Powder granulations, cosmetics and cleansing agents

Abstract

To provide a powdered granulated material which is excellent in granulation properties, in-kettle stability during production and storage stability, and which can be blended with a usability improver at a high concentration in a cosmetic or cleansing agent, and to provide a cosmetic and cleansing agent having improved usability by blending said powdered granulated material therein. [Solution] A powder granule comprising (A) a powder component, (B) a usability improver, and (C) a binder, wherein the powder component (A) is at least one of (A-1) an amino acid derivative and (A-2) a wax having a melting point of 100° C. or higher. It is preferable that the powder component (A) is (A-2) a wax having a melting point of 100° C. or higher, and further comprises (D) an inorganic powder.

Description

[Technical field]

[0001] The present invention relates to a powder granulated product, and to a cosmetic preparation and a cleansing preparation containing said powder granulated product. [Background technology]

[0002] By incorporating the powder granules into cosmetics or cleansing agents, it is possible to impart a distinctive appearance and a scrubbing effect, and it is also possible to incorporate various foam quality improvers or drugs, which are difficult to incorporate directly into cosmetics or cleansing agents, via the powder granules. However, when powdered granules are blended into cosmetics or cleansing agents, the specific gravities of the cosmetics or cleansing agents differ from those of the powdered granules, so that the powdered granules tend to float or sink in the cosmetics or cleansing agents during preparation, making it difficult to blend the powdered granules stably.

[0003] Therefore, the applicant of the present application has conducted extensive research and has previously proposed a powder granulation product containing (A) 25-75% by mass of silicone powder having a specific gravity of 0.8-1.0, (B) 20-70% by mass of cellulose powder, and (C) 1-5% by mass of ethyl cellulose (see Patent Document 1). The proposed powder granulation product has the excellent characteristics of being less irritating to the skin and being easy to adjust so that the specific gravity of the powder granulation product is equivalent to that of liquid components of cleansing agents, or liquid, emulsion, gel, or cream preparations, or soap liquid before cooling and solidifying of soap produced by a framing method. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6074492 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the silicone powder contained in the powder granule described in Patent Document 1 is not biodegradable and remains in the environment, which may limit its use. Furthermore, Patent Document 1 does not mention the inclusion of a usability improver such as highly polymerized polyethylene glycol to improve the usability of hair treatment liquids and the like.

[0006] By blending a usability improver such as highly polymerized polyethylene glycol into a hair treatment liquid, it is possible to improve usability such as smoothness of hair when runny fingers through the hair and manageability of hair. However, blending a high concentration of a usability improver such as highly polymerized polyethylene glycol into a hair treatment liquid causes thickening and stringiness, and therefore the usability improver cannot be blended in high concentration, resulting in a problem that a sufficient usability improvement effect cannot be obtained.

[0007] The present invention aims to solve the above-mentioned problems in the prior art and to achieve the following objects: That is, the present invention aims to provide a powder granulated product which is excellent in granulation properties, in-kettle stability during production, and storage stability, and which allows a usability improver to be blended in a high concentration in a cosmetic or cleansing agent, and a cosmetic and cleansing agent whose usability has been improved by blending said powder granulated product. [Means for solving the problem]

[0008] In order to solve the above problems, the inventors of the present invention have conducted extensive research and have found that a powder granulation product containing (A) a powder component, (B) a usability enhancer, (C) a binder, and preferably (D) an inorganic powder has excellent granulation properties, in-kettle stability during production, and storage stability, and that the usability enhancer can be blended in high concentrations with a cosmetic or cleansing agent, thereby achieving a significant improvement in usability, thereby completing the present invention.

[0009] The present invention provides a method for solving the above problems. 1. The powder granulation product is composed of (A) a powder component and (B) At least one selected from highly polymerized polyethylene glycol, cationic guar gum, and cationic cellulose (A) a powder component; and (C) a binder. teeth( A-1) It is lauroyl lysineIt is an amino acid derivative. It contains 70 to 90 mass % of (A-1) an amino acid derivative, 5 to 25 mass % of (B) a usability improver, and 1 to 10 mass % of (C) a binder. The second powder granule of the present invention comprises (A) a powder component, (B) a usability improver which is at least one selected from highly polymerized polyethylene glycol, cationized guar gum, and cationized cellulose, and (C) a binder, wherein the (A) powder component is (A-1) an amino acid derivative which is lauroyl lysine and (A-2) a hydrocarbon wax having a melting point of 100°C or higher, and comprises 60 to 80 mass% of (A-1) the amino acid derivative, 1 to 10 mass% of (A-2) the hydrocarbon wax having a melting point of 100°C or higher, 5 to 25 mass% of (B) the usability improver, and 1 to 10 mass% of (C) the binder. The third powder granule of the present invention comprises (A) a powder component, (B) a usability improver which is at least one selected from highly polymerized polyethylene glycol, cationized guar gum, and cationized cellulose, (C) a binder, and (D) an inorganic powder, and the (A) powder component is (A-2) a hydrocarbon wax having a melting point of 100°C or higher and comprises 65 to 85 mass% of (A-2) the hydrocarbon wax having a melting point of 100°C or higher, 5 to 25 mass% of (B) the usability improver, 1 to 10 mass% of (C) the binder, and 5 to 20 mass% of (D) the inorganic powder.

[0010] The present invention Any of the first to third In the case of powder granulation, (B) usability improver teeth Preferably, the polyethylene glycol used is a highly polymerized polyethylene glycol having an average degree of polymerization of 5,000 or more. The present invention Any of the first to third In the powder granulation product, the binder (C) is preferably ethyl cellulose. The present invention Third In the powder granulation product, the inorganic powder (D) is preferably talc. In the third powder granulated product of the present invention, the inorganic powder (D) preferably has an average particle size of 1 to 30 μm. In any one of the first to third powder granulated products of the present invention, the average particle size is preferably 100 to 1,000 μm.

[0011] The cosmetic preparation of the present invention contains the powder granulated product of the present invention. In the cosmetic of the present invention, the blending amount of the powder granulated material is preferably 0.1 to 10% by mass based on the total amount of the cosmetic.

[0012] The cleansing agent of the present invention contains the powder granulated product of the present invention. In the cleansing agent of the present invention, the blending amount of the powder granules is preferably 0.1 to 10% by mass based on the total amount of the cleansing agent. Effect of the Invention

[0013] According to the present invention, it is possible to solve the above-mentioned problems of the conventional technology and achieve the above-mentioned object, thereby providing a powdered granulated product which is excellent in granulation properties, in-kettle stability during production, and storage stability, and which allows a usability enhancer to be blended into a cosmetic or cleansing agent at a high concentration, as well as a cosmetic and cleansing agent whose usability has been improved by blending said powdered granulated product. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] (Powder granules) The powder granulated product of the present invention contains (A) a powder component, (B) a usability improver, and (C) a binder, and preferably contains (D) an inorganic powder, and further contains other components as necessary.

[0015] In the present invention, the use of a powder granulated product containing a usability improver provides the following particularly remarkable effects. (1) When a cosmetic or cleansing agent containing the powder granules is stored, the usability improver can be stably maintained in the powder granules for a long period of time. On the other hand, when the cosmetic or cleansing agent is used (when washing hair), the powder granules disintegrate, allowing the usability improver to act and provide usability improving effects such as ease of running fingers through hair, combing, and manageability of hair. (2) The powder granules containing the usability improver are stable and do not disintegrate during the production of cosmetics or cleansing agents, so thickening or stringiness does not occur in the production vessel, improving productivity. (3) By blending a powdered granule containing a high concentration of a usability enhancer into a cosmetic or cleansing agent, thickening or stringiness does not occur as occurs when a high concentration of a usability enhancer is blended directly into the cosmetic or cleansing agent. This allows the cosmetic or cleansing agent to be blended with a high concentration of the usability enhancer, thereby improving usability.

[0016] <(A) Powder components> As the powder component (A), at least one of (A-1) an amino acid derivative and (A-2) a wax having a melting point of 100° C. or higher is used.

[0017] When an amino acid derivative (A-1) is used as the powder component (A), the amino acid derivative (A-1) may be used alone, or the amino acid derivative (A-1) may be used in combination with a wax (A-2) having a melting point of 100°C or higher. When (A-2) a wax having a melting point of 100°C or higher is used as the (A) powder component, (A-2) a wax having a melting point of 100°C or higher may be used alone, or (A-1) an amino acid derivative and (A-2) a wax having a melting point of 100°C or higher may be used in combination. When (A-2) a wax having a melting point of 100° C. or higher is used alone as the powder component (A), it is preferred that it further contains (D) an inorganic powder.

[0018] -(A-1) Amino acid derivative- The (A-1) amino acid derivative is a compound obtained by dehydration condensation of a higher fatty acid and an amino acid, and examples thereof include lauroyl lysine, caproyl lysine, etc. Among these, lauroyl lysine is particularly preferred from the viewpoint of granulation properties. Lauroyl lysine is an amide of lauric acid and lysine, represented by the following structural formula:

[0019] [ka]

[0020] Lauroyl lysine is a layered powder having a structure in which thin hexagonal plate-like crystals are layered, and the average particle size of lauroyl lysine is preferably 30 μm or less, and more preferably 20 to 30 μm. Commercially available lauroyl lysine products include, for example, Amihope (registered trademark) LL (manufactured by Ajinomoto Co., Inc.).

[0021] -(A-2) Wax with a melting point of 100°C or higher that is a powder component- The wax (A-2) having a melting point of 100° C. or higher is not particularly limited as long as it has a melting point of 100° C. or higher, but is preferably a synthetic wax. Examples of synthetic waxes include hydrocarbon waxes (eg, paraffin wax, microcrystalline wax, etc.). The average particle size of the synthetic wax is preferably from 1 to 30 μm, and more preferably from 10 to 30 μm.

[0022] <(B) Usability improver> When the (B) usability improver is incorporated into a hair care product such as a hair treatment, it can improve usability such as ease of running fingers through hair, ease of combing, and manageability of hair. Also, when incorporated into a soap composition, it can improve usability such as foam quality (foam durability, foam elasticity, etc.). (B) Examples of the usability improver include polyethylene glycol, cationic guar gum, cationic cellulose, etc. These may be used alone or in combination of two or more. Among these, highly polymerized polyethylene glycol is particularly preferred because of its high usability improvement effect.

[0023] Cationic guar gum is a cationic polymer obtained by adding cationic groups to guar gum. Examples of cationic guar gum include guar hydroxypropyltrimonium chloride and hydroxypropyl guar hydroxypropyltrimonium chloride.

[0024] Examples of cationic cellulose include polyquaternium-4 (hydroxyethylcellulose dimethyldiallylammonium chloride), polyquaternium-10 (O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride), and hydroxyethylcellulose dimethyldiallylammonium chloride copolymer.

[0025] The average degree of polymerization of the polyethylene oxide constituting the highly polymerized polyethylene glycol is preferably at least 5,000, more preferably at least 10,000, and even more preferably at least 30,000. The average degree of polymerization of the polyethylene oxide is preferably at most 200,000, and more preferably at most 100,000. The weight average molecular weight of the highly polymerized polyethylene glycol is, for example, preferably 80,000 or more and 7,000,000 or less, and more preferably 100,000 or more and 5,000,000 or less.

[0026] Examples of highly polymerized polyethylene glycols include PEG-45M (average degree of polymerization 45,000, weight average molecular weight about 2,000,000), PEG-65M (average degree of polymerization 65,000, weight average molecular weight about 2,900,000), PEG-90M (average degree of polymerization 90,000, weight average molecular weight about 4,000,000), PEG-115M (average degree of polymerization 115,000, weight average molecular weight about 5,000,000), and PEG-160M ​​(average degree of polymerization 160,000, weight average molecular weight about 7,000,000). These may be used alone or in combination of two or more.

[0027] The content of the (B) usability improver is preferably 5 to 25% by mass, more preferably 5 to 20% by mass, and even more preferably 10 to 20% by mass, based on the total amount of the powder granules. If the content of the usability improver is less than 5% by mass, the usability improvement effect may not be obtained even if the powder granules are blended into a cosmetic or cleansing agent. On the other hand, if the content of the usability improver exceeds 25% by mass, the usability improvement effect may not be obtained, and the stability in the kettle during production and the appearance during blending may be deteriorated.

[0028] <(C) Binder> (C) Examples of the binder include ethyl cellulose, vinyl acetate resin, gum arabic, xanthan gum, carrageenan, etc. These may be used alone or in combination of two or more. Among these, ethyl cellulose is particularly preferred because of its good color and odor and excellent granulation properties.

[0029] The content of the binder is preferably 1 to 10% by mass, more preferably 1 to 5% by mass, based on the total amount of the powder granulated product. If the content of the binder is less than 1% by mass, the binding effect is weak, and the storage stability of the powder granulated product may be impaired (it may become easily disintegrated). On the other hand, if the content of the binder is more than 10% by mass, the binding effect may be too strong, and the granulation property may be reduced.

[0030] <(D) Inorganic powder> (D) Examples of inorganic powders include talc, sericite, mica, titanium mica, titanium oxide, kaolin, and silicates. These may be used alone or in combination of two or more. Among these, talc is preferred because it provides a good feel when the powder granule is held in the hand.

[0031] The average particle size of the inorganic powder is preferably from 1 to 30 μm, and more preferably from 1 to 10 μm. The content of the inorganic powder is preferably 5 to 20% by mass, more preferably 10 to 20% by mass, based on the total amount of the powder granules. If the content of the inorganic powder is less than 5% by mass, the specific gravity of the powder granules is small, and the powder granules may float when blended in a cosmetic or cleansing agent. On the other hand, if the content of the inorganic powder is more than 20% by mass, the powder granules may dissolve or aggregate in the cosmetic or cleansing agent, or may rise or sink significantly when blended in the cosmetic or cleansing agent.

[0032] When (A-1) an amino acid derivative is used alone as (A) the powder component, it is preferable that the powder component contains 70 to 90 mass % of (A-1) an amino acid derivative, 5 to 25 mass % of (B) a usability improver, and 1 to 10 mass % of (C) a binder. If the content of the (A-1) amino acid derivative is less than 70% by mass, the powder granules may dissolve or aggregate, or float or settle slightly in the cosmetic or cleansing agent when blended with the cosmetic or cleansing agent. On the other hand, if the content of the (A-1) amino acid derivative is more than 90% by mass and the content of the (B) usability improver is less than 5% by mass, the usability improvement effect may not be obtained even if the powder granules are blended with the cosmetic or cleansing agent. Also, if the content of the (A-1) amino acid derivative is more than 90% by mass and the content of the (C) binder is less than 1% by mass, the binding effect is weakened, and the stability of the powder granules may be impaired (they may become easily disintegrated).

[0033] When (A-1) an amino acid derivative and (A-2) a wax having a melting point of 100°C or higher are used in combination as the (A) powder component, the powder preferably contains 60 to 80 mass% of (A-1) an amino acid derivative, 1 to 10 mass% of (A-2) a wax having a melting point of 100°C or higher, 5 to 25 mass% of (B) a usability improver, and 1 to 10 mass% of (C) a binder. If the content of the (A-1) amino acid derivative is less than 60% by mass, the powder granules may dissolve or aggregate, or float or settle slightly in the cosmetic or cleansing agent when blended with the cosmetic or cleansing agent. On the other hand, if the content of the (A-1) amino acid derivative is more than 80% by mass and the content of the (B) usability improver is less than 5% by mass, the usability improvement effect may not be obtained even if the powder granules are blended with the cosmetic or cleansing agent. Also, if the content of the (A-1) amino acid derivative is more than 80% by mass and the content of the (C) binder is less than 1% by mass, the binding effect is weakened, and the stability of the powder granules may be impaired (they may become easily disintegrated). Furthermore, if the content of (A-2) wax having a melting point of 100°C or higher exceeds 10% by mass, when the powder granules are blended with a cosmetic or cleansing agent, the powder granules may dissolve or aggregate, or float or sink slightly in the cosmetic or cleansing agent.

[0034] When (A-2) a wax having a melting point of 100°C or higher is used alone as (A) the powder component, it is preferable that (D) an inorganic powder is further contained, and the composition contains 65 to 85 mass % of (A-2) a wax having a melting point of 100°C or higher, 5 to 25 mass % of (B) a usability improver, 1 to 10 mass % of (C) a binder, and 5 to 20 mass % of (D) the inorganic powder. If the content of (A-2) wax having a melting point of 100°C or higher is less than 65% by mass, the powder granules may dissolve or aggregate, or rise or sink significantly, in the cosmetic or cleansing agent when blended with the cosmetic or cleansing agent. On the other hand, if the content of (A-2) wax having a melting point of 100°C or higher exceeds 85% by mass and the content of (B) usability improver is less than 5% by mass, the usability improvement effect may not be obtained even if the powder granules are blended with the cosmetic or cleansing agent. Also, if the content of (A-2) wax having a melting point of 100°C or higher exceeds 85% by mass and the content of (C) binder is less than 1% by mass, the binding effect is weakened, and the stability of the powder granules may be impaired (they may become easily disintegrated). Furthermore, if the content of (A-2) wax having a melting point of 100°C or higher exceeds 85% by mass and the content of (D) inorganic powder is less than 5% by mass, the specific gravity of the powder granules will be small, and the powder granules may float when blended into a cosmetic or cleanser.

[0035] <Other ingredients> The powder granulated product of the present invention may contain other ingredients as required, provided that the purpose and effects of the present invention are not impaired. Examples of other components include colorants, synthetic chemicals, oils, antioxidants, light stabilizers, ultraviolet absorbers, heat stabilizers, tackifiers, and processing aids.

[0036] The particle size of the powder granulated product of the present invention is not particularly limited, but the average particle size is preferably 100 to 1,000 μm, and more preferably 200 to 500 μm. A soap composition containing the powder granulated product of the present invention is usually prepared at a temperature of 70 to 90° C. For this reason, the melting point of the powder granulated product is preferably 90° C. or higher.

[0037] <Method of manufacturing powder granules> The granulation method for the powder granulated product of the present invention is not particularly limited, and examples thereof include stirring and mixing granulation, rolling granulation, extrusion granulation, crushing granulation, fluidized bed granulation, spray drying granulation, melt granulation, compression granulation, vacuum freezing granulation, suspension agglomeration granulation, coating granulation, etc. Among these, extrusion granulation is preferred.

[0038] The powder granulated product of the present invention is prepared by putting the above components (A) to (C) or the above components (A) to (D) into a stirring device, adding the solvent in three separate portions and stirring each time to obtain a mixture. The mixture obtained is extruded through a sieve with a specified mesh size to granulate the mixture, and a granulated product is obtained. The solvent is evaporated from the granulated product obtained, and the mixture is dried. Thereafter, the mixture is extruded through a sieve with a specified mesh size to granulate the mixture, thereby producing a powder granulated product. If necessary, the particle size of the powder granulated product may be adjusted by further classification or pulverization. Examples of the solvent include ethanol, methanol, acetone, hexane, etc. Among these, ethanol is preferred from the viewpoint of safety.

[0039] (Cosmetics) The cosmetic of the present invention contains the powder granulated product of the present invention in an amount of preferably 0.1 to 10% by mass, more preferably 0.5 to 5% by mass, even more preferably 0.5 to 3% by mass, and particularly preferably 1 to 3% by mass, based on the total amount of the cosmetic.

[0040] The base of the cosmetic preparation into which the powder granulated material is to be blended can be appropriately selected from ingredients commonly used in cosmetics, and examples thereof include water, alcohol, oil-based raw materials, surfactants, moisturizers, whitening agents, thickeners, pH adjusters, UV absorbers, antioxidants, preservatives, sequestering agents (chelating agents), colorants, fragrances, excipients, blood circulation promoters, skin medications, scalp medications, other medicinal agents, vitamins, hormones, amino acids, and antihistamines. The cosmetic preparation may be in the form of a cream, paste, gel, liquid, or powder. Specific examples of cosmetic products include lotions, milky lotions, beauty serums, creams, gels, cleansing foams, cleansing powders, cleansing creams, massage creams, massage gels, hair treatments, hair packs, conditioners, lotions, and sheet packs.

[0041] (cleaning agent) The cleansing agent of the present invention contains the powdered granule of the present invention in an amount of preferably 0.1 to 10% by mass, more preferably 0.5 to 5% by mass, even more preferably 0.5 to 3% by mass, and particularly preferably 1 to 3% by mass, based on the total amount of the cleansing agent.

[0042] The base of the cleansing agent into which the powdered granules are to be blended can be appropriately selected from ingredients commonly used in cleansing agents, and examples thereof include higher fatty acid salts, acyl glutamates, cetyl sulfates, polyoxyalkylene alkylamines, cationic polymers, thickeners, chelating agents, pH adjusters, fragrances, colorants, moisturizers, preservatives, anti-inflammatory agents, plant extracts, bactericides, antioxidants, ultraviolet absorbers, chelating agents, higher fatty acids, and metal sequestering agents. The cleansing agent may be in the form of, for example, a solid, liquid, emulsion, cream, paste, gel, or the like. Specific examples of cleansing products include framed soap, transparent soap, solid shampoo, rinse-in shampoo, body soap, and hand soap. EXAMPLES

[0043] Examples of the present invention will be described below, but the present invention is not limited to these examples. The evaluation methods used in the present invention are as follows.

[0044] <Granulation property> The texture of the obtained powder granulated product when squeezed with the hand and the possibility of granulation were evaluated based on the following criteria. [Evaluation Criteria] 〇: Has a moderate amount of moisture, can maintain its shape for a while when lightly squeezed with the hand, is not sticky, and is granulated uniformly △: Slightly sticky when lightly squeezed with hand, but granulation is possible ×: Granulation was not possible

[0045] <Stability in the pot during manufacturing> The soap composition shown in Table 1 below or the hair treatment liquid shown in Table 2 below was added to a production kettle (70°C) and stirred for 15 minutes, after which the stability inside the kettle during production was evaluated based on the following criteria. [Evaluation Criteria] 〇: After stirring for 15 minutes, the powder granules did not dissolve or disintegrate. △: After stirring for 15 minutes, the powder granules were partially dissolved or disintegrated. ×: After stirring for 15 minutes, the powder granules were completely dissolved or disintegrated.

[0046] -Soap composition-

[0047] [Table 1]

[0048] -Hair treatment liquid-

[0049] [Table 2]

[0050] <Appearance when mixed> The soap compositions shown in Table 1 above, which contained the powder granulated material, or the hair treatment liquids shown in Table 2 above, were evaluated for appearance based on the following criteria. [Evaluation Criteria] ◯: The powder granules are uniformly dispersed throughout the soap composition or hair treatment liquid, and there is no floating or settling. △: The powder granules are dissolved or aggregated in the soap composition or hair treatment liquid, and slightly float or settle. ×: The powder granules are dissolved or aggregated in the soap composition or hair treatment liquid, and significantly float or settle.

[0051] <Evaluation of hair smoothness and manageability> The hair treatment liquid shown in Table 2 above containing the powder granules was applied to a strand of hair, and after rinsing, the ease of running fingers through the hair and the manageability of the hair were evaluated based on the following criteria in comparison with the hair treatment liquid in Table 2 not containing the powder granules.

[0052] [Evaluation criteria for hair smoothness] ○: The hair is easier to comb and run your fingers through than a hair treatment liquid that does not contain the powdered granules. △: Same as a hair treatment liquid that does not contain powdered granules ×: Hair is difficult to comb and run through compared to a hair treatment liquid not containing the powdered granules.

[0053] [Evaluation criteria for hair manageability] 〇: Compared to hair treatment liquids that do not contain powdered granules, hair is more manageable after drying. △: Same as a hair treatment liquid that does not contain powdered granules ×: Compared to hair treatment liquids that do not contain powder granules, hair becomes unmanageable and spreads after drying.

[0054] <Evaluation of foam quality> The soap compositions were evaluated by a panel of five experts for their foam quality (foam durability and foam elasticity) during use according to the following criteria. [Evaluation Criteria] 〇: Good foam quality △: Normal foam quality ×: Poor foam quality

[0055] (Test Examples 1-1 to 1-7) (B) Six types of usability improvers shown in Table 3 were used, and components (A) to (C) or components (A) and (C) shown in Table 4 were placed in a stirring device, and the solvent (ethanol) was added in three separate portions, with stirring each time, to obtain a mixture. The resulting mixture was granulated by being forced through a 20 mesh (20M) sieve to obtain granules. The solvent was evaporated from the obtained granules, and the granules were dried. Thereafter, the mixture was extruded and granulated through a 60 mesh (60M) sieve to obtain a powder granulated product. A 20 mesh (20M) sieve is a sieve with openings of 0.701 mm (701 μm). A 60 mesh (60M) sieve is a sieve with openings of 0.246 mm (246 μm).

[0056] [Table 3]

[0057] Next, the granulation properties of the obtained powder granulated product were evaluated. The results are shown in Table 4. The hair treatment liquid containing the obtained powder granules was evaluated for stability in the kettle during production, appearance during blending, ease of running hair through the fingers, and hair manageability. The results are shown in Table 4.

[0058] [Table 4]

[0059] From the results in Table 4, Test Example 1-2, which used guar hydroxypropyltrimonium chloride as a usability improver, and Test Example 1-3, which used polyquaternium-10 as a usability improver, both showed good hair combing. Test Example 1-6, which used highly polymerized polyethylene glycol (PEG-90M) as a usability improver, showed good hair combing and manageability. From these results, it was found that guar hydroxypropyltrimonium chloride, polyquaternium-10, and highly polymerized polyethylene glycol (PEG-90M) are suitable usability improvers, with highly polymerized polyethylene glycol (PEG-90M) being particularly suitable.

[0060] (Test Examples 1-1, 1-6, and 2-1 to 2-6) Next, powder granules were prepared in the same manner as in Test Examples 1-1 to 1-7 using highly polymerized polyethylene glycol (PEG-90M) as a usability improver and the composition shown in Table 5, and the granulation properties were evaluated. The results are shown in Table 5. The soap compositions shown in Table 1 containing the obtained powder granules were evaluated for stability in the kettle during production, appearance during blending, and foam quality. The results are shown in Table 5. The hair treatment liquids shown in Table 2 containing the obtained powder granules were evaluated for stability in the kettle during production, appearance during blending, ease of running hair through the fingers, and manageability of hair. The results are shown in Table 5.

[0061] [Table 5]

[0062] The results in Table 5 show that a powder granulation material containing (A) 70 to 90 mass % of an amino acid derivative as a powder component, (B) 5 to 25 mass % of a usability improver, and (C) 1 to 10 mass % of a binder has good granulation properties, and the evaluation results of a soap composition and a hair treatment liquid containing the powder granulation material were all good. Therefore, it was found that the content of highly polymerized polyethylene glycol (PEG-90M) as a usability improver is preferably 5 to 25 mass % based on the total amount of the powder granulated product.

[0063] (Test Examples 3-1 to 3-7) (B) As a usability improver, six types shown in Table 3 above were used, and powder granules were prepared using the components (A) to (D) or the components (A), (C) and (D) shown in Table 6 in the same manner as in Test Examples 1-1 to 1-7, and the granulation properties were evaluated. The hair treatment liquid containing the obtained powder granules was evaluated for stability in the kettle during production, appearance during blending, ease of running hair through the fingers, and hair manageability. The results are shown in Table 6.

[0064] [Table 6]

[0065] From the results in Table 6, Test Example 3-2, which used guar hydroxypropyltrimonium chloride as a usability improver, and Test Example 3-3, which used polyquaternium-10 as a usability improver, both showed good hair combing. Test Example 3-6, which used highly polymerized polyethylene glycol (PEG-90M) as a usability improver, showed good hair combing and manageability. Therefore, it was found that guar hydroxypropyltrimonium chloride, polyquaternium-10, and highly polymerized polyethylene glycol (PEG-90M) are suitable usability improvers, with highly polymerized polyethylene glycol (PEG-90M) being particularly suitable.

[0066] (Test Examples 3-1, 3-6, and 4-1 to 4-6) Highly polymerized polyethylene glycol was used as a usability improver, and powder granules were prepared in the same manner as in Test Examples 1-1 to 1-7 according to the composition shown in Table 7, and the granulation properties were evaluated. The results are shown in Table 7. The soap compositions containing the obtained powder granules were evaluated for stability in the kettle during production, appearance during blending, and foam quality. The results are shown in Table 7. The hair treatment liquid containing the obtained powder granules was evaluated for stability in the kettle during production, appearance during blending, ease of running hair through the fingers, and hair manageability. The results are shown in Table 7.

[0067] [Table 7]

[0068] The results in Table 7 show that the powder granulation material containing (A) 65 to 85 mass% of the powder component hydrocarbon wax, (B) 5 to 25 mass% of the usability improver, (C) 5 mass% of the binder, and (D) 5 mass% of talc has good granulation properties, and the evaluation results of the soap composition and hair treatment liquid containing the powder granulation material were all good. Therefore, it was found that the content of highly polymerized polyethylene glycol (PEG-90M) as a usability improver is preferably 5 to 25 mass % based on the total amount of the powder granulated product.

[0069] (Test Examples 1-1, and 5-1 to 5-7) Highly polymerized polyethylene glycol was used as a usability improver, and powder granules were prepared in the same manner as in Test Examples 1-1 to 1-7 according to the composition shown in Table 8, and the granulation properties were evaluated. The results are shown in Table 8. The soap compositions containing the obtained powder granules were evaluated for stability in the kettle during production, appearance during blending, and foam quality. The results are shown in Table 8. The hair treatment liquid containing the obtained powder granules was evaluated for stability in the kettle during production, appearance during blending, ease of running hair through the fingers, and manageability of hair. The results are shown in Table 8.

[0070] [Table 8]

[0071] The results in Table 8 show that a powder granulation material containing 60 to 80 mass % of (A-1) amino acid derivative, 10 mass % of (A-2) hydrocarbon wax, 5 to 25 mass % of (B) usability improver, and 5 mass % of (C) ethyl cellulose has good granulation properties, and the evaluation results of soap compositions and hair treatment liquids containing the powder granulation material were all good. Therefore, it was found that the content of (B) highly polymerized polyethylene glycol (PEG-90M) as a usability improver is preferably 5 to 25 mass % based on the total amount of the powder granulated product.

[0072] (Prescription Examples 1-5) The hair treatment liquids of Formulation Examples 1 to 4, which contain the powder granulated products of Test Examples 2 to 4, are shown in Table 9 below. Formulation Example 5 is a hair treatment liquid containing highly polymerized polyethylene glycol (PEG-90M) instead of the powder granulated product. The viscosity of the obtained hair treatment liquid at the time of disintegration of the powder granules and the viscosity before and after storage were measured to evaluate the storage stability as described below. In addition, the hair treatment liquid after storage was evaluated for the ease of running fingers through the hair and the manageability of the hair in the same manner as described above. The results are shown in Table 9.

[0073] <Storage stability> 95 ml of the obtained hair treatment liquid was placed in a 100 ml sealed container with a lid and stored in a thermostatic bath at 50°C for 30 days. The viscosity at 25°C before and after storage was measured using a viscometer, and the rate of change in viscosity was calculated using the following formula 1, and the storage stability was evaluated according to the following criteria. [Formula 1] Viscosity change rate (%) = [(viscosity after storage - viscosity before storage) / (viscosity before storage)] x 100% [Evaluation Criteria] ○: Viscosity change rate is less than ±10% ×: Viscosity change rate is ±10% or more

[0074] <Viscosity of powder granules when they disintegrate> The hair treatment liquids of Formulation Examples 1 to 4 containing the powder granules were vigorously stirred at 75°C for 30 minutes or more, and after confirming that the granules had disintegrated (dissolved), the viscosity of the powder granules at the time of disintegration was measured.

[0075] -Hair treatment liquid-

[0076] [Table 9]

[0077] From the results in Table 9, it was found that in Formulation Examples 1 to 4, the viscosity of the powder granules at the time of disintegration rises sharply due to disintegration (dissolution) (a viscosity increase of approximately 4,000 to 10,000 mPa s, depending on the blend amount). In contrast, the viscosity change rate during storage stability at 50°C for 30 days was less than ±10% (a maximum viscosity increase of 1,140 to 1,200 mPa s), indicating that the powder granules of Formulation Examples 1 to 4 do not disintegrate (dissolve) in the hair treatment liquid and are stably maintained for long periods of time. From this, it was found that the powdered granules containing a high concentration of highly polymerizable polyethylene glycol can be stably maintained in the hair treatment liquid for a long period of time until the hair treatment liquid is used (when washing hair), and when the hair treatment liquid after storage is used (when washing hair), the powdered granules containing highly polymerizable polyethylene glycol disintegrate, and the released highly polymerizable polyethylene glycol acts to improve usability (ease of running fingers through hair and manageability of hair). It was also found that the blending amount of the powder granules is preferably 1.0 mass % or more.

[0078] (Formulation Examples 6-10) Table 10 below shows examples of soap compositions prepared by conventional methods. The resulting soap compositions were evaluated for foam quality, and the results are shown in Table 10.

[0079] -Soap composition-

[0080] [Table 10] The results in Table 10 show that by blending powder granules containing highly polymerizable polyethylene glycol in a soap composition, an effect of improving usability (improved foam quality) can be obtained. It was also found that the blending amount of the powder granules is preferably 1.0 mass % or more. [Industrial Applicability]

[0081] The powder granulated product of the present invention has excellent granulation properties, in-kettle stability during production, and storage stability, and can be blended with a usability improver at a high concentration in a cosmetic or cleansing agent, and is therefore suitably used in, for example, cosmetics such as lotions, milky lotions, beauty essences, creams, gels, cleansing foams, cleansing powders, cleansing creams, massage creams, massaging gels, hair treatments, hair packs, conditioners, lotions, and sheet packs; and cleansing agents such as framed soaps, transparent soaps, solid shampoos, rinse-in shampoos, body soaps, and hand soaps.

Claims

1. (A) a powder component; (B) a usability improver which is at least one selected from highly polymerized polyethylene glycol, cationized guar gum, and cationized cellulose; (C) a binder; and Including, The powder component (A) is (A-1) an amino acid derivative which is lauroyl lysine, A powder granulated product comprising 70 to 90% by mass of the (A-1) amino acid derivative, 5 to 25% by mass of the (B) usability improver, and 1 to 10% by mass of the (C) binder.

2. (A) a powder component, (B) a usability improver which is at least one selected from highly polymerized polyethylene glycol, cationized guar gum, and cationized cellulose; (C) a binder; and Including, The powder component (A) is (A-1) an amino acid derivative which is lauroyl lysine and (A-2) a hydrocarbon wax having a melting point of 100° C. or higher, A powder granulated product comprising: (A-1) 60 to 80 mass % of an amino acid derivative; (A-2) 1 to 10 mass % of a hydrocarbon wax having a melting point of 100° C. or higher; (B) 5 to 25 mass % of a usability improver; and (C) 1 to 10 mass % of a binder.

3. (A) a powder component, (B) a usability improver which is at least one selected from highly polymerized polyethylene glycol, cationized guar gum, and cationized cellulose; (C) a binder; and (D) an inorganic powder; Including, The powder component (A) is (A-2) a hydrocarbon wax having a melting point of 100° C. or higher, A powder granulated product comprising: (A-2) 65 to 85 mass% of a hydrocarbon wax having a melting point of 100° C. or higher; (B) 5 to 25 mass% of a usability improver; (C) 1 to 10 mass% of a binder; and (D) 5 to 20 mass% of an inorganic powder.

4. The powder granulated product according to any one of claims 1 to 3, wherein the (B) usability improver is a highly polymerized polyethylene glycol having an average degree of polymerization of 5,000 or more.

5. The powder granulated product according to any one of claims 1 to 3, wherein the binder (C) is ethyl cellulose.

6. The powder granulated product according to claim 3 , wherein the inorganic powder (D) is talc.

7. The powder granulated product described in claim 3, wherein the average particle size of the inorganic powder (D) is 1 to 30 μm.

8. A powder granulated product described in any one of claims 1 to 3, having an average particle size of 100 to 1,000 μm.

9. A cosmetic preparation comprising the powder granulated product according to any one of claims 1 to 3.

10. The cosmetic according to claim 9, wherein the blending amount of the powder granulated material is 0.1 to 10% by mass with respect to the total amount of the cosmetic.

11. A cleansing agent comprising the powder granulated material according to any one of claims 1 to 3.

12. The cleansing agent according to claim 11, wherein the blending amount of the powder granules is 0.1 to 10% by mass based on the total amount of the cleansing agent.

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