JP2012111701A - Carboxyethylcellulose-containing shampoo - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shampoo having the foam quality with a good slide on shampooing, having a not sticky and a smooth touch feeling on rinsing and also giving settlement and a slide feeling for finished hair.SOLUTION: This shampoo is provided by having the contents of following components (A), (B) and (C) by 0.01 to 80 wt.%, 5 to 30 wt.% and 0.02 to 5 wt.% respectively: (A) a carboxyethylcellulose; (B) a sulfate salt type surfactant; and (C) a cationic polymer.

Description

  The present invention relates to a hair cleansing agent that has a good foam quality at the time of shampooing, a smooth feel at the time of rinsing, and that gives the finished hair a cohesive and slippery feel.

  In order to improve the texture and slipperiness of foam, reduce the squeaky feeling during washing, and give the hair a conditioning effect such as smoothness during drying, the hair cleaners are made of cellulose ethers and polyacrylic acid. A water-soluble cationic polymer such as a series compound is blended as a thickener. However, such a water-soluble cationic polymer has a rheological specification that the viscosity decreases at a high temperature, so that a sufficient viscosity cannot be obtained when used in a high-temperature environment such as in a bathroom. In addition, the water-soluble cationic polymer forms a coacervate with an anionic surfactant at the time of dilution of the system and expresses slipping property at the time of rinsing, but has not yet achieved sufficient conditioning performance due to its rheological characteristics.

  On the other hand, polyoxyalkylenated polysaccharide derivatives are used as thickeners and stabilizers for hydrophobic substances in toiletry products (see Patent Documents 1 and 2). However, polyoxyalkylenated polysaccharide derivatives have not been able to impart conditioning effects such as slidability during rinsing to hair cleansing agents.

International Publication No. 00/73351 Pamphlet JP 2003-226612 A

  An object of the present invention is to provide a hair cleansing agent that has a foam quality that is slippery when shampooed, has a smooth feel that does not feel sticky when rinsed, and that gives a smooth and smooth feeling to the finished hair.

  The present inventors have found that the above-mentioned problems can be solved by using carboxyethyl cellulose in a hair cleanser containing a sulfate type surfactant and a cationic polymer.

That is, the present invention provides the following inventions.
(1) A hair cleanser wherein the contents of the following components (A), (B) and (C) are 0.01 to 80% by weight, 5 to 30% by weight and 0.02 to 5% by weight, respectively.
(A) Carboxyethyl cellulose (B) Sulfate type surfactant (C) Cationic polymer (2) Component (A) has a substitution degree of carboxyl ethyl group of 0.2 to 2.8, substitution degree of carbamoyl ethyl group The hair cleansing agent according to 1 above, which is carboxyethyl cellulose having a polymerization degree of 0.04 or less and a polymerization degree of 2 to 3000.
(3) The component (B) is a sulfate represented by the following general formula (1), wherein a = 0 is 30 to 45% by weight, and a = 1 is 17 to 27% by weight. Wherein a = 2, 10-20% by weight and the balance is a = 3 or more, and the sum of a = 0-2 is 70% by weight or more of the total sulfate. Or the hair washing agent of 2 items | terms.
_{R4-O- (C 2 H 4} O) a -SO 3 M (1)
(In the formula, R4 represents a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms, a represents 0 or a positive integer, M represents an alkali metal, an alkaline earth metal, ammonium, or an alkanolamine. Or a basic amino group.)
(4) The hair cleaning agent according to any one of the above items 1 to 3, wherein the pH at 25 ° C when diluted 20 times by weight with water is 2 to 5.

  The hair cleansing agent of the present invention has a non-sticky and slippery foam quality at the time of shampooing, has a smooth feel at the time of rinsing, and gives a smooth and slippery feeling to the finished hair.

  The component (A) carboxylethylcellulose used in the present invention has a slippery foam quality at the time of shampooing, has a non-sticky and smooth feel when rinsed, and gives physical properties such as cohesion and slipperiness to the finished hair. For this purpose, it is important that the total composition contains 0.01 to 80% by weight. Preferably it contains 0.05 to 5 weight%, More preferably, it contains 0.1 to 3 weight%.

  The carboxyl ethyl cellulose used in the present invention preferably has a carboxyl ethyl group substitution degree of 0.2 to 2.8. When the substitution degree of the carboxylethyl group is less than 0.2, the carboxylethylcellulose does not exhibit water solubility. On the other hand, when the degree of substitution of the carboxyethyl group exceeds 2.8, the transparency of the aqueous solution is remarkably lowered and a sticky feeling is generated. From the viewpoint of water solubility and the transparency of the aqueous solution, the degree of substitution of the carboxyethyl group is preferably 0.3 to 2.7, and most preferably 0.4 to 2.5. In the carboxyl ethyl cellulose of the present invention, the degree of substitution of the carbamoylethyl group is preferably 0.04 or less. If the carbamoylethyl group exceeds 0.04, it will turn yellow during storage in the state of a cleaning agent. Preferably, the degree of substitution of the carbamoylethyl group is 0.03 or less, more preferably the degree of substitution of the carbamoylethyl group is 0.01 or less.

  The degree of polymerization of carboxyethyl cellulose used in the present invention is preferably 2 to 3000 in order to develop a viscosity as a hair cleaning agent. More preferably, it is 200-2500, Most preferably, it is 300-2000.

  The component (B) sulfate-type surfactant used in the present invention needs to be contained in an amount of 5 to 30% by weight in the whole composition from the viewpoint of hair detergency. Preferably it contains 7 to 23% by weight, more preferably 10 to 20% by weight.

Examples of the sulfate-type surfactant of component (B) include alkyl sulfates, polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, polyoxyalkylene alkyl phenyl ether sulfates, and the like. Among these, from the viewpoint of quick foaming and good foam feel, the sulfate represented by the following general formula (1), in which a = 0, is 30 to 45% by weight, and a = 1. Some are composed of 17 to 27% by weight, those having a = 2 are composed of 10 to 20% by weight and the balance is a = 3 or more, and the sum of those having a = 0 to 2 is the total sulfate. What is 70 weight% or more is preferable.
_{R4-O- (C 2 H 4} O) a -SO 3 M (1)
(In the formula, R4 represents a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms, a represents 0 or a positive integer, M represents an alkali metal, an alkaline earth metal, ammonium, or an alkanolamine. Or a basic amino group.)

  Furthermore, 33 to 43% by weight when a = 0, 20 to 25% by weight when a = 1, 13 to 18% by weight when a = 2, and the balance is a = 3 or more. More preferably, it is made of a material. Moreover, the ratio of the sulfate in which a = 0 to 2 in the sulfate type surfactant is more preferably 85% by weight or more of the total sulfate. Moreover, in General formula (1), as R4, a C10-C16, especially C12-C14 thing is preferable, As M, sodium, potassium, and ammonium are preferable.

  Examples of the cationic polymer of component (C) include cationized cellulose derivatives, cationic starch, cationized guar gum derivatives, diallyl quaternary ammonium salt homopolymers, diallyl quaternary ammonium salts / acrylamide copolymers, and quaternized polyvinyl. Pyrrolidone derivative, polyglycol polyamine condensate, 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 / methacrylamide propyl salt Trimethylammonium copolymer, alkylacrylamide / acrylate / alkylaminoalkylacrylamide / polyethylene glycol methacrylate copolymer, adipic acid / dimethylaminohydroxypropylethylenetriamine copolymer (Cartaretin manufactured by Sandos, USA), JP-A-53-139734 And cationic polymers described in JP-A-60-36407, and cationized cellulose derivatives and cationized guar gum derivatives are particularly preferable.

  The cationic polymer of component (C) may be used in combination of two or more, and the content thereof is the present invention from the viewpoint of improving foam quality at the time of washing, collecting hair after drying, and improving touch. 0.02 to 5% by weight is necessary in the hair cleansing agent, more preferably 0.05 to 1% by weight, and particularly preferably 0.1 to 0.7% by weight.

  In order to further improve the cleaning performance, the hair cleansing agent of the present invention may contain a nonionic surfactant or an amphoteric surfactant as a surfactant other than the sulfate type surfactant of component (B). Good. 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. Examples include phenyl ethers, polyoxyalkylene (cured) castor oils, sucrose fatty acid esters, polyglycerin alkyl ethers, polyglycerin fatty acid esters, fatty acid alkanolamides, alkyl glycosides, and the like. Of these, alkylglycosides, polyoxyalkylene (C8 to C20) fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, and fatty acid alkanolamides are preferred. As the fatty acid alkanolamide, those having an acyl group having 10 to 16 carbon atoms are particularly preferable. The fatty acid alkanolamide may be either a monoalkanolamide or a dialkanolamide, and preferably has a hydroxyalkyl group having 2 to 3 carbon atoms, such as oleic acid diethanolamide, palm kernel oil fatty acid diethanolamide, coconut oil. Examples include fatty acid diethanolamide, lauric acid diethanolamide, polyoxyethylene coconut oil fatty acid monoethanolamide, coconut oil fatty acid monoethanolamide, lauric acid isopropanolamide, and lauric acid monoethanolamide.

  Examples of amphoteric surfactants include betaine surfactants. Of these, betaine surfactants such as alkyldimethylaminoacetic acid betaine and fatty acid amidopropyl betaine are more preferred, and fatty acid amidopropyl betaine is particularly preferred. The fatty acid amidopropyl betaine preferably has 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.

  The nonionic surfactant and the amphoteric surfactant can be blended in the hair cleanser of the present invention as necessary, and two or more kinds can be used in combination. In the case of the form of a cleaning agent, it is particularly preferable to use fatty acid amide propyl betaine or fatty acid alkanolamide because not only foaming power is improved but also an appropriate liquid property is obtained.

  The content of the nonionic surfactant is 0 to 15% by weight in the hair cleansing agent of the present invention, preferably 0.5 to 10% by weight, and more preferably 1 to 5% by weight. In addition, the content of the amphoteric surfactant is 0 to 10% by weight, preferably 0.5 to 8% by weight, and more preferably 1 to 5% by weight in the hair cleansing agent of the present invention.

  In order to improve the finish after drying, the hair cleansing agent of the present invention may further contain conditioning components such as silicones. Examples of silicones include dimethylpolysiloxane, methylphenylpolysiloxane, amino-modified silicone, polyether-modified silicone, epoxy-modified silicone, fluorine-modified silicone, cyclic silicone, alkyl-modified silicone, and oxazoline-modified silicone. Siloxane, methylphenylpolysiloxane, amino-modified silicone, polyether-modified silicone, oxazoline-modified silicone, and cyclic silicone are preferred.

  Two or more kinds of silicones may be used in combination, and the content thereof is preferably 0.01 to 20% by weight, more preferably 0.05 to 10% by weight, particularly preferably in the hair cleansing agent of the present invention. 0.1 to 5% by weight.

  In addition to the above components, the hair cleansing agent of the present invention includes water-soluble polymers such as hydroxypropylmethylcellulose, hydroxycellulose, polyvinyl alcohol, and polyethylene glycol; polyhydric alcohols such as sorbitol; humectants; ethylenediaminetetraacetic acid (EDTA), etc. Chelating agents of vitamins; drugs such as vitamins; amino acids and their derivatives; fine polymer powders of polyethylene, polystyrene, polymethylmethacrylate, nylon, silicone, etc. and their hydrophobized products; extracts derived from animals and plants; UV absorbers; An agent; an antiseptic; a bactericidal agent; a pH adjuster; a pigment;

The hair cleansing agent of the present invention has a pH when applied to hair (at 25 ° C. when diluted 20 times by weight with water) from the viewpoint of improving the gloss and unity of the hair and promoting penetration of the component (A) into the hair. Is preferably 2 to 5, more preferably 2 to 4.5, and particularly preferably 3 to 4.
The form of the hair cleansing agent of the present invention can be appropriately selected from liquid form, gel form, paste form, cream form, wax form and the like, but a liquid form using water or a lower alcohol, particularly water, as the solvent is preferable.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited only to these examples.

[Production Example (Production of Sulfate 1)]
Calcium 2470 (Kao Co., Ltd., dodecyl alcohol: tetradecyl alcohol = about 3: 1) and 1.45 g of potassium hydroxide were charged into a pressure-resistant sealed reactor and dehydrated at 110 ° C. and 10 mmHg for 30 minutes. The temperature was raised to 165 ° C. After raising the temperature, 456 g of ethylene oxide was injected, and an addition reaction was performed at that temperature for 30 minutes. Then, it cooled to 80 degreeC and neutralized with acetic acid 1.3g, and obtained the mixture of the ethylene oxide adduct of the said raw material alcohol.
Next, sulfation reaction was performed at 40 ° C. using 1793 g of the mixture obtained by the above operation and 607 g of sulfur trioxide. 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 sulfuric acid represented by the above general formula (1) having a constitutional ratio shown in Table 1 was adjusted by adjusting the concentration and pH using a 23% by weight aqueous sodium hydroxide solution, 75% by weight phosphoric acid and ion exchange water. 10000 g of a 25 wt% aqueous solution of salt 1 was obtained.

[Examples 1-3 and Comparative Examples 1-3]
A hair shampoo having the composition shown in Table 2 was prepared, and sensory evaluation on “slip of foam during shampooing”, “smoothness during rinsing”, “cohesion of hair after drying” and “slipping of hair after drying” Went. These results are also shown in Table 2. The evaluation method is as follows.

(1) “Slip of foam during shampooing” “Smoothness during rinsing” “Hair cohesion after drying”:
After rinsing a human hair bundle having a length of 25 cm, a width of 5.5 cm, and a weight of 10 g with warm water at 40 ° C., the excess moisture was removed and foamed thoroughly for about 30 seconds using a 0.5 g hair shampoo. Sensory evaluation of “slip of foam during hair washing” was performed. Next, sensory evaluation of “smoothness during rinsing” was performed under flowing water at 40 ° C. and 4 L / min. Similarly, the washed hair bundle was rinsed under flowing water at 40 ° C. and 2 L / min for 30 seconds, and then thoroughly wiped off with a towel and dried naturally. After drying, the “cohesiveness of the hair after drying” was evaluated visually. Evaluation was performed by five panelists, and the total value of the evaluation based on the following criteria was shown.
・ Slip of foam at the time of hair washing 4: Slide well 3: Slightly slip 2: Neither can be said 1: Not slippery 0: Does not slip ・ Smoothness at the time of rinsing 4: There is very good smoothness 3: Smoothness Yes 2: Neither 1: Slightly squeezed 0: Squeaky • Hair consistency after drying 4: Good 3: Slightly good 2: Not good 1: Not good 0: Not good

(2) “Hair slip after drying”:
After the hair was sufficiently wet, 5 g or 10 g of hair shampoo (5 g for semi-long, 10 g for long) was taken, washed, rinsed well, and the smoothness during rinsing was evaluated. Then, after drying the towel, it was sufficiently dried with warm air from a dryer, and the slipping of the hair after drying was evaluated. Evaluation was performed by five panelists, and the total value of the evaluation based on the following criteria was shown.
・ Sliding of hair after drying 4: Significant improvement in slipping is observed 3: Improvement in slipping is observed 2: Slight improvement in slipping is observed 1: No improvement in slipping 0: Sliding is worsening

[Example 4]
A conditioning shampoo having the following composition (% by weight) was prepared, and in the same manner as in Examples 1 to 3, when evaluating “cohesiveness of hair after drying” and “slipping of hair after drying”, the hair was washed. Good unity and slipperiness were obtained.
Carboxyl ethyl cellulose 0.1
Sulfate 1 15.0
Cationized guar gum 0.2
Cationized cellulose 0.2
Cocamidopropyl betaine 3.0
Cocamide MEA 0.5
Laureth 16 1.0
Isodecyl monoglyceryl ether 0.5
Cetanol 0.5
Sodium chloride 0.5
Sodium benzoate 0.4
Malic acid adjusted to pH 3.5
Sodium hydroxide adjusted to pH 3.5
Ion exchange water

[Example 5]
A conditioning shampoo having the following composition (% by weight) was prepared, and in the same manner as in Examples 1 to 3, when evaluating “cohesiveness of hair after drying” and “slipping of hair after drying”, the hair was washed. Good unity and slipperiness were obtained.
Carboxyl ethyl cellulose 0.1
Polyoxyethylene (3) ammonium lauryl sulfate 15.0
Cationized cellulose 0.5
Cocamide MEA 1.0
Cetanol 0.5
Ammonium xylene sulfonate 0.2
Sodium chloride 0.5
Sodium benzoate 0.4
Panthenol 0.05
Lactic acid Adjust to pH 4.5 Sodium hydroxide Adjust to pH 4.5 Ion-exchanged water Remaining

  The hair cleansing agent of the present invention has a foam quality that is slippery at the time of shampooing, has a smooth feel at the time of rinsing, and has a very high conditioning effect that gives the finished hair a cohesive and slippery feeling, Very useful in the toiletry field.

Claims (4)

The hair cleansing agent whose content of following component (A), (B) and (C) is 0.01 to 80 weight%, 5 to 30 weight%, and 0.02 to 5 weight%, respectively.
(A) Carboxyethyl cellulose (B) Sulfate type surfactant (C) Cationic polymer   The component (A) is carboxylethyl cellulose having a carboxylethyl group substitution degree of 0.2 to 2.8, a carbamoylethyl group substitution degree of 0.04 or less, and a polymerization degree of 2 to 3000. Hair cleaner. Component (B) is a sulfate represented by the following general formula (1), wherein a = 0 is 30 to 45% by weight, a = 1 is 17 to 27% by weight, a = 2 or 2 is composed of 10 to 20% by weight and the balance is a = 3 or more, and the sum of a = 0 to 2 is 70% by weight or more of the total sulfate. A hair cleanser as described in 1.
_{R4-O- (C 2 H 4} O) a -SO 3 M (1)
(In the formula, R4 represents a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms, a represents 0 or a positive integer, M represents an alkali metal, an alkaline earth metal, ammonium, or an alkanolamine. Or a basic amino group.)   The hair cleansing agent according to any one of claims 1 to 3, which has a pH of 2 to 5 at 25 ° C when diluted 20 times by weight with water.