TWI786123B - liquid skin cleanser - Google Patents

Abstract

The liquid skin cleanser of the present invention contains the following components (A), (B), (C), (D), (E) and (F): (A) fatty acid salt: 5-18% by mass; (B) Anionic surfactant other than component (A): 2.2 to 7% by mass; (C) Amphoteric surfactant: 0.2 to 4% by mass; (D) Carbonate: 0.2 to 7% by mass; (E) Multicomponent Alcohol: 0.1-10% by mass; (F) water, the mass ratio (B)/(C) of component (B) to component (C) is 5/3-10.

Description

liquid skin cleanser

This invention relates to liquid skin cleansers.

Compared with solid soap, liquid skin cleansers have better dissolution and collapsibility, better foaming, and can easily cleanse the skin, so they have been widely used in recent years (for example, Patent Document 1).

However, conventional liquid skin cleansers have the problem of excessive extrusion from the container or excessive use, and consumers also demand higher cleansing properties. Therefore, the applicant of this case developed a product that can be easily taken out from the container in an appropriate amount, easy to dissolve and collapse, A liquid skin cleanser that has excellent cleansing power and provides a refreshing feeling (Patent Document 2).

(Patent Document 1) Japanese Patent Application Publication No. 2009-529588

(Patent Document 2) International Publication No. 2013/204092

The liquid skin cleanser related to the present invention contains the following components (A), (B), (C), (D), (E) and (F): (A) Fatty acid salt: 5~18% by mass , (B) Anionic surfactant other than component (A): 2.2 to 7% by mass, (C) Amphoteric surfactant: 0.2 to 4% by mass, (D) Carbonate: 0.2 to 7% by mass, (E) Polyol: 0.1-10% by mass, (F) water, and the mass ratio (B)/(C) of component (B) to component (C) is 5/3-10.

Conventional skin cleansers are from the point of view of improving the smoothness of the skin after cleansing. When more anionic surfactants other than fatty acid salts are mixed, it is found that when water is added, there is a tendency to increase viscosity, resulting in rinsing with water. The fusion of the product is obviously reduced, and there is residual rinsing that is easy to stick and sticky, and rinsing is time-consuming.

The reason is that the present inventors use fatty acid salts, other anionic surfactants, amphoteric surfactants, carbonates, and polyhydric alcohols in combination in a specific ratio to improve the smoothness of the skin after cleaning, and improve the preparation and A liquid skin cleanser that has solved the above-mentioned problems has been obtained through the fusion of water and water.

The liquid skin cleanser of the present invention suppresses viscosification even if water is added, and has good hydration, so there is no rinsing residue during rinsing, and it is not sticky and can quickly complete rinsing. Also, the foaming and cleansing power is good, and the skin after cleansing is smooth.

The fatty acid salt of component (A) is preferably represented by the general formula (1): [Chemical 1] R ¹ -COOX‧‧‧(1)

(In the formula, R represents ^a linear or branched alkyl or alkenyl group with 9 to 21 carbons; X represents an alkali metal, ammonium, ammonium derived from an alkanolamine, or a basic amino acid).

More systematic examples include salts of lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid, and behenic acid. Among them, from the viewpoint of improving detergency and foaming, it is preferable to contain at least one kind selected from salts of lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid, and more preferably Contains at least one selected from lauric acid, myristic acid, and palmitic acid.

Such salts include, for example, alkali metals such as sodium and potassium; ammonium; ammonium derived from alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine; and basic amino acids such as arginine and lysine. Among these, it is preferable to contain at least one kind selected from sodium, potassium, ammonium, and arginine, and it is more preferable to contain potassium, arginine, and Choose at least one of them, and the best ones contain at least potassium.

The fatty acid salt of the component (A) can be present in the composition, for example, by mixing unneutralized fatty acid and a neutralizing agent in the composition to form a fatty acid salt.

The neutralizing agent is a basic compound, such as sodium hydroxide, potassium hydroxide, triethanolamine, basic amino acid, etc. Among these, it is preferable to contain at least one selected from potassium hydroxide and sodium hydroxide, and it is more preferable to contain at least potassium hydroxide from the viewpoint of improving the detergency and the degree of water fusion.

The fatty acid salt of component (A) can be used in combination of 1 or 2 or more types. From the viewpoint of suppressing the increase in viscosity when adding water, improving foaming, good water fusion, and skin smoothness, the content depends on the fatty acid In terms of converted value, in the liquid skin cleanser, it is preferably at least 5% by mass, more preferably at least 6.5% by mass, most preferably at least 8% by mass, most preferably at least 10% by mass, and more preferably at least 18% by mass Less than or less than 16% by mass of the better, less than 15% by mass of the best, or less than 12% by mass of the best. In addition, the content of component (A) in terms of fatty acid is 5 to 18% by mass in the liquid skin cleanser, preferably 6.5 to 16% by mass, particularly good to 8 to 15% by mass, and best to be 10 to 10% by mass. 12% by mass.

The anionic surfactants of component (B) other than component (A) may be used as long as they are commonly used in skin cleansers, for example: alkylbenzenesulfonate, alkanesulfonate, alkenylsulfonic acid Salt, Alkyl Sulfonate, Acyl-2-Isethionate, Alkyl Sulfate, Alkyl Ether Sulfate, Alkyl Sulfosuccinate, Sulfonate Fatty Acid Methyl Ester Salt, Fatty Acid Alkanolamide Amine sulfate ester salt, monoacyl glycerol sulfate ester salt, alkyl phosphate ester salt, polyoxyethylene alkyl ether phosphate salt, alkyl aryl ether phosphate salt, fatty acid amido ether phosphoric acid, ether carboxylic acid or its salt, N- Acyl amino acid salt, etc.

Among them, from the viewpoint of improving foaming, cleansing power, and skin smoothness, it is preferable to contain alkyl sulfate ester salts, alkyl ether sulfate ester salts, and ether carboxylic acids or salts thereof. At least one is selected, more preferably at least two are contained, and most preferably at least an alkyl sulfate and/or an alkyl ether sulfate, and an ether carboxylate are included.

Alkyl sulfate ester salts that can be used as component (B) include, for example, alkyl sulfate ester salts represented by the following general formula (2): R ² OSO ₃ M ² ‧‧‧(2)

(In the formula (2), R ² represents an aliphatic hydrocarbon group with 8 to 22 carbon atoms; M ² represents an aliphatic hydrocarbon group obtained from alkali metals, alkaline earth metals, ammonium, alkyl ammonium, alkanolammonium, and glucoammonium (glucammonium) selected cations)

In the general formula ( ² ), R2 is from the viewpoint of making foaming and good detergency, preferably an aliphatic hydrocarbon group with 8 to 18 carbons, more preferably an aliphatic hydrocarbon group with 8 to 16 carbons, Especially preferred is an aliphatic hydrocarbon group with 10-16 carbon atoms. Also, it is preferably an alkyl or alkenyl group having 8 to 16 carbons, more preferably an alkyl or alkenyl group having 10 to 16 carbons, and particularly preferably an alkyl or alkenyl group having 10 to 14 carbons.

From the same viewpoint as above, ^M2 is preferably an alkali metal or ammonium, more preferably an alkali metal, and particularly preferably a sodium salt.

Specific examples of the alkyl sulfate salts include: sodium lauryl sulfate, triethanolamine lauryl sulfate, ammonium lauryl sulfate, sodium myristyl sulfate, sodium cetyl sulfate, sodium stearyl sulfate, sodium oleyl sulfate , Triethanolamine oleyl sulfate, etc. Among them, it is preferable to contain one or more kinds selected from sodium lauryl sulfate, triethanolamine lauryl sulfate, and ammonium lauryl sulfate. These compounds may be used alone or in combination of two or more.

Furthermore, the commercially available products of this alkyl sulfate ester salt include, for example: EMAL OS (manufactured by Kao Corporation, sodium lauryl sulfate), EMAL 10PT (manufactured by Kao Corporation, sodium lauryl sulfate), EMAL TD (manufactured by Kao Corporation, , triethanolamine lauryl sulfate), EMAL AD-25R (manufactured by Kao Corporation, ammonium lauryl sulfate), and the like.

Alkyl ether sulfates that can be used as component (B) include, for example, alkyl ether sulfates represented by the following general formula (3): R ³ O(CH ₂ CH ₂ O) _n SO ₃ M ³ ‧‧ ‧(3)

(In the formula (3), R ³ represents an aliphatic hydrocarbon group with 8 to 22 carbons; M ³ represents a group selected from alkali metals, alkaline earth metals, ammonium, alkyl ammonium, alkanolammonium, and ammonium glucose Cation; n series means the average addition mole number, 0.5~20)

In the general formula (3), ^R3 is from the viewpoint of making foaming and good detergency, preferably an aliphatic hydrocarbon group with 8 to 18 carbons, more preferably an aliphatic hydrocarbon group with 8 to 16 carbons, Especially preferred is an aliphatic hydrocarbon group with 10-16 carbon atoms. Also, it is preferably an alkyl or alkenyl group having 8 to 16 carbons, more preferably an alkyl or alkenyl group having 10 to 16 carbons, and particularly preferably an alkyl or alkenyl group having 10 to 14 carbons.

From the same viewpoint as above, n is preferably at least 0.5, more preferably at most 12, more preferably at most 5, most preferably at most 4, and most preferably at most 2. The specific range of n is preferably 0.5~12, more preferably 0.5~5, particularly good 0.5~4, and most optimally 0.5~2.

From the same viewpoint as above, ^M is preferably an alkali metal or ammonium, more preferably an alkali metal, and particularly preferably a sodium salt.

The alkyl ether sulfate system can be, for example, selected from polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (1) ammonium lauryl ether sulfate, polyoxyethylene (1) sodium myristate sulfate, polyoxyethylene (2) Sodium lauryl ether sulfate and polyoxyethylene (2) Sodium myristyl ether sulfate are selected from 1 type or 2 or more types. Among them, it is preferable to contain one or more kinds selected from polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (1) ammonium lauryl ether sulfate, and polyoxyethylene (2) sodium lauryl ether sulfate. In addition, in this specification, the numerical value in parentheses of these compounds means the average addition mole number of ethylene oxide.

Furthermore, examples of commercially available products of the alkyl ether sulfate salt include EMAL 125HP (manufactured by Kao Corporation, polyoxyethylene (1) sodium lauryl ether sulfate), EMAL 125A (manufactured by Kao Corporation, polyoxyethylene (1) ) ammonium lauryl ether sulfate), EMAL 227 (manufactured by Kao Corporation, polyoxyethylene (2) sodium lauryl ether sulfate), etc.

The ether carboxylic acid or its salts that can be used as component (B) can be exemplified by the following general formula (4): R ⁴ O(CH ₂ CH ₂ O) _m CH ₂ COOM ⁴ ‧‧ ‧(4)

(In formula ( ⁴ ), R represents an alkyl or alkenyl group with 10 to 22 carbon atoms; m represents the average addition mole number, a value of 0.5 to ¹⁰ ; M represents a hydrogen atom, an alkali metal, an alkali earth metal, ammonium or organic ammonium)

In the general formula (4), R ⁴ is preferably an alkyl group having 12 to 16 carbons, more preferably an alkyl group having 12 to 14 carbons, from the standpoint of good foaming and detergency.

Furthermore, from the same viewpoint as above, the average addition mole number m of ethylene oxide is preferably 2-5.

^The M4 series can include, for example: hydrogen atoms; alkali metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; ammonium; ammonium derived from alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; Ammonium derived from basic amino acids such as amino acids, etc. Among them, from the same viewpoint as above, one or more kinds selected from sodium, potassium, triethanolamine, and arginine are preferable, and one or two kinds selected from sodium and potassium are more preferable. kind.

The ether carboxylic acid or its salt is from the same point of view as above, and specifically preferably contains polyoxyethylene lauryl ether carboxylic acid or its salt, polyoxyethylene myristyl ether carboxylic acid or its salt, and polyoxyethylene palmitic acid. One or more selected from ether carboxylic acids or their salts, more preferably one or two selected from polyoxyethylene lauryl ether carboxylic acids or their salts, and polyoxyethylene myristyl ether carboxylic acids or their salts , the most preferred system contains polyoxyethylene lauryl ether carboxylic acid or its salt.

In addition, the commercially available system of this ether carboxylic acid or its salt is mentioned, for example: AKYPO RLM 45CA (made by Kao Corporation), AKYPO LM 26C (made by Kao Corporation), etc. are mentioned.

Component (B) can be used alone or in combination of two or more. From the viewpoint of improving foaming, cleansing power, and skin smoothness, the content is preferably 2.2% by mass in liquid skin cleansers More than 2.5% by mass, more than 2.5% by mass of the best, more than 3.2% by mass of the best, more than 3.8% by mass of the best, and less than 7% by mass of the best, less than 6.6% by mass of the best, and 6.2% of the best % or less, the best is less than 4.8% by mass. In addition, the content of component (B) is preferably 2.2 to 7% by mass, more preferably 2.5 to 6.6% by mass, particularly preferred 3.2 to 6.2% by mass, and optimally 3.8 to 4.8% by mass in the liquid skin cleanser. %.

、硬脂基二甲基胺基醋酸甜菜

等醋酸甜菜

型界面活性劑；月桂基二甲基氧化胺等氧化胺型界面活性劑；2-烷基-N-羧甲基-N-羥乙基咪唑鎓甜菜

等咪唑鎓甜菜

型界面活性劑；月桂酸醯胺丙基甜菜

、椰子油脂肪酸醯胺丙基甜菜

等醯胺甜菜

型界面活性劑；月桂基羥磺基甜菜

等磺基甜菜

型界面活性劑等。 The amphoteric surfactant of component (C) can be used as long as it is usually used in skin cleansers, for example: beet lauryl dimethylaminoacetate

, Stearyl Dimethylaminoacetic Beet

acetic beets

type surfactant; amine oxide type surfactant such as lauryl dimethyl amine oxide; 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolium beet

Isoimidazolium beet

type surfactant; lauric acid amidopropyl beet

, coconut oil fatty acid amidopropyl beet

isoamide sugar beet

Type Surfactant; Lauryl Hydroxybeet

isosulfobeet

type surfactants, etc.

型界面活性劑、磺基甜菜

型界面活性劑及醯胺甜菜

型界面活性劑中選擇至少1種，更佳係含有從磺基甜菜

型界面活性劑及醯胺甜菜

型界面活性劑中選擇至少1種，最佳係至少含有磺基甜菜

型界面活性劑。更具體較佳係含有從月桂基二甲基胺基醋酸甜菜

、硬脂基二甲基胺基醋酸甜菜

、月桂基羥磺基甜菜

及月桂酸醯胺丙基甜菜

中選擇至少1種，更佳係含有從月桂基羥磺基甜菜

及月桂酸醯胺丙基甜菜

中選擇至少1種，特佳係至少含有月桂基羥磺基甜菜

。 Among them, from the standpoint of improving foaming and suppressing stickiness during rinsing, it is preferable to contain acetic acid beet

type surfactant, sulfobeet

type surfactant and amide beet

Select at least one type of surfactant, more preferably containing from sulfobeet

type surfactant and amide beet

Choose at least one type of surfactant, the best system contains at least sulfobeet

type surfactants. More particularly preferred is the beet containing lauryldimethylaminoacetate

, Stearyl Dimethylaminoacetic Beet

, lauryl hydroxysulfobeet

and amidopropyl beet laurate

Choose at least 1 species, more preferably containing from lauryl hydroxysulfobeet

and amidopropyl beet laurate

Choose at least 1 species, the special series contains at least lauryl hydroxysulfobeet

.

Ingredient (C) can be used alone or in combination of two or more. From the viewpoint of suppressing the increase in viscosity when adding water, improving the degree of water fusion, foaming, and suppressing stickiness when rinsing, it contains The amount accounts for at least 0.2% by mass in the liquid skin cleanser, preferably at least 0.4% by mass, more preferably at least 1.0% by mass, and more than 1.4% by mass of the most preferred, and preferably at least 4.0% by mass, more preferably 2.5 mass% or less for the best series, 1.9 mass% or less for the ultra-premium series, and 1.6 mass% or less for the best series. Also, the content of component (C) is 0.2 to 4.0% by mass, preferably 0.4 to 2.5% by mass, more preferably 1.0 to 1.9% by mass, and most preferably 1.4 to 1.6% by mass in the liquid skin cleanser.

In the present invention, the mass ratio (B)/(C) of component (B) to component (C) is preferably: More than 5/3, more than 1.7 for the best, 2.2 or more for the best, 2.8 or more for the best, 10 or less for the best, 6 or less for the better, 4.3 or less for the best, and 3.3 or less for the best. In addition, the mass ratio (B)/(C) of component (B) to component (C) is 5/3~10, preferably 1.7~6, more preferably 2.2~4.3, and most preferably 2.8~3.3.

Carbonates of component (D) include, for example: alkali metal salts such as sodium carbonate, potassium carbonate, sodium bicarbonate, and potassium bicarbonate; alkali metal salts such as calcium carbonate, magnesium carbonate, and magnesium bicarbonate; ammonium carbonate, ammonium bicarbonate and other ammonium salts.

Among them, from the viewpoint of making the properties of the liquid skin cleanser water-soluble, and taking into account the ease of taking out the composition, and the foaming and cleaning properties, it is preferable to use sodium carbonate, At least one selected from potassium carbonate, sodium bicarbonate and potassium bicarbonate, more preferably containing at least one of sodium carbonate and potassium carbonate, and at least one of sodium bicarbonate and potassium bicarbonate, especially preferably containing carbonate Sodium and Sodium Bicarbonate.

Component (D) can be used alone or in combination of two or more. From the viewpoint of improving water fusion, skin smoothness, and suppressing the decrease in viscosity of the liquid skin cleanser, the content of the component (D) accounts for 1% of the liquid skin cleanser. The content of the agent is more than 0.2% by mass, more preferably more than 0.4% by mass, more preferably more than 1% by mass, more than 1.8% by mass of the most preferred, and preferably less than 7% by mass, more preferably less than 5% by mass , The best series is below 3.5% by mass, and the best series is below 2.5% by mass. In addition, the content of component (D) is preferably 0.2 to 7% by mass, more preferably 0.4 to 5% by mass, most preferably 1 to 3.5% by mass, and most preferably 1.8 to 2.5% by mass in the liquid skin cleanser. %.

The polyhydric alcohol of component (E) can be used as long as it is usually used in skin cleansing composition, for example: glycerin, diglycerin, sorbitol, mannitol, erythritol, xylitol, maltitol , trehalose, sucrose and other polyols containing more than 3 hydroxyl groups (polyols with more than three valences); ethylene glycol, propylene glycol, 1,3-propanediol, 1,3-butanediol, diethylene glycol, dipropylene glycol , isoprene glycol, polyethylene glycol (average molecular weight 2000 or less), polypropylene glycol (average molecular weight 1500 or less) and other polyols (divalent polyols) containing 2 hydroxyl groups.

Among these, polyhydric alcohols having three or more valences are particularly preferred from the viewpoint of water-merging and foaming, containing one or two or more selected from glycerin, diglycerin, sorbitol, and maltitol, and more preferably The best series contains 1 or 2 kinds of glycerin and diglycerin, and the best series contains glycerin. In addition, the binary polyol preferably contains one or two kinds selected from ethylene glycol, propylene glycol, 1,3-propanediol, 1,3-butanediol, diethylene glycol, dipropylene glycol, and isoprene glycol. more than one, more preferably one or more selected from propylene glycol, 1,3-propanediol, 1,3-butanediol, diethylene glycol, and dipropylene glycol, and particularly preferably one or more selected from propylene glycol, dipropylene glycol, 1, or 2 or more types are selected from 1,3-butanediol.

Component (E) preferably contains a dihydric polyhydric alcohol especially from the viewpoint of suppressing a rise in viscosity when water is added to a liquid skin cleanser and making water blend well. Also, when the component (E) contains a trivalent or higher polyhydric alcohol, it is preferable to combine at least a divalent polyhydric alcohol in the polyhydric alcohol, and it is more preferable to contain 5 mass % or more of a dihydric polyhydric alcohol in the polyhydric alcohol. , more preferably contain more than 10% by mass.

Component (E) can be used alone or in combination of two or more. From the viewpoint of suppressing the increase in viscosity of the liquid skin cleanser when water is added, as well as making the water blend and foam well, the content of the liquid skin cleanser accounts for 1% of the liquid skin cleanser. Among the detergents, more than 0.1% by mass is preferred, more than 0.4% by mass is more preferred, more than 0.7% by mass is especially preferred, and more than 0.9% by mass is most preferred, and less than 10% by mass is preferred, and 7.5% by mass is more preferred % or less, extra-best 3 mass % or less, best 1.8 mass % or less. In addition, the content of component (E) in the liquid skin cleanser is preferably 0.1 to 10% by mass, more preferably 0.4 to 7.5% by mass, most preferably 0.7 to 3% by mass, most preferably 0.9 to 1.8% by mass %.

In the present invention, the mass ratio (B)/(E) of component (B) to component (E) is preferably from the viewpoint of suppressing viscosity increase when water is added, and making water merging and foaming good. 0.5 or more, more preferably 0.6 or more, extra best 2.5 or more, more preferably 10 or less, more preferably 6 or less, and extra best 5 or less. Also, the mass ratio (B)/(E) of the component (B) to the component (E) is preferably 0.5-10, more preferably 0.6-6, and most preferably 2.5-5.

The water system of component (F) is used as a solvent, and the content is preferably at least 40% by mass, more preferably at least 50% by mass, and particularly preferably at least 54% by mass, and preferably 90% by mass in the liquid skin cleanser. Mass % or less, more preferably 85 mass % or less, extra best 80 mass % or less. In addition, the content of the component (F) is preferably 40 to 90% by mass, more preferably 50 to 85% by mass, and most preferably 54 to 80% by mass in the liquid skin cleanser.

In the present invention, since the carbonate of the component (D) is contained in the composition, if an acid exists in the composition, the carbonate of the component (D) reacts with the acid to generate carbonic acid gas, and a moderate viscosity cannot be achieved. It is difficult to balance ease of taking out moderately and dissolving collapsibility. Therefore, not only the component (A), but also other components (such as the component (G) described later) are acidic components, it is preferable to neutralize.

The neutralization rate of the total of component (A) and other acidic components is preferably from 0.90 to 1.10, and more preferably from 0.95 to 1.05, from the standpoint of improving ease of taking out moderately and dissolving and collapsing.

The liquid skin cleansing agent of the present invention may further contain (G) a water-soluble polymer to provide foaming and smooth skin.

Such water-soluble polymers may be used as long as they are usually used in skin cleansers.

Examples of water-soluble polymers include acrylic acid-alkyl (meth)acrylate copolymers, cellulose with added hydroxyethyl or hydroxypropyl groups, highly polymerized polyalkylene glycols, cationic polymers, etc. .

Acrylic acid-(meth)acrylic acid alkyl ester copolymer system can be, for example: acrylic acid/alkyl acrylate crosslinked polymer, etc., such as: PEMULEN TR-1, PEMULEN TR-2, CARBOPOL ETD2020, CARBOPOL 1382, CARBOPOL 1342 can be used (All of the above are manufactured by Lubrizol Advanced Materials Co., Ltd.); AQUPEC HV-501ER (manufactured by Sumitomo Seika Co., Ltd.); and other commercially available products.

Cellulose to which hydroxyethyl or hydroxypropyl groups have been added means that some of the hydrogen atoms of the hydroxyl groups of cellulose are substituted by hydroxyethyl or hydroxypropyl groups, and may have substituents other than these.

Specific examples include hydroxyethylcellulose, hydroxypropylcellulose, hydroxyethylmethylcellulose, and hydroxypropylmethylcellulose.

These are made by reacting cellulose with caustic soda to form alkali cellulose, and then using methane chloride, monochloroacetic acid, ethylene oxide, propylene oxide, etc. to replace the hydrogen atoms of the hydroxyl groups of cellulose with Those obtained from hydroxyethyl, hydroxypropyl, methyl, carboxymethyl, etc.

These celluloses have an average degree of substitution greater than 0, more preferably 0.5 or more, and preferably 3 or less, more preferably 2 or less, from the viewpoint of improving foamability and foam persistence. In addition, the weight average molecular weight is preferably 200,000 or more, more preferably 500,000 or more, and most preferably 650,000 or more from the viewpoint of improving the solubility, foamability, and foam persistence of the liquid detergent composition. , preferably less than 3,000,000, more preferably less than 2,000,000, and most preferably less than 1,600,000.

In addition, in the present invention, the average degree of substitution is obtained by NMR, the weight average molecular weight is obtained using polyethylene oxide as a standard substance, and the gel permeation chromatography (GPC)-multi-angle laser light scattering detection device (MALLS ) system for measurement.

The cellulose to which hydroxyethyl or hydroxypropyl groups have been added is preferably hydroxyethyl cellulose or hydroxypropyl methyl cellulose, preferably an average degree of substitution of 0.5-2 and a weight-average molecular weight of 650,000-1,600,000.

As cellulose to which hydroxyethyl or hydroxypropyl groups have been added, for example, CELLOSIZE QP52000H (manufactured by Dow Chemical Co.), HEC Daicel SE400, SE500, SE600, SE850, SE900 (both of which are Daicel Finechem Co., Ltd.), etc.; for hydroxypropyl methylcellulose, for example: METOLOSE 60SH, 65SH (both are manufactured by Shin-Etsu Chemical Co., Ltd.), BENECEL E50, E4M, E10M, F4MC, K99C, K4M, K15M, Commercial items such as K35M, K100M, and K200M (all of which are manufactured by ASHLAND Co., Ltd.).

Highly polymerized alkylene glycols in the present invention are polyalkylene glycols with a weight average molecular weight of 20,000 or more. From the viewpoint of making foaming and foam volume good, the weight average molecular weight is preferably 400,000 or more. , More than 1 million for the best, more than 1.5 million for the best, and less than 5 million for the best, less than 3.5 million for the better, and less than 2.5 million for the best. Also, from the same point of view, the carbon number of the alkylene group of the high-polymerization polyalkylene glycol is preferably 2 to 6, more preferably 2 to 4, and the specific alkylene group is preferably ethylene, Propyl, more preferably ethyl.

Highly polymerized alkylene glycol specific systems can be used, for example: POLYOX WSR N-10, POLYOX WSR N-60K (weight average molecular weight 2 million, manufactured by Dow Chemical); ALKOX E-100 (weight average molecular weight 3 million, manufactured by Meisei Chemical Kogyo Co., Ltd.); ALKOX E-30G (weight average molecular weight 400,000, manufactured by Meisei Chemical Industry Co., Ltd.); ALKOX E-240 (weight average molecular weight 5 million, manufactured by Meisei Chemical Industry Co., Ltd.).

Cationic polymers contain, for example, amine groups, imidazolyl groups, pyridyl groups, their salts or quaternary salts, etc., from the viewpoint of water fusion, foaming, and skin smoothness, The cationic charge density is preferably above 2meq/g, more preferably 2~8meq/g, and most preferably 3~7meq/g.

Here, the "cationic charge density" refers to the number of equivalents (meq/g) of cationic charges in the monomer units constituting the polymer.

The cationic polymer system can be, for example: the homopolymer of dimethyl diallyl ammonium chloride; dimethyl diallyl ammonium chloride and (meth)acrylic acid, (meth)acrylate, (meth) base) copolymers of other monomers such as acrylamide; polychlorinated methacryloxyethyltrimethylammonium chloride, etc.

More systematic examples include homopolymer of dimethyldiallyl ammonium chloride (MERQUAT 100; manufactured by NALCO: charge density 6.2 meq/g), copolymerization of dimethyldiallyl ammonium chloride and acrylic acid (MERQUAT 295, manufactured by NALCO Corporation: charge density 5.9 meq/g), copolymer of dimethyl diallyl ammonium chloride and acrylic acid (MERQUAT 280, manufactured by NALCO Corporation: charge density 5.0 meq/g), dichloride A copolymer of methyldiallyl ammonium and acrylamide (MERQUAT 550, manufactured by NALCO Corporation: charge density 3.2 meq/g), polymethacryloxyethyltrimethylammonium chloride (produced by Kao Corporation) : charge density 4.8meq/g), copolymer of methylvinylimidazolium chloride and vinylpyrrolidone (LUVIQUAT excellence, manufactured by BASF Corporation: charge density 6.1meq/g; and LUVIQUAT FC550, manufactured by BASF Corporation: charge density 4.4 meq/g), etc.

Cationic polymers are homopolymers of dimethyl diallyl ammonium chloride, dimethyl diallyl ammonium chloride Copolymer with acrylic acid, copolymer of dimethyldiallyl ammonium chloride and acrylamide.

The water-soluble polymer of the component (G) preferably contains at least a cationic polymer, more preferably a cationic polymer and acrylic acid- Alkyl (meth)acrylate copolymer, cellulose with added hydroxyethyl or hydroxypropyl group, and high-polymer polyalkylene glycol can be selected from one or more kinds, especially cationic polymers , Added hydroxyethyl or hydroxypropyl cellulose and high polymer polyalkylene glycol.

More specifically, it is preferable to contain, for example, homopolymers of dimethyldiallyl ammonium chloride, copolymers of dimethyldiallyl ammonium chloride and acrylic acid, dimethyldiallyl ammonium chloride and propylene Choose one or more from the copolymers of amide, polymethacryloxyethyltrimethylammonium chloride, and copolymers of methylvinylimidazolium chloride and vinylpyrrolidone, more preferably It contains from: homopolymer of dimethyl diallyl ammonium chloride, copolymer of dimethyl diallyl ammonium chloride and acrylic acid, copolymer of dimethyl diallyl ammonium chloride and acrylamide , polymethacryloxyethyltrimethylammonium chloride, and copolymers of methylvinylimidazolium chloride and vinylpyrrolidone, and acrylic acid/acrylic acid alkyl Choose one or more from ester cross-linked polymer, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, high-polymer polyethylene glycol and high-polymer polypropylene glycol, and the best series contain from: dimethyl chloride Diallyl ammonium homopolymer, copolymer of dimethyl diallyl ammonium chloride and acrylic acid, copolymer of dimethyl diallyl ammonium chloride and acrylamide, polymethacryl chloride One or more selected from oxyethyltrimethylammonium chloride and copolymers of methylvinylimidazolium chloride and vinylpyrrolidone, and hydroxyethylcellulose or hydroxypropylmethylcellulose, With high polymer polyethylene glycol or high polymer polypropylene glycol.

Component (G) is preferably contained in an amount of at least 0.01% by mass, more preferably at least 0.05% by mass, and most preferably at least 0.05% by mass in the liquid skin cleanser from the viewpoint of making water blend, foam, and smooth skin. It is at least 0.1% by mass, preferably at most 1.5% by mass, more preferably at most 0.8% by mass, and most preferably at most 0.3% by mass. Also, the content of the component (G) is preferably 0.01 to 1.5% by mass, more preferably 0.05 to 0.8% by mass, and most preferably 0.1 to 0.3% by mass in the liquid skin cleanser.

The liquid skin cleanser of the present invention can further contain (H) nonionic surfactant, which can improve foaming and cleansing power.

Examples of nonionic surfactants include: polyglycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene polyoxypropylene glycol, polyoxyethylene sorbitan fatty acid ester , polyoxyethylene sorbitan fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hardened castor oil, polyoxyethylene hardened castor oil fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkyl ether fatty acid ester , sucrose fatty acid esters, alkyl polyglucosides, (poly) alkyl glyceryl ethers, alkyl alkanolamides, etc.

Among these, the HLB of the nonionic surfactant is preferably at least 8, more preferably at least 9, and most preferably at least 9.5, from the viewpoint of improving foaming and skin softness. Below 18, preferably below 16, and especially below 14. Also, the HLB of the component (H) is preferably 8-18, more preferably 9-16, and most preferably 9.5-14.

In the present invention, HLB (Hydrophile-Lipophilic Balance, hydrophilicity-lipophilicity balance) is calculated by (Σinorganic value/Σorganic value)×10. Here, the "inorganic value" and the "organic value" are respectively, for example, the "organic value" of 1 carbon atom in the molecule is 20, and the "inorganic value" of 1 hydroxyl group is 100, setting and matching various atoms or functional groups The "inorganic value" and "organic value" of the organic compound can be calculated by accumulating the "inorganic value" and "organic value" of all atoms and functional groups in the organic compound (for example, refer to Koda Yoshio, "New Edition Organic Concept Map-Basic and Application-"page 3~17, page 95~102, published by Sankyo Publishing in 1984). Moreover, the HLB of the mixed surfactant using 2 or more types of surfactants can be obtained by weighting the HLB of each surfactant from a blending ratio.

The nonionic surfactant of component (H) is preferably a polyglycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester from the viewpoint of good foam quality and detergency. One or more selected from esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hardened castor oil fatty acid esters, polyoxyethylene alkyl ethers, alkyl polyglucosides, and alkyl alkanolamides , more preferably containing one or more selected from polyethylene glycol fatty acid esters, polyoxyethylene alkyl ethers, alkyl polyglucosides and alkyl alkanolamides, particularly preferably containing alkyl alkanols Amide.

The alkyl alkanolamides that can be used as the component (H) include, for example, alkyl alkanolamides represented by the following general formula (5):

(In the formula, R ⁵ CO represents an acyl group with 8 to 20 carbons; R ⁶ represents a hydrogen atom, a methyl group or a hydroxyethyl group)

In general formula (5), R ⁵ CO is preferably an acyl group with 8-20 carbons, more preferably an acyl group with 10-18 carbons. Also, R ⁶ is preferably a hydrogen atom or a methyl group.

Examples of commercially available polyethylene glycol fatty acid esters include polyethylene glycol monolaurate (12EO) (EMANON 112 (HLB13.7), manufactured by Kao Corporation) and the like.

Examples of commercially available polyoxyethylene alkyl ethers include polyoxyethylene (21) lauryl ether (EMULGEN 121-G (HLB15.0), manufactured by Kao Corporation), polyoxyethylene (9) lauryl ether (EMULGEN 109P (HLB12.0), manufactured by Kao Corporation), polyoxyethylene (20) octyl dodecyl ether (EMULGEN 2020G (HLB13.0), manufactured by Kao Corporation), polyoxyethylene (25) octyl dodecyl Ether (EMULGEN 2025G (HLB15.6), manufactured by Kao Corporation), etc.

Preferable commercial products of alkyl polyglucoside are, for example, decyl glucoside (MYDOL 10 (HLB14.0), manufactured by Kao Corporation), lauryl glucoside (MYDOL 12 (HLB14.6), manufactured by Kao Corporation), etc. .

Commercially available products of alkyl alkanolamides include, for example: cocamide monoethanolamine (COCAMIDE MEA, AMINON C01-S (HLB10.7), manufactured by Kao Corporation), lauramide diethanolamine (LAURAMIDE DEA, AMINON L-02 (HLB12.5), manufactured by Kao Corporation), etc.

The content of component (H) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and most preferably 0.5% by mass in liquid skin cleansers from the viewpoint of enhancing foaming and cleansing power The above, and preferably at most 5% by mass, more preferably at most 3% by mass, and most preferably at most 1% by mass. Also, the content of the component (H) is preferably 0.05 to 5% by mass, more preferably 0.1 to 3% by mass, and most preferably 0.5 to 1% by mass in the liquid skin cleanser.

The liquid skin cleansing agent of the present invention may further contain (I) a pearlescent agent, which can make the formulation have a glossy feel and a good fusion with water.

The pearlescent agent is preferably diol di-fatty acid ester, more preferably from ethylene glycol dioleate, ethylene glycol dilaurate, ethylene glycol distearate, propylene glycol dilaurate and propylene glycol dilaurate. At least one kind is selected from stearic acid esters, particularly preferably at least one kind is selected from ethylene glycol dioleate, ethylene glycol dilaurate, and ethylene glycol distearate.

The content of component (I) is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and most preferably 0.4% by mass in the liquid skin cleanser from the viewpoint of glossiness of the preparation and good integration with water. More than 4% by mass, preferably 4% by mass or less, more preferably 3% by mass or less, and most preferably 2% by mass or less. Also, the content of the component (I) is preferably 0.01 to 4% by mass, more preferably 0.1 to 3% by mass, and most preferably 0.4 to 2% by mass in the liquid skin cleanser.

The liquid skin cleanser of the present invention may further contain components commonly used in cleansers, for example: surfactants other than components (A), (B), (C) and (H), component (E) Moisturizers, oily ingredients, fungicides, anti-inflammatory agents, preservatives, chelating agents, thickeners, salts, scrubs, fragrances, cooling agents, pigments, ultraviolet absorbers, antioxidants, plant extracts, etc.

The liquid skin cleanser of the present invention may contain an oily component from the viewpoint of improving rinse performance. From the standpoint of improving foaming and cleansing power, the oil-based component accounts for preferably at most 3% by mass, more preferably at most 2% by mass, and most preferably at most 1% by mass in the liquid skin cleanser. 0.5% by mass or less. The so-called "oil component" here is a hydrophobic substance that is phase-separated from water, including, for example, oil, hydrocarbon oil, ester oil, higher alcohol (more than 10 carbon atoms), polysiloxane oil, and the like.

The liquid skin cleanser of the present invention may further contain a cationic surfactant from the viewpoint of improving skin smoothness. The cationic surfactant accounts for preferably at most 5% by mass, more preferably at most 3% by mass, and most preferably at most 3% by mass in the liquid skin cleanser from the viewpoint of improving skin smoothness and suppressing stickiness during rinsing. It is 1% by mass or less, most preferably 0.5% by mass or less.

The liquid skin cleanser of the present invention can be produced by mixing the blending ingredients by a usual method.

For example, it can be produced by a method including the following steps 1, 2, 3 and 4.

(Step 1) The step of heating component (F) to 60~80°C in advance; (Step 2) In the water heated in step 1, the unneutralized substance of component (A) and the neutralizing agent (hydrogen Potassium, etc.), mix according to the mode that becomes neutralization rate 95～105%, and the step that obtains the composition that contains fatty acid salt; (Step 3) add the composition that contains fatty acid salt that obtains in step 2 sequentially, and component ( B), component (C), component (D) and component (E), and optional component (G), component (H), component (I) and other components, and the step of mixing; (step 4) The step of cooling the mixture obtained in step 3 to 20~35°C.

Among them, when the other components used are other acidic components other than the unneutralized components of component (A), since component (D) may react with acidic components to generate carbon dioxide gas, it is preferable to use the acidic components in the above step 2. In the process, after mixing the unneutralized material of component (A) with other acidic components, add a neutralizer to neutralize the unneutralized material of component (A) and other acidic components to a predetermined neutralization rate, and then move to Step 3 above.

For example, when part of component (B) is an acidic component, it can manufacture by the method including the following step 1', step 2', step 3' and step 4'.

(Step 1') The step of heating the component (F) to 60~80°C in advance; (Step 2') In the water heated in the step 1', the unneutralized substance of the component (A), the component (B) Unneutralized matter, other acidic components (EDTA, etc.) as needed, and neutralizers (potassium hydroxide, etc.), are mixed in such a way that the neutralization rate is 95~105%, and the composition containing fatty acid salt is obtained (step 3') sequentially add the fatty acid salt-containing composition obtained in step 2', the remaining component (B), and component (C), component (D) and component (E), and optionally A step of mixing components (G), component (H), component (I) and other components other than acidic components; (step 4') cooling the mixture obtained in step 3' to 20~35°C.

The container system for receiving the liquid skin cleansing agent of the present invention can be selected according to viscosity and capacity, and various containers such as bottles, tubes, pumps, bags, etc. can be selected. As the material, plastic, glass, metal, or a composite thereof can be used arbitrarily. The liquid skin cleanser is preferably a bag container or a bottle container, more preferably a bottle container, from the viewpoint of ease of taking out the liquid skin cleanser moderately and excellent economical efficiency.

The so-called "bag container" refers to, for example, a resin film layer made of an outer resin film layer with excellent printability and barrier properties to the contents, and an inner resin film layer with excellent airtightness (heat sealability, etc.) and the like. A flat bag-shaped container made by sealing (heat sealing, etc.) the left and right edges and the bottom edge between the bag body films; or sandwiching another resin film between the above-mentioned resin films, and then sealing the peripheral edges Self-supporting bag-shaped containers (so-called "stand-up pouches") made by sealing the inside.

The bottle container can be used without particular limitation. The material of the bottle container can be from, for example: polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, ethylene-vinyl alcohol resin, acrylonitrile-styrene resin, ABS resin, polyamide Resin containers such as amine; and glass containers are properly selected. Also, the structure of the bottle container is preferably a single layer or a layer structure of two or more layers.

The liquid skin cleanser of the present invention has the characteristics of being able to quickly complete rinsing because it has excellent skin smoothness after cleansing, good hydration during foaming, and less undissolved residue. If there is too much undissolved residue, the liquid skin cleanser will remain on the skin in a high concentration state, so it is not easy to rinse off. When improving the smoothness of the skin after cleansing of the liquid skin cleanser, in order to reduce the harshness caused by fatty acid salts, it can be achieved by mixing more anionic surfactants other than fatty acid salts. However, a significant increase in the viscosity of the liquid skin cleanser will occur due to the addition of water when the formulation is removed and foamed. Therefore, the undissolved residue of the preparation is generated, which leads to the problems of sticky residue and time-consuming flushing during rinsing. However, with the above-mentioned structure, the present invention can improve the softness of the skin after cleaning while maintaining the foaming and cleaning power well. Rinse residue, not sticky, can quickly complete the excellent effect of rinsing.

The liquid skin cleanser of the present invention is liquid at 30°C. From the viewpoint of the ease of taking out of the container, the viscosity at 30°C is preferably 1000-8500mPa‧s, more preferably 1100-8000mPa‧s, and most preferably The system is 1200~6500mPa‧s.

In addition, in the present invention, the viscosity is measured at 30° C. using a B-type viscometer/VISCOMETER TVB-10M (manufactured by TOKI SANGYO CO., LTD.).

The liquid skin cleanser of the present invention is preferably such as: washing fabrics, shower gel, hand soap, etc., more preferably shower gel.

The liquid skin cleansing agent of the present invention can be used by applying it to any place such as the skin, more specifically the scalp, face, body, hands and feet, and then rinsing with water.

In relation to the above-mentioned embodiments, the present invention further discloses the following compositions.

<1> A liquid skin cleanser containing the following ingredients (A), (B), (C), (D), (E) and (F): (A) Fatty acid salt: 5~18% by mass ; (B) anionic surfactants other than component (A): 2.2 to 7% by mass; (C) amphoteric surfactants: 0.2 to 4% by mass; (D) carbonate: 0.2 to 7% by mass; (E) Polyol: 0.1-10% by mass; (F) water, the mass ratio (B)/(C) of component (B) to component (C) is 5/3-10.

<2> The liquid skin cleansing agent as described in <1> above, wherein the fatty acid salt of component (A) is preferably the general formula (1): [Chemical 3] R ¹ -COOX‧‧‧(1)

(In the formula, R1 represents ^a straight chain or branched chain alkyl or alkenyl group with 9~21 carbons; X represents alkali metal, ammonium, ammonium derived from alkanolamine or basic amino acid)

As shown, it is more preferable to contain at least one kind selected from the salts of lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid, and it is more preferable to contain at least one selected from the salts of lauric acid, myristic acid, and palmitic acid. 1 species.

<3> The liquid skin cleanser as described in <1> or <2> above, wherein the content of component (A) is preferably 6.5% by mass or more in the liquid skin cleanser in terms of fatty acid conversion More preferably, it is more than 8% by mass, and it is more than 10% by mass, and it is more preferably not more than 16% by mass, more preferably, it is not more than 15% by mass, and it is not more than 12% by mass.

<4> The liquid skin cleansing agent described in any one of the above <1> to <3>, wherein the anionic surfactant of component (B) preferably contains an alkyl sulfate ester salt, an alkyl Choose at least one of ether sulfate ester salt, ether carboxylic acid or its salt, more preferably contain at least two kinds, especially preferably contain at least alkyl sulfate ester salt and/or alkyl ether sulfate ester salt, and ether carboxylic acid Salt.

<5> The liquid skin cleansing agent as described in the above <4>, wherein, among the anionic surfactants of the component (B), the alkyl sulfate ester salt is preferably the following general formula (2): R ² OSO ₃ M ² ‧‧‧(2).

(In formula (2), R ² represents an aliphatic hydrocarbon group with 8 to 22 carbons; M ² represents a cation selected from alkali metals, alkaline earth metals, ammonium, alkyl ammonium, alkanolammonium, and ammonium glucose ) is more preferably one or more selected from sodium lauryl sulfate, triethanolamine lauryl sulfate, and ammonium lauryl sulfate.

<6> The liquid skin cleansing agent as described in the above <4>, wherein, among the anionic surfactants of the component (B), the alkyl ether sulfate is preferably the following general formula (3): R ³ O (CH ₂ CH ₂ O) _n SO ₃ M ³ ‧‧‧(3)

(In the formula ( ³ ), R represents an aliphatic hydrocarbon group with 8 to 22 carbons; ^M represents a cation selected from alkali metals, alkaline earth metals, ammonium, alkyl ammonium, alkanolammonium, and ammonium glucose ; The n series represents the average addition mole number, 0.5~20)

As shown, it is more preferable to contain one or more kinds selected from polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (1) ammonium lauryl ether sulfate, and polyoxyethylene (2) sodium lauryl ether sulfate.

<7> The liquid skin cleanser as described in the above <4>, wherein, among the anionic surfactants of component (B), ether carboxylic acid or its salt is preferably represented by the following general formula (4): R ⁴ O (CH ₂ CH ₂ O) _m CH ₂ COOM ⁴ ‧‧‧(4)

(In formula ( ⁴ ), R represents an alkyl or alkenyl group with 10 to 22 carbon atoms; m represents the average addition mole number, a value of 0.5 to ¹⁰ ; M represents a hydrogen atom, an alkali metal, an alkali earth metal, ammonium or organic ammonium)

As shown, it is more preferable to contain one or two kinds selected from polyoxyethylene lauryl ether carboxylic acid or its salt, polyoxyethylene myristyl ether carboxylic acid or its salt, and polyoxyethylene palmityl ether carboxylic acid or its salt. Among the above, the most preferable ones contain one or two kinds selected from polyoxyethylene lauryl ether carboxylic acid or its salt, and polyoxyethylene myristyl ether carboxylic acid or its salt, and the most preferable one contains polyoxyethylene lauryl ether carboxylic acid or its salt.

<8> The liquid skin cleanser according to any one of <1> to <7> above, wherein the content of component (B) is preferably 2.5% by mass or more in the liquid skin cleanser. More preferably is 3.2% by mass or more, Extrab is 3.8% by mass or more, preferably is 6.6% by mass or less, more preferably is 6.2% by mass or less, and is preferably 4.8% by mass or less.

型界面活性劑、磺基甜菜

型界面活性劑及醯胺甜菜

型界面活性劑中選擇至少1種，更佳係含有從磺基甜菜

型界面活性劑及醯胺甜菜

型界面活性劑中選擇至少1種，特佳係至少含有磺基甜菜

型界面活性劑。 <9> The liquid skin cleansing agent described in any one of the above <1> to <8>, wherein the amphoteric surfactant of component (C) preferably contains

type surfactant, sulfobeet

type surfactant and amide beet

Choose at least one type of surfactant, more preferably containing from sulfobeet

type surfactant and amide beet

Choose at least one type of surfactant, and the best series contain at least sulfobeet

type surfactants.

、硬脂基二甲基胺基醋酸甜菜

、月桂基羥磺基甜菜

及月桂酸醯胺丙 基甜菜

中選擇至少1種，更佳係含有從月桂基羥磺基甜菜

及月桂酸醯胺丙基甜菜

中選擇至少1種，特佳係至少含有月桂基羥磺基甜菜

。 <10> The liquid skin cleanser according to any one of <1> to <9> above, wherein component (C) preferably contains beet lauryl dimethylaminoacetate

, Stearyl Dimethylaminoacetic Beet

, lauryl hydroxysulfobeet

and amidopropyl beet laurate

Choose at least 1 species, more preferably containing from lauryl hydroxysulfobeet

and amidopropyl beet laurate

Choose at least 1 species, especially good series containing at least lauryl hydroxysulfobeet

.

<11> The liquid skin cleanser according to any one of <1> to <10> above, wherein the content of component (C) is preferably 0.4% by mass or more in the liquid skin cleanser. More preferably is at least 1.0% by mass, extra-preferably at least 1.4% by mass, more preferably at most 2.5% by mass, more preferably at most 1.9% by mass, and extra-preferably at most 1.6% by mass.

<12> The liquid skin cleansing agent according to any one of the above <1> to <11>, wherein the mass ratio (B)/(C) of component (B) to component (C) is preferably 1.7 or more, more preferably 2.2 or more, super best 2.8 or more, more preferably 6 or less, more preferably 4.3 or less, and extra best 3.3 or less.

<13> The liquid skin cleanser according to any one of the above <1> to <12>, wherein the carbonate of component (D) is preferably selected from sodium carbonate, potassium carbonate, sodium bicarbonate and bicarbonate At least one kind of potassium is selected, more preferably at least one kind of sodium carbonate and potassium carbonate, and at least one kind of sodium hydrogencarbonate and potassium hydrogencarbonate are contained, and sodium carbonate and sodium hydrogencarbonate are particularly preferably contained.

<14> The liquid skin cleanser according to any one of <1> to <13> above, wherein the content of component (D) is preferably 0.4% by mass or more in the liquid skin cleanser. More preferably is at least 1% by mass, extra-preferably at least 1.8% by mass, more preferably at most 5% by mass, more preferably at most 3.5% by mass, and extra-preferably at most 2.5% by mass.

<15> The liquid skin cleansing agent described in any one of the above <1> to <14>, wherein the polyhydric alcohol of the component (E) is a trivalent or higher polyhydric alcohol, and preferably contains glycerin, bis One or more selected from glycerin, sorbitol, and maltitol, more preferably one or two selected from glycerin and diglycerin, particularly preferably glycerin.

<16> The liquid skin cleansing agent according to any one of the above <1> to <15>, wherein the polyhydric alcohol of component (E) is a dihydric polyhydric alcohol, preferably containing ethylene glycol, Propylene glycol, 1,3-propanediol, 1,3-butanediol, diethylene glycol, dipropylene glycol, and isoprene glycol are selected from one or more kinds, and more preferably, they contain propylene glycol, 1,3-propanediol, One or two or more selected from 1,3-butanediol, diethylene glycol, and dipropylene glycol, and the most preferred type contains one or two or more selected from propylene glycol, dipropylene glycol, and 1,3-butanediol.

<17> The liquid skin cleansing agent according to any one of the above <1> to <16>, wherein the component (E) preferably contains a divalent polyhydric alcohol.

<18> The liquid skin cleanser according to any one of <1> to <17> above, wherein the content of component (E) is preferably 0.4% by mass or more in the liquid skin cleanser. More preferably, it is 0.7% by mass or more, Ultrapreferably, it is 0.9% by mass or more, and more preferably, it is 7.5% by mass or less, More preferably, it is 3% by mass or less, and Extrapreferably, it is 1.8% by mass or less.

<19> The liquid skin cleanser according to any one of <1> to <18> above, wherein the mass ratio (B)/(E) of component (B) to component (E) is preferably It is 0.5 or more, more preferably 0.6 or more, and especially good is 2.5 or more, and preferably is 10 or less, more preferably is 6 or less, and most preferably is 5 or less.

<20> The liquid skin cleanser according to any one of <1> to <19> above, wherein the water content of component (F) is preferably 40% by mass or more in the liquid skin cleanser , more preferably 50% by mass or more, extra-preferably 54% by mass or more, and more preferably 90% by mass or less, more preferably 85% by mass or less, and extra-preferably 80% by mass or less. <21> The liquid skin cleansing agent according to any one of <1> to <20> above, further comprising (G) a water-soluble polymer.

<22> The liquid skin cleansing agent as described in the above <21>, wherein (G) the water-soluble polymer is preferably an acrylic acid-(meth)acrylate alkyl ester copolymer, a hydroxyethyl or Hydroxypropyl cellulose, highly polymerized polyalkylene glycol, and cationic polymers are selected, more preferably cationic polymers.

<23> The liquid skin cleanser as described in <21> or <22> above, wherein the content of component (G) is preferably 0.01% by mass or more, more preferably 0.05% by mass of the liquid skin cleanser. More than 0.1% by mass, preferably 0.1% by mass or more, preferably 1.5% by mass or less, more preferably 0.8% by mass or less, and 0.3% by mass or less for Extrabest.

<24> The liquid skin cleansing agent according to any one of the above <1> to <23>, further comprising (H) a nonionic surfactant.

<25> The liquid skin cleanser as described in the above <24>, wherein the HLB of the (H) nonionic surfactant is preferably 8 or more, more preferably 9 or more, most preferably 9.5 or more, and, HLB is preferably below 18, more preferably below 16, and extremely good below 14.

<26> The liquid skin cleansing agent as described in the above <24> or <25>, wherein the (H) nonionic surfactant preferably contains polyethylene glycol fatty acid ester, polyoxyethylene alkyl One or more selected from ether, alkyl polyglucoside and alkyl alkanolamide, more preferably containing alkyl alkanolamide, particularly preferably the following general formula (5): [Chemical 4]

(In the formula, R ⁵ CO represents an acyl group with 8 to 20 carbons; R ⁶ represents a hydrogen atom, methyl group or hydroxyethyl group)

The indicated alkyl alkanolamides.

<27> The liquid skin cleanser according to any one of the above <24> to <26>, wherein the content of component (H) in the liquid skin cleanser is preferably 0.05% by mass or more, More preferably is at least 0.1% by mass, extra-preferably at least 0.5% by mass, more preferably at most 5% by mass, more preferably at most 3% by mass, and extra-preferably at most 1% by mass.

<28> The liquid skin cleansing agent according to any one of the above <1> to <27>, further comprising (I) a pearlescent agent.

<29> The liquid skin cleansing agent as described in the above <28>, wherein (I) the pearlescent agent is preferably selected from ethylene glycol dioleate, ethylene glycol dilaurate, ethylene glycol distearate At least one selected from ethylene glycol dioleate, propylene glycol dilaurate and propylene glycol distearate, more preferably from ethylene glycol dioleate, ethylene glycol dilaurate and ethylene glycol distearate Choose at least 1 type.

<30> The liquid skin cleanser as described in <28> or <29> above, wherein the content of component (I) is preferably 0.01% by mass or more, more preferably 0.1% by mass in the liquid skin cleanser. More than 0.4% by mass of the best, 4% by mass or less of the best, 3% or less of the best, and 2% or less of the best.

<31> The liquid skin cleanser according to any one of <1> to <30> above, wherein the content of the oily component in the liquid skin cleanser is preferably 3% by mass or less, and more 2% by mass or less for the best series, 1% by mass or less for the best series, and 0.5% by mass or less for the best series.

<32> The liquid skin cleanser according to any one of <1> to <31> above, wherein the content of the cationic surfactant is preferably 5% by mass or less in the liquid skin cleanser , Better is less than 3% by mass, Extra Best is less than 1% by mass, and Best is less than 0.5% by mass.

<33> The liquid skin cleansing agent according to any one of the above <1> to <32>, which is preferably filled in a bag container or a bottle container, more preferably a bottle container.

<34> The liquid skin cleansing agent as described in any one of the above <1> to <33>, wherein the viscosity at 30°C is preferably 1000~8500mPa‧s, more preferably 1100~80000mPa‧s, especially preferably The system is 1200~65000mPa‧s.

<35> The liquid skin cleanser as described in any one of the above <1>~<34>, wherein it is preferably a body wash, body wash, hand wash, and more preferably a body wash.

<36> The liquid skin cleanser as described in any one of <1> to <35> above, wherein the liquid skin cleanser is applied to the skin, preferably anywhere on the scalp, face, body, hands and feet, and then used Rinse with water before use.

型界面活性劑及醯胺甜菜

型界面活性劑中選擇至少1種的兩性界面活性劑：0.2~4質量%；(D)含有從碳酸鈉、碳酸鉀、碳酸氫鈉及碳酸氫鉀中選擇至少1種的碳酸鹽：0.2~7質量%；(E)多元醇：0.1~10質量%；(F)水，成分(B)相對於成分(C)的質量比例(B)/(C)係5/3~10。 <37> A liquid skin cleanser containing the following ingredients (A), (B), (C), (D), (E) and (F): (A) contains lauric acid, myristic acid , palmitic acid, stearic acid, oleic acid salts selected at least one fatty acid salt: 5~18% by mass; (B) containing alkyl sulfate ester salt, alkyl ether sulfate ester salt, and ether carboxylic acid or Anionic surfactants selected from at least one of its salts: 2.2 to 7% by mass; (C) containing sulfobeet

type surfactant and amide beet

Amphoteric surfactants selected from at least one type of surfactants: 0.2 to 4% by mass; (D) carbonates containing at least one selected from sodium carbonate, potassium carbonate, sodium bicarbonate, and potassium bicarbonate: 0.2 to 4% by mass; 7% by mass; (E) polyol: 0.1-10% by mass; (F) water, the mass ratio (B)/(C) of component (B) to component (C) is 5/3-10.

型界面活性劑及醯胺甜菜

型界面活性劑中選擇至少1種的兩性界面活性劑：0.2~4質量%；(D)含有從碳酸鈉、碳酸鉀、碳酸氫鈉及碳酸氫鉀中選擇至少1種的碳酸鹽：0.2~7質量%；(E)多元醇：0.1~10質量%；(F)水，成分(B)相對於成分(C)的質量比例〔(B)/(C)〕係1.7~4.2，成分 (B)相對於成分(E)的含有比〔(B)/(E)〕係0.5~10。 <38> A liquid skin cleanser containing the following ingredients (A), (B), (C), (D), (E) and (F): (A) contains lauric acid, myristic acid , palmitic acid, stearic acid, oleic acid salts of at least one fatty acid salt: 5 to 18% by mass, (B) containing alkyl sulfate ester salt, alkyl ether sulfate ester salt, and ether carboxylic acid or Anionic surfactants selected from at least one of its salts: 2.2 to 7% by mass; (C) containing sulfobeet

type surfactant and amide beet

Amphoteric surfactants selected from at least one type of surfactants: 0.2 to 4% by mass; (D) carbonates containing at least one selected from sodium carbonate, potassium carbonate, sodium bicarbonate, and potassium bicarbonate: 0.2 to 4% by mass; 7 mass %; (E) polyhydric alcohol: 0.1 ~ 10 mass %; (F) water, the mass ratio [(B)/(C)] of component (B) relative to component (C) is 1.7 ~ 4.2, component ( B) The content ratio [(B)/(E)] to the component (E) is 0.5-10.

型界面活性劑及醯胺甜菜

型界面活性劑中選擇至少1種的兩性界面活性劑：0.2~4質量%；(D)含有從碳酸鈉、碳酸鉀、碳酸氫鈉及碳酸氫鉀中選擇至少1種的碳酸鹽：0.2~7質量%；(E)多元醇：0.1~10質量%、(F)水，成分(B)相對於成分(C)的質量比例〔(B)/(C)〕係1.7~4.2，成分(B)相對於成分(E)的含有比〔(B)/(E)〕係0.5~10，成分(E)係含有二元的多元醇，且多元醇中二元多元醇係含有5質量%以上。 <39> A liquid skin cleanser containing the following ingredients (A), (B), (C), (D), (E) and (F): (A) contains lauric acid, myristic acid , palmitic acid, stearic acid, oleic acid salts of at least one fatty acid salt: 5 to 18% by mass, (B) containing alkyl sulfate ester salt, alkyl ether sulfate ester salt, and ether carboxylic acid or Anionic surfactants selected from at least one of its salts: 2.2 to 7% by mass; (C) containing sulfobeet

type surfactant and amide beet

Amphoteric surfactants selected from at least one type of surfactants: 0.2 to 4% by mass; (D) carbonates containing at least one selected from sodium carbonate, potassium carbonate, sodium bicarbonate, and potassium bicarbonate: 0.2 to 4% by mass; 7 mass %; (E) polyhydric alcohol: 0.1 ~ 10 mass %, (F) water, the mass ratio [(B)/(C)] of component (B) relative to component (C) is 1.7 ~ 4.2, component ( B) The content ratio [(B)/(E)] to the component (E) is 0.5 to 10, the component (E) is a divalent polyol, and the divalent polyol in the polyol contains 5% by mass above.

<40> A method of using a liquid skin cleanser, which is the method of using the liquid skin cleanser described in any one of the above <1> to <39>, which is applied to the skin and then rinsed with water.

<41> A method for producing a liquid skin cleanser, which is a method for producing a liquid skin cleanser as described in any one of the above <1> to <39>, comprising the following steps 1, 2, 3 and Step 4: (Step 1) The step of preheating the component (F) to 60~80°C; (Step 2) In the water heated in the step 1, the unneutralized substance of the component (A) and the neutralizing agent , mixing in such a way that the neutralization rate is 95 to 105%, to obtain a fatty acid salt-containing composition; (step 3) sequentially adding the fatty acid salt-containing composition obtained in step 2, and components (B), A step of mixing component (C), component (D), component (E), and other components as needed; (step 4) cooling the mixture obtained in step 3 to 20~35°C.

<42> A method for producing a liquid skin cleanser, which is a method for producing a liquid skin cleanser as described in any one of the above <1> to <39>, wherein a part of component (B) is an acidic component, and includes There are the following steps 1', 2', 3' and 4': (step 1') heating component (F) to 60~80°C in advance; (step 2') heating after step 1' Mix the unneutralized substance of component (A), the unneutralized substance of component (B), other acidic components, and neutralizer as needed so that the neutralization rate is 95~105% , and the step of obtaining the composition containing fatty acid salt; (step 3') sequentially adding the composition containing fatty acid salt obtained in step 2', the remaining component (B), and component (C), component (D) and The step of mixing component (E) and components other than other acidic components if necessary; (step 4') cooling the mixture obtained in step 3' to 20~35°C.

[Example] [Examples 1-39, Comparative Examples 1-13]

Manufacture the liquid skin cleansers with the compositions shown in Table 2 to Table 5, measure the viscosity and the viscosity when adding water, and evaluate the goodness of water fusion, foaming, cleaning power, stickiness when rinsing, and skin smoothness . The results are combined and recorded in Table 2~Table 5.

(Production method)

(Procedure 1) The component (F) is previously heated to 80 degreeC.

(Step 2) In the water heated in Step 1, the unneutralized substance of component (A), the unneutralized substance of component (B) (polyoxyethylene lauryl ether acetic acid), EDTA, and potassium hydroxide were mixed according to Mix them so that the neutralization rate is 95-105%, and obtain a fatty acid salt-containing composition.

(Step 3) Add the fatty acid salt-containing composition obtained in Step 2, and the remaining component (B) (polyoxyethylene sodium lauryl sulfate), component (C), component (D), component (E), Ingredient (G), Ingredient (H), Ingredient (I), and mixed.

(Step 4) The mixture obtained in Step 3 was cooled to 35°C.

(Step 5) To the mixture obtained in Step 4, add phenoxyethanol and perfume in order, and mix to obtain a liquid skin cleanser.

(Evaluation method) (1) Determination of viscosity:

About 50 g of each liquid skin cleanser is filled in a container (screw tube (with cap, gasket) transparent No. 7 50mL 35×78×20mm (manufactured by Maruemu Co., Ltd.)) in such a way that no air bubbles are generated, set at 30 After standing in a water bath at ℃ for about 1 hour and adjusting the temperature, measure the viscosity according to the measurement time of 1 minute. As a viscosity measuring machine, a B-type viscometer/VISCOMETER TVB-10M (manufactured by TOKI SANGYO CO., LTD.) was used.

First, measure according to the condition (i), and if the measured value is within the accuracy range and a stable measured value can be obtained, it is adopted as the measured value. However, if the measured value is outside the precision range, or if a stable measured value cannot be obtained because it is within the upper and lower limits of the precision range, the measurement is performed under the condition (ii). Repeat this operation to obtain a stable measurement value. In addition, the composition measurement time at each number of revolutions was set to 1 minute.

(i) No. M4: 6rpm

(ii) No. M4: 12rpm

(iii) No.M4: 30rpm

(iv) No.M3: 30rpm

(v) No.M2: 30rpm

(iv) No.M1: 30rpm

(2) Determination of viscosity when adding water:

Correctly measure 50 g of each liquid skin cleanser and put it into a 100 mL beaker, add 2 g of ion-exchanged water, and stir for 30 minutes so as not to generate air bubbles to adjust the sample.

Then, the viscosity was measured in the same manner as (1).

Furthermore, the ratio of the viscosity when water was added to the viscosity measured in (1) was obtained (viscosity when water was added/viscosity). If the value is below 1.0, it means that there is no viscosity increase when water is added.

(3) Good degree of water fusion:

3 professional reviewers took out 0.5g of each liquid skin cleanser and placed it in the palm of their hand, added 5g of water, and rubbed their hands together 10 times. According to the good degree of water fusion at this time, it was rated as very good according to the situation of water fusion. 5. If the water fusion is very poor, it will be rated as stage 1 to 5 for evaluation. The results are calculated as the average value of 3 examiners, and expressed according to the value rounded off at the first decimal place.

(4) Foaming:

3 professional reviewers take out 0.5g of each liquid skin cleanser and put it in the palm of the hand, add 5g of water, and rub the hands together 10 times. For the foaming at this time, set it to 5 or 10 according to the good foaming. The situation of poor foaming is rated as 1 out of 5 stages for evaluation. The results are calculated as the average value of 3 examiners, and expressed according to the value rounded off at the first decimal place.

(5) Cleaning power:

圓形，經30分鐘乾燥後，取各液體皮膚洗淨劑之2.5質量%水溶液1g，利用食指依畫圓的方式輕輕按摩10次，然後利用自來水充分沖洗。針對洗淨後的狀態，依完全沒有污垢的狀態評為5、污垢完全沒有掉落的狀態評為1之5階段進行評價。結果求取3位審查人員的平均值，依小數點第一位四捨五入的值表示。 20 μL of model acne (comedo) sebum (Table 1) colored by carbon black was applied on the forearm by 3 professional examiners to form a 3.5 cm

Round shape, after drying for 30 minutes, take 1g of 2.5% by mass aqueous solution of each liquid skin cleanser, massage gently 10 times in a circular motion with your index finger, and then rinse thoroughly with tap water. Regarding the state after washing, the state with no dirt at all was rated as 5, and the state with no dirt falling off was rated as 1 out of 5. The results are calculated as the average value of 3 examiners, and expressed according to the value rounded off at the first decimal place.

(6) Whether it is sticky or greasy when washing:

3 professional reviewers use 0.5g of each liquid skin cleanser to clean the forearm of one arm. Regarding whether there is stickiness during washing, the state of no stickiness is rated as 5, and the state of very sticky is rated as 1 5 stages of evaluation. The results are calculated as the average value of 3 examiners, and expressed according to the value rounded off at the first decimal place.

(7) Skin smoothness:

3 professional examiners use 0.5g of each liquid skin cleanser to wash the forearm of one arm, dry it with a towel for 1 minute, and evaluate the smoothness of the skin. The evaluation was performed on a scale of 5 for very smooth skin and 1 to 5 for very rough skin. The results are calculated as the average value of 3 examiners, and expressed according to the value rounded off at the first decimal place.

The liquid skin cleanser of the present invention has excellent effects on any of items such as inhibition of thickening when adding water, water fusion, foaming, cleansing power, skin smoothness, and stickiness during rinsing.

However, it is known from Comparative Examples 1 to 4 that by adding anionic surfactants other than fatty acid salts containing component (B), although the smoothness of the skin can be improved, the addition of water will cause viscosity increase, and the hydration is obvious reduce. On the other hand, it was found that Examples 7 to 11 containing component (E) polyhydric alcohol contained more component (B), but the thickening by adding water was still suppressed, and the hydration and skin smoothness were both good.

Furthermore, comparative examples 5 to 13, which lack the present invention as part of them, have water fusion, foaming, cleansing power, skin smoothness, and stickiness when rinsing compared with the liquid skin cleanser of the present invention. Any one of the items is significantly worse.

[Example 40, 41]

In the same manner as in Examples 1 to 39, the compositions shown in Table 6 and Table 7 were filled into bottle containers to prepare liquid skin cleansers.

The obtained liquid skin cleansers all have the characteristics of suppressed thickening when water is added, excellent water fusion, good foaming, excellent cleansing power, stickiness during rinsing is also suppressed, and the skin after washing is smooth.

Claims (13)

A liquid skin cleanser comprising the following components (A), (B), (C), (D), (E) and (F): (A) fatty acid salt: 5-18% by mass; (B ) at least one anionic surfactant selected from alkyl sulfate ester salts, alkyl ether sulfate salts, and alkyl ether carboxylates: 2.2 to 7% by mass; (C) sulfobeet

Type surfactant: 0.2~4% by mass; (D) carbonate: 0.2~7% by mass; (E) polyol: 0.1~10% by mass; (F) water, component (B) relative to component (C) The mass ratio (B)/(C) is 5/3~10. The liquid skin cleansing agent according to claim 1, wherein the mass ratio (B)/(E) of component (B) to component (E) is 0.5-10. Such as the liquid skin cleansing agent of Claim 1, wherein the mass ratio (B)/(C) of component (B) relative to component (C) is 1.7~6. The liquid skin cleansing agent as claimed in claim 1, wherein the component (B) is an alkyl sulfate ester salt represented by the following general formula (2), an alkyl ether sulfate represented by the following general formula (3), and At least one selected from the following general formula (4) of ether carboxylic acid or its salt; R ² OSO ₃ M ² ‧‧‧(2) (In formula (2), R ² represents carbon number 8~22 The aliphatic hydrocarbon group; M ² represents a cation selected from alkali metals, alkaline earth metals, ammonium, alkyl ammonium, alkanolammonium, and glucose ammonium (glucammonium); R ³ O(CH ₂ CH ₂ O) _n SO ₃ M ³ ‧‧‧( ³ ) (In formula (3), R ³ represents an aliphatic hydrocarbon group with 8 to 22 carbons; Alcohol ammonium, and ammonium glucosamine selected cations; n represents the average number of added moles, which is 0.5~20); R ⁴ O(CH ₂ CH ₂ O) _m CH ₂ COOM ⁴ ‧‧‧(4)(Formula In (4), R ⁴ represents an alkyl or alkenyl group with 10 to 22 carbons; m represents the average added molar number, which is a value of 0.5 to 10; M ⁴ represents a hydrogen atom, an alkali metal, or an alkaline earth group metal, ammonium or organic ammonium). The liquid skin cleansing agent as claimed in claim 1, wherein component (C) is lauryl hydroxysulfobeet

. The liquid skin cleansing agent according to claim 1, wherein component (E) contains a dihydric polyhydric alcohol. Such as the liquid skin cleansing agent of Claim 1, wherein the content of (F) water is 40-90% by mass. The liquid skin cleansing agent according to claim 1, which further contains (G) 0.01 to 1.5% by mass of a water-soluble polymer. The liquid skin cleansing agent as claimed in claim 8, wherein component (G) is obtained from acrylic acid-(meth)acrylic acid alkyl ester copolymer, cellulose with added hydroxyethyl or hydroxypropyl, high polymer polyethylene One or more selected from diols and cationic polymers. The liquid skin cleansing agent according to claim 8 or 9, wherein component (G) is a cationic polymer. A method of using a liquid skin cleanser is the method of using the liquid skin cleanser in Claim 1, which is to apply it to the skin and then rinse it with water. A method for producing a liquid skin cleanser, which is the method for producing a liquid skin cleanser according to claim 1, which includes the following steps 1, 2, 3 and 4: (step 1) pre-mixing component (F) The step of heating to 60~80°C; (Step 2) In the water heated in step 1, mix the unneutralized substance of component (A) and the neutralizing agent so that the neutralization rate is 95~105%, and obtain the composition containing fatty acid salt (step 3) sequentially add the fatty acid salt-containing composition obtained in step 2, component (B), component (C), component (D) and component (E), and other components as required, And carry out the step of mixing; (step 4) the step of cooling the mixture obtained in step 3 to 20~35°C. A method for producing a liquid skin cleanser is the method for producing a liquid skin cleanser according to claim 1, wherein a part of component (B) is an acidic component, and includes the following steps 1', 2', and 3 'and step 4': (step 1') the step of heating component (F) to 60~80°C in advance; (step 2') in the water heated by step 1', unneutralized component (A) The step of mixing the unneutralized material of component (B), other acidic components, and neutralizing agent as needed so that the neutralization rate is 95 to 105%, and obtaining a composition containing fatty acid salt; ( Step 3') sequentially add the fatty acid salt-containing composition obtained in step 2', the remaining component (B), component (C), component (D) and component (E), and other acidic components as needed Components, and the step of mixing; (step 4') the step of cooling the mixture obtained in step 3' to 20~35°C.