Composition comprising discrete particles and a non-aqueous base

Abstract

A personal care composition comprising discrete particles of a mixed composition and a non-aqueous fluid-based composition. The mixed composition is made from a surfactant, a high-melting-point aliphatic compound, and any other optional components. The non-aqueous base is at least 75% fluid that is not a hydrogen donor.

Description

Technical Field

[0001] The present disclosure generally relates to personal care compositions containing discrete particles of a mixed composition and a non-aqueous base. More specifically, the present disclosure relates to discrete particles of a mixed composition comprising a surfactant and a high melting point aliphatic compound dispersed in a non-aqueous base comprising at least 75% of a fluid that is not a hydrogen donor.

Background Art

[0002] For hair conditioning, various techniques have been developed. A common method of providing a conditioning effect is by the use of 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 conditioning effects by the attachment of a conventional gel network within an aqueous chassis.

[0003] Another approach widely used by consumers is to apply hair oil or other anhydrous products to wet or dry hair to improve their manageability and softness. However, these hair oils do not have the effects provided by cationic surfactants and aliphatic compounds.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Therefore, there is still a need for non-aqueous hair care compositions that can still provide the conditioning effects desired and expected by consumers.

Means for Solving the Problems

[0005] A product composition comprising discrete particles of a mixed composition, the mixed composition comprising a surfactant and a high melting point aliphatic compound and a non-aqueous base, the non-aqueous base comprising at least 75% of a fluid that is not a hydrogen donor.

Brief Description of the Drawings

[0006] [Figure 1] This is a photograph of the initial appearance of the composition of the present invention. [Figure 2] This is a photograph of the appearance of the composition of the present invention after a 4-week stability test. [Figure 3] This is a photograph of the appearance of the comparative composition after a 4-week stability test.

Modes for Carrying Out the Invention

[0007] References to "embodiments" and the like in this specification mean that the specific materials, features, structures, and / or properties described in connection with that embodiment are included in at least one embodiment, optionally in a number of embodiments, but do not mean that the described materials, features, structures, and / or properties are incorporated into all embodiments. Further, the materials, features, structures, and / or properties can be combined in any suitable manner across different embodiments, and the materials, features, structures, and / or properties can be excluded from or substituted for those described. Thus, the embodiments and aspects described herein can include or be combined with elements or components of other embodiments and / or aspects, even if not explicitly illustrated in combination, unless otherwise explicitly described or incompatibility is described.

[0008] All component percentages described herein are by weight of the cosmetic composition unless otherwise specifically stated and may be expressed as "weight % (wt%)". Unless otherwise specifically stated, all ratios are weight ratios. All such percentages or weights relating to the listed components are based on activity levels and therefore do not include carriers or by-products that may be present in commercially available materials. Significant figures do not represent limitations on the quantities indicated or on the precision of the measurements. Unless otherwise specified, all measurements are understood to be performed under ambient conditions at approximately 25°C, where "ambient conditions" means 1 atmosphere and 50% relative humidity. All ranges include endpoints and are combinable. For example, all number ranges encompass narrower ranges, and the upper and lower limits of an indicated range are interchangeable to create further unindicated ranges.

[0009] The compositions of the present invention include, essentially consist of, or comprise the essential and optional components described herein. As used herein, “essentially consist of” means that a composition or component may include additional components, but only if the additional components do not substantially alter the basic and novel properties of the claimed composition or method. As used herein and in the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural form unless otherwise clearly indicated by the context.

[0010] "Approximately" modifies a specific value by indicating a range of ±20% or less of the stated value (for example, ±15%, ±10%, or ±5%).

[0011] "Mixture" refers to a simple combination of materials, and any compound that may result from such combinations.

[0012] Unless otherwise specified, "molecular weight" refers to the weight-average molecular weight. Molecular weight can be measured using gel permeation chromatography (GPC), an industry standard method.

[0013] "Non-aqueous" means that the material or composition contains less than 10% water (for example, less than 5%, 3%, 1%, or 0.5%, or in some cases 0%).

[0014] "Hydrogen donor" or "hydrogen bond donor" means a compound or functional group having a hydrogen atom bonded to an oxygen, nitrogen, fluorine, chlorine, or sulfur atom.

[0015] "Solid" means that the anhydrous discrete particles do not conform to the shape of a container in which the particles are kept at 25°C.

[0016] "Substantially not present" means less than 2% (for example, less than 1%, less than 0.5%, or even less than 0.1%) of the listed material or component. "Not present" means that there is no detectable amount of the listed material or component.

[0017] Personal care composition Conventional water-based hair care products, such as shampoos and conditioners, generally provide the hair care cleansing and conditioning effects that consumers expect. In some cases, consumers are known to apply conditioning oils to their hair before and / or after washing. Applying oil before washing is thought to nourish the hair and protect it during the washing process. Applying oil after washing may be done for manageability and styling.

[0018] The personal care compositions disclosed herein contain discrete particles of a mixed composition dispersed in a non-aqueous carrier. The products of the present invention can offer greater flexibility, improved visual / aesthetic appearance, improved stability, particularly when using smaller amounts of active substances such as surfactants and high-melting-point aliphatic compounds, and improved adhesion of beneficial agents compared to conventional gel network compositions. Preferably, the improved stability can be achieved without the use of thickening polymers.

[0019] The personal care products described herein may be hair care products, body care product compositions, facial skin care products, and mixtures thereof. In some examples, the personal care product is a hair conditioning product (e.g., a conditioning shampoo or conditioner). The personal care compositions described herein may be in the form of rinse-off or leave-on products and may be formulated in a wide variety of product forms, including but not limited to oils, gels, emulsions, mousses, and sprays. The personal care compositions described herein may be used, for example, for non-therapeutic treatments of hair, such as cleansing and / or conditioning. The personal care compositions may be particularly suitable for use as hair conditioners, especially as leave-on hair oils.

[0020] In some cases, personal care products may contain or substantially no cleansing surfactants. The cleansing surfactants described herein are selected from anionic surfactants, dipolar ionic surfactants, amphoteric surfactants, and combinations thereof.

[0021] mixed composition The mixed compositions described herein comprise a surfactant, a high-melting-point aliphatic compound, and optionally a beneficial agent. The surfactant and high-melting-point aliphatic compound are described in more detail below. From the viewpoint of having discrete particles of the mixed composition in the non-aqueous base composition and the product composition, and from the viewpoint of providing the product composition with greater flexibility and stability, as well as improved adhesion of the beneficial agent and improved visual / aesthetic appearance, the mixed compositions may be added to the product composition at concentrations of 0.01% to 70% (e.g., 0.01% to 50% or 0.05% to 30%).

[0022] Surfactants and high-melting-point aliphatic compounds may be present in the mixed composition in amounts of 10% to 99.9% (e.g., 20% to 99.9%, 40% to 99.9%, 60% to 99.9%, 80% to 99.9%, or even 100%) based on the weight of the mixed composition, with or without other components, from the viewpoint of having discrete particles of the mixed composition while containing other components such as beneficial agents in the non-aqueous base composition and personal care composition, and from the viewpoint of providing the product composition with at least one of the following: higher flexibility, improved stability, improved adhesion of beneficial agents, and improved visual / aesthetic appearance.

[0023] In addition to surfactants and high-melting-point aliphatic compounds, if the mixed composition contains water-insoluble, water-miscible, and water-soluble liquids, as well as any liquid such as water, it is also preferable to control the concentration of such liquids so that the total liquid concentration in the mixed composition may be a maximum of 30% by weight, 40% by weight, 50% by weight, 60% by weight, or even 92% by weight of the mixed composition, from the viewpoint of having discrete particles of the mixed composition in the non-aqueous base composition and the product composition.

[0024] If the liquid is a water-insoluble liquid such as silicone oil, a water-miscible liquid such as propylene glycol or glycerin, or a water-soluble liquid such as isopropyl alcohol (IPA) or ethanol, such liquid may be included in the mixed composition at a concentration of up to 30%, 40%, 50%, 60%, or even up to 90% by weight of the mixed composition.

[0025] When a mixed composition contains water, it may be desirable to limit the concentration of water to less than 50% by weight of the mixed composition (for example, less than 25% by weight, less than 15% by weight, less than 10% by weight, or even less than 8% by weight) from the viewpoint of having discrete particles of the mixed composition in the non-aqueous base composition and the product composition.

[0026] Surfactants and high-melting-point aliphatic compounds may be included in the mixed composition in such a weight ratio of 1:1 to 1:30 (for example, 1:10 to 1:30 or 1:10 to 1:20) to provide a desirable conditioning effect.

[0027] Beneficial agent of mixed composition The mixed composition may further contain beneficial agents in addition to surfactants and high-melting-point aliphatic compounds. The beneficial agents may be included in the mixed composition at a concentration of about 0.1% to about 90% by weight (for example, about 0.3% to about 60% by weight, about 0.5% to about 40% by weight, or even about 0.5% to about 30% by weight) from the viewpoint of providing the effects of the beneficial agents and from the viewpoint of having discrete particles of the mixed composition in the aqueous composition and the product composition.

[0028] Some non-limiting examples of beneficial agents that may be suitable for use herein include silicone compounds, fragrances (e.g., conventional fragrances, or fragrance microcapsules (PMCs) in which fragrances are encapsulated by a polymer outer layer), colorants (e.g., pigments or dyes that provide discrete particles having a different color from the color of the non-aqueous base composition), mixed compositions, discrete particles, and / or agents that are incompatible with at least one component contained in the non-aqueous base composition ("incompatible agents"), and mixtures thereof. In some embodiments, the incompatible agent may be a solid mineral or chemical substance having high ionic strength and / or high surface charge and prone to causing aggregation and / or crystallization (e.g., mica, salicylic acid, zinc pyrithione, and / or organic oil materials that interact undesirably with gel network components, such as hexyldecanol and isostearyl isostearate).

[0029] If the mixed composition contains silicone or a fragrance-enhancing agent, the mixed composition may be included in the personal care composition at a concentration of 0.1% to 70% (e.g., 0.5% to 50%, 1% to 30%, or even 2% to 20%). If the mixed composition contains a colorant or a mica-enhancing agent, the mixed composition may be included in the product composition at a concentration of 0.01% to 50% (e.g., 0.01% to 30%, 0.01% to 20%, or 0.05% to 10%).

[0030] Non-aqueous base The personal care compositions herein include a non-aqueous base, wherein at least 75% (e.g., at least 80%, 85%, 90%, or even 95% or more) of the non-aqueous base is a fluid that is not a hydrogen donor. In some embodiments, the fluid of the non-aqueous base may be 100% a fluid that is not a hydrogen donor, for example, a single fluid material that is not a hydrogen donor.

[0031] Conventionally, the combination of surfactants and high-melting-point aliphatic compounds as discrete particles in a base composition was carried out in an aqueous carrier. One reason for this was that it was thought that the particles could not be maintained as discrete particles, and that the particles would disintegrate too rapidly due to the relatively high solubility of the aliphatic compounds in the non-aqueous carrier.

[0032] By selecting a specific non-aqueous base, it was surprisingly found that the discrete particles could maintain their integrity. The inventors discovered that when the non-aqueous base is substantially composed of a material that is not a hydrogen donor, the discrete particles described herein do not dissolve in the non-aqueous base. By selecting a non-aqueous base containing at least 75% of a fluid that is not a hydrogen donor, the particles become less susceptible to decay over time when combined with the discrete particles. For example, the particles show no significant decay within four weeks when placed under high-temperature conditions (e.g., 40°C).

[0033] The non-aqueous base composition contains at least 75% of a fluid that is not a hydrogen donor, and the fluid may be an oil. The inventors have found that not all oils can be part of a conditioning formulation that does not disintegrate discrete particles. The inventors have found that oils that are not hydrogen donors can be successfully incorporated. The AlogP of the fluid is also relevant. Fluids that successfully incorporate without disintegrating discrete particles (as defined by the 4-week stability test method) include those having at least 6 AlogP.

[0034] The non-aqueous-based fluid may be an oil, and possibly a low-melting-point oil as defined herein as an oil having a melting point of 27°C or less (e.g., 25°C or less). Some non-limiting examples of low-melting-point oils useful herein include 1-decanol, isohexadecane, isododecane, triethylhexanoin, isodecyl oleate, decyl oleate, silicone quaternium-26, dimethicone, hydrocarbons having 10 to 40 carbon atoms, unsaturated aliphatic alcohols having 10 to 30 carbon atoms such as oleyl alcohol; unsaturated fatty acids having 10 to 30 carbon atoms; fatty acid derivatives; aliphatic alcohol derivatives; ester oils (e.g., pentaerythritol ester oils such as pentaerythritol tetraisostearate), trimethylol ester oils, citrate ester oils, glyceryl ester oils, poly-α-olefin oils such as polydecene, and mixtures thereof.

[0035] Other suitable oils may include triglycerides such as caprylic / capric triglyceride, or vegetable oils such as coconut oil, soybean oil, rapeseed oil, cocoa butter, olive oil, palm oil, rice bran oil, and mixtures thereof.

[0036] The additional non-aqueous-based fluids may include, but are not limited to, hydrocarbons, branched hydrocarbons, and more specifically, alkanes such as C13-C16 isoparaffins, isohexadecanes, pentadecanes, isododecanes, C15-19 alkanes, C9-12 alkanes, C13-15 alkanes, C14-22 alkanes, and coconut alkanes.

[0037] Furthermore, esters may also be suitable for use as non-aqueous fluids, and these esters include, but are not limited to, isobutyl palmitate, isodecyl oleate, decyl oleate, oleyl oleate, triethylhexanoin, isopropyl isostearate, isostearyl isostearate, myristyl myristate, isopropyl myristate, propylene glycol dicaprate, and diethylhexyl adipate.

[0038] The non-aqueous base fluid may or may not be a silicone compound, may contain a silicone compound, or may not contain a silicone compound. Silicone compounds are thought to be able to impart smoothness and softness to dry hair. The silicone compounds described herein can be used in the composition or in the non-aqueous base at concentrations of 0.1% to 99% by weight.

[0039] Useful agents for non-aqueous base compositions The non-aqueous base composition may contain 0.05% to 60% by weight (e.g., 0.1% to 30% by weight, 0.1% to 20% by weight, or 0.1% to 10% by weight) of beneficial agents. The beneficial agents may be present in the personal care composition in an amount of 0.05% to 30% by weight (e.g., 0.1% to about 15% by weight, 0.1% to 10% by weight, or 0.1% to about 7% by weight) of the personal care composition.

[0040] Some non-limiting examples of beneficial agents that may be suitable for use herein include silicone compounds, fragrances (e.g., conventional fragrances, or fragrance microcapsules (PMCs) in which fragrances are encapsulated by a polymer outer layer), colorants (e.g., pigments or dyes that provide a color different from the color of discrete particles in a non-aqueous base), miscible agents, and mixtures thereof.

[0041] If the personal care composition contains a beneficial agent, depending on the type of beneficial agent, it may provide at least one of the following effects: improved adhesion of the beneficial agent, and improved stability if it contains an incompatible agent.

[0042] discrete particles The personal care compositions described herein contain discrete particles of a mixed composition. The discrete particles are dispersed in a non-aqueous base composition and can be visually observed as discrete particles in the final product composition. For example, the particles can be observed with the naked eye of a person with 20 / 20 visual acuity at a distance of 25 cm under typical daylighting.

[0043] Discrete particles may be included in the product composition at a concentration of 0.1% to 70% by weight (e.g., 0.1% to 50% by weight or 0.1% to 30% by weight) in the product composition, from the viewpoint of providing at least one of the following: greater flexibility in the product composition, improved stability in the product composition, improved adhesion of beneficial agents, and improved visual / aesthetic appearance.

[0044] The discrete particles described herein may be of any shape, such as spherical, rectangular, diamond-shaped, planar (flake-like), or fibrous (e.g., elongated particles with an aspect ratio greater than 3:1).

[0045] The discrete particles constitute 100% of the mixed composition before being added to the non-aqueous base, i.e., they consist of the mixed composition and are solid. However, the particles are not an emulsion and are not coated or encapsulated by, for example, a polymer. The surfactant and high-melting-point aliphatic compound are present in the discrete particles at concentrations of 10% to 100% by weight (e.g., 20% to about 99% by weight, 40% to 95% by weight, 60% to 90% by weight, or even 80% to 85% by weight) of the discrete particles, with or without other components, from the viewpoint of having discrete particles of the mixed composition in the non-aqueous base composition and the product composition.

[0046] Unlike swellable silicone elastomers and swellable thickening polymers, the discrete particles described herein may not contain or may not substantially contain such swellable silicone elastomers and swellable thickening polymers. In the present invention, "discrete particles and mixed compositions substantially free of swellable silicone elastomers and swellable thickening polymers" means that the discrete particles and mixed compositions do not contain swellable silicone elastomers and swellable thickening polymers, or, if the discrete particles and mixed compositions contain swellable silicone elastomers and swellable thickening polymers, the concentration of such swellable silicone elastomers and swellable thickening polymers is very low.

[0047] Second discrete particle The product composition of the present invention may include a second discrete particle in addition to the discrete particle of the present invention, which comprises a mixture of a surfactant, a high-melting-point aliphatic alcohol, and a beneficial agent. The second discrete particle useful herein comprises a mixture excluding the beneficial agent, i.e., a mixture comprising a surfactant and a high-melting-point aliphatic compound. The components and properties of the second discrete particle are the same as those described for the discrete particle of the present invention, except that it contains a beneficial agent.

[0048] Cationic surfactants The mixed composition and / or base composition may contain a cationic surfactant. Some non-limiting examples of cationic surfactants include mono-long-chain alkyl quaternization ammonium salts; combinations of mono-long-chain alkyl quaternization ammonium salts and di-long-chain alkyl quaternization ammonium salts; mono-long-chain alkylamines; and combinations of mono-long-chain alkylamines and di-long-chain alkyl quaternization ammonium salts.

[0049] Long-chain alkyl quaternary ammonium salts Cationic surfactants may be mono- or di-long-chain alkylquaternization ammonium salts having one or two long-chain alkyl chains each having 12 to 30 carbon atoms (e.g., 16 to 24 carbon atoms or 18 to 22 carbon atoms). The remaining group bonded to nitrogen 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. Exemplary chemical structures of long-chain alkylquaternization ammonium salts are described in U.S. Patent No. 11,633,338. When used, di-long-chain alkylquaternization ammonium salts may be combined with mono-long-chain alkylquaternization ammonium salts or mono-long-chain alkylamine salts in a weight ratio of 1:1 to 1:5 (e.g., 1:1.2 to 1:5, or 1:1.5 to 1:4) from the viewpoint of rheological effect and stability of conditioning effect.

[0050] Non-limiting examples of mono-long-chain alkyl quaternary ammonium salt cationic surfactants that may be suitable for use herein include behenyltrimethylammonium salt; stearyltrimethylammonium salt; cetyltrimethylammonium salt; and hydrogenated tulloalkyltrimethylammonium salt. Some non-limiting examples of di-long-chain alkyl quaternary ammonium salt cationic surfactants that may be suitable for use herein include dialkyl(14-18)dimethylammonium chloride; ditaloalkyldimethylammonium chloride; dihydrogenated tulloalkyldimethylammonium chloride; distearyldimethylammonium chloride; and dicetyldimethylammonium chloride.

[0051] Monolong-chain alkylamines The cationic surfactants described herein may include long-chain alkylamine cationic surfactants having one long-chain alkyl chain of 12 to 30 carbon atoms (e.g., 16 to 24 carbon atoms or 18 to 22 carbon atoms). Examples of long-chain alkylamines described herein include monolong-chain alkylamidoamines. Primary, secondary, and tertiary aliphatic amines may be useful. Particularly useful are tertiary amidoamines having alkyl groups of approximately 12 to 22 carbon atoms. Examples of tertiary amide amines include stearamidopropyldimethylamine, stearamidopropyldiethylamine, stearamidoethyldiethylamine, stearamidoethyldimethylamine, palmitamidopropyldimethylamine, palmitamidopropyldiethylamine, palmitamidoethyldiethylamine, palmitamidoethyldimethylamine, behenamidopropyldimethylamine, behenamidopropyldiethylamine, behenamidoethyldiethylamine, behenamidoethyldimethylamine, arachidamidopropyldimethylamine, arachidamidopropyldiethylamine, arachidamidoethyldiethylamine, arachidamiethyldimethylamine, and diethylaminoethylstearamide. Several additional, non-limiting examples of amines that may be suitable for use herein are disclosed in U.S. Patent No. 4,275,055.

[0052] These amines include 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; more preferably, they can be used in combination with acids such as L-glutamic acid, lactic acid, and citric acid in a molar ratio of amine to acid of 1:0.3 to 1:2 (e.g., about 1:0.4 to about 1:1).

[0053] High melting point aliphatic compounds The mixed composition and optionally the base composition contain a high-melting-point aliphatic compound to provide hair conditioning effects such as reduced hair friction, ease of product spread, and / or ease of detangling hair, compared to compositions that do not contain a high-melting-point aliphatic compound and / or compositions that contain a low-melting-point aliphatic compound instead of a high-melting-point aliphatic compound. The high-melting-point aliphatic compound can also provide improved product stability (e.g., reduced risk of phase separation) compared to compositions that do not contain a high-melting-point aliphatic compound and / or compositions that contain a low-melting-point aliphatic compound instead of a high-melting-point aliphatic compound.

[0054] High-melting-point aliphatic compounds useful herein have a melting point of 25°C or higher (e.g., 40°C or higher, 45°C or higher, and even 50°C or higher), but typically have a melting point of less than 90°C (e.g., less than 80°C, less than 70°C, or less than 65°C) from the viewpoint of easier production and easier emulsification. The high-melting-point aliphatic compound may be a single compound or a blend or mixture of two or more aliphatic compounds. When used as such a blend or mixture, the melting point of the blend or mixture of aliphatic compounds is 25°C or higher (e.g., 40°C or higher, 45°C or higher, and even 50°C or higher).

[0055] Some non-limiting examples of high-melting-point aliphatic compounds that may be useful herein include aliphatic alcohols, fatty acids, aliphatic alcohol derivatives, fatty acid derivatives, and mixtures thereof. The exemplified aliphatic compounds may belong to two or more classifications; for example, some aliphatic alcohol derivatives may also be classified as fatty acid derivatives. However, given classifications are not intended to limit any particular compound, but are made for the convenience of classification and nomenclature. Furthermore, it should be understood that certain compounds having certain essential carbon atoms, depending on the number and position of double bonds, and the length and position of branching, may have melting points below the preferred melting points in the present invention. 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.

[0056] Among various high-melting-point aliphatic compounds, aliphatic alcohols, particularly those having 14 to 30 carbon atoms (e.g., 16 to about 22 carbon atoms), may be particularly suitable for use in the personal care products described herein. These aliphatic alcohols may be saturated or unsaturated, and may be linear or branched alcohols. Some particularly suitable aliphatic alcohols include, for example, cetyl alcohol (with a melting point of about 56°C), stearyl alcohol (with a melting point of about 58 to 59°C), behenyl alcohol (with a melting point of about 71°C), and mixtures thereof. In some embodiments, the aliphatic alcohol is a mixture of cetyl alcohol and stearyl alcohol, with a weight ratio of cetyl alcohol to stearyl alcohol of 1:9 to 9:1 (e.g., 1:4 to 4:1 or 1:2.3 to 1.5:1).

[0057] Silicone compounds The non-aqueous base composition may contain (or consist of) a silicone compound. The silicone compound may have a weight-average particle size of 10 nm to 100 μm (e.g., 0.1 μm to 100 μm, 1 μm to 50 μm) in the non-aqueous base composition. The silicone compound may exist as a single compound or as a blend or mixture of two or more silicone compounds. The silicone compound may have a viscosity of 1,000 mPa·s to 2,000,000 mPa·s at 25°C, as measured using a glass capillary viscometer according to Dow Corning Corporate Test Method CTM0004, July 20, 1970. Some non-limiting examples of silicone fluids that may be suitable for use herein include polyalkylsiloxanes, polyarylsiloxanes, polyalkylarylsiloxanes, polyethersiloxane copolymers, amino-substituted silicones, quaternary silicones, and mixtures thereof. In some examples, amino-substituted silicones and / or quaternary silicones may be preferred.

[0058] Some non-limiting examples of polyalkylsiloxanes include polydimethylsiloxane, polydiethylsiloxane, and polymethylphenylsiloxane. Polydimethylsiloxane, also known as dimethicone, is particularly preferred. These silicone compounds are available, for example, from General Electric Company in its Viscasila and TSF451 series, and from Dow Corning in its Dow Corning SH200 series. The above polyalkylsiloxanes are available, for example, as mixtures with silicone compounds having lower viscosity. Such mixtures have viscosities of 1,000 mPa·s to 100,000 mPa·s (e.g., 5,000 mPa·s to about 50,000 mPa·s). Such mixtures may comprise (i) a first silicone compound having a viscosity of 100,000 mPa·s to 30,000,000 mPa·s (e.g., 100,000 mPa·s to 20,000,000 mPa·s) at 25°C, and (ii) a second silicone compound having a viscosity of 5 mPa·s to 10,000 mPa·s (e.g., 5 mPa·s to 5,000 mPa·s) at 25°C. Examples of such mixtures useful herein include, for example, a blend of dimethicone with a viscosity of 18,000,000 mPa·s, available from GE Toshiba, and dimethicone with a viscosity of 200 mPa·s, and a blend of dimethicone with a viscosity of 18,000,000 mPa·s, available from GE Toshiba, and cyclopentasiloxane. Useful silicone compounds in this specification include silicone rubber, which is a polyorganosiloxane material having a kinematic viscosity of 1,000,000 centistokes or more at 25°C. It is recognized that the silicone rubber described herein may overlap somewhat with the silicone compounds disclosed above. This overlap is not intended to limit any of these materials. "Silicone rubber" typically has a molecular weight of over approximately 200,000, and generally between 200,000 and 1,000,000.Specific examples include polydimethylsiloxane, poly(dimethylsiloxane methylvinylsiloxane) copolymer, poly(dimethylsiloxane diphenylsiloxane methylvinylsiloxane) copolymer, and mixtures thereof. Silicone rubber is available, for example, as a mixture with a silicone compound having a lower viscosity. Such mixtures useful herein include, for example, the rubber / cyclomethicone blends available from Shin-Etsu.

[0059] In some examples, the silicone compound has the general formula (I): (R1) a G 3-a -Si-(-OSiG2) n -(-OSiG b (R1) 2-b ) m -O-SiG 3-a (R1) a (I) and may include amino-substituted silicones (aminosilicones) conforming to, where G is hydrogen, phenyl, hydroxy, or C1-C8 alkyl, preferably methyl, a is an integer having a value of 0, or 1-3, preferably 1, b is 0, 1, or 2, preferably 1, n is a number from 0-1,999, m is an integer from 0-1,999, the sum of n and m is a number from 1-2,000, neither a nor m is 0, and R1 is a monovalent radical conforming to the general formula CqH 2q L, where q is an integer having a value of 2-8, and L is -N(R₂)CH₂-CH₂-N(R₂)₂, -N(R₂)₂, -N(R₂)₃A - 、-N(R₂)CH₂-CH₂-NR₂H₂A - 、selected from the groups of, R₂ is hydrogen, phenyl, benzyl, or a saturated hydrocarbon radical, preferably an alkyl radical of about C1-about C 20 and A - is a halide ion.

[0060] Particularly preferred aminosilicones include those corresponding to formula (I), where m=0, a=1, q=3, G=methyl, n is 1500-1700 (e.g., about 1600), and L is -N(CH3)2 or -NH2. Another particularly preferred aminosilicone corresponds to formula (I), where m=0, a=1, q=3, G=methyl, n is 400-600 (e.g., about 500), and L is -N(CH3)2 or -NH2. Such highly preferred aminosilicones can be called terminal aminosilicones because one or both ends of the silicone chain are terminated by nitrogen-containing groups.

[0061] When the above aminosilicones are incorporated into personal care compositions or non-aqueous bases, they can be mixed with solvents having lower viscosity. Examples of such solvents include polar or nonpolar volatile or non-volatile oils. Examples of such oils include silicone oils, hydrocarbons, and esters, selected from the group consisting of nonpolar volatile hydrocarbons, volatile cyclic silicones, non-volatile linear silicones, and mixtures thereof. Non-volatile linear silicones useful herein have a viscosity of about 1 to about 20,000 centistokes, preferably about 20 to about 10,000 centistokes, at 25°C. Among the preferred solvents, nonpolar and volatile hydrocarbons, particularly nonpolar and volatile isoparaffins, are highly preferred in terms of reducing the viscosity of the aminosilicone and providing improved hair conditioning effects, such as reduced friction in dry hair. Such mixtures preferably have a viscosity of about 1,000 mPa·s to about 100,000 mPa·s, more preferably about 5,000 mPa·s to about 50,000 mPa·s.

[0062] Other suitable alkylamino-substituted silicone compounds include those having alkylamino substitution as the pendant group of the silicone main chain. A particularly preferred type is known as "amodimethicone." A commercially available amodimethicone useful herein is, for example, BY16-872, available from Dow Corning.

[0063] Silicone polymer containing quaternary groups Examples of useful silicone compounds in this specification include quaternary group-containing silicone polymers that contain terminal ester groups and have a viscosity of up to 100,000 mPa·s and a D-block length greater than 200 D units. While not bound by theory, these low-viscosity silicone polymers provide improved conditioning effects such as a smooth feel, reduced friction, and prevention of hair damage, while eliminating the need for silicone blends.

[0064] Structurally, the silicone polymer is a polyorganosiloxane compound comprising one or more quaternary ammonium groups, at least one silicone block containing more than 200 siloxane units, at least one polyalkylene oxide structural unit, and at least one terminal ester group. In one or more embodiments, the silicone block may contain 300 to 500 siloxane units.

[0065] The silicone polymer is present in the personal care composition in an amount of 0.05% to 15% by weight (e.g., 0.1% to 10% by weight, 0.15% to 5% by weight, or 0.2% to 4% by weight).

[0066] Polyorganosiloxane compounds are classified by general formulas (Ia) and (Ib): MY-[-(N + R2-TN + R2)-Y-] m -[-(NR 2 -AE-A'-NR 2 )-Y-] k -M(Ia) MY-[-(N + R2-TN + R2)-Y-] m -[-(N + R 2 2-AE-A'-N + R 2 2)-Y-] k -M(Ib) It may have, in the formula, m is > 0, 0.01 to 100 (for example, 0.1 to 100, 1 to 100, 1 to 50, 1 to 20, or 1 to 10), k is either 0 or an average value greater than 0 and up to 50 (for example, 1 to 20 or 1 to 10). M is as follows: -OC(O)-Z -OS(O)2-Z, -OS(O2)OZ, -OP(O)(OZ)OH, - Represents a terminal group containing a terminal ester group selected from OP(O)(OZ)2, Z represents a terminal group containing a terminal ester group, which is selected from monovalent organic residues having up to 40 carbon atoms and possibly containing one or more heteroatoms.

[0067] A and A' are each independently selected from single bonds or divalent organic groups having up to 10 carbon atoms and one or more heteroatoms. E is a polyalkylene oxide group with the following general formula: -[CH2CH2O] q -[CH2CH(CH3)O] r -[CH2CH(C2H5)O] s - In the equation, q is between 0 and 200, r is between 0 and 200, s is between 0 and 200, and q + r + s = 1 to 600.

[0068] R 2 is selected from hydrogen or R, R is selected from a monovalent organic group having up to 22 carbon atoms and optionally one or more heteroatoms, with the free valence of the nitrogen atom bonded to the carbon atom. Y is the basis of the following equation, -KSK- and -AE-A'- or -A'-EA- (In the formula, S is

[0069] [ka] In the formula, R1 is C1~C 22 Alkyl, C1-C 22 The group is fluoroalkyl or aryl, n is 200 to 1000, and if several S groups are present in the polyorganosiloxane compound, these may be the same or different.

[0070] K is divalent or trivalent linear, cyclic, and / or branched C2-C 40 These are hydrocarbon residues, which can be optionally -O-, -NH-, trivalent N, or -NR. 1 -, -C(O)-, -C(S)-, optionally substituted with -OH, in the formula, R 1 (as defined above), T is selected from divalent organic groups having up to 20 carbon atoms and one or more heteroatoms.

[0071] The residues K may be identical or different from each other. In the -KSK- moiety, residue K is bonded to the silicon atom of residue S via a C-Si bond.

[0072] A amine group (-(NR) is present in the polyorganosiloxane compound. 2 -AE-A'-NR 2 Due to the possibility of the presence of )-), these compounds may have a protonated ammonium group, resulting from the protonation of such an amine group by an organic or inorganic acid. Such compounds are sometimes called acid addition salts of polyorganosiloxane compounds.

[0073] The molar ratio of the quaternary ammonium group b) to the terminal ester group c) may be less than 100:20 (for example, less than 100:30 or less than 100:50). This ratio is 13 This can be determined by 13C-NMR.

[0074] Polyorganosiloxane compositions, A) at least one polyorganosiloxane compound comprising a) at least one polyorganosiloxane group, b) at least one quaternary ammonium group, c) at least one terminal ester group, and d) at least one polyalkylene oxide group (as defined above), B) may also include at least one polyorganosiloxane compound having at least one terminal ester group different from compound A).

[0075] In defining component A), refer to the description of polyorganosiloxane compounds herein. Polyorganosiloxane compound B) may differ from polyorganosiloxane compound A) in that it does not contain a quaternary ammonium group. Polyorganosiloxane compound B) arises from the reaction of a monofunctional organic acid, particularly a carboxylic acid, with a polyorganosiloxane containing a bisepoxide.

[0076] When present in a personal care composition, the weight ratio of compound A) to compound B) may be less than 90:10 (i.e., component B) is present in at least 10 weight percent). The molar ratio of quaternary ammonium group b) and terminal ester group c) of the polyorganosiloxane composition in compound A) may be less than 100:10 (e.g., less than 100:15 and less than 100:20).

[0077] The silicone polymer was tested at 20°C and a shear rate of 0.1 s. -1 In a plate-plate system (plate diameter 40 mm, gap width 0.5 mm), the viscosity is less than 100,000 mPa·s (100 Pa·s). In further embodiments, the viscosity of the undiluted silicone polymer may be in the range of 500 to 100,000 mPa·s (e.g., 500 to 70,000 mPa·s, 500 to 50,000 mPa·s, or 500 to 20,000 mPa·s). In further embodiments, the viscosity of the undiluted polymer is at 20°C and a shear rate of 0.1 s. -1 The measurement can range from 500 to 10,000 mPa·s (for example, 500 to 5,000 mPa·s).

[0078] The following general formula: -[CH2CH2O] q -[CH2CH(CH3)O] r -[CH2CH(C2H5)O] s - In the polyalkylene oxide group E, q, r, and s can be defined as follows: q = 0 to 200 (for example, 0 to 100, 0 to 50, or even 0 to 20), r = 0 to 200 (for example, 0 to 100, 0 to 50, or even 0 to 20), s = 0 to 200 (for example, 0 to 100, 0 to 50, or even 0 to 20), and q + r + s = 1 to 600 (for example, 1 to 100, 1 to 50, or even 1 to 40).

[0079] In polyorganosiloxane structural units having the general formula S,

[0080] [ka] R 1 C1~C 22 Alkyl, C1-C 22 The fluoroalkyl and aryl groups are fluoroalkyl and aryl, where n is 200-1000 (e.g., 300-500), and K (in the -KSK- group) is preferably divalent or trivalent linear, cyclic, or branched C2-C2. 20 These are hydrocarbon residues, which can be optionally -O-, -NH-, trivalent N, or -NR. 1 It is interrupted by -, -C(O)-, and -C(S)-, and optionally substituted with -OH.

[0081] In some examples, R 1 C1~C 18 Alkyl, C1-C 18 Fluoroalkyl and aryl (e.g., C1-C) 18 These are alkyl, C1-C6 fluoroalkyl, and aryl alkyl groups. In other examples, R 1These are C1-C6 alkyl and C1-C6 fluoroalkyl. In other examples, R 1 These are C1-C4 fluoroalkyl and phenyl compounds. 1 It may be particularly desirable that the compounds be methyl, ethyl, trifluoropropyl, and phenyl.

[0082] When used in this specification, "C1~C 22 The term "alkyl" refers to an aliphatic hydrocarbon group having 1 to 22 carbon atoms, which may be linear or branched. Examples include methyl, ethyl, propyl, n-butyl, pentyl, hexyl, heptyl, nonyl, decyl, undecyl, isopropyl, neopentyl, and 1,2,3-trimethylhexyl moieties.

[0083] Furthermore, when used in this specification, "C1~C 22 The term "fluoroalkyl" refers to an aliphatic hydrocarbon compound having 1 to 22 carbon atoms, which may be linear or branched, and which is substituted with at least one fluorine atom. Preferred examples include monofluormethyl, monofluoroethyl, 1,1,1-trifluorethyl, perfluoroethyl, 1,1,1-trifluoropropyl, and 1,2,2-trifluorobutyl.

[0084] Furthermore, the term "aryl" refers to unsubstituted or phenyl molecules that are substituted once or multiple times with OH, F, Cl, CF3, C1-C6 alkyl, C1-C6 alkoxy, C3-C7 cycloalkyl, C2-C6 alkenyl, or phenyl. "Aryl" can also refer to naphthyl molecules.

[0085] Regarding embodiments of polyorganosiloxanes, the positive charge originating from the ammonium group is derived from inorganic anions such as chloride, bromide, hydrogen sulfate, or sulfate, or C1-C 30 Carboxylates derived from carboxylic acids, such as acetates, propionates, octanoates, and especially C 10 ~C 18They are neutralized by organic anions such as carboxylates derived from carboxylic acids, e.g., decanoates, dodecanoates, tetradecanoates, hexadecanoates, octadecanoates, and oleates; alkyl polyether carboxylates, alkyl sulfonates, aryl sulfonates, alkylaryl sulfonates, alkyl sulfates, alkyl polyether sulfates; and phosphates derived from monoalkyl / aryl phosphates and dialkyl / aryl phosphates. The properties of polyorganosiloxane compounds can be modified, in particular, based on the choice of acid used.

[0086] The above polyorganosiloxane compounds containing quaternary ammonium functional groups and ester functional groups may also include 1) individual molecules containing quaternary ammonium functional groups but not ester functional groups, 2) molecules containing quaternary ammonium functional groups and ester functional groups, and 3) molecules containing ester functional groups but not quaternary ammonium functional groups. Although not limited to the structure, the above polyorganosiloxane compounds containing quaternary ammonium functional groups and ester functional groups should be understood as mixtures of molecules containing specific average amounts and ratios of both parts.

[0087] Various monofunctional organic acids can be used to obtain esters. Exemplary embodiments include C1-C 30 Carboxylic acids, for example, C2, C3, C8 acids, C 10 ~C 18 Carboxylic acids, for example, C 12 , C 14 , C 16 Acids, saturated, unsaturated, and hydroxyl-functionalized C 18 Examples include acids, alkyl polyether carboxylic acids, alkyl sulfonic acids, aryl sulfonic acids, alkylaryl sulfonic acids, alkyl sulfuric acids, alkyl polyether sulfuric acids, monoalkyl / aryl phosphates, and dialkyl / aryl phosphates.

[0088] Additional ingredients The non-aqueous base composition of the present invention may contain other additional components, which may be selected by those skilled in the art depending on the desired properties of the final product, and which are suitable for making the composition more aesthetically pleasing or aesthetically acceptable, or for providing additional effects to the composition through additional use. Such other additional components are generally used individually at concentrations of 0.001% to 10%.

[0089] A wide variety of other additional components can be incorporated into the composition of the present invention. These include other conditioning agents (e.g., hydrolyzed collagen under the trade name "Peptein 2000" available from Hormel, vitamin E under the trade name "Emix-d" available from Eisai, panthenol available from Roche, panthenyl ethyl ether available from Roche, hydrolyzed keratin, proteins, plant extracts, and nutrients); preservatives (such as benzyl alcohol, methylparaben, propylparaben, and imidazolidinyl urea); pH adjusters (such as citric acid, sodium citrate, succinic acid, phosphoric acid, sodium hydroxide, and sodium carbonate); colorants (such as either FD&C or D&C dyes); fragrances; ultraviolet and infrared blocking and absorbing agents (e.g., benzophenone); and anti-dandruff agents (e.g., zinc pyrithione).

[0090] Method for preparing a product composition The product composition of the present invention can be prepared, for example, by the following method A or method B.

[0091] Method A For example, a mixed composition comprising a surfactant, a high-melting-point aliphatic compound, and a beneficial agent is prepared, as described in more detail below. For example, a non-aqueous base composition comprising at least 75% of a fluid that is not a hydrogen donor is prepared separately, as described below. The mixed composition and the non-aqueous base composition are mixed to form discrete particles of the mixed composition dispersed in the non-aqueous base composition. When mixed, the mixed composition and the non-aqueous base composition each have a temperature lower than the melting point of the high-melting-point aliphatic compound. When mixed, the mixed composition has a temperature lower than the melting point of the high-melting-point aliphatic compound contained in the mixed composition, and the mixed composition has such a temperature during and after mixing with the non-aqueous base composition. The non-aqueous base composition also has a temperature lower than the melting point of the high-melting-point aliphatic compound contained in the mixed composition when mixed with the mixed composition, and has such a temperature during and after mixing with the mixed composition. Therefore, when mixed, the mixed composition and the non-aqueous base composition each have a temperature at least 2°C lower (e.g., 5°C lower, 10°C lower, or 15°C lower) than the melting point of the high-melting-point aliphatic compound. When mixed, the mixed composition and the non-aqueous base composition each have a temperature of about 0°C to about 50°C (e.g., 10°C to 40°C or 15°C to 35°C).

[0092] Method B For example, a mixed composition comprising a surfactant, a high-melting-point aliphatic compound, and a beneficial agent is prepared, as described in more detail below. For example, a non-aqueous base composition comprising at least 75% of a fluid that is not a hydrogen donor is prepared separately, as described below. The discrete particles and the non-aqueous base composition are mixed to disperse the discrete particles in the non-aqueous base composition. The discrete particles may be solid. A solvent or carrier may be used to prepare the discrete particles of the mixed composition. Such solvents and carriers are considered components of the non-aqueous base composition when calculating the amounts of components. When mixed, the discrete particles and the non-aqueous base composition each have a temperature lower than the melting point of the high-melting-point aliphatic compound. When mixed, the discrete particles have a temperature lower than the melting point of the high-melting-point aliphatic compound contained in the discrete particles, and the discrete particles have such a temperature during and after mixing with the non-aqueous base composition. Furthermore, when the non-aqueous base composition is mixed with the discrete particles, it is preferable that it has a temperature lower than the melting point of the high-melting-point aliphatic compound contained in the discrete particles, and that it has such a temperature during or after mixing with the discrete particles. When mixed, the discrete particles and the non-aqueous base composition each have a temperature preferably at least 2°C lower (e.g., 5°C lower, 10°C lower, or 15°C lower) than the melting point of the high-melting-point aliphatic compound. When mixed, the discrete particles and the non-aqueous base composition each have a temperature of 0°C to 50°C (e.g., 10°C to 40°C or 15°C to 35°C).

[0093] Preparation of mixed compositions In both Method A and Method B, the mixed composition is a mixed composition comprising a surfactant and a high-melting-point aliphatic compound, wherein the temperature of the mixed composition is higher than the melting point of the high-melting-point aliphatic compound contained in the mixed composition, and is prepared by preparing the mixed composition and then cooling the mixed composition to a temperature lower than the melting point of the high-melting-point aliphatic compound. In Method B, discrete particles can be prepared simultaneously with the preparation of the mixed composition during the cooling step, or they can be prepared after the mixed composition has been formed.

[0094] The temperature of the molten mixture is at least 2°C (e.g., 5°C, 10°C, or 15°C) higher than the melting point of the high-melting-point aliphatic compound. The temperature of the molten mixture may be 30°C to 150°C (e.g., 40°C to 100°C, 50°C to 95°C, 55°C to 90°C, or 66°C to 90°C). Preferably, the molten mixture is cooled to a temperature lower than the melting point of the high-melting-point aliphatic compound contained in the mixture, i.e., at least 2°C lower than the melting point of the high-melting-point aliphatic compound contained in the mixture. In some examples, the mixture may be cooled to a temperature of -200°C to about 50°C (e.g., -40°C to 50°C or 0°C to about 30°C).

[0095] When the mixed composition contains beneficial agents If the mixed composition further contains beneficial agents, the following steps apply to the mixed composition: A step of preparing a molten mixed composition containing a surfactant and a high-melting-point aliphatic compound, wherein the temperature of the molten mixed composition is higher than the melting point of the high-melting-point aliphatic compound contained in the mixed composition. The mixture can be prepared by the following steps: a step of forming a mixed composition by cooling a molten mixed composition to a temperature lower than the melting point of a high-melting-point aliphatic compound contained in the mixed composition, wherein beneficial agents can be added at any time depending on the properties of the beneficial agent, for example, the beneficial agent can be added to the mixed composition before cooling, during cooling, or after cooling, preferably immediately after cooling, such as within 30 minutes after cooling, especially when using volatile beneficial agents such as fragrances.

[0096] If the mixed composition contains a beneficial agent, the beneficial agent can be homogeneously mixed with the mixed composition, and homogeneous discrete particles can be formed in the composition.

[0097] Alternatively, in discrete particles, the beneficial agent can form an inner core covered by an outer shell formed by a mixed composition.

[0098] When a beneficial agent is included in a non-aqueous base composition If the non-aqueous base composition contains a beneficial agent, the beneficial agent can be homogeneously mixed with the non-aqueous base composition.

[0099] If the non-aqueous base composition contains a beneficial agent, the beneficial agent may be added to the non-aqueous base composition at any time, for example, before adding the mixed composition and / or discrete particles, after adding the mixed composition and / or discrete particles, and / or simultaneously with the discrete particles.

[0100] Test method 4-week stability test: This is a stability test method, specifically a test method for determining failure / success due to collapse.

[0101] Add 0.2 g of discrete particles to 99.8 g of a non-aqueous base and place in a constant temperature room at 40°C. Check the appearance of the non-aqueous base and discrete particles after 4 weeks. The mixture should be placed in a see-through container to aid in evaluation.

[0102] Figure 1 shows an example of the initial appearance of a sample in which formulation was successful, i.e., discrete particles were formed in a non-aqueous base. Figure 1 is an initial photograph of Example 3 of the present invention (i.e., immediately after the example was prepared), and is a good representation of the appearance of either the initial example of the present invention or the comparative example.

[0103] Figure 2 shows an example of a composition of the present invention having stable discrete particles after 4 weeks under a 4-week stability test. After 4 weeks, the discrete particles remain discrete without decaying. For a composition to be considered stable, all particles must remain discrete and intact. The particles may change in their absolute size or volume, but they must still remain discrete. Figure 2 is a photograph of Example 5 of the present invention after 4 weeks under a 4-week stability test.

[0104] Figure 3 shows an example of discrete particle decay after 4 weeks under a 4-week stability test. In this comparative example, discrete particles were initially incorporated but did not remain stable; instead, the discrete particles decayed and / or dissolved. Figure 3 is a photograph of Comparative Example 1 taken after 4 weeks under a 4-week stability test.

[0105] In examples or comparative examples that are not part of the present invention, the presence of a hydrogen donor in a non-aqueous base composition results in higher polarity, and therefore higher interaction and compatibility between the discrete particles and the non-aqueous base composition. This higher compatibility and interaction ultimately leads to the breakdown or dissolution of the non-aqueous composition, based on the concept of "like dissolves like." Thus, stability is achieved when the non-aqueous base contains at least about 75% fluid that is not a hydrogen donor.

[0106] ALogP: ALogP is the octanol / water partition coefficient that represents the hydrophilicity or hydrophobicity of a molecule. As used herein, "AlogP" refers to an index of the octanol / water partition coefficient of an active substance. Ghose and Crippen used this atom-based method to calculate the octanol-water partition coefficient (logP) and the molar refractive index (MR) of the influent molecules. While LogP provides a measure of the molecule's hydrophobicity, MR contains information about molecular volume and polarizability. In this specification, AlogP is calculated using Pipeline Pilot software (Biovia®) ver 9.2.

[0107] Method for preparing a product composition The embodiment disclosed and represented in Figure 3 is a hair conditioning product composition of the present invention, prepared by method B described above, and is described in more detail below: A mixed composition containing a surfactant, a high-melting-point aliphatic compound, and a beneficial agent was prepared by the following method: Prepare a molten mixed composition in which the temperature of the molten mixed composition is higher than the melting point of the high-melting-point aliphatic compound contained in the mixed composition, i.e., about 66°C to about 90°C; The molten mixed composition is cooled to a temperature lower than the melting point of the high-melting-point aliphatic compound contained in the mixed composition, i.e., approximately 0°C to approximately 40°C, to form the mixed composition; Prepare solid discrete particles consisting of a mixed composition; Prepare a non-aqueous base composition separately; The discrete particles and the non-aqueous base composition are mixed so that the discrete particles are dispersed in the non-aqueous base composition, with both having a temperature lower than the melting point of the high-melting-point aliphatic compound contained in the mixed composition, i.e., a temperature of about 10°C to about 40°C.

[0108] The hair conditioner product compositions disclosed in Table 4 are comparative examples and were prepared by Method B described above. [Examples]

[0109] Table 1 below shows various materials and their ALogP and hydrogen donor numbers. As can be seen from Tables 1-4, if a material satisfies both conditions of being non-hydrogen donor and having at least 6 ALogP, the non-aqueous product composition can maintain solid discrete particles at 40°C for at least 4 weeks. For clarity, a fluid that does not contain hydrogen donor groups is a non-hydrogen donor fluid.

[0110] [Table 1]

[0111] Tables 2-4 show the compositions listed in Table 1 (non-aqueous bases and mixed compositions (discrete particles)).

[0112] [Table 2]

[0113] [Table 3]

[0114] [Table 4]

[0115] combination A. Personal care composition, Discrete particles of a mixed composition, wherein the mixed composition contains a surfactant and a high-melting-point aliphatic compound, and the discrete particles are A non-aqueous base, wherein the non-aqueous base contains at least 75%, preferably 80%, more preferably 85%, and most preferably at least 90% of a fluid that is not a hydrogen donor. A personal care composition containing the following: B. The personal care composition according to paragraph A, wherein the fluid has at least 6 AlogP. C. The personal care composition according to paragraph A or B, wherein the non-aqueous base comprises at least 95% by weight of the fluid of the base. D. The personal care composition according to any one of paragraphs A to C, wherein the fluid comprises at least one of silicone, branched hydrocarbon, ester, or alkane. E. The personal care composition according to any one of paragraphs A to D, wherein the fluid comprises at least one of polyalkylsiloxane, cyclopentasiloxane, dimethicone, or aminosilicone. F. The personal care composition according to any one of paragraphs A to D, wherein the fluid comprises at least one of isohexadecane, isododecane, triethylhexanoin, isodecyl oleate, decyl oleate, silicone quaternium-26, dimethicone, or cyclopentasiloxane. G. A personal care composition according to any one of paragraphs A to F, wherein the fluid has a melting point of less than 25°C. H. Personal care compositions according to paragraphs A to G, wherein the composition does not contain, or substantially does not contain, a cleansing surfactant selected from anionic surfactants, bipolar surfactants, amphoteric surfactants, and combinations thereof. I. A personal care composition described in any one of paragraphs A to H, wherein the discrete particles are neither coated nor encapsulated. J. The discrete particles are stable according to a 4-week stability test, as described in any one of paragraphs A to I of the personal care composition. K. The discrete particles are neither an oil-in-water emulsion nor a water-in-oil emulsion, and are personal care compositions as described in any one of paragraphs A to J. L. The personal care composition according to any one of paragraphs A to K, wherein the discrete particles are solid. M. A personal care composition according to any one of paragraphs A to L, wherein the discrete particles contain less than 50% water. N. The personal care composition according to any one of paragraphs A to M, wherein the discrete particles comprise about 10% to about 100% by weight of surfactants and high-melting-point aliphatic compounds. O. The personal care composition according to any one of paragraphs A to N, wherein the surfactant contained in the discrete particles is hydrophobic. P. The personal care composition according to any one of paragraphs A to O, wherein the surfactant contained in the discrete particles is selected from the group consisting of cationic surfactants, nonionic surfactants, and mixtures thereof. Q. The personal care composition described in any one of paragraphs A to P, wherein the surfactant contained in the discrete particles is a cationic surfactant. R. Personal care composition is a personal care composition according to any one of paragraphs A to Q, selected from the group consisting of hair care compositions, body care compositions, facial skin care compositions, and mixtures thereof. S. Personal care composition is a hair care composition, as described in any one of paragraphs A to R. T. A personal care composition according to any one of paragraphs A to S, further comprising a beneficial agent, wherein the discrete particles are... U. The personal care composition according to any one of paragraph T, wherein the beneficial agent comprises at least one of a silicone compound, a fragrance, or an incompatible agent that is incompatible with at least one component contained in the discrete particles. V. A non-aqueous base is a personal care composition according to any one of paragraphs A to U, comprising 100% by weight of the fluid of the base.

[0116] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​listed. Instead, unless otherwise specified, each such dimension is intended to mean both the listed value and the functionally equivalent range encompassing that value. For example, a dimension disclosed as "40 mm" is intended to mean "approximately 40 mm."

[0117] All documents cited herein, including cross-referenced or related patents or applications, are incorporated herein in their entirety by reference unless expressly excluded or otherwise limited. No citation of any document shall be deemed prior art to any invention disclosed or claimed herein, nor shall it be deemed to teach, suggest or disclose any such invention, either alone or in combination with any one or more other references. Furthermore, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in any document incorporated by reference, the meaning or definition given to that term in this document shall prevail.

[0118] While specific embodiments of the present 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. Therefore, it is intended that all such changes and modifications within the scope of the invention be covered in the appended claims.

Claims

1. Personal care composition, Discrete particles of a mixed composition, wherein the mixed composition comprises a surfactant and a high-melting-point aliphatic compound, and the discrete particles are A non-aqueous base, wherein the non-aqueous base contains at least 75%, preferably 80%, more preferably 85%, and most preferably 90% of a fluid that is not a hydrogen donor. A personal care composition containing the following:

2. The personal care composition according to claim 1, wherein the fluid has at least 6 AlogP.

3. The personal care composition according to claim 1 or 2, wherein the fluid comprises at least one of silicone, branched hydrocarbons, esters, or alkanes.

4. The personal care composition according to claim 3, wherein the fluid is a silicone selected from polyalkylsiloxane, cyclopentasiloxane, dimethicone, aminosilicone, and combinations thereof.

5. The personal care composition according to claim 3, wherein the fluid comprises at least one of isohexadecane, isododecane, triethylhexanoin, isodecyl oleate, decyl oleate, silicone quaternium-26, dimethicone, or cyclopentasiloxane.

6. The personal care composition according to any one of claims 1 to 5, wherein the fluid has a melting point of less than 25°C.

7. The personal care composition according to any one of claims 1 to 6, wherein the composition substantially does not contain anionic surfactants, bipolar ionic surfactants, amphoteric surfactants, or cleaning surfactants selected from combinations thereof.

8. The personal care composition according to any one of claims 1 to 7, wherein the discrete particles are neither coated nor encapsulated.

9. The personal care composition according to any one of claims 1 to 8, wherein the discrete particles are stable according to a 4-week stability test.

10. The personal care composition according to any one of claims 1 to 9, wherein the discrete particles are neither an oil-in-water emulsion nor a water-in-oil emulsion.

11. The personal care composition according to any one of claims 1 to 10, wherein the discrete particles are solid.

12. The personal care composition according to any one of claims 1 to 11, wherein the discrete particles contain less than 50%, preferably less than 30%, more preferably less than 20%, and most preferably less than 10% water.

13. The personal care composition according to any one of claims 1 to 12, wherein the surfactant contained in the discrete particles is selected from cationic surfactants, nonionic surfactants, and mixtures thereof, and is preferably a cationic surfactant.

14. The personal care composition according to any one of claims 1 to 13, wherein the discrete particles further comprise a beneficial agent.

15. Use of the personal care composition according to claim 1 for non-therapeutic treatment of hair.

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