JP6654573B2 - Shampoo composition - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a shampoo composition, and more particularly, to a shampoo composition embodying a basic function of a shampoo using an amino acid-based anionic surfactant as a main surfactant of a detergent composition.

Conventionally, in the shampoo composition for cleaning the scalp hair, depending on the purpose and application, foaming and detergency, and various surfactants and thickeners in consideration of viscosity suitable for use, or, The functions have been improved by using them in combination. However, in recent years, with the diversification of lifestyles, consumers who do not use rinsing agents or treatment agents after shampoo rinsing are increasing.In addition to the basic functions of shampoo compositions such as foaming and detergency, rinsing during rinsing There is also a strong demand for sensory qualities such as the goodness of the finger and the smoothness of the finger following the drying.
Therefore, while having the basic functions of a shampoo composition such as foaming and detergency, it has a viscosity suitable for use, has excellent finger rinsing properties, and maintains a transparent appearance in a wide temperature range Various technical developments have been performed to achieve this.
On the other hand, due to the diversification of consumer preferences, regarding the appearance of the shampoo composition, rather than the pearl-like appearance that has been widely used in the past, the preference for a transparent and transparent appearance has been greatly increased. Techniques for aesthetics that maintain transparency in a wide temperature range have also been strongly demanded.

The shampoo composition is composed of a combination of a foaming component such as an anionic surfactant or an amphoteric surfactant, and a thickener that thickens them. By blending the cationic polymer here, at the time of rinsing, an aggregate called coacervate (hereinafter simply referred to as coacervate) is formed by the anionic surfactant and the cationic polymer in the shampoo composition. Recent studies have shown that coacervate contributes to the goodness of fingers when shampooing and rinsing (for example, see Non-Patent Document 1), and application examples of this technology have been invented (for example, see Patent Reference 1). Furthermore, in order to further improve the coacervate technology, an amino acid-based anionic surfactant such as an acylglutamic acid derivative is used in place of the conventionally used sulfuric acid-based anionic surfactant, so that the rinsing time can be improved. (See, for example, Patent Document 2).
On the other hand, amino acid-based anionic surfactants such as acylglutamic acid derivatives are known to significantly lower the viscosity of the shampoo composition when added to a liquid detergent composition such as shampoo, Technology development for solving this is also widely performed (for example, see Patent Documents 3 and 4).

Japan Cosmetic Engineers Association Vol. 38 No. 3 2004

International Publication 2012/029514 pamphlet International Publication 2005/078039 pamphlet JP 2014-88348 A JP 2001-278727 A

In the technique of Patent Document 1, since an amino acid-based surfactant such as a glutamic acid derivative and a cationic polymer are combined, they are satisfactory in terms of finger rinsing. However, as described above, amino acid-based surfactants such as glutamic acid derivatives have a problem that when incorporated into a liquid detergent composition, they lower the viscosity of the agent, and are sufficiently satisfactory in the present technology. Was not able to obtain a good viscosity.
In accordance with the technique of Patent Document 2, which has been further developed in response to those problems, a liquid detergent is prepared by combining an amino acid-based surfactant such as a glutamic acid derivative with an amphiphilic substance having a specific organic value and an inorganic value. Techniques for improving the viscosity of the composition have been reported, but in this technique, it is necessary to incorporate a considerable amount of an amphiphile having a specific organic value or inorganic value, and accordingly, The anionic and amphoteric surfactants do not function well and slow foaming, and the amphipathic substances cannot be sufficiently solubilized in micelles, resulting in turbidity. There is a problem that a transparent appearance cannot be realized in a wide temperature range.
In addition, in the techniques of Patent Documents 3 and 4, an amino acid-based surfactant such as a glutamic acid derivative is combined with a specific acrylic acid-based copolymer or a polymer such as xyloglucan to form a liquid detergent composition. Although a technique for improving viscosity has been reported, it is necessary to mix a certain amount of a specific polymer in this technique, which results in turbidity or cloudiness of the agent, or slow foaming. There was a problem that.
In particular, regarding transparency, the shampoo composition contains various surfactants, and the dissolved state of the surfactant changes in a low temperature or high temperature region, which may cause a change in appearance (turbidity, precipitation, etc.). is there. Therefore, it was also a technical problem to maintain the transparency of the appearance in both the low temperature region and the high temperature region.

  For this reason, in a shampoo composition using an acyl glutamate, it is an issue to have a sufficient viscosity suitable for use, and it has been desired to develop a shampoo composition having excellent temporal stability. .

  In view of the above circumstances, the present inventor has proposed a shampoo composition containing an N-long-chain acylglutamate, an amphoteric surfactant and a water-soluble polymer having cationic dissociation without reducing foaming. In the course of intensive research in search of a material for increasing the viscosity of, it has been found that the inclusion of polyoxyalkylene fatty acid monoisopropanolamide is effective for this problem. However, simply containing the polyoxyalkylene fatty acid monoisopropanolamide in the above composition causes problems such as turbidity under long-term storage at a high temperature and precipitation under long-term storage at a low temperature. Was. Then, in order to solve these problems, the pH of the shampoo composition was examined in detail, and as a result, by controlling the pH at 25 ° C. between 4.0 and 6.0, a shampoo composition having a viscosity excellent in usability was obtained. Then, a shampoo composition having excellent foaming and stability over time was able to be realized according to the finger at the time of rinsing, and the present invention was completed.

That is, the present invention provides the following components (a) to (d);
(A) N-long-chain acylglutamate (b) amphoteric surfactant (c) water-soluble polymer having cationic dissociation (d) polyoxyalkylene fatty acid monoisopropanolamide; A shampoo composition that is between 0 and 6.0.

  Further, the present invention relates to a shampoo composition in which the content ratio (a) / (b) of the components (a) and (b) is in the range of 0.5 to 1.5.

  Further, the present invention relates to a shampoo composition in which the content mass ratio of the components (a), (b), and (d) [(a) + (b)] / (d) is in the range of 2.0 to 10.0. .

  Further, the present invention relates to a shampoo composition wherein the component (a) is a triethanolamine salt of N-long-chain acylglutamic acid.

  Further, the present invention relates to a shampoo composition containing a pH adjuster as the component (e).

  Furthermore, the present invention relates to a shampoo composition wherein the component (d) is polyoxypropylene coconut oil fatty acid monoisopropanolamide.

  Further, the present invention relates to a shampoo composition wherein the component (c) is one or more selected from a homopolymer or copolymer of dimethyldiallylammonium chloride, cationized cellulose, and cationized guar gum.

  Further, the present invention relates to a shampoo composition which is transparent or translucent.

  According to the present invention, it is possible to provide a shampoo composition having a viscosity excellent in usability, bubbling as per finger at the time of rinsing, and excellent stability over time.

  Next, an embodiment for carrying out the present invention will be described in detail. The embodiment described below is an example of a typical embodiment of the present technology, and the scope of the present technology is not construed as being narrow. In this specification, “to” indicates a range including numerical values before and after the symbol.

  The component (a) used in the shampoo composition of the present embodiment, N-long-chain acylglutamate, is formed by acylation of a long-chain fatty acid and glutamic acid, and has two carboxyl groups in the molecule. In which N-long-chain acylglutamic acid having a counterion has a counter ion. That is, it is sufficient that the pH value is higher than the pKa value of N-long-chain acylglutamic acid. Here, the hydrocarbon group of the long-chain fatty acid is not particularly limited, but generally has 8 to 22 carbon atoms, and more preferably 12 to 18 carbon atoms. As the fatty acid, a linear or branched fatty acid derived from a saturated or unsaturated fatty acid can be used. More specifically, examples of the fatty acid include caprylic acid, capric acid, lauric acid, myristic acid, stearic acid, isostearic acid, palmitic acid, oleic acid, linoleic acid, behenic acid, coconut oil fatty acid, palm fatty acid and the like. Can be One of these may be used, or two or more selected from the above group may be used in combination. Particularly, coconut oil fatty acid, lauric acid, and myristic acid are preferred from the viewpoint of good foaming and good foam quality.

  The component (a) is in the form of a salt, and as described above, it is sufficient that a counter ion is present. However, the component (a) may have been neutralized with an alkali beforehand. During the production process, a neutralized salt form can be obtained by adding an alkali. The neutralization ratio is not particularly limited, and may partially include the form of N-long-chain acylglutamic acid. However, the neutralization ratio is preferably 80% or more, and 90% or more. Is more preferred, and even more preferably 95% or more, and most preferably 99% or more.

  Such salts are not particularly limited and include, for example, alkali metal salts such as sodium and potassium, alkaline earth metal salts such as calcium and magnesium, inorganic salts such as aluminum and zinc, or ammonia, monoethanolamine, diethanolamine, and triethanolamine. Examples thereof include organic amines such as ethanolamine, and organic salts such as basic amino acids such as arginine and lysine. Of these, one kind may be used, or two or more kinds selected from the above group may be used in combination. From the viewpoint of good foaming and maintaining transparency in a wide temperature range, sodium salts and triethanolamine salts are preferred, and triethanolamine salts are most preferred.

  The component (a) in the present embodiment, the N-long-chain acylglutamate, is one of the main cleaning bases of the shampoo composition and contributes to the basic function of the shampoo such as foaming and soil removal. In addition, when used in combination with a water-soluble polymer having cationic dissociation, which is the component (c) described later, it is possible to provide a smooth finger-pulling effect during rinsing.

  As commercially available examples of the component (a) used in the present embodiment, aminosurfact ACDS-L (manufactured by Asahi Kasei Chemicals Corporation), which is a 25% aqueous solution of sodium cocoyl glutamate, and Amisoft CS-11, which is sodium cocoyl glutamate ( Aminosurfact ACDP-L (manufactured by Asahi Kasei Chemicals Corporation), a mixed aqueous solution of 22% potassium cocoyl glutamate and 7% sodium cocoyl glutamate, Amisoft CK-22 (30% aqueous solution of potassium cocoyl glutamate) (Ajinomoto Co.), 30% aqueous solution of cocoylglutamate triethanolamine, Amisoft CT-12 (Ajinomoto Co.), 30% aqueous solution of lauroylglutamate triethanolamine, Amisoft LT-12 (Ajinomoto Co.) and the like. Ceremony Rukoto can, it can be suitably used also in the present embodiment.

  The content of the component (a) in the present embodiment is not particularly limited, but is preferably 2 to 20% by mass (hereinafter, simply abbreviated as “%”) in the total amount of the shampoo composition, and more preferably 4 to 20%. 15%. By setting it in this range, it is suitable for effects such as good foaming and good finger passing during rinsing.

  The amphoteric surfactant which is the component (b) in the present embodiment is one of the important bases of the shampoo composition, and has not only a cleaning effect but also the viscosity of the shampoo composition when used in combination with the component (a). Can also be adjusted. The component (b) is not particularly limited as long as it is an amphoteric surfactant usually used in shampoo compositions and the like, but is preferably a betaine acetate-type amphoteric surfactant or an imidazoline-type amphoteric surfactant. In a specific example, as the betaine acetate surfactant, octyl dimethyl amino acetate betaine, lauryl dimethyl amino acetate betaine, coconut oil alkyl dimethylamino acetate betaine, myristyl dimethylamino acetate betaine, cetyl dimethylamino acetate betaine, coconut fatty acid amide Propyldimethylaminoacetate betaine, lauric amide propyldimethylaminoacetate betaine, lauryldihydroxyethylaminoacetate betaine, cetyldihydroxyethylaminoacetate betaine, and the like.Examples of imidazoline surfactants include N-coconut fatty acid acyl-N Sodium carboxymethyl-N-hydroxyethylethylenediamine, N-coconut fatty acid acyl-N-carboxymethoxyethyl-N-carboxymethylethylenediamine Thorium, and the like. Among them, lauryl dimethylamino acetate betaine, coconut oil alkyldimethylaminoacetate betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, lauric acid amidopropyldimethylaminoacetic acid betaine, N-coconut fatty acid acyl-N-carboxymethoxyethyl- N-carboxymethylethylenediamine disodium is particularly preferred.

  Commercially available examples of the component (b) in the present embodiment include Marpovistar CAP-X (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), a 38.5% aqueous solution of cocamidopropyl betaine, and Ricabion A, a 30% aqueous solution of lauryl betaine. -100 (manufactured by Nippon Rika Co., Ltd.), a 30% aqueous solution of lauramide propyl betaine, Ricabion B-300 (manufactured by Nippon Rika Co., Ltd.), and a 26.5% aqueous solution of cocoamphoacetate sodium salt, Amphorex 30S ( And the like can be used.

  The content of the component (b) in the present embodiment is not particularly limited, but is preferably 1 to 20%, more preferably 2 to 15%, based on the total amount of the shampoo composition. By setting the content in this range, it is preferable in that the effect of thickening the component (a) can be obtained in addition to good foaming.

  In this embodiment, by combining the above-mentioned components (a) and (b), it becomes possible to obtain a viscosity of a shampoo composition excellent in usability. The content ratio of such component (a) and component (b) is not particularly limited, but component (a) / component (b) is preferably in the range of 0.5 to 1.5. . More preferably, the ratio of component (a) / component (b) is in the range of 0.8 to 1.2. By setting it in such a range, a viscosity excellent in usability is obtained, and finger passing becomes good.

The water-soluble polymer having a cationic dissociation, which is the component (c) in the present embodiment, is not particularly limited as long as it is a water-soluble polymer having a cationic dissociation generally used in shampoo compositions and the like. And a water-soluble polymer containing an amino group or an ammonium group bonded to a polymer chain of a water-soluble polymer, or containing dimethyldiallylammonium halide as a constituent unit.
In the present embodiment, in a specific example, a homopolymer or a copolymer of cationized cellulose, cationized guar gum, cationized starch, and dimethyldiallylammonium chloride (here, the copolymer is one in which The homopolymer of diallylammonium chloride is not particularly limited, and the same applies to the following.), Vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer, polydimethylmethylenedipernium chloride, and the like. Among these, homopolymers or copolymers of dimethyldiallylammonium chloride, cationized cellulose, and cationized guar gum are particularly preferred.

  The content of the component (c) in the present embodiment is not particularly limited, but is preferably 0.1 to 3.0%, more preferably 0.3 to 2.0% of the total amount of the shampoo composition. is there. By setting the content within this range, it is possible to obtain a product excellent in fingering at the time of rinsing without reducing foaming during use, which is preferable.

  Examples of commercially available components (c) in the present embodiment include, for example, Lipoflow MN (manufactured by Lion Corporation), which is a 5.5% aqueous solution of polyquaternium-7, and Leoguard GP (manufactured by Lion Corporation), which is polyquaternium-10. SENSOMER CI50 (manufactured by Nippon Lubrizol) which is a 24% aqueous solution of hydroxypropyltrimonium chloride starch, JAGUAR C-14S (manufactured by Rhodia) which is guar hydroxypropyltrimonium chloride, and hydroxypropyltrimonium hyaluronate. And Hyalover P (manufactured by Kewpie).

  The polyoxyalkylene fatty acid monoisopropanolamide as the component (d) in the present embodiment is a fatty acid monoisopropanolamide, which is an amide compound of a linear or branched saturated or unsaturated fatty acid and monoisopropanolamine, and propylene oxide. Is obtained by addition polymerization. As the fatty acid used for this, a straight-chain or branched, saturated or unsaturated fatty acid can be used, but a straight-chain saturated fatty acid having 8 to 22 carbon atoms, that is, coconut oil fatty acid may be used. preferable. The average addition mole number of the polyoxypropylene to be addition-polymerized (hereinafter sometimes simply referred to as “POP”) may be 0.3 to 5 moles per molecule. However, the average number of moles added is preferably 0.5 to 2, and more preferably 1. Therefore, polyoxypropylene coconut oil fatty acid monoisopropanolamide (1PO) obtained by adding polyoxypropylene having an average addition number of 1 to an amide compound of coconut oil fatty acid and monoisopropanolamine is particularly preferable.

  The component (d) used in this embodiment increases the viscosity of the shampoo composition composed of the component (a) and the component (b), and contributes to making the composition preferable in terms of usability. The amide bond constituting a part of the molecular structure of the component (d) is more strongly polarized than the ester bond or the ether bond, and therefore has a large polarity, and the micelle composed of the components (a) and (b) It has a higher association ability, and is considered to have a higher viscosity increasing ability to promote micelle growth.

Examples of commercially available components (d) in the present embodiment, for example, a PPG-2 Cocamide, Amizetto 1PC (manufactured by Kawaken Fine Chemicals Co., Ltd.).

  The content of the component (d) in the present embodiment is not particularly limited, but is preferably 0.5 to 5%, more preferably 2 to 4% based on the total amount of the shampoo composition. By setting the content in this range, the composition comprising the component (a) and the component (b) is suitably used in that a thickening effect can be obtained.

  In the present embodiment, by combining the above components (a), (b), and (d) at a specific ratio, the viscosity of the shampoo composition that is more excellent in usability can be obtained. The content ratio of such component (a), component (b), and component (d) is not particularly limited, but [(a) + (b)] / (d) is in the range of 2 to 10. It is preferred that Further, it is more preferable to set the range of 1 to 5. By setting it in such a range, a viscosity excellent in usability is obtained, and foaming becomes good.

  In this embodiment, when the components (a) and (d) or the components (b) and (d) are combined, a large thickening effect on the shampoo composition is hardly obtained. However, the effect of thickening is exhibited by further adding the component (d) of the present embodiment to the composition in which the component (a) and the component (b) are mixed. This is presumably because component (a) and component (b) form a mixed micelle system, and component (d) acts on the micelles to promote micelle growth and improve viscosity. .

This embodiment may further contain a component (e) a pH adjuster. Examples of the pH adjuster include an alkaline agent and an acid agent.
As the alkaline agent, one or more selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, potassium carbonate, sodium bicarbonate, sodium monohydrogen phosphate, sodium dihydrogen phosphate, triethanolamine and the like Can be used. Examples of the alkaline agent in this case include sodium hydroxide, potassium hydroxide, ammonia, triethanolamine, monoethanolamine, and 2-amino-2-methyl-1-propanol, and triethanolamine is particularly preferable.
As the acidic agent, one or more selected from citric acid, lactic acid, gluconic acid, succinic acid, malic acid, phosphoric acid, pyrrolidone carboxylic acid, salicylic acid, benzoic acid and the like can be used. Of these, citric acid and benzoic acid are preferably used, and one or more of these may be used.

  As the pH adjuster that is the component (e) in the present embodiment, various combinations of the above components can be used. Among them, α-hydroxy acid and / or a salt thereof, and a carboxylic acid having an aromatic ring and / or Those used in combination with the salt are particularly preferred. Specifically, citric acid and / or its salt, benzoic acid and / or its salt and the like can be exemplified. Most preferred is a combination of citric acid and sodium benzoate. When the pH is adjusted using these, precipitation and white turbidity can be suppressed under low-temperature storage, and a shampoo composition capable of maintaining a transparent appearance in a wide temperature range can be obtained.

  The content of the component (e) is not particularly limited, and may be suitably used as long as the pH of the shampoo composition can be adjusted within the range of 4.0 to 6.0. it can.

  This embodiment contains the components (a) to (d) described above, and is obtained by adjusting the pH to 4.0 to 6.0 using the pH adjuster of the component (e) as necessary. However, as another technique, there is an advantage that the transparency of the shampoo composition is high. Hereinafter, this point will be described.

  Heretofore, shampoo compositions have been mainly blended with a pearling agent represented by ethylene glycol distearate and have a pearl-like appearance. However, in recent years, from the viewpoint of enjoying the beauty of the shampoo product itself, there is an increasing need for a shampoo composition having no transparency and having high transparency. Since the shampoo composition is usually stored in a bathroom, it is necessary to stably maintain transparency in a wide temperature range, specifically, in a range of 5 ° C to 40 ° C. However, the N-long-chain acylglutamate, which is the component (a) of the present embodiment, has two carboxyl groups in the molecule, and these two carboxyl groups are two-steps depending on the pH of the continuous phase. Because of its dissociation property, its dissolved state changes greatly depending on the pH value, and at the same time, the dissolved state of other surfactants and the like also changes.Therefore, it is technically difficult to obtain a transparent shampoo composition. there were.

  In the present embodiment, the pH value of the shampoo composition containing the components (a) to (d) and the dynamics at the temperature are examined in detail, and the pH value at 25 ° C. is in the range of 4.0 to 6.0. By doing so, it has been found that transparency under storage at 5 ° C. and 40 ° C. can be ensured. By setting the pH value at 25 ° C. to 4.0 or more, it is possible to prevent the solubility of the component (a) from lowering and prevent precipitation during storage at 5 ° C., so that transparency can be easily ensured. Further, by adjusting the pH value at 25 ° C. to 6.0 or less, the solubilizing ability of the mixed micelles is improved, the elution of the component (d) during storage at 40 ° C. is prevented, and turbidity of the shampoo composition is prevented. Since it can be prevented, transparency can be easily ensured. In terms of such an effect, it is more preferable that the pH value at 25 ° C. be 4.5 to 5.5. The measurement of the pH value in the present embodiment is performed using a desktop pH / water quality analyzer F-72 (manufactured by Horiba, Ltd.).

  The term “transparent to translucent” in the present embodiment means that the shampoo composition is allowed to stand at 25 ° C. for 24 hours and then the transmittance at 500 nm is measured, and the obtained transmittance is greater than 60%. . Further, the transmittance is preferably 85% or more, and more preferably 95% or more. The transmittance in this embodiment is a value measured using an ultraviolet-visible spectrophotometer (UV2500PC manufactured by Shimadzu Corporation) on the reference side as purified water.

  In the case where the shampoo composition of the present embodiment is made transparent or translucent, the shampoo composition itself becomes transparent or translucent even when a powder such as granules or pearling agent or a coloring agent is further contained. By being transparent, it also contributes to further improving the visual effect of a separately contained powder material or the like.

  The method for producing the shampoo composition of the present embodiment is not particularly limited, and is prepared by a conventional method. For example, the components (a) and (b) are heated and dissolved at 80 ° C. in an aqueous medium. Thereafter, the component (c) and the component (d) are sequentially added, and the mixture is uniformly mixed and stirred. Thereafter, the component (e) is added and uniformly dissolved, and then cooled to room temperature to obtain a shampoo composition. is there.

  In the shampoo composition of the present embodiment, in addition to the above-mentioned essential components, components usually used in shampoo compositions and the like, that is, anionic surfactants other than component (a), cationic surfactants, and components other than component (d) Nonionic surfactants, nonionic polymers, anionic polymers, oily components, lower alcohols, polyhydric alcohols, aqueous components such as humectants, ultraviolet absorbers, antioxidants, beauty components, preservatives, dyes, cool Agents, pigments, powders, fragrances, and the like can be appropriately contained as long as the effects of the present invention are not impaired.

  The shampoo composition of the present embodiment can be used for various uses such as hair, body, and pet. Further, it can be applied to various limited containers such as bottles, bottles with dispensers, tubes, jars, etc., depending on the purpose of use, method, environment of use, and the like.

  Next, the present invention will be described in detail with reference to examples. It should be noted that the present invention is not limited by these.

Samples 1 to 37: Shampoo compositions The shampoo compositions shown in Tables 1 to 4 below were prepared by the following production methods, and (a) viscosity, (b) foaming, (c) fingering at the time of rinsing, and (d) appearance Was evaluated by the following evaluation methods and evaluation criteria, and the results are also shown in Tables 1 to 4.

(Production method)
A: A part of component 23 and components 1 to 5 are heated and dissolved at 80 ° C.
B: Components 6 to 8 are added to A, and dissolved by heating at 80 ° C.
C: Components 9 to 12 are dispersed in the remainder of Component 23 at room temperature.
D: Add C to B and mix uniformly at 80 ° C.
E: Components 13 to 16 are added to D and mixed uniformly at 80 ° C.
F: Add components 17 to 22 to E and dissolve uniformly at 80 ° C.
G: Cool F to room temperature with stirring.
H: G was filled in a container to obtain a shampoo composition.

(Evaluation method)
The following evaluation items were evaluated by the following methods.
(Evaluation item)
(B) Viscosity (b) Foaming (c) Rinse with fingers during rinsing (d) Transparency of appearance

<(A) Evaluation method for viscosity>
The shampoo composition was allowed to stand at a constant temperature of 20 ° C for 24 hours, and then the viscosity was measured using a Brookfield-type rotational viscometer. The obtained viscosity value was evaluated using the following criteria.
[Judgment criteria]
◎: Over 12000 mPa · s ○: Over 5000 and 12000 mPa · s or less △: Over 2000 and 5000 mPa · s or less ×: 2000 mPa · s or less

<(B) Evaluation method of foaming>
An aqueous solution of 1% by mass of the shampoo composition was prepared, and the foaming was evaluated by a roll miles method (ISO 696, JIS K3352). Further, the height value of the obtained foam was determined according to the following four-step criteria.
The Ross Miles method used for evaluating foaming in this example was performed according to the following procedure. Specifically, 200 ml of the test solution was poured from a height of 90 cm into a graduation tube containing 50 ml of the test solution having the same concentration and the same temperature through a pore having a diameter of 2.9 mm. It performed using the method of measuring.
[Four-step criterion (bubble height value by Ross Miles method)]
◎: 300 mm or more ○: 200 mm or more and less than 300 mm △: 50 mm or more and less than 200 mm ×: less than 50 mm

<(C) Evaluation method according to finger during rinsing>
Twenty panelists specialized in cosmetics washed the hair with 6 g of the shampoo composition in a state where no hair dressing was applied to the hair, and evaluated the following finger criterion (I 5), and the average score of all panels was determined according to the following criterion (II).
[Evaluation criteria (I)]
[Evaluation Result]: [Score]
Very good: 5 points good: 4 points Normal: 3 points Slightly poor: 2 points Poor: 1 point
[Judgment criteria (II)]
[Average score]: [Judgment]
4.5 or more: ◎
3.5 or more and less than 4.5: ○
1.5 or more and less than 3.5: △
Less than 1.5: ×

<(D) Evaluation method for transparency of appearance>
The shampoo composition was stored in a constant temperature room at 5 ° C. and 40 ° C. for one month, and then stored at 25 ° C. for 24 hours. The transmittance at 500 nm was measured with an ultraviolet-visible spectrophotometer (UV2500PC, Shimadzu Corporation). Was used for the measurement. The obtained transmittance was evaluated using the following criteria.
[Judgment criteria]
◎: 85% or more for both 5 ° C storage and 40 ° C storage ○: The lower of 5 ° C storage and 40 ° C storage is 60% or more and less than 85% △: 5 ° C storage and 40 ° C storage Any of the lower ones is 40% or more and less than 60% ×: The lower one of the 5 ° C storage product and the 40 ° C storage product is less than 40%

As is clear from the results of Tables 1 to 4, the shampoo compositions of Samples 1 to 27 containing all the components (a) to (d) and having a pH of 4.0 to 6.0 correspond to Samples 28 to 28. Compared to the shampoo composition of No. 37, the shampoo composition was excellent in viscosity, foaming, fingering during rinsing, and transparency of appearance in a wide temperature range.
Specifically, sample 28 from which component (a) was removed, sample 30 from which component (b) was removed, sample 32 from which component (c) was removed, and sample 34 from which component (d) was removed, were compared to sample 1. None of the items in the evaluation results was satisfactory. Next, as a result of a study in the case where another component other than the component of the present invention was used, the sample 29 using sodium laureth sulfate instead of the component (a) was satisfactory in terms of fingering at the time of rinsing. No sample was obtained, and the sample 31 using sodium cocoyl methyl taurine instead of the component (b) was satisfactory in terms of viscosity excellent in usability and transparency in appearance in a wide temperature range. In sample 33 using hydroxypropyl methylcellulose instead of component (c), satisfactory results were not obtained at the point of rinsing with fingers, and cocamido diethanolamide was used instead of component (d). In Sample 35 which was not satisfactory in terms of viscosity excellent in usability was not obtained. In the case of the sample 36 in which the pH was adjusted to 6.5, satisfactory results were not obtained in terms of viscosity, which was excellent in usability. In the case of the sample 37 in which the pH was adjusted to 3.5, foaming occurred and a wide range of temperature was observed. No satisfactory product was obtained in terms of the transparency of the appearance.

Comparing the shampoo compositions of Samples 1 to 27, Samples 1 to 3 having a component (a) / component (b) in the range of 0.5 to 1.5 are more in comparison to Sample 5 having a composition of 3.5. It was found that a viscosity excellent in usability was obtained. Specifically, although the evaluation of viscosity was the same for Sample 5 in which the component (a) / component (b) was 3.5 and Sample 3 in which the component (a) / component (b) was 1.5, the specific Regarding the viscosity value, Sample 5 was 10000 mPa · s, and Sample 3 was 12000 mPa · s, and the result was that Sample 3 had a viscosity superior in usability. Samples 1 to 3 having a component (a) / component (b) within the range of 0.5 to 1.5 have better finger passing during rinsing than sample 4 having 0.286. I understood. Specifically, the evaluation was the same for Sample 4 in which the component (a) / component (b) was 0.286 and Sample 2 in which the component (a) / component (b) was 0.5. The sample 4 had 4 points and the sample 2 had 4.4 points, and the finger of the sample 2 was better when rinsed.
Furthermore, compared to the sample 9 in which [(a) + (b)] / (d) is 15, the samples 4, 6, and 7 in the range of 2 to 10 have excellent usability in viscosity and are transparent. The nature was also high. Specifically, the evaluation of viscosity was the same for Sample 9 where [(a) + (b)] / (d) was 15 and Sample 7 where 10 The viscosity values of Sample 9 were 5,500 mPa · s, and that of Sample 7 were 7,000 mPa · s. The result was that Sample 7 had a viscosity superior in usability. The sample 9 having [(a) + (b)] / (d) of 15 and the sample 7 of 10 had the same evaluation of the transparency, but the specific transmittance as the basis of the evaluation was obtained. As a result, 70% of sample 9 and 80% of sample 7 showed that sample 7 had higher transparency. Further, it was found that foaming was improved in Samples 4, 6, and 7 in the range of 2 to 10 compared to Sample 8 in which [(a) + (b)] / (d) was 1.5. . More specifically, the evaluation of foaming was the same for Sample 8 with [(a) + (b)] / (d) of 1.5 and Sample 6 with 2, but the specific evaluation of Typical foam height values were 200 mm for sample 8 and 280 mm for sample 6, with sample 6 having better foaming.

Reference Example 2: Shampoo composition
(component):(%)
1 Lauroylglutamic acid triethanolamine salt (30% aqueous solution) (* 2) 20
2 Sodium cocoamphoacetate (26.5% aqueous solution) (* 7): 15
3 Sodium olefin sulfonate (37% aqueous solution) (* 5): 15
4 Hydroxypropyltrimonium hyaluronate (* 17): 1
5 PEG-3 lauramide (* 14): 3
6 Ethyl oleate: 0.2
7 Citric acid: 0.8
8 Salicylic acid: 0.01
9 Malic acid: 0.01
10 Sodium benzoate: 0.5
11 Purified water: remaining
(* 17) Hyalevel P (made by Kewpie)

(Production method)
A: A part of component 11 and components 1 to 3 are uniformly mixed at 80 ° C.
B: Disperse Component 4 in the remainder of Component 11 at room temperature.
C: Add B to A and mix uniformly at 80 ° C.
D: Components 5 and 6 are added to C and uniformly mixed at 80 ° C.
E: Components 7 to 10 are added to D and uniformly dissolved at 80 ° C.
F: Cool E to room temperature with stirring.
G: F was filled in a container to obtain a shampoo composition.

The shampoo composition of Reference Example 2 was a shampoo composition having a viscosity excellent in usability, bubbling as per finger at the time of rinsing, and excellent stability with time.

Example 3: Body shampoo (ingredient): (%)
1 Lauroylglutamic acid triethanolamine salt (30% aqueous solution) (* 2): 20
2 Sodium cocoamphoacetate (26.5% aqueous solution) (* 7): 15
3 Sodium olefin sulfonate (37% aqueous solution) (* 5): 15
4 Polyquaternium-10 (* 18): 0.02
5 PPG-2 cocamide (* 13): 3
6 Vitamin E: 0.05
7 Citric acid: 0.8
8 Glycosyl trehalose: 0.5
9. Sodium dilauroyl glutamate sodium solution (30% solution): 1
10 Sodium benzoate: 0.5
11 Purified water: remaining amount (* 18) Katinal HC-100 (manufactured by Toho Chemical Industry Co., Ltd.)

(Production method)
A: A part of component 11 and components 1 to 3 are uniformly mixed at 80 ° C.
B: Disperse Component 4 in the remainder of Component 11 at room temperature.
C: Add B to A and mix uniformly at 80 ° C.
D: Components 5 and 6 are added to C and uniformly mixed at 80 ° C.
E: Components 7 to 10 are added to D and uniformly dissolved at 80 ° C.
F: Cool E to room temperature with stirring.
G: F was filled in a container to obtain a body shampoo.

  The body shampoo of Example 3 was a shampoo composition having a viscosity excellent in usability, bubbling as per finger at the time of rinsing, and excellent stability over time.

  In addition, it is also possible to prepare a shampoo composition having a pearl-like appearance by further adding a pearling agent to Examples 2 and 3 while using the technique of the present invention. A shampoo composition having a transparent or translucent appearance and containing a pearling agent was particularly preferable in terms of aesthetics because it contained pearling agents.

Reference Example 4: Shampoo composition (pearl-like appearance)
(component):(%)
1 Cocoylglutamic acid triethanolamine salt (30% aqueous solution) (* 18) 25
2 Cocamidopropyl betaine (38.5% aqueous solution) (* 19): 20
3 Polyquaternium-10 (* 20): 1
4 PEG-3 lauramide (* 14): 3
5 Ethylene glycol distearate (* 21): 2
6 citric acid: 0.8
7 Sodium benzoate: 0.5
8 Purified water: remaining
(* 18) Amino Surfact ACMT-L (manufactured by Asahi Kasei Chemicals Corporation)
(* 19) Marpovistar CAP-X (Matsumoto Yushi Seiyaku Co., Ltd.)
(* 20) Kachinal HC-200 (manufactured by Toho Chemical Industry Co., Ltd.)
(* 21) Este Pearl 15V (Nikko Chemicals)

(Production method)
A: Take 10 parts of component 8 and dissolve components 1-2 at 80 ° C. under heating.
B: Component 3 is dispersed in the remainder of Component 8 at room temperature.
C: Add B to A and mix uniformly at 80 ° C.
D: Components 4 and 5 are added to C and uniformly mixed at 80 ° C.
E: Components 6 and 7 are added to D and uniformly dissolved at 80 ° C.
F: Cool E to room temperature with stirring.
G: F was filled in a container to obtain a shampoo composition (pearl-like appearance).

The shampoo composition of Reference Example 4 was a shampoo composition having a viscosity excellent in usability, bubbling as per finger at the time of rinsing, and excellent in stability over time.

Claims (6)

The following components (a) to (d):
(A) N-long chain acylglutamate : 4 to 15% by mass
(B) amphoteric surfactant : 2 to 15% by mass
(C) Water-soluble polymer having cationic dissociation : 0.3 to 2.0% by mass
(D) containing a polyoxyalkylene fatty acid monoisopropanolamide,
The mass ratio (a) / (b) of the components (a) and (b) is in the range of 0.5 to 1.5,
The content ratio of the components (a), (b) and (d) [(a) + (b)] / (d) is in the range of 2.0 to 10.0,
PH at 25 ° C. is 4.0 to 6.0,
A shampoo composition that is transparent or translucent.   The shampoo composition according to claim 1, wherein the pH at 25C is 4.5 to 5.5.   The shampoo composition according to claim 1 or 2, wherein the component (a) is a triethanolamine salt of N-long-chain acylglutamic acid.   The shampoo composition according to any one of claims 1 to 3, further comprising a pH adjuster as the component (e).   The shampoo composition according to any one of claims 1 to 4, wherein the component (d) is polyoxypropylene coconut oil fatty acid monoisopropanolamide.   The shampoo composition according to any one of claims 1 to 5, wherein the component (c) is one or more selected from a homopolymer or copolymer of dimethyldiallylammonium chloride, cationized cellulose, and cationized guar gum. .