30% to about 45%.

[0023] The dialkyl quaternized ammonium salt cationic surfactants useful herein have two alkyl long chains having 12 to 30 carbon atoms, and / or 16 to 24 carbon atoms, and / or 18 to 22 carbon atoms. The remaining groups bonded to the nitrogen are independently selected from an alkyl group having 1 to about 4 carbon atoms, or an alkoxy group, a polyoxyalkylene group, an alkylamide group, a hydroxyalkyl group, an aryl group, or an alkylaryl group having up to about 4 carbon atoms.

[0024] The dialkyl quaternized ammonium salts useful herein have the following formula (II):

[0025] [Chemical formula] (wherein two of R 75 , R 76 , R 77 and R 78 are selected from an alkyl group having 12 to 30 carbon atoms, or an aromatic group, an alkoxy group, a polyoxyalkylene group, an alkylamide group, a hydroxyalkyl group, an aryl group, or an alkylaryl group having up to about 30 carbon atoms, and R 75 , R 76 , R 77 , and R 78The remainder of these is independently selected from alkyl groups having 1 to about 4 carbon atoms, or alkoxy groups, polyoxyalkylene groups, alkylamide groups, hydroxyalkyl groups, aryl groups, or alkylaryl groups having up to about 4 carbon atoms, X - is a salt-forming anion, for example, one selected from halogens (e.g., chloride, bromide), acetate, citrate, lactate, glycolate, phosphate, nitrate, sulfonate, sulfate, alkyl sulfate, and alkyl sulfonate groups). The alkyl group may contain, in addition to carbon and hydrogen atoms, ether and / or ester bonds, and other groups such as amino groups. Longer-chain alkyl groups, for example, those having about 12 or more carbon atoms, may be saturated or unsaturated. R 75 R 76 R 77 R 78 One of R 75 R 76 R 77 R 78 and the remainder of R

[0026] Examples of such dialkyl quaternary ammonium salt cationic surfactants include dialkyl(14 - 18)dimethylammonium chloride, ditallow alkyldimethylammonium chloride, dihydrogenated tallow alkyldimethylammonium chloride, distearyldimethylammonium chloride, and dicetyldimethylammonium chloride. Also, examples of such dialkyl quaternary ammonium salt cationic surfactants include, for example, asymmetric dialkyl quaternary ammonium salt cationic surfactants.

[0027] B. High melting point aliphatic compounds The hair care composition contains one or more high melting point aliphatic compounds. One or more high melting point aliphatic compounds useful herein can have a melting point of 25 °C or higher and can be selected from the group consisting of aliphatic alcohols, fatty acids, aliphatic alcohol derivatives, fatty acid derivatives, and mixtures thereof. It will be understood by those skilled in the art that the compounds disclosed in this section of the specification may in some cases belong to more than one classification (for example, some aliphatic alcohol derivatives may also be classified as fatty acid derivatives). However, a given classification is not intended to limit that particular compound, but is done for convenience of classification and nomenclature. Further, it will be understood by those skilled in the art that depending on the number and position of double bonds, and the length and position of branches, a particular compound having a particular number of carbon atoms can have a melting point below 25 °C. Such low melting point compounds are not intended to be included in this section. Non-limiting examples of high melting point compounds can be found in the International Cosmetic Ingredient Dictionary, Fifth Edition, 1993, and the CTFA Cosmetic Ingredient Handbook, Second Edition, 1992.

[0028] Among various high melting point aliphatic compounds, aliphatic alcohols are suitable for use in the hair care composition. Aliphatic alcohols useful herein have from about 14 to about 30 carbon atoms, from about 16 to about 22 carbon atoms. These aliphatic alcohols are saturated and can be straight-chain or branched alcohols. Suitable aliphatic alcohols include, for example, cetyl alcohol, stearyl alcohol, behenyl alcohol, and mixtures thereof.

[0029] High melting point aliphatic compounds of high purity single compounds can be used. Single compounds of pure aliphatic alcohols selected from the group of pure cetyl alcohol, stearyl alcohol, and behenyl alcohol can also be used. As used herein, "pure" means that the compound has a purity of at least about 90% and / or at least about 95%. These high purity single compounds provide good rinsability from the hair when the consumer rinses the composition.

[0030] One or more high melting point aliphatic compounds can be included in the hair care composition at a concentration of about 0.1 wt% to about 20 wt%, or about 1 wt% to about 15 wt%, or further about 1.5 wt% to about 8 wt% of the hair care. One or more high melting point aliphatic compounds can provide improved conditioning effects such as a smooth feel when applying the hair care composition to wet hair, softness of the top hair in dry hair, and a moist feel in dry hair.

[0031] C. Aqueous Carrier The hair care composition contains an aqueous carrier at a concentration of about 75 wt% to about 98 wt%, or about 80 wt% to about 95 wt% of the hair care composition. Thus, the hair care composition may be in the form of a liquid that can be poured (under ambient conditions). This aqueous carrier may include water or a miscible mixture of water and an organic solvent. In one aspect, it may contain water with minimal organic solvent or no significant concentration of organic solvent, except when accidentally incorporated into the composition as a minor component of other constituents.

[0032] The aqueous carrier may include aqueous solutions of lower alkyl alcohols and polyhydric alcohols. Lower alkyl alcohols useful herein are monohydric alcohols having 1 to 6 carbons, and in one aspect, ethanol and isopropanol. Polyhydric alcohols useful herein include propylene glycol, hexylene glycol, glycerin, and propanediol.

[0033] The hair care composition can have a pH in the range of about 2 to about 10, or about 3 to about 8, at 25°C. The hair care composition can also be effective in washing away existing minerals and redox metal deposits, thereby reducing cuticle deformation and reducing cuticle chipping and damage.

[0034] D. Gel Matrix The hair care composition can further comprise a gel matrix. The gel matrix comprises a cationic surfactant, a high melting point aliphatic compound, and an aqueous carrier.

[0035] The gel matrix is suitable for providing various conditioning effects such as a smooth feel when applied to wet hair and softness and a moist feel in dry hair. In view of the provision of the above-described gel matrix, the cationic surfactant and the high melting point aliphatic compound are contained at concentrations such that the weight ratio of the cationic surfactant to the high melting point aliphatic compound is in the range of about 1:1 to about 1:10, and / or about 1:1 to about 1:6.

[0036] E. Additional Ingredients 1. Natural Conditioning Agent The hair care composition herein can include triglyceride oil blended with wax. As described above, triglyceride oil provides a conditioning effect but may not be effective alone. It has a specific viscosity, such as 1.0 to 5.0 Pa at a shear rate of 1 1 / s, which allows the conditioner to adhere better to the hair. A typical triglyceride oil has a viscosity of 0.25 to 0.04 Pa at a shear rate of 1 1 / s, which means it can be easily removed during rinsing.

[0037] However, the triglyceride oil may be blended with wax. The triglyceride oil mixed with a low melting point wax can have an increased viscosity, but still retains the conditioning effect. The low melting point wax can also provide some lubricity and conditioning. However, it has further been found that some combinations of triglyceride oil and wax function better than other combinations. For example, certain triglyceride oils form a blend with Citrus aurantium dulcis (orange) peel wax that is homogeneous and has a higher viscosity than the original triglyceride oil. This higher viscosity blend significantly increases the adhesion of the triglyceride to the hair and provides enhanced conditioning performance. The percentages of C18:1 (oleic acid) and C18:0 (stearic acid) in the oil blend are important. The proportion of oleic acid in the triglyceride needs to be at least about 30%, and in some embodiments at least about 50%. The C18:1 chain of the triglyceride not only maximizes the positive hydrophobic-hydrophobic interaction with the ester side chains present in Citrus aurantium dulcis (orange) peel wax, but is also thought to still retain the triglyceride fluid. As the percentage of the C18:0 side chain increases, there is a higher likelihood of higher interactions, but this results in the triglyceride being denser and less lubricious.

[0038] In some embodiments, the triglyceride oil can be selected from the group consisting of safflower seed oil, avocado oil, almond oil, olive oil, tea seed oil, tule (wild apricot) seed oil, peanut oil, marula oil, and combinations thereof. These triglyceride oils have at least 30% C18:1, and in some embodiments at least 50% C18:1. Safflower seed oil (high oleic acid (OA) version) has 73% C18:1, avocado oil has 55% - 75%, almond oil has 60% - 70%, and olive oil has 65% - 80% C18:1.

[0039] The ratio of triglyceride oil to low melting point wax can be from about 90:10 to about 50:50, and in some embodiments can be from about 85:15 to about 60:40. The amount of triglyceride in the hair care composition by weight of the composition can be from about 0.5 wt% to about 5 wt%, and in some embodiments can be from about 1 wt% to about 3 wt%.

[0040] Citrus aurantium dulcis (orange) peel wax functions well, but other low melting point waxes may also be used. The low melting point wax can be selected from the group consisting of Citrus aurantium dulcis (orange) peel wax, Citrus limon (lemon) peel wax, Berberis wax, Lanolin wax, plant-derived Lanolin wax, Aurantium amara (bitter orange) flower wax, Acacia farnesiana (sweet acacia) wax, Narcissus poeticus (daffodil flower) wax, Rosa centifolia (rose flower) wax, Jasminium sambac (jasmine) flower wax, and combinations thereof. In this case, the low melting point is considered to be a melting point of up to about 45°C.

[0041] In some embodiments, it may be an option to add a lower level (less than about 10 wt% of the wax) of a higher melting point wax to the low melting point wax to add additional viscosity. The final level of the higher melting point wax in the wax blend can be less than about 5%. Possible options for the higher melting point wax include rice bran wax, sunflower wax, carnauba wax, candelilla wax, beeswax, hydrogenated sunflower, soybean, and hydrogenated triglyceride oils such as olive oil, and any combination thereof, but are not limited thereto. In one embodiment, the wax blend can be sunflower wax and rice bran wax.

[0042] Table 1 below shows various triglyceride oils measured at two different speeds, combined with Citrus aurantium dulcis (orange) peel wax (OPW) at a ratio of 75:25, the fatty acid content C18:1 of the triglyceride oils, and the viscosity of the blends. This indicates that triglyceride oils containing at least 30% or at least 50% C18:1 have a higher viscosity when blended with orange peel wax.

[0043]

Table 1

[0044] Table 2 below shows the adhesion data measured on unstained and stained hair for three hair conditioning compositions. The first hair care composition contains no wax and only 3 wt% of safflower oil in the composition. The second hair care composition contains a 4:1 blend of safflower oil and orange peel wax at 3 wt% of the composition. The third hair care composition similarly contains only 3 wt% of orange peel wax in the composition and does not contain triglycerides. The composition other than 3% wax and / or oil was the same as Example 13 below. Using the test method described below, the amount of safflower oil adhering to the hair was measured. The data shows that the blend of safflower oil and orange peel wax adhered the most. This was more than when safflower oil was used alone. The hair care composition containing only orange peel wax naturally showed no safflower oil adhesion, but the presence of orange peel wax in the blend allowed more safflower oil to adhere. As expected, generally more adhered to unstained hair compared to stained hair, but the adhesion superiority of the blend over either triglyceride or wax alone was evident for both types of hair.

[0045]

Table 2

[0046] Tables 3 and 4 below show the combing data of the same three hair care compositions when wet and dry, respectively, as used in Table 2. For both wet and dry combing, the blend of safflower oil and orange peel wax results in the least friction. This demonstrates that the natural blend of safflower oil and orange peel wax can provide the effects of a hair conditioner desired by consumers.

[0047] [Table 3]

[0048] In some embodiments, the hair care composition may not substantially contain silicone and may not contain silicone at all. In still other embodiments, the blend of natural conditioning agents described herein may be combined with silicone or a silicone conditioning agent.

[0049] The hair care composition may contain a silicone conditioning agent comprising a silicone compound. The silicone compound may comprise a volatile silicone, a non-volatile silicone, or a combination thereof. When a volatile silicone is present, it is typically associated with use as a solvent or carrier for non-volatile silicone material components in commercial forms such as silicone gums and resins. The silicone compound may comprise a silicone fluid conditioning agent and may also comprise other components such as silicone resins to improve the adhesion efficiency of the silicone fluid or enhance the gloss of the hair. The concentration of the silicone compound in the hair care composition is typically in the range of about 0.01 wt% to about 10 wt%, about 0.1 wt% to about 8 wt%, about 0.1 wt% to about 5 wt%, or even about 0.2 wt% to about 3 wt%. Suitable silicones for use herein include, but are not limited to, PDMS (dimethicone) silicones, PQAS (silicone quaternium-26); PDMS, terminal amino silicones, and combinations thereof. In embodiments comprising both a natural conditioning agent and a silicone conditioning agent, the ratio of the natural conditioning agent to the silicone conditioning agent may be from about 25:75 to about 75:25.

[0050] Additional suitable silicone compounds include (a) a first polysiloxane that is non-volatile, substantially free of amino groups, and has a viscosity of about 100,000 mm 2 s -1 to about 30,000,000 mm 2 s -1 ; (b) a second polysiloxane that is non-volatile, substantially free of amino groups, and has a viscosity of about 5 mm 2 s -1 to about 10,000 mm 2 s -1 ; (c) an aminosilicone having less than about 0.5 wt% nitrogen based on the weight of the aminosilicone; (d) about 100 x 10 6 mm 2 s -1Silicone copolymer emulsions having super internal phase viscosities, (e) silicone polymers containing quaternary groups, or (f) grafted silicone copolyols, and the silicone compounds (a)-(f) are disclosed in U.S. Patent Application Publication Nos. 2008 / 0292574, 2007 / 0041929, 2008 / 0292575, and 2007 / 0286837, each of which is hereby incorporated by reference in its entirety. Further description of suitable silicone conditioning agents can be found in U.S. Patent Application No. 62 / 945,959, Attorney Docket No. 15687P.

[0051] 2. Other conditioning agents Also, conditioning agents described in U.S. Patent Nos. 5,674,478 and 5,750,122 by Procter & Gamble Company are also suitable for use in the hair care compositions herein. Similarly, conditioning agents described in U.S. Patent Nos. 4,529,586, 4,507,280, 4,663,158, 4,197,865, 4,217,914, 4,381,919, and 4,422,853 are also suitable for use herein.

[0052] a. Organic conditioning oils The hair care composition may further comprise an organic conditioning oil. According to an embodiment, the hair care composition may comprise at least one organic conditioning oil in an amount of from about 0.05 wt% to about 3 wt%, from about 0.08 wt% to about 1.5 wt%, or even from about 0.1 wt% to about 1 wt% in combination with other conditioning agents described herein as a conditioning agent. Suitable conditioning oils include hydrocarbon oils, polyolefins, and fatty acid esters. Suitable hydrocarbon oils include hydrocarbon oils having at least about 10 carbon atoms, such as cyclic hydrocarbons, straight-chain aliphatic hydrocarbons (saturated or unsaturated), and branched-chain aliphatic hydrocarbons (saturated or unsaturated) (including polymers and mixtures thereof), but are not limited thereto. Straight-chain hydrocarbon oils are typically from about C12 to about C19. Branched-chain hydrocarbon oils (including hydrocarbon polymers) typically contain more than 19 carbon atoms. Suitable polyolefins include liquid polyolefins, liquid poly-α-olefins, or even hydrogenated liquid poly-α-olefins. Polyolefins for use herein can be prepared by polymerization of C4 to about C14 or even C6 to about C12. Suitable fatty acid esters include, but are not limited to, fatty acid esters having at least 10 carbon atoms. These fatty acid esters include esters with hydrocarbyl chains derived from fatty acids or alcohols (e.g., monoesters, polyhydric alcohol esters, and di- and tri-carboxylic acid esters). The hydrocarbyl groups of the fatty acid esters herein may contain other compatible functional groups, such as amide and alkoxy moieties (e.g., ethoxy or ether linkages, etc.), and may be covalently bonded thereto.

[0053] 3. Nonionic Polymer The hair care composition may further comprise a nonionic polymer. According to one embodiment, the conditioning agent for use in the hair care composition of the present invention may comprise a polyalkylene glycol polymer. For example, polyalkylene glycols having a molecular weight greater than about 1000 are useful herein. The following general formula (VIII):

[0054] [Chemical formula] (wherein, R 11 is selected from the group consisting of H, methyl, and mixtures thereof, and v is the number of ethoxy units) are useful. Polyalkylene glycols such as polyethylene glycol can be included in the hair care composition of the present invention at a concentration of about 0.001% to about 10% by weight. In one embodiment, polyethylene glycol is present in an amount of up to about 5% by weight based on the weight of the composition. Polyethylene glycol polymers useful herein are PEG-2M (also known as Polyox WSR® N-10 and available from Union Carbide as PEG-2,000); PEG-5M (also known as Polyox WSR® N-35 and Polyox WSR® N-80 and available from Union Carbide as PEG-5,000 and Polyethylene Glycol 300,000); PEG-7M (also known as Polyox WSR® N-750 and available from Union Carbide); PEG-9M (also known as Polyox WSR® N-3333 and available from Union Carbide); and PEG-14M (also known as Polyox WSR® N-3000 and available from Union Carbide).

[0055] 4. Suspending agent The hair care composition may further contain a suspending agent at an effective concentration to suspend the water-insoluble material in a dispersed form in the composition or to modify the viscosity of the composition. Such concentrations range from about 0.1% to about 10% by weight, or even from about 0.3% to about 5.0% by weight.

[0056] Suspending agents useful in the present specification include anionic polymers and nonionic polymers. Vinyl polymers such as crosslinked acrylic acid polymers (CTFA name Carbomer), methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, nitrocellulose, sodium cellulose sulfate, sodium carboxymethylcellulose, crystalline cellulose, cellulose powder and other cellulose derivatives and modified cellulose polymers, polyvinylpyrrolidone, polyvinyl alcohol, guar gum, hydroxypropyl guar gum, xanthan gum, gum arabic, tragacanth, galactan, velvet bean gum, guar gum, karaya gum, carrageenan, pectin, agar, quince seeds (Cydonia oblonga Mill), starch (rice, corn, potato, wheat), algal colloids (algal extracts), dextran, succinoglucan, pullulan and other microbiological polymers, carboxymethyl starch, methylhydroxypropyl starch and other starch-based polymers, sodium alginate, propylene glycol alginate and other alginate-based polymers, sodium polyacrylate, polyethyl acrylate and other acrylate polymers, polyacrylamide, polyethyleneimine, and inorganic water-soluble materials such as bentonite, magnesium aluminum silicate, laponite, hectorite, and silica anhydride are useful in the present specification.

[0057] Commercially available viscosity modifiers that are very useful in this specification include Carbomer of the trade names Carbopol® 934, Carbopol® 940, Carbopol® 950, Carbopol® 980, and Carbopol® 981, all available from the B.F.Goodrich Company, acrylate / stearyl-20 methacrylate copolymer of the trade name ACRYSOL™ 22 available from Rohm and Hass, nonoxynyl hydroxyethyl cellulose of the trade name Amercell™ POLYMER HM-1500 available from Amerchol, methylcellulose of the trade name BENECEL® supplied by Hercules, hydroxyethyl cellulose of the trade name NATROSOL®, hydroxypropyl cellulose of the trade name KLUCEL®, cetyl hydroxyethyl cellulose of the trade name POLYSURF® 67, ethylene oxide and / or propylene oxide-based polymers of the trade names CARBOWAX® PEGs, POLYOX WASRs, and UCON® FLUIDS supplied by Amerchol.

[0058] Other optional suspending agents include crystalline suspending agents that can be classified as acyl derivatives, long-chain amine oxides, and mixtures thereof. These suspending agents are described in U.S. Patent No. 4,741,855.

[0059] As these suspending agents, in one aspect, ethylene glycol esters of fatty acids having about 16 to about 22 carbon atoms are included. In one aspect, useful suspending agents include ethylene glycol stearate (both mono and distearate), and in one aspect, distearate containing less than about 7% of monostearate is included. Other suitable suspending agents include alkanolamides of fatty acids having about 16 to about 22 carbon atoms, or more specifically about 16 to 18 carbon atoms, examples of which include monoethanolamide stearate, diethanolamide stearate, monoisopropanolamide stearate, and monoethanolamide stearate stearate. Other long-chain acyl derivatives include long-chain esters of long-chain fatty acids (e.g., stearyl stearate, cetyl palmitate, etc.), long-chain esters of long-chain alkanolamides (e.g., stearamide diethanolamide distearate, stearamide monoethanolamide stearate), and glyceryl esters (e.g., glyceryl distearate, trihydroxystearin, tribehenin) (a commercial example of which is Thixin® R, available from Rheox, Inc.). In addition to the materials listed above, long-chain acyl derivatives, ethylene glycol esters of long-chain carboxylic acids, long-chain amine oxides, and alkanolamides of long-chain carboxylic acids can be used as suspending agents.

[0060] Other long-chain acyl derivatives suitable for use as suspending agents include N,N-dihydrocarbylamide benzoic acid and its soluble salts (e.g., Na, K), particularly N,N-di(hydrogenated) C16, C18, and tallow amide benzoic acid species of this classification, which are commercially available from Stepan Company (Northfield, Ill., USA).

[0061] Examples of long-chain amine oxides suitable for use as suspending agents include alkyldimethylamine oxides, such as stearyldimethylamine oxide.

[0062] Other suitable suspending agents include primary amines having a fatty acid alkyl moiety with at least about 16 carbon atoms (examples thereof include palmitamine or stearamine), and secondary amines having two fatty acid alkyl moieties each having at least about 12 carbon atoms (examples thereof include dipalmitoyl amine or di(hydrogenated tallow)amine). Still other suitable suspending agents include di(hydrogenated tallow)phthalamide, and crosslinked maleic anhydride-methyl vinyl ether copolymer.

[0063] H. Beneficial agents The hair care composition may further contain one or more additional beneficial agents. The beneficial agents include materials selected from the group consisting of anti-dandruff agents, vitamins, fat-soluble vitamins, chelating agents, fragrances, brightening agents, enzymes, sensory agents, attractants, antibacterial agents, dyes, pigments, bleaching agents, and mixtures thereof.

[0064] In one aspect, the beneficial agent may include an anti-dandruff agent. Such anti-dandruff microparticles need to be physically and chemically compatible with the components of the composition and should not unduly impair the stability, aesthetics or performance of the product.

[0065] According to one embodiment, the hair care composition contains an anti-dandruff active substance, and the anti-dandruff active substance may be anti-dandruff active microparticles. In one embodiment, the anti-dandruff active substance may be selected from the group consisting of pyrithione salts; azoles such as ketoconazole, econazole, and elubiol; selenium sulfide; particulate sulfur; keratolytic agents such as salicylic acid; and mixtures thereof. In one embodiment, the anti-dandruff microparticles are pyrithione salts.

[0066] Pyrithione fine particles are a suitable fine particle anti-dandruff active ingredient. In one embodiment, the anti-dandruff active substance is a 1-hydroxy-2-pyrithione salt and is in fine particle form. In one embodiment, the concentration of the pyrithione anti-dandruff particles ranges from about 0.01% by weight to about 5% by weight, or from about 0.1% by weight to about 3% by weight, or from about 0.1% by weight to about 2% by weight. In one embodiment, the pyrithione salt is formed from heavy metals such as zinc, tin, cadmium, magnesium, aluminum, and zirconium, generally from zinc, typically the zinc salt of 1-hydroxy-2-pyrithione (known as "zinc pyrithione" or "ZPT"), usually a 1-hydroxy-2-pyrithione salt in platelet particle form. In one embodiment, the 1-hydroxy-2-pyrithione salt in platelet-like particle form has an average particle size of about 20 μm or less, or about 5 μm or less, or about 2.5 μm or less. Salts formed from other cations (e.g., sodium) may also be suitable. The pyrithione anti-dandruff active ingredient is described, for example, in U.S. Patent Nos. 2,809,971, 3,236,733, 3,753,196, 3,761,418, 4,345,080, 4,323,683, 4,379,753, and 4,470,982.

[0067] In one embodiment, the composition further comprises one or more antifungal and / or antibacterial active substances in addition to the anti-dandruff active substance selected from the polyvalent metal salts of pyrithione. In one embodiment, the antibacterial active substance is selected from the group consisting of coal tar, sulfur, charcoal, Whitfield's ointment, Castellani paint, aluminum chloride, gentian violet, octopirox (piroctone olamine), ciclopirox olamine, undecylenic acid and its metal salts, potassium permanganate, selenium sulfide, sodium thiosulfate, propylene glycol, bitter orange oil, urea preparation, griseofulvin, 8-hydroxyquinoline siloxinol, thiabendazole, thiocarbamate, haloprogin, polyene, hydroxypyridone, morpholine, benzylamine, allylamine (terbinafine, etc.), tea tree oil, clove leaf oil, coriander, palmarosa, berberine, thyme red, cinnamon oil, cinnamic aldehyde, citronellic acid, hinokitiol, ichthiol pearl, Sensiva SC-50, Elestab HP-100, azelaic acid, lyticase, iodopropynyl butylcarbamate (IPBC), isothiazolinones such as octyl isothiazolinone, and azole, and mixtures thereof. In one embodiment, the antibacterial agent is selected from the group consisting of itraconazole, ketoconazole, selenium sulfide, coal tar, and mixtures thereof.

[0068] In one embodiment, the azole antibacterial agent is an imidazole selected from the group consisting of benzimidazole, benzothiazole, bifonazole, butoconazole nitrate, clotrimazole, croconazole, econazole, eberconazole, econazole, erbionol, fenticonazole, fluconazole, flutimazole, isoconazole, ketoconazole, lanoconazole, metronidazole, miconazole, neticonazole, omoconazole, oxiconazole nitrate, sertaconazole, salconazole nitrate, tioconazole, thiazole, and mixtures thereof. Alternatively, the azole antibacterial agent is a triazole selected from the group consisting of terconazole, itraconazole, and mixtures thereof. When the azole antibacterial active ingredient is present in the hair care composition, it may be included in an amount of about 0.01 wt% to about 5 wt%, or about 0.1 wt% to about 3 wt%, or about 0.3 wt% to about 2 wt%. In one embodiment, the azole antibacterial active substance is ketoconazole. In one embodiment, the only antibacterial active substance is ketoconazole.

[0069] Embodiments of the hair care composition may also include a combination of antibacterial active ingredients. In one embodiment, the combination of antibacterial active substances is selected from the group of combinations consisting of octopirox and zinc pyrithione, pine tar and sulfur, salicylic acid and zinc pyrithione, salicylic acid and erbionol, zinc pyrithione and erbionol, zinc pyrithione and climbazole, octopirox and climbazole, salicylic acid and octopirox, and mixtures thereof.

[0070] In one embodiment, the hair care composition includes an effective amount of a zinc-containing layered material. In one embodiment, the hair care composition includes a zinc-containing layered material in an amount of about 0.001 wt% to about 10 wt%, or about 0.01 wt% to about 7 wt%, or about 0.1 wt% to about 5 wt% based on the total weight of the hair care composition.

[0071] The zinc-containing layered material may be one in which crystal growth occurs mainly two-dimensionally. The layer structure is not only described as one in which all atoms are incorporated into well-defined layers, but also as one in which there are ions or molecules between the layers, called gallery ions (A.F. Wells, "Structural Inorganic Chemistry", Clarendon Press, 1975). The zinc-containing layered material (ZLM) may incorporate zinc into the layers and / or may be a constituent of the gallery ions. The following categories of ZLM represent relatively common examples of general categories and are not intended to be limiting with respect to a broader range of materials that conform to this definition.

[0072] Many ZLMs occur naturally as minerals. In one embodiment, the ZLM is selected from the group consisting of hydrozincite (zinc carbonate hydroxide), hydrozincocuprite (zinc copper carbonate hydroxide), zinc malachite (copper zinc carbonate hydroxide), and mixtures thereof. Related minerals containing zinc may also be included in the composition. Natural ZLMs containing zinc gallery ions in which anionic layer species such as clay minerals (e.g., phyllosilicates) are ion-exchanged may also exist. All of these natural materials can also be obtained synthetically or formed in situ in the composition or during the manufacturing process.

[0073] Another common category of ZLMs, although not always, is layered double hydroxides. In one embodiment, the ZLM has the formula [M 2+ 1-x M 3+ x (OH)2] x+ A m- x / m ·nH2O (wherein the divalent ion (M 2+) is a layered double hydroxide that corresponds to (part or all of which is zinc ions) (Crepaldi, E.L., Pava, P.C., Tronto, J., Valim, J.B. J. Colloid Interfac. Sci. 2002, 248, 429 - 42).

[0074] Another class of ZLM called hydroxy double salts can also be prepared (Morioka, H., Tagaya, H., Karasu, M, Kadokawa, J, Chiba, K Inorg. Chem. 1999, 38, 4211 - 6). In one embodiment, the ZLM is of the formula [M 2+ 1-x M 2+ 1+x (OH) 3(1-y) + A n- (1=3y) / n ·nH2O, a hydroxy double salt where the two metal ions (M 2+ ) may be the same or different. When the metal ions are the same and represented by zinc, the formula simplifies to [Zn 1+x (OH)2] 2x+ 2xA - ·nH2O. This latter formula represents materials such as zinc hydroxy chloride and zinc hydroxy nitrate (when x = 0.4). In one embodiment, the ZLM is zinc hydroxy chloride and / or zinc hydroxy nitrate. These are also related to hydrozincite with monovalent anions replaced by divalent anions. Also, these materials can be formed in situ in the composition or during the manufacturing process.

[0075] In embodiments having a zinc - containing layered material and pyrithione or a polyvalent metal salt of pyrithione, the ratio of the zinc - containing layered material to pyrithione or the polyvalent metal salt of pyrithione is from about 5:100 to about 10:1, or from about 2:10 to about 5:1, or from about 1:2 to about 3:1.

[0076] The amount of the anti - dandruff active ingredient adhering to the scalp is at least about 1 microgram / cm 2 ​It is. Considering that the anti-dandruff active ingredient reaches the scalp and can surely exert its effect there, the amount of the anti-dandruff active ingredient adhering to the scalp is important. In one embodiment, the adhesion of the anti-dandruff active substance to the scalp is at least about 1.5 micrograms / cm 2 or at least about 2.5 micrograms / cm 2 or at least about 3 micrograms / cm 2 or at least about 4 micrograms / cm 2 or at least about 6 micrograms / cm 2 or at least about 7 micrograms / cm 2 or at least about 8 micrograms / cm 2 or at least about 8 micrograms / cm 2 or at least about 10 micrograms / cm 2 is. The amount of the anti-dandruff active ingredient adhering to the scalp is measured by a trained cosmetologist washing an individual's hair with a composition containing the anti-dandruff active ingredient, for example, the composition according to the present invention, according to a conventional washing protocol. Then, the hair is parted over the area of the scalp, and while holding an open-ended glass cylinder on the surface, an aliquot of the extraction solution is added and stirred, then recovered, and an analytical measurement is performed on the content of the anti-dandruff active ingredient based on a conventional method such as HPLC.

[0077] Product form The composition of the present invention may be in the form of a rinse-off product or a leave-on product, and may be formulated in a variety of product forms such as creams, gels, emulsions, mousses, and sprays, but is not limited thereto. The composition of the present invention is particularly suitable for conditioning compositions, particularly leave-on, leave-in, and / or no-rinse compositions. Leave-on and leave-in conditioning compositions are generally used on dry hair, semi-wet hair, and / or wet hair without rinsing off the composition. By no-rinse composition as meant herein is a hair care composition that is used on semi-wet hair to wet hair after shampooing and does not rinse off a no-rise hair care composition (such as a no-rinse hair conditioner).

[0078] Test method Rheology method Using a TA instruments rheometer (Discovery HR-3), a shear rate vs. viscosity sweep was performed. A 40 mm parallel steel plate was used at a temperature of 25 °C. The shear rate sweep was from 0.01 to 1000 1 / s with 10 points per decade and a sample period of 10 seconds. Data reports were at 1 1 / s and 10 1 / s, which are the relevant shear rates for product application and rinsing.

[0079] Adhesion method For each sample, approximately 0.5 g of hair was cut into segments over 40 mm and placed in a vial. First, the hair was gently extracted with hexane. Hexane extraction consisted of extracting the hair twice with hexane, then concentrating the dry residue with 2:1 chloroform:methanol and analyzing by gas chromatography (GC). Next, a more aggressive extraction using 2:1 and then 1:1 chloroform:methanol was used. The chloroform contained 10 mM dimethylhexylamine (DMHA) and 1% formic acid in methanol. Each extract was heated with the hair at 65 °C for 30 minutes, then combined, and the dry residue was redissolved in 2:1 chloroform:methanol and then analyzed by GC.

[0080] The safflower seed oil was quantified by GC with flame ionization detection using a polydimethylsiloxane capillary column with a hydrogen mobile phase. Trinonadecanoin was used as an internal standard with a calibration curve.

[0081] Hair treatment and combing method A tuft of hair 8 inches in length and weighing 4 g; three tufts per treatment leg were used for the adhesion and carding tests. A non-conditioning shampoo was applied at a dosage of 0.1 g / g (hair), lathered for 30 seconds, and then rinsed for 30 seconds. Excess water was wrung out of the tuft of hair, and then a conditioner with or without an oil blend was applied at a dosage of 0.1 g / g (hair), emulsified for 30 seconds, and then rinsed for 30 seconds. The hair was then dried in a hot box at approximately 65 °C for 30 minutes. This protocol was repeated for a total of 6 cycles.

[0082] This tuft of hair is tested for the force required to card each tuft of hair on an Instron (Model 5564) using a 50 N load cell. The tuft of hair is pre-combed before measurement and then positioned in a setting with two parallel combs (fine teeth) 7.2 cm apart. The hair is then pulled through the two combs, and the force exerted on the load cell is measured. This is repeated 5 times. This measurement is performed when wet and when the hair is dry after being left in a controlled humidity chamber at 50% RH and 22 °C for 24 hours. Force Mid1 is the friction of both combs through most of the hair, and Mid2 is the friction of the upper comb through most of the hair.

Example

[0083] In the following examples, embodiments within the scope of the present invention are further described and demonstrated. These examples are provided for illustrative purposes only and should not be construed as limiting the present invention since many modifications are possible without departing from the spirit and scope of the present invention. Where applicable, components are identified by chemical name or CTFA name, and where not, are defined below.

[0084]

Table 4

[0085]

Table 5

[0086]

Table 6

[0087]

Table 7

[0088] The dimensions and values disclosed in this specification should not be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise indicated, each such dimension is intended to mean both the recited value and the functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm".

[0089] All documents cited herein, including any patents or patent applications that are cross-referenced or related, and any patent applications or patents for which this application claims priority or the benefit thereof, are hereby incorporated by reference in their entirety, unless expressly excluded or limited. The citation of any document shall not be construed as an admission that it is prior art with respect to any invention disclosed or claimed herein, nor shall it be construed as teaching, suggesting, or disclosing any such invention, either alone or in combination with any other reference(s). Further, in the event that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition given to the term in this document shall apply.

[0090] While specific embodiments of the invention have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Accordingly, it is intended that all such changes and modifications within the scope of the invention be covered by the appended claims.

Claims

1. A hair care composition comprising: a. 1% to 3% by weight of safflower seed oil; b. 0.5% to 5% by weight of a low melting point wax selected from Citrus aurantium dulcis (orange) peel wax and Citrus limon (lemon) peel wax; c. A cationic surfactant; wherein the ratio of the safflower seed oil to the low melting point wax is from 85:15 to 60:

40. A hair care composition.

2. The hair care composition according to claim 1, further comprising a high melting point aliphatic compound selected from the group consisting of cetyl alcohol, stearyl alcohol, behenyl alcohol, and mixtures thereof.

3. The hair care composition according to claim 2, wherein the high melting point aliphatic compound can be included in the hair care composition at a level of 0.1% to 20% by weight.

4. The hair care composition according to any one of claims 1 to 3, which is a hair conditioner that is a rinse-off conditioner.

5. The hair care composition according to any one of claims 1 to 4, comprising 0.1% to 10% by weight of the cationic surfactant, wherein the cationic surfactant is selected from the group consisting of mono long-chain alkyl quaternized ammonium salts, combinations of mono long-chain alkyl quaternized ammonium salts and di long-chain alkyl quaternized ammonium salts, mono long-chain alkyl amidoamine salts, combinations of mono long-chain alkyl amidoamine salts and di long-chain alkyl quaternized ammonium salts, mono long-chain alkyl amine dodecylamine salts, combinations of mono long-chain alkyl quaternized ammonium salts, and combinations thereof.

6. The hair care composition according to any one of claims 1 to 5, comprising a gel matrix.

7. The hair care composition according to claim 6, wherein the gel matrix comprises a cationic surfactant, a high melting point aliphatic compound, and an aqueous carrier.

Images