Gel cleaning agent and method for producing the same

Abstract

To provide a gel cleaning agent having excellent transparency, hardness, syneresis properties, and usability, as well as a method for producing the gel cleaning agent having excellent production suitability.SOLUTION: Provided is a gel cleaning agent comprising (A) 0.8 mass% to 4.5 mass% of xyloglucan, (B) 7.5 mass% to 22.5 mass% of sodium lauroyl methylalanine, (C) 22.5 mass% to 37.5 mass% of polyhydric alcohol, and (D) 30 mass% to 35 mass% of water; wherein the polyhydric alcohol (C) comprises glycerin, the amount of glycerin in the polyhydric alcohol being 80 mass% or more, and wherein the gel cleaning agent has a hardness at 25°C of 300 or more as measured by a rheometer.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a gel detergent and a method for producing the gel detergent. [Background technology]

[0002] Gel-type detergents have been known for some time (for example, Patent Documents 1 to 5), and in all of these patent documents, a cleaning component is supported on a gel using xyloglucan (tamarind gum).

[0003] Furthermore, Patent Document 6 proposes a gel composition containing 2.0 parts by weight of tamarind gum, 30 parts by weight of glycerin, 25 parts by weight of soap base liquid, 2.0 parts by weight of decyl glucoside, 0.2 parts by weight of etidronic acid, 0.5 parts by weight of phenoxyethanol, 0.01 parts by weight of mannan, 10.0 parts by weight of ethanol, and 30.29 parts by weight of water, and having a pH of less than 10.5 when made into a 1% by weight aqueous solution. Paragraph

[0037] of Patent Document 6 states, "Examples of soap base solutions include 10 to 25 parts by weight of aqueous solution (1) containing 10% by weight of sodium lauroylmethylalanine (for example, manufactured by Kawaken Fine Chemical Co., Ltd., trade name: Alanon ALE, concentration=30% by weight), 35 to 50 parts by weight of aqueous solution (2) containing 15% by weight of potassium soap base (for example, manufactured by Mighty Co., Ltd., concentration=25% by weight), 10 to 30 parts by weight of coconut oil, 5 to 15 parts by weight of potassium hydroxide (48% by weight aqueous solution), 0.01 to 1 part by weight of methylparaben, and 5 to 15 parts by weight of ethanol, heated and stirred at 70°C to 90°C, and finally, the pH is adjusted with 0.01 to 1 part by weight of etidronic acid." [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-116451 [Patent Document 2] Japanese Patent Application Publication No. 2020-100588 [Patent Document 3] Japanese Patent Publication No. 2020-189956 [Patent Document 4] Patent Publication No. 2021-102600 [Patent Document 5] Japanese Patent Publication No. 2018-062525 [Patent Document 6] Japanese Patent Application Laid-Open No. 2016-216664 Summary of the Invention [Problem to be solved by the invention]

[0005] The gel-type cleansers described in Patent Documents 1 to 5 all contain xyloglucan (tamarind gum), but it is difficult to dissolve it uniformly using the conventional compositions and manufacturing methods, and syneresis and foaming properties are reduced, and the cleansers may tear or become soggy during use.

[0006] The above-mentioned Patent Document 6 uses a soap base liquid containing sodium lauroylmethylalanine. It is described that the soap base liquid "contains 10% by weight of sodium lauroylmethylalanine (for example, Kawaken Fine Chemical Co., Ltd., trade name: Alanon ALE, concentration = 30% by weight) in an aqueous solution containing 10% by weight of sodium lauroylmethylalanine (for example, Kawaken Fine Chemical Co., Ltd., trade name: Alanon ALE, concentration = 30% by weight) in total." (See paragraph

[0037] of Patent Document 6.) Since this aqueous solution of sodium lauroylmethylalanine contains 30% by weight of sodium lauroylmethylalanine, the content of sodium lauroylmethylalanine in the aqueous solution of sodium lauroylmethylalanine is calculated to be 0.3 parts by weight to 0.75 parts by weight (0.46% by weight to 0.55% by weight). Furthermore, in Examples 1 to 9 of Patent Document 6, 25 parts by weight of a soap base liquid containing sodium lauroylmethylalanine is blended in each case. Therefore, the content of sodium lauroylmethylalanine in the gel compositions of Examples 1 to 9 of Patent Document 6 is 0.12% by weight to 0.14% by weight, which is extremely small compared to the content of sodium lauroylmethylalanine of the present invention, 7.5% by weight to 22.5% by weight, and a gel detergent having excellent appearance (transparency), hardness, and foaming properties cannot be provided.

[0007] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a gel-type detergent having excellent transparency, hardness, syneresis properties, and usability, and a method for producing a gel-type detergent having excellent production suitability. [Means for solving the problem]

[0008] The gel-like cleanser of the present invention, which is a means for solving the above problems, contains (A) 0.8% to 4.5% by mass of xyloglucan, (B) 7.5% to 22.5% by mass of sodium lauroylmethylalanine, (C) 22.5% to 37.5% by mass of polyhydric alcohol, and (D) 30% to 35% by mass of water, wherein the (C) polyhydric alcohol contains glycerin, the glycerin content in the polyhydric alcohol being 80% by mass or more, and the hardness at 25°C as measured with a rheometer is 300 or more. The gel-like detergent preferably has a pH of 7.5 or less in a 1% by mass aqueous solution. In addition, in the gel-like detergent, the (C) polyhydric alcohol preferably further contains propanediol. The gel detergent preferably contains propanediol in an amount of 3% to 12% by mass. The gel-like detergent is preferably transparent.

[0009] The method for producing a gel-type cleanser of the present invention includes a cooling and solidifying step of cooling and solidifying a composition obtained by dissolving 0.5% by mass to 3% by mass of (A') xyloglucan, 5% by mass to 15% by mass of sodium lauroylmethylalanine, 20% by mass to 40% by mass of (C') a polyhydric alcohol, and 40% by mass to 60% by mass of water (D'), and a maturation step of aging the cooled and solidified gel composition in a constant temperature and humidity chamber for one week or more to volatilize and remove the solvent from the gel composition, wherein the (C') polyhydric alcohol contains glycerin, and the glycerin content of the polyhydric alcohol is 80% by mass or more. In the method for producing a gel detergent, the polyhydric alcohol (C') preferably further contains propanediol. In the method for producing the gel detergent, the propanediol content is preferably 5% by mass to 10% by mass. [Effects of the Invention]

[0010] The present invention aims to provide a gel-type detergent that can solve the above-mentioned problems of the prior art and achieve the above-mentioned object, and that is excellent in transparency, hardness, syneresis properties, and usability, as well as a method for producing a gel-type detergent that is excellent in production suitability. DETAILED DESCRIPTION OF THE INVENTION

[0011] (gel-type cleanser) The gel cleanser of the present invention contains (A) xyloglucan, (B) sodium lauroylmethylalanine, (C) polyhydric alcohol, and (D) water, and may further contain other ingredients as required.

[0012] <(A) Xyloglucan> Xyloglucan is the main component of the seeds of Tamarindus indica, a legume plant that grows mainly in tropical regions. Xyloglucan is a polysaccharide with a molecular weight of several hundred thousand, which has a structure in which xylose is linked by an α-1,6 bond as a side chain to part of the main chain consisting of β-1,4 glucan, and galactose is linked to some of the xylose, as represented by the following general formula (1).

[0013] [ka] In the general formula (1), Glc represents glucose, Xyl represents xylose, Gal represents galactose, and n represents the number of bonds.

[0014] The xyloglucan content is 0.8% to 4.5% by mass, preferably 1% to 4% by mass, and more preferably 1% to 2% by mass, based on the total amount of the gel-type cleanser. If the xyloglucan content is less than 0.8% by mass, the gel-type cleanser becomes soft and has difficulty maintaining its shape. On the other hand, if the xyloglucan content exceeds 4.5% by mass, the viscosity of the composition increases and it may not be possible to dissolve the xyloglucan uniformly.

[0015] As the xyloglucan, for example, commercially available xyloglucan (trade name "Glyloid 6C", manufactured by Dainippon Pharmaceutical Co., Ltd.) can be used. When a commercially available product is to be incorporated into the gel-like cleanser of the present invention, it is preferable to use one that is as purified as possible. The molecular weight of the xyloglucan to be used is not particularly limited.

[0016] The gel-like detergent of the present invention can contain xyloglucan produced by known methods, such as the method described in the product catalog for "Glyloid 6C." Specifically, xyloglucan can be produced by removing foreign matter from tamarind seeds, dissolving the resulting mixture in water, removing impurities to make it transparent, drying the mixture, and then pulverizing it.

[0017] <(B) Sodium Lauroyl Methylalanine> Sodium lauroylmethylalanine can impart excellent appearance (transparency), hardness, and foaming properties to gel cleansing agents. Sodium lauroylmethylalanine is the sodium salt of a condensation product of lauric acid and N-methyl-β-alanine, as shown in the following formula:

[0018] [ka]

[0019] The content of acylalanine sodium is 7.5% to 22.5% by mass, preferably 10% to 20% by mass, and more preferably 10% to 15% by mass, based on the total amount of the gel detergent. If the content of acylalanine sodium is less than 7.5% by mass, cleaning power and foaming may be insufficient. On the other hand, if the content of acylalanine sodium exceeds 22.5% by mass, the gel structure of the gel detergent may collapse, making it impossible to maintain the gel state.

[0020] <(C) Polyhydric alcohol> The polyhydric alcohol contains glycerin, and the glycerin content in the polyhydric alcohol is 80% by mass or more. The polyhydric alcohol preferably further contains propanediol, and the content of propanediol is preferably 5% by mass to 10% by mass. As the polyhydric alcohol, in addition to glycerin and propanediol, for example, diglycerin, xylitol, trehalose, etc. can be used. The content of the polyhydric alcohol is 22.5% by mass to 37.5% by mass, preferably 25% by mass to 35% by mass, and more preferably 25% by mass to 30% by mass, based on the total amount of the gel-type detergent. If the content of the polyhydric alcohol is less than 22.5% by mass, the hardness of the gel-type detergent may be reduced. On the other hand, if the content of the polyhydric alcohol is more than 37.5% by mass, the composition may become thicker, making it difficult to dissolve the polyhydric alcohol uniformly.

[0021] <(D)Water> The water content of the gel cleanser is 30% to 35% by mass. If the water content is less than 30% by mass, the gel cleanser will not dissolve well and will tend to become sticky. If the water content is more than 35% by mass, syneresis will occur and the gel may break or become soggy during use.

[0022] <Other ingredients> The gel cleanser of the present invention may contain other ingredients as long as the purpose and effects of the present invention are not impaired. Other ingredients include, for example, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, moisturizers, water-soluble polymers, thickeners, film-forming agents, UV absorbers, sequestering agents, lower alcohols, oils, sugars, amino acids, organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidant aids, fragrances, colorants, preservatives, disinfectants, etc., which can be appropriately blended as needed to produce a formulation according to the desired dosage form.

[0023] Examples of anionic surfactants include higher alkyl sulfate ester salts (e.g., lauric acid esters). sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfate ester salts (e.g., POE-lauryl triethanolamine sulfate, POE-lauryl sodium sulfate, etc.); N-acyl sarcosinates (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., sodium N-myristoyl-N-methyl taurate, sodium coconut oil fatty acid methyl taurate, sodium lauroyl methyl taurate, etc.); phosphate ester salts (sodium POE-oleyl ether phosphate, POE-stearyl ether phosphate, etc.); sulfosuccinates (e.g., sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc.); alkyl benzene sulfonates (e.g., sodium linear dodecyl benzene sulfonate, sodium linear dodecyl benzene sulfonate, etc.) triethanolamine, sodium linear dodecylbenzenesulfonate, etc.); higher fatty acid ester sulfate salts (e.g., hydrogenated coconut oil fatty acid glycerin sodium sulfate, etc.); N-acyl glutamates (e.g., monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, monosodium N-myristoyl-L-glutamate, etc.); acyl glycine salts such as cocoyl glycine salts and lauroyl glycine salts; sulfated oils (e.g., turmeric oil, etc.); acyl alanine salts such as lauroyl methyl alanine salt; POE-alkyl ether carboxylic acids; POE-alkyl allyl ether carboxylate salts; α-olefin sulfonates; higher fatty acid ester sulfonates; secondary alcohol sulfate salts; higher fatty acid alkylolamide sulfate salts; sodium lauroyl monoethanolamide succinate; N-palmitoyl aspartic acid ditriethanolamine; sodium caseinate, etc.

[0024] Examples of cationic surfactants include alkyltrimethylammonium salts (e.g., stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, etc.); alkylpyridinium salts (e.g., cetylpyridinium chloride, etc.); distearyldimethylammonium chloride, dialkyldimethylammonium salts; poly(N,N'-dimethyl-3,5-methylenepiperidinium chloride); alkyl quaternary ammonium salts; alkyldimethylbenzylammonium salts; alkylisoquinolinium salts; dialkylmorphonium salts; POE-alkylamines; alkylamine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; benzethonium chloride, etc.

[0025] Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, etc.); betaine-based surfactants (e.g., lauryldimethylaminoacetic acid betaine, alkyl betaine, alkylamido betaine, alkyl sulfobetaine, etc.).

[0026] Examples of lipophilic nonionic surfactants include sorbitan fatty acid esters (e.g., sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate, etc.); glycerin polyglycerin fatty acids (e.g., glycerin monocottonseed oil fatty acid, glycerin monoerucate, glycerin sesquioleate, glycerin monostearate, glycerin α,α'-oleic acid pyroglutamate, glycerin monostearate malate, etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); hydrogenated castor oil derivatives; and glycerin alkyl ethers.

[0027] Examples of hydrophilic nonionic surfactants include POE-sorbitan fatty acid esters (e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE-sorbitol fatty acid esters (e.g., POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, etc.); POE-glycerin fatty acid esters (e.g., POE-glycerin monostearate, POE-monooleates such as POE-glycerol monoisostearate, POE-glycerol triisostearate, etc.; POE-fatty acid esters (e.g., POE-distearate, POE-monodioleate, ethylene glycol distearate, etc.); POE-alkyl ethers (e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); Pluronic (registered trademark) products; POE·POP- Alkyl ethers (e.g., POE·POP-cetyl ether, POE·POP-2-decyltetradecyl ether, POE·POP-monobutyl ether, POE·POP-hydrogenated lanolin, POE·POP-glycerin ether, etc.); tetraPOE·tetraPOP-ethylenediamine condensates (e.g., Tetronic, etc.); POE-hydrogenated castor oil derivatives (e.g., POE-castor oil, POE-hydrogenated castor oil, POE-hydrogenated castor oil monoisostearate, POE-hydrogenated castor oil triisostearate, POE-hydrogenated castor oil monopyrogulant, etc.) POE-hydrogenated castor oil with maleic acid, etc.); POE-beeswax and lanolin derivatives (e.g., POE-sorbitol beeswax, etc.); alkanolamides (e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, cocamide methyl monoethanolamide, etc.); POE-propylene glycol fatty acid esters; POE-alkylamines; POE-fatty acid amides; diethylene glycol laurate; sucrose fatty acid esters; alkylethoxydimethylamine oxide;Trioleyl phosphate, etc.;

[0028] Examples of moisturizing agents include polyethylene glycol, propylene glycol, dipropylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, alkylene oxide derivatives, short-chain soluble collagen, diglycerin (EO)PO adduct, Rosa illustrator extract, yarrow extract, and melilot extract.

[0029] Examples of natural water-soluble polymers include plant-derived polymers (e.g., gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (marmella), algae colloid (cassow extract), starch (rice, corn, potato, wheat), glycyrrhizic acid); microbial-derived polymers (e.g., xanthan gum, dextran, succinoglucan, pullulan, etc.); and animal-derived polymers (e.g., collagen, casein, albumin, gelatin, etc.).

[0030] Examples of semi-synthetic water-soluble polymers include starch-based polymers (e.g., carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose-based polymers (methyl cellulose, ethyl cellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc.); and alginic acid-based polymers (e.g., sodium alginate, propylene glycol alginate, etc.).

[0031] Examples of synthetic water-soluble polymers include vinyl polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene polymers (e.g., polyethylene glycol 20,000, 40,000, 60,0000 polyoxyethylene polypropylene copolymers, highly polymerized polyethylene glycol, etc.); acrylic polymers (e.g., sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; cationic polymers, etc.

[0032] Examples of thickeners include gum arabic, carrageenan, karaya gum, tragacanth gum, carob gum, quince seed, casein, dextrin, gelatin, sodium pectinate, sodium allaginate, methylcellulose, ethylcellulose, CMC, hydroxyethyl cellulose, hydroxypropyl cellulose, PVA, PVM, PVP, sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, dialkyldimethylammonium cellulose sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, magnesium aluminum silicate (Bee Gum), laponite, and anhydrous silicic acid.

[0033] Examples of ultraviolet absorbers include benzoic acid-based ultraviolet absorbers (e.g., para-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N,N-dimethyl PABA butyl ester, N,N-dimethyl PABA ethyl ester, etc.); anthranilic acid-based ultraviolet absorbers (e.g., homomenthyl-N-acetylanthranilate, etc.); salicylic acid-based ultraviolet absorbers (e.g., amyl salicylate, , menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate, etc.); cinnamic acid-based ultraviolet absorbers (e.g., octyl methoxycinnamate, ethyl-4-isopropyl cinnamate, methyl-2,5-diisopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, isoamyl-p-methoxycinnamate, ethoxycinnamate, octyl-p-methoxycinnamate (2-ethylhexyl-p-methoxycinnamate), 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-di-paramethoxycinnamate, etc.; benzophenone-based ultraviolet absorbers (e.g., 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, etc.); benzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.);3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor; 2-phenyl-5-methylbenzoxazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole; 2-(2'-hydroxy-5'-methylphenylbenzotriazole; dibenzalazine; dianisoylmethane; 4-methoxy-4'-t-butyldibenzoylmethane; 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one, dimorpholinopyridazino; 2-ethylhexyl-2-cyano-3,3-diphenylacrylate; 2,4-bis-{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-(1,3,5)-triazine, and the like.

[0034] Examples of sequestering agents include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, edetate disodium, edetate trisodium, edetate tetrasodium, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, and ethylenediaminehydroxyethyltriacetate trisodium salt.

[0035] Examples of lower alcohols include ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol.

[0036] Examples of monosaccharides include trioses (e.g., D-glyceryl aldehyde, dihydroxyacetone, etc.); tetraoses (e.g., D-erythrose, D-erythrulose, D-threose, erythritol, etc.); pentoses (e.g., L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc.); hexoses (e.g., D-glucose, D-talose, D-busicose, D-galactose, D-fructose, L-galactose, L- mannose, D-tagatose, etc.); heptoses (e.g., aldoheptose, heptose, etc.); octooses (e.g., octulose, etc.); deoxysugars (e.g., 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L-mannose, etc.); aminosugars (e.g., D-glucosamine, D-galactosamine, sialic acid, aminouronic acid, muramic acid, etc.); uronic acids (e.g., D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D-galacturonic acid, L-iduronic acid, etc.).

[0037] Examples of oligosaccharides include sucrose, guanthianose, umbelliferose, lactose, planteose, isolychnoses, α,α-trehalose, raffinose, lychnoses, umbilicin, stachyose, and verbascoses.

[0038] Examples of polysaccharides include cellulose, quince seed, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, gum arabic, heparan sulfate, hyaluronic acid, tragacanth gum, keratan sulfate, chondroitin, mucoitin sulfate, guar gum, dextran, keratosulfate, locust bean gum, succinoglucan, and caronic acid.

[0039] Examples of amino acids include neutral amino acids (e.g., threonine, cysteine, etc.), basic amino acids (e.g., hydroxylysine, etc.), etc. Examples of amino acid derivatives include sodium acyl sarcosine (sodium lauroyl sarcosine), acyl glutamate, sodium acyl β-alanine, glutathione, pyrrolidone carboxylic acid, etc.

[0040] Examples of organic amines include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol. Examples of polymer emulsions include acrylic resin emulsion, polyethyl acrylate emulsion, acrylic resin liquid, polyacrylic alkyl ester emulsion, polyvinyl acetate resin emulsion, and natural rubber latex.

[0041] Examples of pH adjusters include buffers such as citric acid, lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate. Examples of vitamins include vitamins A, B1, B2, B6, C, E or derivatives thereof, pantothenic acid or derivatives thereof, and biotin.

[0042] Examples of antioxidants include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, and gallic acid esters.

[0043] Examples of antioxidant aids include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

[0044] Other ingredients that can be added include, for example, preservatives (e.g., ethylparaben, butylparaben, chlorphenesin, phenoxyethanol, etc.); disinfectants (e.g., isopropylmethylphenol, benzalkonium chloride, benzethonium chloride, chlorhexidine gluconate, etc.); anti-inflammatory agents (e.g., glycyrrhizinic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (e.g., placenta extract, saxifrage extract, arbutin, etc.); Seed extracts (e.g., Phellodendron bark, Coptis chinensis, Lithospermum root, Peony, Swertia japonica, Birch, Sage, Loquat, Carrot, Aloe, Mallow, Iris, Grape, Job's tears, Luffa, Lily, Saffron, Cnidium rhizome, Angelica acutiloba, St. John's wort, Ononis, Garlic, Chili pepper, Citrus fruit, Angelica acutiloba, Seaweed, etc.), activators (e.g., Royal jelly, photosensitizers, cholesterol derivatives, etc.); Blood circulation promoters (e.g., Nonyl acid valenylamide, nicotinic acid benzyl ester, nicotinic acid β-butoxy ethyl ester, capsaicin, zingerone, cantharides tincture, ichthammol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthine, γ-oryzanol, etc.); anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.); edetate disodium, edetate trisodium, sodium citrate, sodium polyphosphate, methaline Examples of suitable skin whitening agents include sequestering agents such as sodium ascorbate, gluconic acid, and malic acid; caffeine, tannin, verapamil, tranexamic acid or its derivatives, and various herbal extracts such as licorice, Chinese quince, and Japanese anemone; pharmaceutical agents such as tocopherol acetate; whitening agents such as vitamin C, magnesium ascorbyl phosphate, ascorbyl glucoside, arbutin, and kojic acid; amino acids or derivatives thereof such as arginine and lysine; and sugars such as fructose, mannose, erythritol, trehalose, and xylitol.

[0045] The hardness of the gel detergent of the present invention, as measured with a rheometer, at 25°C is 300 or more, preferably 300 or more and 600 or less, and more preferably 300 or more and 500 or less. If the hardness is 300 or more as measured with a rheometer at 25°C, the gel detergent has sufficient hardness. The hardness at 25°C measured with a rheometer can be measured, for example, using a rheometer equipped with a needle having a diameter of 2 mm under conditions of a penetration speed of 2 cm / min and a penetration distance of 10 mm at 25°C.

[0046] From the viewpoints of skin irritation and foaming properties, the gel cleanser of the present invention preferably has a pH of 7.5 or less, more preferably 6.0 to 7.5, in a 1% by mass aqueous solution. The pH of a 1% by mass aqueous solution is the pH value measured with a pH meter for a 1% by mass aqueous solution prepared by dissolving gel-type detergent in water at a ratio of 1:99. The gel detergent of the present invention is preferably transparent. The appearance (transparency) of the gel detergent can be evaluated by visual observation.

[0047] (Method of manufacturing gel-type detergent) The method for producing a gel cleanser of the present invention includes a cooling and solidifying step of cooling and solidifying a composition obtained by dissolving 0.5% by mass to 3% by mass of (A') xyloglucan, 5% by mass to 15% by mass of (B') sodium lauroylmethylalanine, 20% by mass to 40% by mass of (C') polyhydric alcohol, and 40% by mass to 60% by mass of (D') water, and an aging step of aging the gel composition after cooling and solidifying for one week or more in a constant temperature and humidity chamber to volatilize and remove the solvent from the gel composition, and may further include other steps as necessary.

[0048] The method for producing a gel-type detergent of the present invention has the advantage that it can uniformly dissolve ingredients that are difficult to incorporate using conventional methods because they contain large amounts of solvents such as water and polyhydric alcohols during production, and that the aging process allows the water and other solvents to evaporate appropriately, resulting in a gel-type detergent that is high in hardness, resistant to syneresis, and has excellent transparency and usability.

[0049] The amount of xyloglucan blended during production is preferably 0.5% to 3% by mass, since it forms a gel, and more preferably 1% to 2% by mass. A xyloglucan blended amount of less than 0.5% by mass may be undesirable because the cleanser does not gel. On the other hand, a xyloglucan blended amount of more than 3% by mass may be undesirable because the solubility of the gel cleanser decreases.

[0050] The amount of acylalanine sodium blended during production is preferably 5% to 15% by mass in the composition. If the amount of acylalanine sodium blended is less than 5% by mass, it may be undesirable due to poor cleaning properties. On the other hand, if the amount of acylalanine sodium blended exceeds 15% by mass, it may be undesirable from the viewpoints of compatibility with other components and manufacturability.

[0051] The (C') polyhydric alcohol contains glycerin, and the glycerin content in the polyhydric alcohol is 80 mass % or more. Since 40% by mass or more of a solvent (water) is required during production, the total amount of glycerin and propanediol is preferably 20% by mass to 40% by mass in the composition from the viewpoint of manufacturability.

[0052] The amount of water blended during production is 40% to 60% by mass of the composition. The water evaporates during the aging step, and the total amount of water after aging is preferably 30% to 35% by mass of the composition.

[0053] The method for producing the gel-like detergent of the present invention utilizes a framing process in which various components are homogeneously dissolved in a solvent such as water or alcohol, cooled to solidify, and then aged to volatilize the water or other solvent. Specifically, water, polyhydric alcohols, and other ingredients are charged into a production kettle and heated to dissolve. Xyloglucan is then added and stirred to dissolve. Next, surfactants and other ingredients are added, mixed homogeneously, and cooled. Since a relatively large amount of solvent (water) is used in the charged components, the mixture is then cooled and placed in a constant temperature and humidity chamber for at least one week, preferably one week to three months, and more preferably one month to three months, in a so-called aging step in which the solvent is evaporated and removed.

[0054] The method for producing a gel detergent of the present invention has the advantage that, by subjecting an unaged gel composition to a step of aging, a gel detergent having higher hardness and less susceptible to syneresis can be obtained. [Example]

[0055] Examples of the present invention will be described below, but the present invention is not limited to these examples in any way.

[0056] In the following examples, the method for calculating the mass of each component after aging was to first measure the total weight of the composition after aging, and since the components other than water, which is a volatile solvent, are not volatile or have extremely low volatility, the weight loss due to aging was considered to be the volatile content of water and calculated.In the following examples, evaluations were performed using the following methods.

[0057] (1) Appearance (transparency) The appearance (transparency) of the gel composition 24 hours after preparation before the aging step and the gel-like detergent after the aging step was visually observed at room temperature (25°C) and evaluated according to the following evaluation criteria. [Evaluation criteria] 〇:Transparent 〇△: Slightly cloudy △: Translucent ×: Opaque -: Liquefaction

[0058] (2)Hardness The hardness of the gel composition 24 hours after preparation before the aging process and the gel-like detergent after the aging process was measured using a rheometer (CR-100, manufactured by Sun Scientific Co., Ltd.) equipped with a needle with a diameter of 2 mm at 25°C, a penetration speed of 2 cm / min, and a penetration distance of 10 mm. [Evaluation criteria for hardness of gel composition before aging process] 〇:50 or more and 150 or less ○△: 10 or more and less than 50 △: 1 or more but less than 10 ×:0 [Evaluation criteria for gel-type detergent hardness at the end of the aging process] 〇: 300 or more ○△: 100 or more and less than 300 △: 1 or more and less than 100 ×:0

[0059] (3) Foaming property 400 ml of a 2% by mass aqueous solution of the gel detergent was stirred at 25°C at a maximum stirring speed of 4,300 rpm for 1 minute, after which the liquid volume (ml) was determined and foaming ability was evaluated according to the following evaluation criteria. [Evaluation criteria] 〇: More than 2,000ml 〇△: 1,500ml or more and 2,000ml or less △: 1,000ml or more but less than 1,500ml ×: Less than 1,000ml

[0060] (4) Syneresis The gel-like detergent was cut into cubic test pieces with sides of approximately 2 cm, and the test pieces were sealed in screw tubes and left to stand in an incubator at 25°C for one week. The test pieces were then removed and the syneresis rate was calculated from the change in weight before and after leaving the test piece for one week, and the syneresis was evaluated based on the following evaluation criteria. [Evaluation criteria] ◎: 0.1% or less 〇: More than 0.1% but less than 1% 〇△: More than 1% but less than 5% △: More than 5% but less than 10% ×: More than 10%

[0061] (5) Manufacturing suitability (viscosity) The gel-type detergents were evaluated for manufacturability (viscosity) during production according to the following evaluation criteria. [Evaluation criteria] 〇: No problem 〇△: Slightly thickened △: thickened ×: Not manufactured

[0062] (6) Usability The gel-type cleanser was applied to both hands by wetting them with 40°C warm water, swirling them around in the palms of both hands 10 times, and then lathering and using the product. The product was checked for tearing, soggyness, dissolving, stickiness, etc. during use, and its usability was evaluated based on the following evaluation criteria. [Evaluation criteria] 〇: No problem △: Slightly problematic (slightly torn, slightly soggy, little melting, slightly sticky) ×: Problematic (tears, soggy, little melting, sticky)

[0063] (Test Examples 1-1 to 1-10) A gel composition and a gel-like detergent using xyloglucan (tamarind gum) before the aging process were produced, and an anionic surfactant suitable for transparency, foaming properties, and hardness was investigated. The compositions shown in Tables 1-1 and 1-2 were prepared by adding water, polyhydric alcohols, etc. to a manufacturing kettle, dissolving them by heating, then adding xyloglucan and stirring to dissolve. Thereafter, surfactants and other ingredients were added, mixed uniformly, and cooled (cooling and solidification step). Since a relatively large amount of water was used as a solvent in the charged components, after cooling, the solvent was volatilized and removed for a maturing period of 1 to 2 months in a constant temperature and humidity chamber (maturing step) to obtain a gel-like detergent. Next, the appearance (transparency), hardness, and foamability were evaluated before and after the aging process. The results are shown in Tables 1-1 and 1-2.

[0064] [Table 1-1]

[0065] [Table 1-2]

[0066] From Tables 1-1 and 1-2, it can be seen that among various anionic surfactants, sodium lauroylmethylalanine (Test Example 1-4) was excellent. Test Examples 1-2, 1-9, and 1-10 (containing sodium cocoyl methyl taurate, potassium cocoyl glycine, and sodium cocoyl glycine, respectively), which showed good results in appearance (transparency) and foaming properties at the time of production, tended to become cloudy after aging. Furthermore, sodium lauryl glycol carboxylate (Test Example 1-1) had no problem with transparency, but did not provide sufficient hardness during production or after aging. From the above, it is considered that sodium lauroylmethylalanine is suitable from the viewpoints of appearance (transparency), hardness, and foaming properties.

[0067] (Test Examples 2-1 to 2-27) The gelation using tamarind gum has different effects on manufacturing suitability (viscosity), hardness, syneresis, and appearance (transparency) depending on the humectant used, so we investigated humectants such as polyhydric alcohols. The compositions of Tables 2-1 to 2-5 were prepared by adding water, polyhydric alcohols, etc. to a production kettle and dissolving them by heating, then adding xyloglucan and stirring to dissolve. Thereafter, surfactants, etc. were added, mixed uniformly, and cooled (cooling and solidification step). Since a relatively large amount of water was used as a solvent in the charged components, after cooling, the solvent was volatilized and removed for a maturing period of 1 to 2 months in a constant temperature and humidity chamber (maturing step) to obtain a gel-like detergent. Next, the appearance (transparency), hardness, manufacturability (viscosity), and syneresis were evaluated before and after the aging process. The results are shown in Tables 2-1 to 2-5.

[0068] [Table 2-1]

[0069] [Table 2-2]

[0070] [Table 2-3]

[0071] [Table 2-4]

[0072] [Table 2-5]

[0073] From Tables 2-1 to 2-5, it can be seen that in Test Examples 2-1 to 2-9, which used 1,3-butylene glycol, propylene glycol, and propanediol, solidification occurred at a blending amount of about 10 mass %, and the hardness tended to increase as the blending amount increased. On the other hand, the appearance is translucent to opaque, and syneresis is also observed (it was found that among the above three raw materials, propanediol tends to have good transparency and syneresis). Test Examples 2-10 to 2-27, which used glycerin, diglycerin, trehalose, xylitol, sorbitol, and sucrose, required 20% by mass for solidification (30% by mass or more of sucrose), and tended to have lower hardness compared to 1,3-butylene glycol, propylene glycol, and propanediol, but had little syneresis and good transparency. Among these, Test Examples 2-11 to 2-12, which contained 20% by mass or more of glycerin, were good in terms of hardness, syneresis, and appearance.

[0074] (Test Examples 3-1 to 3-6) The optimum blending amounts of glycerin and propanediol and the blending ratio (ratio) of the two were investigated. The compositions of Tables 3-1 and 3-2 were charged into a manufacturing kettle along with water, polyhydric alcohols, etc., and dissolved by heating. Xyloglucan was then added and stirred to dissolve. Thereafter, a surfactant, etc. was added, mixed uniformly, and cooled (cooling and solidification step). Since a relatively large amount of water was used as a solvent in the charged components, after cooling, the solvent was volatilized and removed for a maturing period of 1 to 2 months in a constant temperature and humidity chamber (maturing step) to obtain a gel-like detergent. Next, the appearance (transparency), hardness, manufacturability, and syneresis were evaluated before and after the aging process, and the total amount of glycerin and propanediol and the percentage of glycerin were calculated. The results are shown in Tables 3-1 and 3-2.

[0075] [Table 3-1]

[0076] [Table 3-2]

[0077] From Tables 3-1 and 3-2, it can be seen that Test Example 3-2 requires 40% by mass or more of a solvent (water) during production because blending 50% by mass of glycerin increases viscosity and makes production difficult. From the above, it is considered that a suitable range for glycerin is 20% by mass to 40% by mass from the viewpoint of manufacturability. In Test Examples 3-3 to 3-6, an increase in hardness was confirmed by blending propanediol, but in Test Example 3-3, when propanediol was blended in an amount of 10 mass % or more, the appearance tended to become opaque, similar to when propanediol was blended alone. Based on the above, in order to obtain a transparent gel-type cleanser agent with a desired hardness by blending glycerin and propanediol, it is preferable that the mass of glycerin based on the total amount of glycerin and propanediol be 80 mass% or more.

[0078] Next, we investigated the optimum water content for the gel-type detergent after the aging process. The results are shown in Table 4. In addition, (Aging 1) to (Aging 5) in Test Example 3-4 in Table 4 indicate different aging periods (the aging periods were 1 week to 3 months, and the aging periods differed by at least 1 day between each aging step of (Aging 1) to (Aging 5)), and the aging times were in the order of (Aging 1)<(Aging 2)<(Aging 3)<(Aging 4)<(Aging 5).

[0079] [Table 4]

[0080] It was confirmed from Table 4 that the aging process increased hardness and decreased syneresis. Furthermore, in Test Example 3-4 (Aging 1), which was aged until the moisture content reached 40% by mass or more, tearing and soggy conditions were observed upon use, and slight syneresis was also observed. Furthermore, Test Example 3-4 (Aging 4) to Test Example 3-4 (Aging 5), which were aged until the moisture content was 25% by mass or less, showed little loss in dissolution and were confirmed to be sticky. Furthermore, Test Example 3-4 (Aging 2) to Test Example 3-4 (Aging 3), which were aged until the moisture content reached 30% by mass to 35% by mass, were excellent in appearance (transparency), hardness, syneresis, and usability. From the above, it was found that in order to produce a gel-type cleanser that does not tear, become soggy, or sticky during use, and that dissolves moderately and does not synerase, it is best to mature the composition until the water content is 30% to 35% by mass.

[0081] (Test Examples 4-1 to 4-2) Next, we investigated the necessity of the aging process. Test Examples 4-1 and 4-2 were prepared by heating and dissolving the components with the same amounts as those of Test Examples 3-4 (Aging 2) and (Aging 3), which were particularly excellent in appearance (transparency), hardness, syneresis, and usability from Table 4, and then cooling them without carrying out the aging step. The results are shown in Table 5.

[0082] [Table 5]

[0083] As shown in Table 5, in Test Examples 4-1 and 4-2, gel-type detergents were prepared using the same compositions (same compositions after the aging process) as in Test Examples 3-4 (Aging 2) and 3-4 (Aging 3), respectively, by heating and stirring to dissolve the components, followed by cooling and attempting to prepare gel-type detergents without carrying out the aging process. However, in both Test Examples 4-1 and 4-2, the water content was too low and the viscosity was too high, making it impossible to prepare gel-type detergents (all evaluation items were unmeasurable). Furthermore, as mentioned above, from the viewpoint of manufacturability, the amount of water blended during production is preferably 40% to 60% by mass of the composition.

[0084] From the above, it has been found that according to the gel detergent and manufacturing method of the gel detergent of the present invention, the amount of water blended during manufacturing is 40% to 60% by mass of the composition, and by heating each component, stirring and dissolving it, cooling, and then carrying out an aging process, a gel detergent with excellent appearance (transparency), hardness, syneresis properties, and usability can be obtained.

Claims

1. (A) 0.8% by mass to 4.5% by mass of xyloglucan; (B) 7.5% by mass to 22.5% by mass of sodium lauroylmethylalanine; (C) 22.5% by mass to 37.5% by mass of a polyhydric alcohol; (D) 30% by mass to 35% by mass of water; Contains the (C) polyhydric alcohol contains glycerin, and the content of glycerin in the polyhydric alcohol is 80 mass% or more, A gel-like detergent characterized by having a hardness of 300 or more at 25°C as measured by a rheometer.

2. The gel-type detergent according to claim 1 , wherein a pH of a 1% by mass aqueous solution of the gel-type detergent is 7.5 or less.

3. 3. The gel-like cleanser according to claim 1, wherein the polyhydric alcohol (C) further comprises propanediol.

4. 4. The gel-like detergent according to claim 3, wherein the propanediol content is 3% by mass to 12% by mass.

5. 3. The gel-like cleanser according to claim 1, which is transparent.

6. a cooling and solidifying step of cooling and solidifying a composition obtained by dissolving 0.5% by mass to 3% by mass of (A') xyloglucan, 5% by mass to 15% by mass of (B') sodium lauroylmethylalanine, 20% by mass to 40% by mass of (C') polyhydric alcohol, and 40% by mass to 60% by mass of (D') water; and an aging step of aging the cooled and solidified gel composition in a temperature and humidity controlled room for one week or more to volatilize and remove the solvent from the gel composition, The method for producing a gel-like detergent, wherein the polyhydric alcohol (C') contains glycerin, and the glycerin content in the polyhydric alcohol is 80 mass % or more.

7. The method for producing a gel-like detergent according to claim 6, wherein the polyhydric alcohol (C') further contains propanediol.

8. The method for producing a gel-like detergent according to claim 7, wherein the propanediol content is 5% by mass to 10% by mass.

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