Silky gloss composition

Abstract

To provide a silky gloss composition that exhibits a silky gloss characterized by smooth and graceful luster.SOLUTION: A silky gloss composition contains (A) a fatty acid glycol ester, (B) a fatty acid monoalkanolamide having an amide linkage -CONH-, and (C) an amido betaine-type amphoteric surfactant, wherein the content of component (A) is 5-38 mass%, and the mass ratio of the total amount of component (A) and component (B) to component (C) is 5.0-13.0.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a silky gloss composition. [Background technology]

[0002] Pearlizing agents have traditionally been used in cosmetics and cleansers to impart a pearly luster. Pearly luster can be a sharp metallic luster or a luster with a scattered sparkle, but a smooth, elegant silky luster is also known.

[0003] Traditionally, cosmetics and cleansers have long been required to have a stronger pearly luster, but in recent years, there has been an increasing demand for pearlizing agents with a silky feel, especially those with a smooth, elegant luster that is silky tones.

[0004] Pearlizing agents are required to have low viscosity for ease of handling and dispersibility. On the other hand, if the viscosity is too low, there is the problem of poor stability over time. However, it has been difficult to develop a pearlizing agent with the right viscosity that also has a silky pearly luster.

[0005] As a technique for imparting pearly luster, Patent Document 1 proposes a pearly luster composition containing a fatty acid glycol ester, a fatty acid monoalkylolamide, an amphoteric surfactant, and water, and having fatty acid glycol ester crystals with an average particle size and thickness within specific ranges and a plate-like particle shape.

[0006] Patent Document 2 proposes a pearlescent concentrate containing a pearlescent component, a nonionic, amphoteric and / or zwitterionic emulsifier, and a low molecular weight polyhydric alcohol, wherein the pearlescent component is a fatty acid glycol ester, a fatty acid monoalkanolamide, or a β-ketosulfone.

[0007] Patent Document 3 proposes a concentrated pearlizing agent composition having a pearly luster, which contains a pearlizing agent, one or more surfactants selected from a nonionic surfactant, an amphoteric surfactant, and an anionic surfactant, and an N-alkyl fatty acid monoalkanolamide as an amido alcohol.

[0008] Patent Document 4 proposes producing a pearlescent agent dispersion having two peaks in the crystal particle size distribution and containing pearlescent agent particles of two different particle sizes by mixing a fatty acid glycol ester and a surfactant-containing component at a temperature equal to or higher than the melting point of the fatty acid glycol ester, blending the resulting mixture with a specific amount of cooling medium, and cooling the mixture to a temperature equal to or lower than the melting point of the fatty acid glycol ester.The resulting dispersion is said to have a superior pearlescent luster compared to pearlescent agent dispersions having only a single peak, because the smaller particles (crystals) block light and cause diffuse reflection.

[0009] Patent Document 5 proposes a pearly luster composition containing a fatty acid glycol ester, a fatty acid monoalkylolamide, an amphoteric surfactant or a nonionic surfactant, a glycolate salt, and water, and having crystals of the fatty acid glycol ester in the form of plates. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Publication No. 10-182343 [Patent Document 2] Special Publication No. 4-502636 [Patent Document 3] Japanese Patent Application Laid-Open No. 2002-348212 [Patent Document 4] Japanese Patent Application Laid-Open No. 2003-155214 [Patent Document 5] Japanese Patent Application Publication No. 9-111291 Summary of the Invention [Problem to be solved by the invention]

[0011] However, with the above-mentioned conventional techniques, it has been difficult to obtain a silky luster with a smooth and elegant shine. Regarding pearlizing agents, a technique is known in which a fatty acid glycol ester is used as a crystalline component in combination with a fatty acid monoalkanolamide or a surfactant, but the quantitative relationship between these and the types of components required to achieve the above-mentioned silky luster have not been investigated. While Patent Documents 1 to 3 mention pearly luster, they do not mention silky luster. Patent Document 4 includes examples containing a fatty acid glycol ester and an amidobetaine-type amphoteric surfactant, but does not contain a fatty acid monoalkanolamide. Patent Document 5 states that, based on the fact that the prior art described above produced needle-like crystals, adding glycolate as another raw material produces a pearly luster composition of plate-like crystals, and that it produces a composition with a texture different from that of the conventional needle-like crystals. However, the products actually produced in the examples were those in which sodium glycolate was added to a formulation that used a large amount of ethylene glycol distearate and 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine as an amphoteric surfactant, and the formulation in the examples was limited, and it was simply stated that, in such a limited formulation, when sodium glycolate was not added, the crystals were needle-like with a large aspect ratio, but when sodium glycolate was added, the crystals became plate-like.

[0012] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a silky gloss composition having a smooth and elegant silky gloss. [Means for solving the problem]

[0013] In order to solve the above problems, the present inventors have conducted extensive research and have found that by using (A) a fatty acid glycol ester, (B) a fatty acid monoalkanolamide having an amide bond -CONH-, and (C) an amidobetaine-type amphoteric surfactant, and by setting the content of component (A) and the mass ratio of the total amount of components (A) and (B) to component (C) within specific ranges, it is possible to obtain a gloss that has a sufficiently silky feel, and in particular a silky-like gloss that has a smooth and elegant gloss, thereby completing the present invention.

[0014] That is, the silky gloss composition of the present invention contains (A) a fatty acid glycol ester, (B) a fatty acid monoalkanolamide having an amide bond -CONH-, and (C) an amidobetaine-type amphoteric surfactant, and is characterized in that the content of component (A) is 5 to 38 mass %, and the mass ratio of the total amount of components (A) and (B) to component (C) is 5.0 to 13.0. [Effects of the Invention]

[0015] The silky gloss composition of the present invention has a silky gloss that is smooth and elegant.

[0016] The silky gloss composition of the present invention may have one or more properties that have been difficult to impart along with the silky finish, such as appropriate viscosity, stability over time, and no adhesion to blending equipment during cooling. Such properties and the configuration of the invention that realizes them will be apparent from the following description. [Brief explanation of the drawings]

[0017] [Figure 1] 3 is a photograph showing the appearance of the compositions of Example 3, Comparative Example 2, and Comparative Example 1. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present invention will be described in detail. The silky gloss composition of the present invention contains (A) a fatty acid glycol ester, (B) a fatty acid monoalkanolamide having an amide bond -CONH-, and (C) an amidobetaine amphoteric surfactant. In this specification, these are also referred to as component (A), component (B), and component (C).

[0019] (A) Fatty acid glycol ester is a component that imparts a silky gloss to the appearance and can also impart a silky gloss when blended into cosmetics, detergents, etc.

[0020] (A) Fatty acid glycol ester is not particularly limited, but examples thereof include those in which a fatty acid is ester-bonded to a hydroxyl group at at least one end of a glycol or a dehydration condensate thereof. Examples of glycols include, but are not particularly limited to, ethylene glycol, etc. The number of glycols in the glycol or the dehydration condensate thereof is not particularly limited, but is preferably 1 to 3. The fatty acid may be linear or branched, saturated or unsaturated, but is more preferably a linear saturated fatty acid.

[0021] The number of carbon atoms in the fatty acid is not particularly limited, but is preferably 14 to 22. The fatty acid may be a mixture of two or more kinds. Specific examples include palmitic acid (C16), stearic acid (C18), arachidic acid (C20), behenic acid (C22), etc., and specific examples of (A) fatty acid glycol esters include mono- or di-fatty acid monoethylene glycol, mono- or di-fatty acid diethylene glycol, mono- or di-fatty acid triethylene glycol, etc., which contain these as fatty acids. Among these, di-fatty acid monoethylene glycol is preferred.

[0022] Examples of fatty acid esters contained in the mono-fatty acid monoethylene glycol include C16 monoester, C18 monoester, C20 monoester, and C22 monoester.

[0023] Furthermore, examples of the fatty acid ester contained in the difatty acid monoethylene glycol include C16-C16 diesters, C16-C18 diesters, C16-C20 diesters, C16-C22 diesters, C18-C18 diesters, C18-C20 diesters, C18-C22 diesters, C20-C20 diesters, C20-C22 diesters, and C22-C22 diesters, and among these, difatty acid monoethylene glycols having fatty acids of C16 to C22 are preferred.

[0024] The fatty acids contained in the difatty acid monoethylene glycol are preferably 1 to 99 mass% C16, 1 to 99 mass% C18, 0.01 to 10 mass% C20, and 0.01 to 20 mass% C22, more preferably 20 to 70 mass% C16, 25 to 75 mass% C18, 0.01 to 5 mass% C20, and 1 to 10 mass% C22, and even more preferably 40 to 50 mass% C16, 45 to 55 mass% C18, 0.05 to 1 mass% C20, and 1 to 5 mass% C22.

[0025] The (A) fatty acid glycol ester may be used alone or in combination of two or more. Furthermore, as the (A) fatty acid glycol ester, for example, a commercially available product whose quasi-drug name is ethylene glycol distearate (whose cosmetic name is glycol distearate) can be used. Specifically, Parner SEG-A (manufactured by Miyoshi Oil & Fats Co., Ltd.), Genapol PMS, KHP-22 (manufactured by Clariant Japan Co., Ltd.), NIKKOL EGDS, NIKKOL PEARL-1222, NIKKOL Estepearl 10V, NIKKOL Estepearl 15V (manufactured by Nikko Chemicals Co., Ltd.), Unistar E-275, Unistar E-286 (manufactured by NOF Corporation), Cucina AGS-JP (manufactured by BASF Japan Co., Ltd.), EMALEX EG-di-S, EMALEX EGS-C (manufactured by Nippon Emulsion Co., Ltd.), SP Cisrol EGDS MBAL (manufactured by Croda Japan Co., Ltd.), PALMETER 5101 (manufactured by KLK OLEO Co., Ltd.) etc. can be mentioned, and these can be used alone or in combination of two or more.Among these, Parner SEG-A, Genapol PMS, NIKKOL Estepearl 15V are preferred.

[0026] (B) Fatty acid monoalkanolamide is a component that imparts a silky gloss and / or enables (A) fatty acid glycol ester to be dispersed in water.

[0027] (B) fatty acid monoalkanolamide has a -CONH- amide bond. When used in combination with (A) fatty acid glycol ester and (C) amidobetaine amphoteric surfactant, this fatty acid monoalkanolamide imparts a silky gloss, unlike fatty acid N-alkyl monoalkanolamides and fatty acid dialkanolamides, and the composition has an appropriate viscosity.

[0028] The fatty acid of (B) fatty acid monoalkanolamide may be linear or branched, saturated or unsaturated. The number of carbon atoms of the fatty acid is not particularly limited, but is preferably 6 to 24, more preferably 8 to 18. The fatty acid may be a mixture of two or more. Examples of fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, arachidic acid, coconut oil fatty acid, palm kernel oil fatty acid, palm oil fatty acid, etc. The alkanol of (B) fatty acid monoalkanolamide may be linear or branched, saturated or unsaturated. The number of carbon atoms of the alkanol is not particularly limited, but is preferably 1 to 6, more preferably 2 or 3. Examples of alkanols include ethanol, n-propanol, isopropanol, etc. Specific examples of (B) fatty acid monoalkanolamides include monoethanolamides, monopropanolamides, and monoisopropanolamides, each of which has a fatty acid such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, or coconut oil fatty acid. Among these, coconut oil fatty acid monoethanolamide and lauric acid monoethanolamide are preferred, with coconut oil fatty acid monoethanolamide being more preferred. The (B) fatty acid monoalkanolamides may be used singly or in combination of two or more.

[0029] (C) Amidobetaine amphoteric surfactant is a component that disperses (A) fatty acid glycol ester, or (A) fatty acid glycol ester and (B) fatty acid monoalkanolamide in water.

[0030] Examples of amidobetaine-type amphoteric surfactants include alkylamidopropyl betaine. Examples of alkylamidopropyl betaine include lauric acid amidopropyl betaine, coconut oil fatty acid amidopropyl betaine (cocamidopropyl betaine), palm kernel oil fatty acid amidopropyl betaine, myristate amidopropyl betaine, and isostearamidopropyl betaine. These may be used alone or in combination of two or more. Among these, lauric acid amidopropyl betaine and palm kernel oil fatty acid amidopropyl betaine are preferred, and palm kernel oil fatty acid amidopropyl betaine is more preferred. When the (C) amidobetaine-type amphoteric surfactant has a hydrocarbon chain that serves as a hydrophobic group, the hydrocarbon chain may be linear or branched, saturated or unsaturated. The number of carbon atoms in the hydrocarbon chain is not particularly limited, but is preferably 8 to 22, more preferably 8 to 18. The (C) amidobetaine-type amphoteric surfactant may be used alone or in combination of two or more.

[0031] The silky gloss composition of the present invention has a component (A) content of 5 to 38% by mass. A component (A) content of 5% by mass or more can impart a silky gloss, particularly a smooth and elegant silky gloss. A component (A) content of 38% by mass or less can impart a silky gloss, particularly a smooth and elegant silky gloss. The component (A) content is preferably 7% by mass or more, more preferably 9% by mass or more, from the viewpoints of imparting a silky gloss and providing a composition with a suitable viscosity, as well as suppressing adhesion to the wall of the blending kettle during cooling during the preparation of the composition. From the same viewpoints, the component (A) content is preferably 35% by mass or less, more preferably 25% by mass or less.

[0032] In the silky gloss composition of the present invention, the mass ratio of the total amount of components (A) and (B) to component (C) is 5.0 to 13.0. When this mass ratio is 5.0 or more, a silky gloss, particularly a silky gloss with a smooth and elegant luster, can be imparted, and low viscosity can be achieved. When this mass ratio is 13.0 or less, a silky gloss, particularly a silky gloss with a smooth and elegant luster can be imparted. The mass ratio is preferably 5.5 to 10.0, since it imparts a higher level of silky gloss, allows for a composition with a more appropriate viscosity, and can suppress deposition of material on the wall of a blending kettle during cooling during the preparation of the composition.

[0033] The mass ratio of component (A) to component (B) in the silky gloss composition of the present invention is not particularly limited, but is preferably 1.0 to 30.0. When this mass ratio is 1.0 to 30.0, it is possible to impart a silky gloss, particularly a silky gloss with a smooth and elegant luster. Furthermore, since it is possible to impart a silky gloss with a smooth and elegant luster and also to achieve an appropriate viscosity, this mass ratio is more preferably 1.0 to 18.0, even more preferably 1.3 to 15.0, particularly preferably 1.5 to 10.0, and most preferably 1.5 to 5.0.

[0034] The content of component (B) is not particularly limited, but is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and even more preferably 3.0% by mass or more, from the viewpoint of imparting a silky gloss, particularly a smooth and elegant silky gloss, and is preferably 10.0% by mass or less, more preferably 7.0% by mass or less, from the viewpoint of achieving an appropriate viscosity.

[0035] The content of component (C) is not particularly limited, but is preferably 1.0% by mass or more, more preferably 2.0% by mass or more, from the viewpoint of imparting a silky gloss, particularly a smooth and elegant silky gloss, and is preferably 10.0% by mass or less, more preferably 5.0% by mass or less, and even more preferably 3.0% by mass or less.

[0036] The silky gloss composition of the present invention uses a solvent, and water is preferred as the solvent.

[0037] The pearly luster composition of the present invention may contain other components in addition to components (A) to (C) and the solvent, provided that the effects of the present invention are not impaired. Examples of such other components include fatty acid alkanolamides other than component (B), amphoteric surfactants other than component (C), antioxidants, UV absorbers, pH adjusters, colorants, fragrances, preservatives, and salts.

[0038] The silky gloss composition of the present invention may contain a nonionic surfactant or anionic surfactant in addition to components (A) to (C) and the solvent, provided that the effects of the present invention are not impaired. However, from the viewpoint of obtaining the effects of the present invention, it is preferable that the content of these surfactants is small. The total content of nonionic surfactants or anionic surfactants, expressed as a mass ratio to component (C), is preferably 5 or less, more preferably 2 or less. Furthermore, in the present invention, the total content of nonionic surfactants or anionic surfactants other than components (A) to (C) and the solvent is preferably 10% by mass or less, more preferably 5% by mass or less. Examples of nonionic surfactants or anionic surfactants include those commonly used in cosmetics, detergents, etc. Nonionic surfactants include, but are not limited to, alkyl polyglycosides, polyoxyalkylene alkyl or alkenyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, sorbitan fatty acid esters, polyoxyalkylene sorbitol fatty acid esters, polyoxyalkylene glycerin fatty acid esters, polyglycerin fatty acid esters, fatty acid monoglycerides, polyethylene glycol fatty acid esters, polyoxyethylene hydrogenated castor oil, etc. Anionic surfactants include, but are not limited to, alkyl sulfates, polyoxyalkylene alkyl ether sulfates, polyoxyethylene alkyl ether sulfonates, polyoxyalkylene alkyl ether acetates, polyoxyalkylene alkyl ether phosphates, alkyl phosphates, N-acylmethyl taurines, acyl glutamates, acyloyl-β-alanines, alkyl sulfosuccinates, polyoxyalkylene alkyl sulfosuccinate sulfates, fatty acid salts, α-olefin sulfonates, alkyl sulfonates, etc.

[0039] In recent years, in the fields of cleansing agents and cosmetics, there has been a demand for products that are mild to the skin, and there is a tendency to avoid surfactants that are highly irritating. Highly irritating surfactants include surfactants containing sulfates and sulfate ester salts, and it is preferable to avoid such surfactants.

[0040] The silky gloss composition of the present invention can be obtained by mixing components (A) to (C) with a solvent, emulsifying at a temperature equal to or higher than the melting point of component (A), and then cooling. Cooling is performed by lowering the resulting emulsion to a temperature equal to or lower than the crystallization temperature of component (A). If other components are added, they are added at an appropriate time.

[0041] The silky gloss composition of the present invention hardly deposits any material on the walls of the blending kettle during cooling, so the entire composition can be stirred uniformly, the yield is good, and clogging is less likely to occur when passing the composition through a filter or the like during product filling.

[0042] From the viewpoint of stability, the viscosity of the silky gloss composition of the present invention at 25° C. is preferably 1000 mPa·s or more, and more preferably 2000 mPa·s or more. Furthermore, from the viewpoint of good handleability and improved flexibility in formulation of cosmetics, detergents, etc., the viscosity at 25° C. is preferably 10000 mPa·s or less, and more preferably 6000 mPa·s or less. From the above points of view, the viscosity at 25° C. is preferably 1000 mPa·s or more and 10000 mPa·s or less, and more preferably 2000 mPa·s or more and 6000 mPa·s or less.

[0043] The crystal particles contained in the silky gloss composition of the present invention are elongated plate-like, rather than needle-like. Specifically, when the long side of a crystal particle is taken as the length, the ratio of the length to the width (aspect ratio) is preferably 1.1 to 4.4, more preferably 1.5 to 3.5, and even more preferably 2.0 to 3.0. An aspect ratio within this range results in a good silky feel. Furthermore, a composition with appropriate viscosity can be obtained, which can prevent deposits on the walls of a blending kettle during cooling during the preparation of the composition. Here, the ratio of the length to the width is the average value measured for 100 crystal particles randomly selected using an optical microscope after adding water.

[0044] In the silky gloss composition of the present invention, if the average particle size of the crystal particles contained therein is too small, the gloss will be weak and the silkiness will be lacking, so it is preferably 15 μm or more, more preferably 21 μm or more. When the average particle size is within this range, the silkiness will be good. On the other hand, if the average particle size is too large, the gloss will be sharp and metallic, and the silkiness will be lacking, so it is preferably 100 μm or less, more preferably 59 μm or less, and even more preferably 40 μm or less. When the average particle size is within this range, the silkiness will be good. Here, the average particle size is the average value of the longitudinal lengths of 100 crystal particles randomly selected using an optical microscope after adding water.

[0045] The silky gloss composition of the present invention has a silky gloss, particularly a silky gloss with a smooth and elegant luster, and also has low viscosity and excellent stability over time, so it can be suitably used in cosmetics and detergents such as shampoos, rinses, treatments, body soaps, and hand soaps. [Example]

[0046] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. The blending amounts shown in Tables 1A and 1B are expressed in mass % (active component). The components shown in Tables 1A and 1B were mixed in a blending kettle, stirred with a stirrer at 70-80°C until dissolved, and then cooled to 40°C to prepare a composition. The resulting composition was evaluated for pearly luster, pearly silkiness, viscosity, and stability, and the presence or absence of deposits on the walls of the blending kettle during cooling was confirmed. The crystalline particles contained in the composition were also observed. Specifically, the following materials were used: Component (A) Raw materials whose quasi-drug labeling name is ethylene glycol distearate (whose cosmetic labeling name is glycol distearate) Components (B) and (B') Coconut oil fatty acid monoethanolamide: Amycol CMEA (Miyoshi Oil Co., Ltd.) Coconut oil fatty acid diethanolamide: Amycol CDE-1 (Miyoshi Oil Co., Ltd.) Coconut oil fatty acid N-methylethanolamide: Aminone C-11S (Kao Corporation) Components (C) and (C') Palm kernel oil fatty acid amidopropyl betaine: Amphorex PB-1 (Miyoshi Oil Co., Ltd.) Lauryl amidopropyl betaine: Amphorex LB-2 (Miyoshi Oil Co., Ltd.) 2-Alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine: Amphorex 50 (Miyoshi Oil Co., Ltd.) Lauryl hydroxysulfobetaine: Amphorex LSB (Miyoshi Oil Co., Ltd.)

[0047] [Pearl Luster] The evaluation was based on the following criteria. ◯: Excellent gloss △: Glossy, but somewhat weak ×: No gloss

[0048] [Silky pearl feel] Evaluation was based on the following criteria, with a score of 3 or higher being considered pass. In the table, "-" indicates that no pearly luster was obtained and therefore no evaluation of silkiness was performed. 4: Smooth and elegant silky luster 3: Smooth, silky luster, but somewhat weak 2: It has a sharp metallic sheen and no silky feel. 1: The particles are fine, so the gloss is weak and there is no silky feel.

[0049] [viscosity] The viscosity (mPa·s at 25°C) was measured two days after preparation using a TVB-10 viscometer (manufactured by Toki Sangyo Co., Ltd.) and evaluated according to the following criteria, with a score of ○ or higher being considered a pass. ◎: Viscosity is 2000 mPa·s or more and 6000 mPa·s or less ○: Viscosity is 1000 mPa·s or more but less than 2000 mPa·s or more than 6000 mPa·s but less than 10000 mPa·s △: Viscosity is over 10,000 mPa·s and up to 100,000 mPa·s ×: Viscosity less than 1000 mPa·s or more than 100,000 mPa·s

[0050] [Stability] After storing in a thermostatic chamber at 40°C for 7 days, the sample was visually observed and evaluated according to the following criteria. ○: No separation or precipitation is observed, and the mixture is uniform. ×: Separation or precipitation is observed

[0051] [Adhesion to wall during cooling] When the composition was prepared, the presence or absence of deposits on the wall of the preparation kettle when the composition was cooled to 40°C was evaluated according to the following criteria, with a score of ◯ or better being considered a pass. ◎: No adhesion to the wall (the whole is mixed evenly) ○: Almost no adhesion to the wall (there is a small amount of adhesion, but the whole is mixed evenly) △: There is some adhesion to the wall (some parts are not mixed evenly) ×: There is a lot of material adhering to the wall (the whole mixture is not mixed evenly and is uneven)

[0052] [Observation of crystal particles] Crystal grain shape After diluting the composition 10 times with water, the crystal particles were observed under an optical microscope (Leica DM2700M). The aspect ratio (ratio of the vertical length to the horizontal width) of the crystal particles was calculated as the average value of 100 randomly selected crystal particles.

[0053] Crystal particle size After diluting the composition 10 times with water, the crystal particles were observed under an optical microscope (Leica DM2700M). The average particle size of the crystal particles was calculated as the average length of 100 randomly selected crystal particles.

[0054] The results of the above evaluations are shown in Tables 1A and 1B. Figure 1 shows the appearances of the compositions of Example 3, Comparative Example 2, and Comparative Example 1. Starting from the left bottle, the compositions are Example 3, Comparative Example 2, and Comparative Example 1, with Example 3 having a smooth, elegant, silky luster, Comparative Example 2 having a sharp, metallic luster and no silky feel, and Comparative Example 1 having a weak luster and no silky feel due to the fine particles.

[0055] [Table 1A]

[0056] [Table 1B]

Claims

1. A silky gloss composition comprising (A) a fatty acid glycol ester, (B) a fatty acid monoalkanolamide having an amide bond -CONH-, and (C) an amidobetaine-type amphoteric surfactant, wherein the content of component (A) is 5 to 38% by mass, and the mass ratio of the total amount of components (A) and (B) to component (C) is 5.0 to 13.

0.

2. 2. The silky gloss composition according to claim 1, wherein the mass ratio of component (A) to component (B) is 1.0 to 30.

0.

3. 3. The silky gloss composition according to claim 1, wherein the crystal particles have an aspect ratio of 1.1 to 4.

4.

4. 4. The silky gloss composition according to claim 3, wherein the average particle size of the crystal particles is 15 to 100 μm.

5. A method for producing a silky gloss composition, comprising mixing (A) a fatty acid glycol ester, (B) a fatty acid monoalkanolamide having an amide bond -CONH-, and (C) an amidobetaine-type amphoteric surfactant with a solvent, emulsifying the mixture at a temperature equal to or higher than the melting point of component (A), and then cooling the mixture to obtain a silky gloss composition having a content of component (A) of 5 to 38% by mass and a mass ratio of the total amount of components (A) and (B) to component (C) of 5.0 to 13.0.

Images