JP2006182729A - Aqueous hair shampoo - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair shampoo which has a good lathering property and a good smooth foam property, when used for washing hair, gives a smooth touch, when rinsed, gives gloss and collectability to finished hair, has good low temperature stability, and is low irritative. <P>SOLUTION: This aqueous hair shampoo comprises the ingredients (A) to (B). (A) 5 to 30 wt.% of a sulfate type surfactant represented by the general formula: R-O-(C<SB>2</SB>H<SB>4</SB>O)<SB>n</SB>-SO<SB>3</SB>M (R is an 8 to 18C alkyl or alkenyl; (n) is 0 or a positive integer; M is sodium or ammonium), and comprising 30 to 45 wt.% of (n)=0, 18 to 27 wt.% of (n)=1, 10 to 20 wt.% of (n)=2, and the remainder of (n)≥3, wherein the total amount of n=0 to 2 is ≥70 wt.% based on the total sulfates. (B) 0.01 to 3 wt.% of a water-soluble cationized polymer having a mol. wt. of 100,000 to 1,900,000 and a charge density of 0.6 to 4 meq/g. (C) 0.1 to 10 wt.% of a silicone oil represented by the general formula; R'(CH<SB>3</SB>)<SB>2</SB>SiO-[(CH<SB>3</SB>)<SB>2</SB>SiO]<SB>m</SB>-Si(CH<SB>3</SB>)<SB>2</SB>R' [R' is CH<SB>3</SB>or OH; (m) is 50 to 20,000] and having an average particle diameter of <50 μm as dispersed particles. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention includes a sulfate-type surfactant and a cationic polymer, has a good foaming and abundant foaming amount at the time of shampooing, and can impart excellent slipperiness and gloss to the hair at the time of foaming and rinsing The present invention relates to a hair cleaning agent.

  In recent years, shampoos have come to be desired not only for basic performances such as detergency, good foaming, abundant foam amount, but also foam slipping feeling when foaming, slipping feeling when rinsing, and no creaking. ing. Alkyl sulfates typified by sodium dodecyl sulfate have been most frequently used as cleaning components in aqueous cleaning agents because of their high detergency and large amount of foaming. However, when the alkyl sulfate was used alone, there was a great dissatisfaction with the feel at the time of washing such as a squeak. Therefore, a polyoxyethylene addition type alkyl sulfate (alkyl ether sulfate) in which ethylene oxide is added between an alkyl group and a sulfate group in order to improve the feeling, especially an average addition of 2 to 3 mol of ethylene oxide is washed. It has been used in shampoos because of the good feeling of time. However, by adding ethylene oxide to the alkyl sulfate, the squeaky feeling has been eliminated, but the inherent foaming speed is greatly inferior, and the good foaming and the absence of squeaking at the time of rinsing. It was difficult to achieve both.

  On the other hand, typical alkyl ether sulfates that have been used in the past are those with an average addition mole number of ethylene oxide of 2 and those with an addition mole number of 0 are around 20% by weight, and those with an addition mole number of 1 to 3 are more than a dozen. % By weight, the balance being 4 or more added moles. Therefore, as a method for improving foaming, adjusting the number of moles of ethylene oxide added has been performed. For example, Patent Document 1 discloses an alkyl ether sulfate having 5 to 50% by weight of a surfactant component containing an alkyl ether sulfate having 1 to 8 moles of ethylene oxide added and an amphoteric surfactant and having 1 mole or less of added moles. A highly conditioned shampoo composition containing less than 5% by weight of salt is described. However, neither foaming nor foam quality was satisfactory.

  Furthermore, recently, silicone oil has been blended as a means for improving the squeaky feeling and sliding feeling. However, blending an oily component such as silicone oil into the shampoo composition also deteriorated foaming and affected the decrease in the amount of foam, which was not satisfactory in terms of both foaming and foam quality.

Japanese National Patent Publication No. 11-507079

  Therefore, the present invention has good foaming and slippery foam quality at the time of shampooing, has a smooth feel at the time of rinsing, gives gloss to the finished hair, and has low stability at low temperatures. An object is to provide an aqueous hair cleanser that is irritating.

  In the polyoxyethylene addition type alkyl sulfate, the present inventors have a ratio of sulfate distributed on the side where the number of added moles of ethylene oxide is small, that is, the ratio of sulfates having 0 to 2 added moles within a certain range. When a sulfate component, a water-soluble cationized polymer having a molecular weight of 100,000 to 1,900,000 and a charge density of 0.6 to 4 meq / g and a silicone oil having a small particle diameter are used, a hair cleanser that satisfies the above requirements is obtained. I found out that

  That is, the present invention provides an aqueous hair cleanser containing the following components (A), (B) and (C).

(A) The following general formula (1)
R—O— (C ₂ H ₄ O) _n —SO ₃ M (1)
[Wherein, R represents a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms, n represents 0 or a positive integer, and M represents sodium or ammonium. ]
30 to 45% by weight of sulfate with n = 0, 18 to 27% by weight of sulfate with n = 1, 10 to 20% by weight with n = 2, and the balance is n = Sulphate type surfactant composed of 3 or more sulfates and n = 0 to 2 in total of 70% by weight or more of total sulfates 5 to 30% by weight

(B) 0.01 to 3% by weight of a water-soluble cationized polymer having a molecular weight of 100,000 to 1.9 million and a charge density of 0.6 to 4 meq / g

(C) Silicone oil represented by the following general formula (2) present as dispersed particles having an average particle size of less than 50 μm 0.1 to 10% by weight
R ′ (CH ₃ ) ₂ SiO — [(CH ₃ ) ₂ SiO] _m —Si (CH ₃ ) ₂ R ′ (2)
[Wherein, R ′ represents a methyl group or a hydroxy group, and m represents a number of 50 to 20,000. ]

  The hair cleanser of the present invention has good foaming and slippery foam quality at the time of shampooing, has a smooth feel at the time of rinsing, gives gloss to the finished hair, has good low temperature stability and low It is a stimulus.

The sulfate type surfactant of component (A) of the present invention is represented by the general formula (1)
R—O— (C ₂ H ₄ O) _n —SO ₃ M (1)
It is represented by In the present invention, the number of moles of ethylene oxide added has a specific distribution and contains a large amount of sulfate having a small number of moles of addition, that is, n = 0 is 30 to 45% by weight, and n = 1 is 18 to 27% by weight. , N = 2 is 10 to 20% by weight, and the remainder has a distribution composed of sulfates of n = 3 or more, and the total of sulfates of n = 0 to 2 is 70% by weight or more in the total sulfates It has good foam quality, foam amount, and feel by the sulfate type surfactant. Here, the sulfate-type surfactant having a distribution is preferably a sulfate having the same alkyl chain length and differing only in the number of added moles of ethylene oxide.

  Among these, from the viewpoint of achieving both quick foaming and good foam feel, the distribution of the number of moles of added ethylene oxide n is 33 to 43% by weight n = 0, 20 to 25% by weight n = 1, and n = 2. It is preferably composed of 13 to 18% by weight, and the balance is composed of sulfates with n = 3 or more, in particular, n = 0 is 35 to 41% by weight, n = 1 is 21 to 23% by weight, and n = 2 More preferably, the content is 14 to 17% by weight, and the remainder is composed of n = 3 or more sulfates. In addition, the ratio of sulfate of n = 0 to 2 in the sulfate type surfactant component is 70% by weight or more from the same viewpoint, but is 70 to 85% by weight of the total sulfate. It is preferable.

Such a sulfate-type surfactant is obtained by using, for example, an alcohol ethoxylate obtained by adding 0.85 to 1.35 times moles of ethylene oxide with respect to a higher alcohol ROH, using 0.95 to 1.0 equivalent of SO _3. After sulfated, it can be produced by neutralizing with sodium hydroxide or ammonia. Further, M in the general formula (1) is more preferably ammonium from the viewpoint of foam feeling.

  The content of the component (A) sulfate-type surfactant is 5 to 30% by weight in the aqueous hair cleansing agent of the present invention. Good foaming, abundant foam amount, and slippery foam when washing hair From the viewpoint of quality, 7 to 23% by weight, particularly 10 to 20% by weight is preferable.

  The component (B) cationized polymer of the present invention has a molecular weight of 100,000 to 1.9 million, a charge density of 0.6 to 4 meq / g, and is a water-soluble polymer. In particular, the molecular weight is preferably 200,000 to 1,800,000, particularly preferably 300,000 to 1,700,000, and the charge density is 0.6 to 3.8 meq / g, particularly 0.7 to It is preferably 3.5 meq / g. The charge density of the water-soluble cationized polymer can be measured, for example, by a colloid titration method using potassium polyvinyl sulfate as a titration solution.

  Specific examples of water-soluble cationized polymers include cationized cellulose derivatives, cationic starch, cationized guar gum derivatives, diallyl quaternary ammonium salts / acrylamide copolymers, quaternized polyvinylpyrrolidone derivatives, polyglycol polyamine condensates, vinyl Imidazolium trichloride / vinyl pyrrolidone copolymer, hydroxyethyl cellulose / dimethyl diallylammonium chloride copolymer, vinyl pyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, polyvinyl pyrrolidone / alkyl amino acrylate copolymer, polyvinyl pyrrolidone / alkyl Amino acrylate / vinyl caprolactam copolymer, vinyl pyrrolidone / methacrylamidopropyl trimethyl ammonium chloride copolymer, alkyl acetate Luamide / acrylate / alkylaminoalkylacrylamide / polyethylene glycol methacrylate copolymer, adipic acid / dimethylaminohydroxypropylethylenetriamine copolymer (Sandos Corp., Cartaletin), JP-A-53-139734, JP-A-60- Examples thereof include cationic polymers described in Japanese Patent No. 36407, and cationized cellulose derivatives, cationized guar gum derivatives, and diallyl quaternary ammonium salts / acrylamide copolymers are particularly preferable.

  Further, for example, Marquat 550 (ONDEO-NALCO, copolymer of acrylamide and diallyldimethylammonium salt; CTFA name polyquaternium-7), rubiquat FC370 (BASF, 1-vinyl-2-pyrrolidone and 1-vinyl- Copolymer of 3-methylimidazolium salt; CTFA name polyquaternium-16), Gafquat 755N (ISP, copolymer of 1-vinyl-2-pyrrolidone and dimethylaminoethyl methacrylate; CTFA name polyquaternium-11 ), Ucare Polymer JR and LR series (Amercol, salt of reaction product of trimethylammonium substituted epoxide and hydroxyethyl cellulose; CTFA name Polyquaternium-10), Poise C-60H, Poise C-80M, Poise C-150L (Kao Corporation, salt of reaction product of trimethylammonium substituted epoxide and hydroxyethyl cellulose; CTFA name polyquaternium-10) Jaguar series (Rhodia, guar hydroxypropyltrimonium chloride) may be commercially available, such as.

  Component (B) may be used alone or in combination of two or more, and the content thereof is 0.01 to 3% by weight of the cleaning composition of the present invention. From the point of smoothness, 0.05 to 2% by weight is preferable, and 0.1 to 1% by weight is particularly preferable.

  The silicone oil represented by the general formula (2) existing as dispersed particles having an average particle size of less than 50 μm, which is the component (C) of the present invention, is substantially water-insoluble and non-volatile. In particular, a water-insoluble highly polymerized dimethylpolysiloxane emulsion obtained by emulsion polymerization is preferred.

  The average particle size of the dispersed particles of silicone of component (C) is less than 50 μm, preferably 4 μm or less, particularly 3 μm or less, and more preferably 2 μm or less. The average particle size is preferably 0.1 μm or more from the viewpoint of the feeling of use and the conditioning effect.

  Examples of such silicone oil include “Silicone CF2450” from Toray Dow Corning Co., Ltd., which contains 60% by weight of dimethylpolysiloxane oil of formula (2) where m is 300 to 6500 and has an average particle size of 0.5 μm. Commercially available silicone emulsions can be used.

  The silicone oil having a small particle size such as component (C) is considered to be 0.01 to 10% by weight in the aqueous hair cleansing agent of the present invention from the viewpoint of foam feeling at the time of hair washing, feel after drying and improvement of gloss. Is preferably 0.05 to 6% by weight, more preferably 0.5 to 3% by weight, especially 1 to 2% by weight.

  In order to further improve the cleaning performance, the aqueous hair cleansing agent of the present invention may contain a nonionic surfactant or an amphoteric surfactant.

Nonionic surfactants include polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene sorbite fatty acid esters, polyoxyalkylene glycerin fatty acid esters, polyoxyalkylene fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene alkyl. Phenyl ethers, polyoxyalkylene (hardened) castor oils, sucrose fatty acid esters, polyglycerin alkyl ethers, polyglycerin fatty acid esters, fatty acid alkanolamides, alkyl glycosides, monoalkyl glyceryl ethers, monoalkenyl glyceryl ethers And the like. Of these, alkylglycosides, polyoxyalkylene (C ₈ -C ₂₀ ) fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, fatty acid alkanolamides, monoalkyl glyceryl ethers and monoalkenyl glyceryl ethers are preferred.

  The fatty acid alkanolamide may be either a monoalkanolamide or a dialkanolamide, and preferably has an acyl group having 8 to 18 carbon atoms, particularly 10 to 16 carbon atoms. In particular, those having a hydroxyalkyl group having 2 to 3 carbon atoms are preferred, such as oleic acid diethanolamide, palm kernel oil fatty acid diethanolamide, coconut oil fatty acid diethanolamide, lauric acid diethanolamide, polyoxyethylene coconut oil fatty acid monoethanolamide. Coconut oil fatty acid monoethanolamide, lauric acid isopropanolamide, lauric acid monoethanolamide, and the like.

  Of the monoalkyl glyceryl ethers and monoalkenyl glyceryl ethers, monoalkyl glyceryl ethers are preferable, and the alkyl group is preferably a linear or branched alkyl group having 4 to 10 carbon atoms, particularly 8 to 10 carbon atoms. Specifically, n-butyl group, isobutyl group, n-pentyl group, 2-methylbutyl group, isopentyl group, n-hexyl group, isohexyl group, n-heptyl group, n-octyl group, 2-ethylhexyl group, n -Decyl group, isodecyl group and the like can be mentioned, and 2-ethylhexyl group and isodecyl group are particularly preferable.

  Examples of amphoteric surfactants include betaine surfactants. Of these, betaine surfactants such as alkyldimethylaminoacetic acid betaine, fatty acid amidopropyl betaine, and alkylhydroxysulfobetaine are more preferred, and fatty acid amidopropyl betaine is particularly preferred. The fatty acid amidopropyl betaine is preferably one having an acyl group having 8 to 18 carbon atoms, particularly 10 to 16 carbon atoms, and in particular, lauric acid amidopropyl betaine, palm kernel oil fatty acid amidopropyl betaine, coconut oil fatty acid amidopropyl betaine and the like. preferable.

  These nonionic or amphoteric surfactants can be used alone or in combination of two or more in the aqueous hair cleanser. In particular, when the aqueous hair cleanser of the present invention is in the form of an aqueous liquid cleanser, the use of fatty acid alkanolamides or fatty acid amidopropyl betaines as surfactants other than component (A) is more foaming. It is particularly preferable because it not only becomes good, but an appropriate liquid property is obtained.

  The content of the nonionic or amphoteric surfactant is preferably 0.1 to 10% by weight, more preferably 0.5 to 8% by weight, and particularly 1 to 6% by weight in the hair cleansing agent of the present invention. Is preferable.

  In the present invention, one or more anionic surfactants other than sulfate type surfactants may be further contained. Examples of such surfactants include those of sulfonate type surfactants and carboxylate type surfactants, such as sulfosuccinic acid alkyl ester salts, polyoxyalkylene sulfosuccinic acid alkyl ester salts, higher fatty acid salts, alkanes. Examples thereof include sulfonates, alkyl ether carboxylic acids or salts thereof.

  Furthermore, in order to improve the finish after drying, the aqueous hair cleansing agent of the present invention may further contain conditioning components such as silicones and cationic surfactants other than component (C).

  Examples of silicones include the following.

(1) Dimethylpolysiloxane As dimethylpolysiloxane other than component (C), volatile dimethylpolysiloxane and low-viscosity liquid non-volatile dimethylpolysiloxane can be used in combination. Commercially available products include SH200 (Toray Dow Corning Silicone), KF96 (Shin-Etsu Chemical), and the like.

(2) Amino-modified silicone Various amino-modified silicones can be used, but are described in the 3rd edition of the CTFA dictionary (US, Cosmetic Ingredient Dictionary) under the name of Amodimethicone, particularly having an average molecular weight of about 3000 to 100,000. Is preferred. This amino-modified silicone is preferably used as an aqueous emulsion. Examples of commercially available products include SM 8704C (Toray Dow Corning Silicone), DC 929 (Dow Corning), KT 1989 (GE Toshiba). It is done.

(3) Other silicones Other than the above, polyether-modified silicone, methylphenylpolysiloxane, fatty acid-modified silicone, alcohol-modified silicone, alkoxy-modified silicone, epoxy-modified silicone, fluorine-modified silicone, cyclic silicone, alkyl-modified silicone, etc. It is done.

  Examples of the cationic surfactant include alkyltrimethylammonium salts, alkoxytrimethylammonium salts, dialkyldimethylammonium salts, alkyldimethylamines and salts thereof, alkoxydimethylamines and salts thereof, alkylamidodimethylamines and salts thereof, and the like.

(i) Alkyltrimethylammonium salt Examples include those represented by the following general formula.
R ¹¹ −N ⁺ (Me) ₃ X ⁻
[Wherein R ¹¹ represents an alkyl group having 12 to 22 carbon atoms, Me represents a methyl group, and X ⁻ represents a halogen (chlorine or bromine) ion or an alkyl sulfate ion having 1 to 2 carbon atoms. ]

(ii) Alkoxytrimethylammonium salt Examples include those represented by the following general formula.
R ¹² —O—R ¹³ —N ⁺ (Me) ₃ X ⁻
[Wherein R ¹² represents an alkyl group having 12 to 22 carbon atoms, R ¹³ represents an ethylene group or a propylene group, Me represents a methyl group, and X ⁻ is the same as described above. ]

(iii) Dialkyldimethylammonium salt Examples include those represented by the following general formula.
R ¹⁴ ₂ −N ⁺ (Me) ₂ X ⁻
[Wherein, R ¹⁴ represents an alkyl group having 12 to 22 carbon atoms or a benzyl group, Me represents a methyl group, and X ⁻ is the same as above. ]

(iv) Alkyldimethylamine and its salt Examples thereof include those represented by the following general formula.
R ¹⁵ -N (Me) ₂
[Wherein, R ¹⁵ represents an alkyl group having 12 to 22 carbon atoms, and Me represents a methyl group. ]

(v) Alkoxydimethylamine and salts thereof Examples thereof include those represented by the following general formula.
R ¹⁶ —O—R ¹⁷ —N (Me) ₂
[Wherein R ¹⁶ represents an alkyl group having 12 to 22 carbon atoms, R ¹⁷ represents an ethylene group or a propylene group, and Me represents a methyl group]

(vi) Alkylamidodimethylamine and salts thereof Examples thereof include those represented by the following general formula.
R ¹⁸ —C (═O) NH—R ¹⁹ —N (Me) ₂
[Wherein, R ¹⁸ represents an alkyl group having 11 to 21 carbon atoms, R ¹⁹ represents an ethylene group or a propylene group, and Me represents a methyl group. ]

Examples of cationic surfactants other than the above (i) to (vi) include ethyl lanolin sulfate fatty acid aminopropylethyldimethylammonium (alkanoylaminopropyl dimethylethylammonium ethyl sulfate, alkanoyl group derived from lanolin), ethyl sulfate lanolin fatty acid aminoethyl triethylammonium, ethyl lanolin fatty acid aminopropyl triethylammonium sulfate, methyl sulfate lanolin fatty acid aminoethyl trimethylammonium methyl sulfate lanolin fatty acid aminopropyl ethyl dimethyl ammonium ethyl sulfate isoalkanes acid (C ₁₄ ~C ₂₀₎ aminopropyl dimethylammonium, ethyl sulfate isoalkanes acid (C ₁₈ ~C ₂₂₎ aminopropyl dimethylammonium, Aminopuro ethylsulfate isostearate Le dimethylammonium, ethyl sulfate isononanoate aminopropyl dimethylammonium or alkyltrimethylammonium saccharin.

  Two or more cationic surfactants may be used in combination, and from the viewpoint of smoothness from the time of shampooing to the time of rinsing, the content is preferably 0.01 to 10% by weight in the aqueous hair cleaning agent of the present invention. Further, 0.05 to 6% by weight, particularly 0.3 to 3% by weight, particularly 0.5 to 2% by weight is preferable.

  Moreover, an oil agent can be contained as another conditioning agent. Oils include hydrocarbons such as squalene, squalane, liquid paraffin, liquid isoparaffin, cycloparaffin; glycerides such as castor oil, cacao oil, mink oil, avocado oil, olive oil; beeswax, whale wax, lanolin, carnauba wax, etc. Waxes: Esters such as isopropyl palmitate, isopropyl myristate, octyldodecyl myristate, hexyl laurate, cetyl lactate, propylene glycol monostearate, oleyl oleate, hexadecyl 2-ethylhexanoate, isononyl isononanoate, tridecyl isononanoate Higher fatty acids such as capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, coconut oil fatty acid, isostearyl acid, isopalmitic acid; myristyl al Lumpur, cetyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, 2-octyldodecanol, higher alcohols such as cetostearyl alcohol, other isostearyl glyceryl ether, polyoxypropylene butyl ether. Of these, higher alcohols are preferable, and myristyl alcohol, cetyl alcohol, and stearyl alcohol are particularly preferable. These oil agents can be used alone or in combination of two or more, and the content thereof is preferably 0.2 to 2% by weight of the aqueous hair cleansing agent of the present invention, more preferably 0.3 to 1.8% by weight, 0.5 to 1.5% by weight is preferred.

  Further, a pearling agent containing ethylene glycol monoalkyl ester or ethylene glycol dialkyl ester can be contained in order to improve the texture and stability of the cleaning agent. Examples of the ethylene glycol monoalkyl ester include ethylene glycol monostearyl ester and ethylene glycol monobehenyl ester. Examples of the ethylene glycol dialkyl ester include ethylene glycol distearyl ester and ethylene glycol dibehenyl ester. Two or more of these may be used in combination, and the content thereof is preferably 0.5 to 8% by weight, more preferably 0.7 to 5% by weight, particularly 1 to 3% by weight in the aqueous hair cleansing agent of the present invention. preferable. From the viewpoint of improving the stability of the cleaning agent, the weight ratio (pearling agent / sulfate type surfactant) of the pearlizing agent and sulfate type surfactant in the hair cleaning agent of the present invention is 1 / 10 to 2/5 is preferable, 1/7 to 3/10, more preferably 1/6 to 1/4.

  The aqueous hair cleansing agent of the present invention may contain a viscosity modifier, and as the viscosity modifier, hydroxyethyl cellulose, methyl cellulose, polyethylene glycol, polypropylene glycol, ethylene glycol, propylene glycol, isoprene glycol, ethanol, benzyl alcohol Benzyloxyethanol, phenoxyethanol, clay minerals, salts (sodium chloride, ammonium chloride, sodium citrate, etc.) and the like. Among them, salts, particularly sodium chloride and sodium citrate are preferred. Two or more types of viscosity modifiers may be used in combination, and the amount used thereof is preferably 0.01 to 5% by weight in the aqueous hair cleansing agent of the present invention in terms of the amount of foam and foam quality, and more preferably 0.05 to 3% by weight, particularly 0.1 to 1.5% by weight is preferred.

  In addition to the above-described components, the aqueous hair cleansing agent of the present invention can be appropriately blended with components used in ordinary hair cleansing agents depending on the purpose. Such components include, for example, anti-dandruff agents; vitamin agents; bactericides; anti-inflammatory agents; antiseptics; chelating agents; moisturizers such as sorbitol, panthenol and glycerin; colorants such as dyes and pigments; Solvent extract, protein obtained from shell or pearl with pearl layer or hydrolyzate thereof, protein obtained from silk or hydrolyzate thereof, protein-containing extract obtained from legume seeds, ginseng extract, rice Germ extract, Hibamata extract, aloe extract, moon peach leaf extract, chlorella extract, etc .; Pearling agent such as titanium oxide; Fragrance; Dye; Ultraviolet absorber; Antioxidant; Other encyclopedia Ingredients described in OF shampooing Ingredients (ENCYCLOPEDIA OF SHAMPOO INGREDIENTS (MICELLE PRESS)).

  The aqueous hair cleanser of the present invention preferably has a pH (diluted 20 times by weight with water, 25 ° C.) of 2 to 6 when applied to hair, from the viewpoint of improving the gloss and unity of the hair, The pH is preferably 3 to 5, particularly preferably pH 3.5 to 4.5. As the pH adjuster, it is preferable to use an organic acid, particularly α-hydroxy acid, and specifically, malic acid, citric acid, lactic acid, and glycolic acid are preferable. Two or more of these organic acids may be used in combination, and the amount used is 0.01 to 5% by weight in the aqueous hair cleanser of the present invention in terms of foam quality and improvement in hair flexibility during hair washing. More preferably, it is 0.1 to 3% by weight, particularly 0.3 to 2% by weight. Further, as other pH adjusting agent, a base such as sodium hydroxide, potassium hydroxide, ammonium chloride may be used in combination with these organic acids.

  The form of the aqueous hair cleansing agent of the present invention can be appropriately selected from liquid form and gel form, but a liquid form using water or a lower alcohol, particularly water, as a solvent is preferable.

Production Example 1: Production of ammonium lauryl ether sulfate having an average addition mole number of 1.0 EO Charcoal 2470 (Kao Corporation, dodecyl alcohol: tetradecyl alcohol = about 3: 1) 2000 g and potassium hydroxide 1.45 g were charged into a pressure-resistant sealed reactor, After dehydration at 110 ° C. and 10 mmHg for 30 minutes, the system was heated to 165 ° C. After the temperature increase, 456 g of ethylene oxide was injected and the addition reaction was performed at that temperature for 30 minutes. Then, it cooled to 80 degreeC and neutralized with 1.3 g of acetic acid, and the ethylene oxide addition product of the said raw material alcohol was obtained.
Next, 1793 g of the mixture obtained by the above operation and 607 g of sulfuric acid gas were used for sulfation reaction at 40 ° C. After the reaction, neutralization was performed with 150 g of 28 wt% aqueous ammonia and 600 g of ion exchange water. Further, the concentration and pH were adjusted using 28 wt% aqueous ammonia and ion-exchanged water to obtain 10000 g of sulfate 1 (25 wt% aqueous solution) shown in Table 1.
The obtained sulfate was confirmed to be sulfate, anion and EO chain in accordance with cosmetic raw material standards, and the composition ratio was measured by gas chromatography and shown in Table 1.

Production Example 2: Production of ammonium lauryl ether sulfate having an EO average addition mole number of 1.3 According to Production Example 1 except that the reaction ratio of the raw materials was changed, sulfate 2 (25% by weight aqueous solution) shown in Table 1 was obtained.
The obtained sulfate was confirmed to be sulfate, anion and EO chain according to the cosmetic raw material standards, and the composition ratio was measured by gas chromatography and shown in Table 1.

Production Example 3: Production of sodium lauryl ether sulfate having an EO average addition mole number of 1.0 Using 1793 g of the ethylene oxide adduct of the raw material alcohol obtained in Production Example 1 and 607 g of sulfuric acid gas, a sulfation reaction was carried out at 40 ° C. After the reaction, neutralization was performed with 132 g of a 23 wt% sodium hydroxide aqueous solution and 556 g of ion-exchanged water. Further, the concentration and pH were adjusted using 23 wt% sodium hydroxide aqueous solution, 75 wt% phosphoric acid and ion-exchanged water, and 10000 g of sulfate 3 (25 wt% aqueous solution) shown in Table 1 was obtained.
The obtained sulfate was confirmed to be sodium salt, sulfate, anion and EO chain in accordance with cosmetic raw material standards, and the composition ratio was measured by gas chromatography and shown in Table 1.

* 1: Comparative sulfate 1
EMAL 227-PH11 (sodium lauryl ether sulfate with an average added mole number of EO of 2.0), which is a 27% by weight aqueous solution of sulfate.
* 2: Comparative sulfate 2
A mixture of sodium lauryl ether sulfate and sodium lauryl sulfate with an average EO addition mole number of 2.0.
Eomaru 227-PH11 (1000 g) from Kao Corporation and Emar 2F-HP (500 g) were mixed to obtain a 27 wt% aqueous solution of sulfate.

Examples 1-7 and Comparative Examples 1-3
Using the sulfate type surfactants shown in Table 1, hair cleaning agents shown in Table 2 were prepared, and the speed of foaming, the feeling of slipping during hair washing, the gloss of hair after drying, and the texture were evaluated. The pH is a value at 25 ° C. diluted 20 times by weight with water.

(Speed of foaming)
According to the apparatus and conditions described in [0053] and [0054] of JP-A-10-73584, the amount of foaming is measured with an evaluation sample of 1.5 mL and model sebum of 0.3 mL, and depending on the time until the amount of foam reaches 25 mL evaluated.

・ Evaluation criteria ◎: Less than 100 seconds ○: More than 100 and less than 200 seconds △: More than 200 and less than 300 seconds ×: More than 300 seconds

(Slip feeling when washing and rinsing)
A human hair bundle having a length of 25 cm, a width of 5.5 cm, and a weight of 10 g was lightly rinsed with warm water at 40 ° C., and then excess water was removed and foamed sufficiently for about 30 seconds using 0.5 g of a hair cleaning agent. Sensory evaluation of the feeling of slipping of the bristles with bubbles was performed, followed by sensory evaluation of the feeling of slipping while rinsing the hair bundles with 40 ° C hot water. The evaluation was performed by five people, and the total value of the evaluation was shown.

・ Evaluation criteria 4: Slip well 3: Slightly slip 2: Not slippery 1: Not slippery

(Glossy and unity after drying)
The hair bundle treated in the same manner as the slip evaluation was rinsed with running water (2 L / min) at 40 ° C. for 30 seconds, and then the moisture was sufficiently wiped off with a towel and air-dried. After drying, the gloss and unity were evaluated visually. The evaluation was performed by five people, and the total value of the evaluation was shown.

・ Evaluation criteria 4: Good 3: Somewhat good 2: Not very good 1: Not good

* 3: Molecular weight is 900,000 and cation charge density is 1.2 meq / g
* 4: Molecular weight is 1.5 million and cation charge density is 3.1 meq / g
* 5: Molecular weight 2 million, cationic charge density 0.8 meq / g
* 6: Molecular weight 50,000, cation charge density 6.2meq / g
* 7: General formula (2), m = 300-6500, average particle size 0.5μm 60 wt%

Example 8 Pearl Appearance Shampoo
(weight%)
Sulfate 3 of Production Example 3 (sodium salt, 25% by weight aqueous solution) 48.0
Sodium cocoamphoacetate 0.5
Cocoyl monoethanolamide 0.3
Polyoxyethylene (14) lauryl ether 1.0
Ethylene glycol distearate 2.0
Cationized hydroxyethyl cellulose ^{* 8} 0.4
Highly polymerized methylpolysiloxane emulsion ^{* 7} 1.5
Panthenol 0.05
Silk extract 0.05
Sodium chloride 1.0
Amount of lactic acid to become pH 6.0 Ion-exchanged water Remaining * 8: Polymer JR-400, Amerchol (molecular weight is 400,000, cation charge density is 1.2 meq / g)

Example 9 Conditioning Shampoo
(weight%)
Sulfate 1 of Production Example 1 (ammonium salt, 25% by weight aqueous solution) 52.0
Isodecyl glyceryl ether 0.7
Laurylamidopropylbetaine 2.0
Cocoyl monoethanolamide 0.5
Myristyl alcohol 1.5
Polyoxyethylene (16) lauryl ether 1.0
Ethylene glycol distearate 2.0
Cationized hydroxyethyl cellulose ^{* 9} 0.5
Diallyl quaternary ammonium salt / acrylamide copolymer ^{* 4} 0.2
Amino-modified silicone (SM 8704C, Toray Dow Corning) 0.8
Highly polymerized methylpolysiloxane emulsion ^{* 7} 2.0
Benzyl alcohol 0.4
Polypropylene glycol (Mw = 400) 0.2
Sodium chloride 1.0
Hydrolyzed conchiolin solution (dry weight 3% by weight) 0.05
Panax ginseng extract (dry weight 3%) 0.05
Soybean extract (0.4% dry matter) 0.05
Eucalyptus extract (dry weight 0.2% by weight) 0.05
Rice germ oil 0.05
Malic acid 0.5
Sodium hydroxide pH 3.9 Amount of ion-exchanged water Remaining * 9: Poise C-80M, Kao Corporation (molecular weight 800,000, cation charge density 1.1 meq / g)

Example 10 Conditioning Shampoo
(weight%)
Sulfate 1 of Production Example 1 (ammonium salt, 25% by weight aqueous solution) 48.0
2-Ethylhexyl glyceryl ether 0.3
Cocoyl monoethanolamide 0.5
Myristyl alcohol 1.0
Cetanol 0.5
Ethylene glycol distearate 3.0
Cationized hydroxyethyl cellulose ^{* 3} 0.2
Cationized guar gum ^{* 10} 0.3
Glycerin 1.0
Highly polymerized methylpolysiloxane emulsion ^{* 7} 1.0
Sodium chloride 0.2
Benzyloxyethanol 0.5
Malic acid 0.7
Lactic acid pH 3.7 Amount of ion-exchanged water Remaining amount * 10: Jaguar C-13S, Rhodia (molecular weight is 300,000, cation charge density is 1.4 meq / g)

Example 11 Conditioning Shampoo
(weight%)
Sulfate 2 of Production Example 2 (ammonium salt, 25% by weight aqueous solution) 40.0
Laurylamidopropylbetaine 3.0
Polyoxyethylene (16) lauryl ether 2.0
Stearoxypropyldimethylamine malate 0.5
Ethylene glycol distearate 2.0
Cationized guar gum ^{* 10} 0.3
Polypropylene glycol (Mw = 400) 0.5
Highly polymerized methylpolysiloxane emulsion ^{* 7} 1.0
Sodium chloride 1.0
Malic acid 0.8
Glycolic acid 0.75
Sodium hydroxide pH 3.5 Amount of ion-exchanged water remaining

Example 12 Pearl Appearance Anti Dandruff Shampoo
(weight%)
Sulfate 1 of Production Example 1 (ammonium salt, 25% by weight aqueous solution) 52.0
Isodecyl glyceryl ether 1.5
Cocoylamidopropylbetaine 1.0
Lauryl hydroxysulfobetaine 1.0
Lauric acid 0.5
Oleic acid 0.7
Distearyl ether 2.0
Cocoyl benzalkonium chloride 0.5
Cationized hydroxyethyl cellulose ^{* 8} 0.4
Ethanol 0.5
Highly polymerized methylpolysiloxane emulsion ^{* 7} 2.0
Hibamata extract 0.05
Malic acid 0.7
Sodium hydroxide pH 5.5 Amount of ion-exchanged water Remaining

  The shampoos of Examples 8 to 12 had quick foaming, good foam sliding, and good slidability, and had good gloss and cohesiveness in the finished hair.

Claims (5)

An aqueous hair cleanser containing the following components (A), (B) and (C).
(A) The following general formula (1)
R—O— (C ₂ H ₄ O) _n —SO ₃ M (1)
[Wherein, R represents a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms, n represents 0 or a positive integer, and M represents sodium or ammonium. ]
Wherein n = 0 sulfate 30-45 wt%, n = 1 sulfate 18-27 wt%, n = 2 sulfate 10-20 wt%, and the balance is n = Sulphate type surfactant composed of 3 or more sulfates and n = 0 to 2 in total of 70% by weight or more of total sulfates 5 to 30% by weight
(B) Water-soluble cationized polymer having a molecular weight of 100,000 to 1.9 million and a charge density of 0.6 to 4 meq / g 0.01 to 3% by weight
(C) Silicone oil represented by the following general formula (2) present as dispersed particles having an average particle size of less than 50 μm 0.1 to 10% by weight
R ′ (CH ₃ ) ₂ SiO — [(CH ₃ ) ₂ SiO] _m —Si (CH ₃ ) ₂ R ′ (2)
[Wherein, R ′ represents a methyl group or a hydroxy group, and m represents a number of 50 to 20,000. ]   The aqueous hair cleanser according to claim 1, further comprising a nonionic surfactant or an amphoteric surfactant.   Furthermore, the aqueous hair cleansing agent of Claim 1 or 2 containing silicones other than a component (C).   The aqueous hair cleanser according to any one of claims 1 to 3, further comprising a pearling agent containing ethylene glycol monoalkyl ester or ethylene glycol dialkyl ester.   Furthermore, the aqueous hair cleaning agent in any one of Claims 1-4 containing a higher alcohol.