Cleaning composition

Abstract

To provide a detergent composition using N-acyl acidic amino acid, having excellent solubility even being low pH, good storage stability, sufficient foaming and foam quality.SOLUTION: Disclosed herein is a detergent composition including the following component (A), (B), and / or (C), wherein the weight ratio of the component (A) and the component (B), (A / B), is 0.01-0.80, and the weight ratio of the component (C) and the component (B), (C / B), is 0.00-0.32: (A) N-unsaturated acyl acidic amino acid (here, the unsaturated acyl is a linear acyl having a carbon atom number of 8-20); (B) N-saturated acyl acidic amino acid (here, the saturated acyl is a linear acyl having a carbon atom number of 8-14); and (C) N-saturated acyl acidic amino acid (here, the saturated acyl is a linear acyl having a carbon atom number of 16-20).SELECTED DRAWING: None

Description

[Technical Field]

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

[0002] Anionic surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates, and alkylbenzene sulfonates are widely used as surfactants in liquid cleansers such as face washes, body washes, and hair shampoos due to their high solubility and ability to foam in the weakly acidic range (similar pH to that of skin).However, these anionic surfactants have been associated with concerns such as slow foam loss and skin irritation.

[0003] In this context, N-acyl acidic amino acids, which are carboxylic acid type anionic surfactants, are used as detergents that are low-irritation, highly safe, and have a pleasant feel after use (Patent Document 1). However, N-acyl acidic amino acids have the problem of producing large, creamy foam with difficulty, and as a carboxylic acid type anionic surfactant, they are prone to precipitation at low pH.

[0004] There have been reports of research into improving the functionality of N-acylglutamic acid, a type of N-acyl acidic amino acid, by adjusting the fatty acid composition (Patent Documents 2 and 3). However, these reports concern powder, granule, or cream-type cleansers, and there have been no reports on improving the stability or foaming of liquid cleansers. There has been a demand for the development of a liquid cleanser that is stable in quality and foams well, even at low pH levels, and does not precipitate. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 6-158089 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-51945 [Patent Document 3] Japanese Patent Application Laid-Open No. 2003-34670 Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a detergent composition using an N-acyl acidic amino acid, which has excellent solubility even at low pH, good storage stability, and satisfactory foaming and foam quality. [Means for solving the problem]

[0007] As a result of extensive investigation, the present inventors have found that the following components (A), (B), and / or (C): (A) N-unsaturated acyl acidic amino acid (wherein the unsaturated acyl is a linear acyl having 8 to 20 carbon atoms); (B) N-saturated acyl acidic amino acids (wherein saturated acyl is a linear acyl having 8 to 14 carbon atoms); and (C) N-saturated acyl acidic amino acid (wherein saturated acyl is a linear acyl having 16 to 20 carbon atoms) The present inventors have discovered the following advantages: a cleanser composition comprising a higher content of component (B) than component (C), which exhibits excellent solubility and no precipitation even at low pH (i.e., on the acidic side), contributing to storage stability, and excellent foaming and foam quality, such as thick and bouncy foam, when lathered. The low pH of the cleanser composition offers the advantages of inhibiting bacterial growth and improving storage stability, and achieving a pH similar to that of skin, improving skin applicability. These advantages make the cleanser composition particularly suitable for use in cosmetics, which are luxury items frequently used daily and have high demands for a comfortable feel, even among a wide range of applications in a variety of fields, including diverse industrial products and foods.

[0008] That is, the present invention is as follows. [1] Contains the following components (A), (B), and / or (C): the weight ratio (A / B) of component (A) to component (B) is 0.01 to 0.80; the weight ratio (C / B) of the component (C) to the component (B) is 0.00 to 0.32; Cleaning composition: (A) N-unsaturated acyl acidic amino acid (wherein the unsaturated acyl is a linear acyl having 8 to 20 carbon atoms); (B) N-saturated acyl acidic amino acids (wherein saturated acyl is a linear acyl having 8 to 14 carbon atoms); and (C) N-saturated acyl acidic amino acids (wherein saturated acyl is a straight-chain acyl having 16 to 20 carbon atoms). [2] The detergent composition according to the above [1], wherein the component (A) is an N-unsaturated acyl acidic amino acid (wherein the unsaturated acyl is a linear acyl having 16 to 20 carbon atoms). [3] The detergent composition according to [2] above, wherein component (A) is an N-oleoyl acidic amino acid. [4] The detergent composition according to any one of the above [1] to [3], wherein component (B) comprises one or more amino acids selected from the group consisting of N-capryloyl acidic amino acid, N-caproyl acidic amino acid, N-lauroyl acidic amino acid, and N-myristoyl acidic amino acid. [5] The detergent composition according to [4] above, wherein component (B) contains an N-lauroyl acidic amino acid and / or an N-myristoyl acidic amino acid. [6] The detergent composition according to any one of the above [1] to [5], wherein the component (C) contains an N-palmitoyl acidic amino acid and / or an N-stearoyl acidic amino acid. [7] The detergent composition according to any one of the above [1] to [6], wherein the N-unsaturated acyl acidic amino acid is N-unsaturated acyl glutamic acid, and the N-saturated acyl acidic amino acid is N-saturated acyl glutamic acid. [8] The cleaning composition according to any one of the above [1] to [7], wherein the weight ratio (A / B) of the component (A) to the component (B) is 0.02 to 0.60. [9] The cleaning composition according to any one of the above [1] to [8], wherein the weight ratio (C / B) of component (C) to component (B) is 0.01 to 0.30.

[10] The cleaning composition according to any one of the above [1] to [9], which has a pH of 4.0 to 7.0.

[11] The cleaning composition according to

[10] above, having a pH of 4.5 to 7.0.

[12] A cosmetic comprising the cleanser composition according to any one of [1] to

[11] above.

[13] The cosmetic material according to

[12] above, having a pH of 4.5 to 7.0. [Effects of the Invention]

[0009] The cleanser composition of the present invention has the effects of exhibiting excellent solubility even at low pH, good storage stability, and satisfactory foaming and foam quality. The cleanser composition of the present invention has good applicability to skin, making it particularly suitable for use as a cosmetic. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention relates to a composition comprising the following components (A), (B), and / or (C): (A) N-unsaturated acyl acidic amino acid (wherein the unsaturated acyl is a linear acyl having 8 to 20 carbon atoms); (B) N-saturated acyl acidic amino acids (wherein saturated acyl is a linear acyl having 8 to 14 carbon atoms); and (C) N-saturated acyl acidic amino acid (wherein saturated acyl is a linear acyl having 16 to 20 carbon atoms) The present invention provides a cleaning composition (hereinafter simply referred to as "composition") comprising:

[0011] In the present specification, the term "linear acyl having n carbon atoms" refers to a C n-1 H m It refers to acyl represented by -CO- (hydrogen atoms may be substituted). When the acyl is saturated, m=2n-1, and when the acyl is unsaturated, m is appropriately determined according to the number of carbon atoms and the number of unsaturations.

[0012] As used herein, the term "N-acyl acidic amino acid (wherein acyl is a straight-chain acyl having n carbon atoms)" refers to, in the free form, Cn-1 H m -CO-NH-CHR-COOH (H m The hydrogen atom represented by may be substituted. m is as defined above. R represents the side chain of an acidic amino acid. ) That is, "N-acyl acidic amino acid" refers to a compound in which one hydrogen atom on the amino group of an acidic amino acid is substituted with acyl. "N-saturated acyl acidic amino acid" refers to an N-acyl acidic amino acid in which the acyl is saturated acyl, and "N-unsaturated acyl acidic amino acid" refers to an N-acyl acidic amino acid in which the acyl is unsaturated acyl. "N-acyl acidic amino acid" may be a free form of N-acyl acidic amino acid or a salt of N-acyl acidic amino acid.

[0013] The salt of N-acyl acidic amino acid includes, for example, inorganic salt and organic salt.The inorganic salt includes, for example, salt of metal (for example, monovalent metal such as lithium, sodium, potassium, rubidium, cesium, etc., and divalent metal such as calcium, magnesium, zinc, etc.) and salt of inorganic base (for example, ammonia).The organic salt includes, for example, salt of organic base (for example, ethylenediamine, propylenediamine, ethanolamine, monoalkylethanolamine, dialkylethanolamine, diethanolamine, triethanolamine, lysine, arginine, histidine, ornithine).

[0014] As used herein, N-acyl acidic amino acids are conveniently referred to as C n-1 H m In this specification, a "linear acyl having n carbon atoms" and a fatty acid derived therefrom may be represented by "Cn." For example, "lauroyl acidic amino acid (C12)" refers to a compound (C12) in which one hydrogen atom on the amino group of an acidic amino acid is substituted with a lauroyl group, which is an acyl group derived from lauric acid (C12). 11 H 23CO-NH-CHR-COOH, where R represents the side chain of the acidic amino acid. When the N-acyl acidic amino acid is obtained from a fatty acid, the N-acyl acidic amino acid is, for example, C n-1 H m The fatty acid derivative represented by -COX (X is any monovalent group, for example, a halogen atom selected from the group consisting of fluorine, chlorine, bromine, and iodine) can be obtained by reacting with a salt of an acidic amino acid (examples of the salt include the inorganic salts and organic salts described above).

[0015] Examples of the N-unsaturated acyl acidic amino acid of component (A) include N-monounsaturated acyl acidic amino acids, N-diunsaturated acyl acidic amino acids, N-triunsaturated acyl acidic amino acids, N-tetraunsaturated acyl acidic amino acids, and N-pentaunsaturated acyl acidic amino acids. The unsaturated acyl of the N-unsaturated acyl acidic amino acid is a linear acyl having 8 to 20 carbon atoms, preferably 16 to 20 carbon atoms.

[0016] Monounsaturated fatty acids from which N-monounsaturated acyl acidic amino acids are derived include, for example, myristoleic acid (C14), palmitoleic acid (C16), oleic acid (C18), elaidic acid (C18), vaccenic acid (C18), gadoleic acid (C20), and eicosenoic acid (C20).

[0017] Diunsaturated fatty acids from which N-diunsaturated acyl acidic amino acids are derived include, for example, linoleic acid (C18) and eicosadienoic acid (C20).

[0018] Triunsaturated fatty acids from which N-triunsaturated acyl acidic amino acids are derived include, for example, α-linolenic acid (C18), γ-linolenic acid (C18), and pinolenic acid (C18).

[0019] Tetraunsaturated fatty acids from which N-tetraunsaturated acyl acidic amino acids are derived include, for example, stearidonic acid (C18), arachidonic acid (C20), and eicosatetraenoic acid (C20).

[0020] Pentaunsaturated fatty acids from which N-pentaunsaturated acyl acidic amino acids are derived include, for example, bosseopentaenoic acid (C18) and eicosapentaenoic acid (C20).

[0021] The N-unsaturated acyl acidic amino acid of component (A) is most preferably an N-oleoyl acidic amino acid.

[0022] Examples of the N-saturated acyl acidic amino acid of component (B) (wherein saturated acyl is a linear acyl having 8 to 14 carbon atoms) include capryloyl acidic amino acid (C8), caproyl acidic amino acid (C10), lauroyl acidic amino acid (C12), and myristoyl acidic amino acid (C14). Component (B) may contain one type of N-saturated acyl acidic amino acid, or two or more types of N-saturated acyl acidic amino acids. That is, component (B) may contain one or more amino acids selected from the group consisting of N-capryloyl acidic amino acid, N-caproyl acidic amino acid, N-lauroyl acidic amino acid, and N-myristoyl acidic amino acid. Component (B) preferably contains N-lauroyl acidic amino acid and / or N-myristoyl acidic amino acid. The total content of N-lauroyl acidic amino acid and N-myristoyl acidic amino acid in component (B) may be, for example, 50% by weight or more, preferably 60% by weight or more, more preferably 70% by weight or more, even more preferably 75% by weight or more, even more preferably 80% by weight or more, and particularly preferably 85% by weight or more. More specifically, the total content of N-lauroyl acidic amino acid and N-myristoyl acidic amino acid in component (B) may be, for example, 50 to 100% by weight, preferably 60 to 100% by weight, more preferably 70 to 100% by weight, even more preferably 75 to 100% by weight, even more preferably 80 to 100% by weight, and particularly preferably 85 to 100% by weight.

[0023] Examples of the N-saturated acyl acidic amino acid of component (C) (wherein saturated acyl is a linear acyl having 16 to 20 carbon atoms) include palmitoyl acidic amino acid (C16) and stearoyl acidic amino acid (C18). Component (C) may contain one type of N-saturated acyl acidic amino acid, or two or more types of N-saturated acyl acidic amino acids. That is, component (C) may contain N-palmitoyl acidic amino acid and / or N-stearoyl acidic amino acid.

[0024] The "acidic amino acid" in "N-acyl acidic amino acid" refers to an amino acid having an acidic side chain. Examples of acidic amino acids include glutamic acid and aspartic acid.

[0025] The weight ratio (A / B) of component (A) to component (B) may be 0.01 or more, preferably 0.02 or more, more preferably 0.03 or more, and even more preferably 0.04 or more, from the viewpoint of improving solubility at low pH by component (A). The weight ratio (A / B) of component (A) to component (B) may also be 0.80 or less, preferably 0.60 or less, more preferably 0.40 or less, and even more preferably 0.35 or less, from the viewpoint of suppressing a decrease in foaming due to a high content of component (A), and contributing to rapid foaming and solution stability due to a high content of component (B). More specifically, the weight ratio (A / B) of component (A) to component (B) may be 0.01 to 0.80, preferably 0.02 to 0.60, more preferably 0.03 to 0.40, and even more preferably 0.04 to 0.35. Alternatively, from the viewpoint of further improving the foam volume, the weight ratio (A / B) of component (A) to component (B) may be preferably 0.05 or more, more preferably 0.06 or more, even more preferably 0.07 or more, and particularly preferably 0.08 or more. From the viewpoint of further improving the foam volume, the weight ratio (A / B) of component (A) to component (B) may be preferably 0.30 or less, more preferably 0.25 or less, even more preferably 0.20 or less, and particularly preferably 0.15 or less. From the viewpoint of further improving the foam volume, the weight ratio (A / B) of component (A) to component (B) may be preferably 0.05 to 0.30, more preferably 0.06 to 0.25, even more preferably 0.07 to 0.20, and particularly preferably 0.08 to 0.15.

[0026] The weight ratio (C / B) of component (C) to component (B) may be 0.00 or more. When the weight ratio (C / B) of component (C) to component (B) is 0.00, component (C) is not included. From the viewpoint of the contribution of component (C) to improving foam quality (density), the weight ratio (C / B) of component (C) to component (B) may be preferably 0.01 or more, more preferably 0.02 or more, even more preferably 0.04 or more, and particularly preferably 0.05 or more. The weight ratio (C / B) of component (C) to component (B) may also be 0.32 or less, preferably 0.30 or less, more preferably 0.27 or less, even more preferably 0.24 or less, and particularly preferably 0.21 or less, from the viewpoints of preventing a decrease in stability due to precipitation when the content of component (C) is high, and of the contribution of a high content of component (B) to the speed of foaming and the solution stability. More specifically, the weight ratio (C / B) of component (C) to component (B) may be 0.00 to 0.32, preferably 0.01 to 0.30, more preferably 0.02 to 0.27, even more preferably 0.04 to 0.24, and particularly preferably 0.05 to 0.21. Alternatively, from the viewpoint of easier preparation of the cleansing composition of the present invention by reducing the number of components, the weight ratio (C / B) of component (C) to component (B) may be 0.00 to 0.32, preferably 0.00 to 0.30, more preferably 0.00 to 0.27, even more preferably 0.00 to 0.24, and particularly preferably 0.00 to 0.21.

[0027] The cleaning composition of the present invention may contain components (A), (B), and / or (C) in an aqueous medium. Any aqueous solvent can be used as the aqueous medium. Examples of the aqueous medium include aqueous solutions. The aqueous solution may or may not have buffering capacity. Examples of aqueous solutions include water (e.g., distilled water, sterile distilled water, purified water, and physiological saline), phosphate buffer, Tris-hydrochloric acid buffer, TE (Tris-EDTA) buffer, carbonate buffer, borate buffer, tartrate buffer, glycine buffer, citrate buffer, and acetate buffer.

[0028] The content of component (A) is not particularly limited, as it varies depending on various conditions such as the type and concentration of other components contained in the composition of the present invention and pH, but from the viewpoint of improving solubility at low pH, it may be, for example, 1% by weight or more, preferably 2% by weight or more, and more preferably 3% by weight or more. Furthermore, from the viewpoint of reducing foaming when a large amount of component (A) is contained, the content of component (A) may be, for example, 25% by weight or less, preferably 23% by weight or less, and more preferably 22% by weight or less. More specifically, the content of component (A) may be, for example, 1 to 25% by weight, preferably 2 to 23% by weight, and more preferably 3 to 22% by weight.

[0029] The content of component (B) is not particularly limited, as it varies depending on various conditions such as the type and concentration of other components contained in the composition of the present invention and pH. However, from the viewpoint of foaming speed, contribution to solution stability, etc., it may be, for example, 60% by weight or more, preferably 65% ​​by weight or more, and more preferably 70% by weight or more. The content of component (B) may also be, for example, 99% by weight or less, preferably 97% by weight or less, and more preferably 95% by weight or less. More specifically, the content of component (B) may be, for example, 60 to 99% by weight, preferably 65 to 97% by weight, and more preferably 70 to 95% by weight.

[0030] The content of component (C) is not particularly limited, as it varies depending on various conditions such as the type and concentration of other components contained in the composition of the present invention and pH, but may be 0% by weight or more. When the content of component (C) is 0% by weight, component (C) is not contained. From the viewpoint of contributing to improving foam quality (density), the content may be, for example, 0.1% by weight or more, preferably 1% by weight or more, and more preferably 5% or more. Furthermore, from the viewpoint that a large amount of component (C) reduces stability due to precipitation, the content may be, for example, 20% by weight or less, preferably 18% by weight or less, and more preferably 16% by weight or less. More specifically, the content of component (C) may be, for example, 0 to 20% by weight, preferably 1 to 18% by weight, and more preferably 5 to 16% by weight.

[0031] The composition of the present invention is preferably weakly acidic from the viewpoints of storage stability due to the inhibition of bacterial growth (antiseptic effect) and low skin irritation due to a pH equivalent to that of skin (weakly acidic). The pH of the composition of the present invention may be, for example, 4.0 to 7.0, preferably 4.5 to 7.0 from the viewpoint of achieving a pH equivalent to that of skin, and more preferably 4.8 to 6.5. The composition of the present invention has excellent solubility even at low pH, thereby suppressing precipitation, and in this respect also exhibits excellent storage stability. Furthermore, while anionic surfactants generally tend to foam less as the pH decreases, the composition of the present invention exhibits good foaming even at low pH. The pH can be adjusted using a pH adjuster. Examples of pH adjusters include the aqueous solutions (buffer solutions) described above, acidic substances (e.g., hydrochloric acid, sulfuric acid, nitric acid, citric acid), and alkaline substances (e.g., hydroxides of alkali metals such as sodium and potassium, and alkaline earth metals such as calcium).

[0032] The composition of the present invention may also contain other ingredients such as additional cleansing ingredients, polyhydric alcohols, thickeners, stabilizers, preservatives, fragrances, colorants, etc. The specific types and amounts of these ingredients can be determined as appropriate.

[0033] Examples of additional cleansing components include surfactants such as anionic surfactants, amphoteric surfactants, and nonionic surfactants, and fine solids (eg, microspheres, scrubs).

[0034] Anionic surfactants contain one or more anionic groups. Examples of anionic groups include carboxyl groups, sulfonic acid groups, sulfate groups, and phosphate groups. Examples of anionic surfactants include higher fatty acids, N-acyl amino acids, N-acyltaurines, alkyl ether carboxylic acids, alkyl phosphates, polyoxyethylene alkyl ether phosphates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, sulfonic acid compounds with alkyl chains, and salts thereof.

[0035] The amphoteric surfactant contains one or more anionic groups as described above and one or more cationic groups. Examples of the cationic group include an ammonium group, a primary amino group, a secondary amino group, a tertiary amino group, and a quaternary amino group. Examples of the amphoteric surfactant include an amidobetaine amphoteric surfactant, an acetate betaine amphoteric surfactant, a sulfobetaine amphoteric surfactant, and an imidazoline amphoteric surfactant (e.g., lauroamphoacetic acid or a salt thereof).

[0036] Examples of nonionic surfactants include alkyl polyglucosides in which sugar and higher alcohol are bonded via glycoside bonds.

[0037] Examples of polyhydric alcohols include dihydric alcohols (e.g., ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butylene glycol, 1,3-butylene glycol, 2,3-butylene glycol, 1,4-butanediol, 2-butene-1,4-diol, 1,5-pentanediol, 1,2-pentanediol, isoprene glycol, hexylene glycol, diethylene glycol, dipropylene glycol, monoglycerides (monoacylglycerols)), trihydric alcohols (e.g., glycerin, trimethylolpropane, 1,2,6-hexanetriol), tetrahydric alcohols (e.g., diglycerin, pentaerythritol), higher hydric alcohols, and salts thereof (e.g., the inorganic salts and organic salts described above). Examples of higher hydric alcohols include optionally substituted sugar alcohols (e.g., monosaccharide alcohols such as sorbitol, mannitol, sucrose, glucose, and mannose, disaccharide alcohols such as trehalose, and polysaccharide alcohols such as hyaluronic acid and xanthan gum), as well as polymers of the above-mentioned dihydric to tetrahydric alcohols (e.g., polyglycols and polyglycerins), and salts thereof (e.g., the above-mentioned inorganic salts and organic salts). The polyhydric alcohol may preferably be a dihydric to tetrahydric alcohol, and more preferably a dihydric or trihydric alcohol.

[0038] Examples of thickeners include carrageenan, dextrin, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, polyacrylic acid, polymethacrylic acid, carboxyvinyl polymer (carbomer), (acrylic acid / C10-30 alkyl acrylate) copolymer, and xanthan gum.

[0039] Stabilizers include, for example, ascorbic acid, sodium pyrosulfite, and EDTA.

[0040] Examples of preservatives include ethyl parahydroxybenzoate, sodium benzoate, salicylic acid, sorbic acid, parabens (methylparaben, propylparaben, etc.), and sodium hydrogen sulfite.

[0041] Fragrances include, for example, natural fragrances and synthetic fragrances. Natural fragrances include, for example, rose oil, jasmine oil, neroli oil, lavender oil, ylang-ylang oil, tuberose oil, clary sage oil, clove oil, peppermint oil, geranium oil, patchouli oil, sandalwood oil, cinnamon oil, coriander oil, nutmeg oil, pepper oil, lemon oil, orange oil, bergamot oil, opoponax oil, vetiver oil, orris oil, and oakmoss oil. Examples of synthetic fragrances include limonene (orange), β-caryophyllene (woody), cis-3-hexenol (fresh green young leaves), linalool (lily of the valley), farnesol (fresh green floral notes), β-phenylethyl alcohol (rose), 2,6-nonadienal (violet, cucumber), citral (lemon), α-hexyl cinnamic aldehyde (jasmine), β-ionone (violet when diluted), and ι-carvone (spearmint). ), cyclopentadecanone (musk), linalyl acetate (bergamot, lavender), benzyl benzoate (balsam), gamma-undecalactone (peach), eugenol (clove), rose oxide (green floral), indole (when diluted, becomes jasmine), phenylacetaldehyde dimethyl acetal (hyacinth), aurantiol (orange flower), and menthol (peppermint) (the numbers in parentheses indicate the fragrance).

[0042] Examples of pigments include organic pigments (e.g., red pigments such as Red No. 201, blue pigments such as Blue No. 404, orange pigments such as Orange No. 203, yellow pigments such as Yellow No. 205, green pigments such as Green No. 3, organic lake pigments such as zirconium lake, and natural pigments such as chlorophyll), and inorganic pigments (e.g., white pigments such as titanium oxide, colored pigments such as iron oxide, extender pigments such as talc, and pearl pigments such as mica).

[0043] The composition of the present invention can be provided in various forms, such as a liquid, a gel, a paste, a cream, or a foam.

[0044] The composition of the present invention can be made into a cosmetic in any form applicable to, for example, the skin, hair, scalp, etc. according to conventional methods. The cosmetic of the present invention is suitable for uses such as body shampoo, hand soap, facial cleanser, cleansing lotion, cleansing cream, massage cream, hair shampoo, etc. as a cleaning agent for animals such as humans. The preferred properties (e.g., pH) of the cosmetic of the present invention are the same as the preferred properties of the composition of the present invention described above.

Examples

[0045] Next, examples are shown to explain the present invention in more detail, but the present invention is not limited to the following examples.

[0046] <Production Example of N-Acyl Glutamic Acid> An acid chloride composed of a mixture of each fatty acid composition was reacted sufficiently with a glutamic acid salt in a reaction amount under basic conditions. After the reaction was completed, an acid was added for crystallization, and then through a filtration and drying process, powdery N-acyl glutamic acid was obtained. It was confirmed that the obtained N-acyl glutamic acid had fully reacted by HPLC.

[0047] <Preparation Methods of Compositions of Examples 1 to 5 and Comparative Examples 1 to 4> Using the acid chlorides of each fatty acid composition described in Table 1, each N-acyl glutamic acid obtained as described in the production example was neutralized with an aqueous sodium hydroxide solution to obtain an aqueous solution of sodium N-acyl glutamic acid. The obtained aqueous solution was adjusted to pH 4.5 and a concentration of 10 wt% to obtain a cleaning agent composition. The obtained cleaning agent composition was used in the test. The results are shown in Table 1.

[0048] <Preparation Methods of Compositions of Example 6 and Comparative Example 5> Using the acid chlorides of the fatty acid compositions used in Example 1 and Comparative Example 1, the N-acylglutamic acids obtained as described in the Production Examples were neutralized with aqueous sodium hydroxide to obtain 25% aqueous solutions of sodium N-acylglutamate. The raw materials containing sodium N-acylglutamate listed in Table 2 were mixed by stirring at 80°C, then slowly cooled to room temperature and adjusted to a pH of 5.0 to obtain detergent compositions. The resulting detergent compositions were filled into pump former containers and used in tests. The results are shown in Table 2.

[0049] <Storage stability evaluation> The liquid detergent composition prepared as described above was filled into a 50 ml vial and allowed to stand at room temperature for one week. Thereafter, the liquid detergent composition was visually observed for the presence or absence of precipitates and evaluated according to the following criteria. ○: Transparent liquid ×: Cloudy liquid

[0050] <Foam volume evaluation> Exactly 2 g of the prepared liquid cleanser composition was placed in a 500 ml beaker and diluted to 100 g with warm water at 35° C. Thereafter, the mixture was whipped for 10 seconds using a commercially available hand mixer, and the amount of foam immediately thereafter was read using the scale on the beaker and evaluated according to the criteria described below. a: Foam volume 251mL or more b: Foam volume 225-250mL c: Foam volume 201-225mL d: Foam volume is 200mL or less

[0051] <Foam quality evaluation> Dynamic viscoelasticity measurements were performed on the foam discharged from the pump foamer container using a rheometer (AR-G2, TA Instruments) (measuring jig: aluminum cone plate diameter 40 mm, cone angle 2°, measurement temperature: 35°C). The obtained Bingham yield value (Pa) was used to evaluate the foam according to the following criteria. (It is generally reported that a high Bingham yield value indicates a chewy, firm foam.) a: Bingham yield value is 10.1 Pa or more b: Bingham yield value 7.6 to 10.0 Pa c: Bingham yield value 5.1 to 7.5 Pa d: Bingham yield value is 5.0 Pa or less

[0052] <Sensory evaluation test> [Evaluation method] A test was conducted by a panel of 10 experts, who rated the amount of foam, the elasticity of the foam, and the moisturizing feeling after rinsing on a 5-point scale using the following criteria, and then calculated the average score to determine the product.

[0053] [Evaluation criteria] 5 points: very good 4 points: Good 3 points: Normal 2 points: slightly poor 1 point: Defective

[0054] [Judgment criteria] a: Average score of 4 points or more b: Average score 3 points or more but less than 4 points c: Average score 2 points or more but less than 3 points d: Average score less than 2 points

[0055] [Table 1]

[0056] [Table 2]

[0057] The results shown in Tables 1 and 2 demonstrate that the cleanser composition of the present invention is excellent in storage stability due to the suppression of deposits, satisfaction with lathering and foam quality as indicated by the thickness and elasticity of the lather when lathered, and moisturizing feeling after rinsing. Therefore, it was confirmed that the cleanser composition of the present invention is suitable for use as a cosmetic.

Claims

1. The composition comprises the following components (A), (B), and / or (C): the weight ratio (A / B) of component (A) to component (B) is 0.01 to 0.80; the weight ratio (C / B) of component (C) to component (B) is 0.01 to 0.32; Cleaning composition: (A) an N-unsaturated acyl acidic amino acid, wherein the unsaturated acyl is a linear acyl having 8 to 20 carbon atoms; (B) N-saturated acyl acidic amino acids, where saturated acyl is a straight-chain acyl having 8 to 14 carbon atoms; and (C) N-saturated acyl acidic amino acid (wherein saturated acyl is a linear acyl having 16 to 20 carbon atoms) (However, the following cleaning compositions (a) to (c) are excluded: (a) A detergent composition containing N-acylglutamic acid sodium salts whose acyl group fatty acid components are lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid, respectively, in which the mass composition ratios of the acyl group fatty acid components are 53 mass%, 23 mass%, 10 mass%, 8 mass%, and 5 mass% for lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid, respectively; (b) detergent compositions containing N-acylglutamic acid sodium salts whose acyl group fatty acid components are lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid, respectively, in which the mass composition ratios of the acyl group fatty acid components are 54 mass%, 23 mass%, 8 mass%, 12 mass%, and 2 mass% for lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid; and (c) A detergent composition containing at least one member selected from the group consisting of coconut oil fatty acid acyl acidic amino acids, palm oil fatty acid acyl acidic amino acids, and palm kernel oil fatty acid acyl acidic amino acids.

2. 2. The detergent composition according to claim 1, wherein component (A) is an N-unsaturated acyl acidic amino acid (wherein the unsaturated acyl is a linear acyl having 16 to 20 carbon atoms).

3. 3. The detergent composition according to claim 2, wherein component (A) is an N-oleoyl acidic amino acid.

4. The cleansing composition according to any one of claims 1 to 3, wherein component (B) comprises one or more amino acids selected from the group consisting of N-capryloyl acidic amino acid, N-caproyl acidic amino acid, N-lauroyl acidic amino acid, and N-myristoyl acidic amino acid.

5. 5. The detergent composition according to claim 4, wherein component (B) comprises an N-lauroyl acidic amino acid and / or an N-myristoyl acidic amino acid.

6. 6. The detergent composition according to claim 1, wherein component (C) comprises an N-palmitoyl acidic amino acid and / or an N-stearoyl acidic amino acid.

7. 7. The detergent composition according to claim 1, wherein the N-unsaturated acyl acidic amino acid is an N-unsaturated acyl glutamic acid, and the N-saturated acyl acidic amino acid is an N-saturated acyl glutamic acid.

8. 8. The cleaning composition according to claim 1, wherein the weight ratio (A / B) of the component (A) to the component (B) is 0.02 to 0.

60.

9. 9. The cleaning composition according to claim 1, wherein the weight ratio (C / B) of the component (C) to the component (B) is 0.01 to 0.

30.

10. 10. The cleaning composition according to claim 1, wherein the content of component (B) is 60% by weight or more of the total content of components (A) to (C).

11. The cleaning composition according to any one of claims 1 to 10, wherein the content of component (C) is 16 wt% or less of the total content of components (A) to (C).

12. The detergent composition according to any one of claims 1 to 11, which does not contain an acylglycine salt and / or a polyhydric alcohol.

13. The detergent composition according to any one of claims 1 to 12, which does not contain collagen.

14. The cleaning composition according to any one of claims 1 to 13, further comprising an imidazole-based amphoteric surfactant.

15. The cleaning composition according to any one of claims 1 to 14, having a pH of 4.0 to 7.

0.

16. The cleaning composition according to claim 15, having a pH of 4.5 to 7.

0.

17. A cosmetic comprising the cleanser composition according to any one of claims 1 to 15.

18. The cosmetic preparation according to claim 17, having a pH of 4.5 to 7.0.

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