JP6589287B2 - Hair cleaner composition - Google Patents

Description

The present invention relates to a novel detergent composition for hair.

In general, surfactants are used in various combinations according to the desired application. For example, the main surfactants for hair cleaning agents include alkyl sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl ether acetates, succinic anionic surfactants, amino acid anionic surfactants Etc. are used. In general, the main use of a hair cleanser such as a shampoo is to remove dirt from the hair and keep it clean. At the same time, there is a need for a product having conditioning properties such as goodness and lumps of the fingers after washing and after washing. Therefore, in many shampoos, in addition to the surfactant as a cleaning component, a cationic polymer, an oil agent, a silicone compound, and the like are blended.
For example, Patent Document 1 discloses a composition comprising an amino acid anionic surfactant, an ether sulfate type anionic surfactant, a betaine type amphoteric surfactant, and a specific cationic group-containing copolymer. It has been proposed as a detergent composition for hair that is excellent in foam quality, easy to touch during washing, and excellent in fingering and softness even during rinsing. Patent Document 2 discloses that a shampoo composition containing fatty acid amidopropyldimethylaminoacetic acid betaine, an anionic surfactant, a cationized polymer, and a yukinoshita extract can suppress hair squeaking during and after washing. ing. Furthermore, if the amount of the cationized polymer is too small, the effect of suppressing squeaking is insufficient during or after washing, and if it is too much, it remains on the hair, which accumulates by continuous use of the shampoo and makes the hair stiff. It is disclosed that there is a tendency. Patent Document 3 discloses a shampoo composition comprising a specific copolymer, an ether sulfate type anionic surfactant and / or a betaine type amphoteric surfactant, a water-soluble inorganic salt, and a coconut oil fatty acid N-methylethanolamide. It is disclosed that the foaming is sometimes good, the slipperiness that does not entangle the hair is excellent, the hair does not crush after use, and the bundling is good. In Patent Document 4, a composition containing one or more surfactants selected from an anionic surfactant, an amphoteric surfactant, and a nonionic surfactant, a specific arginine derivative, and a cationized polymer is good when washing hair. It is disclosed that smooth foaming and creamy foam quality are obtained, the fingering is smooth during rinsing, no creaking, and gloss is given to the hair after drying. In addition, with regard to the content of the cationized polymer, if it is less than a certain amount, the foamy creaminess and the fingering property at the time of rinsing may not be obtained. It has been disclosed that glossiness to hair may not be obtained.

JP 2010-030960 A JP 2010-138083 A JP 2011-162460 A JP 2011-207801 A

It is an object of the present invention to provide a detergent composition for hair that is excellent in the amount of foam, foam quality, fingering at the time of hair washing, is good at fingering even at the time of rinsing, and has a feeling of unity after drying. Objective.

The present invention includes a specific long-chain alkylbetaine-type surfactant, so that the amount of foam, foam quality, fingering at the time of shampooing are not required without specially adding a conditioning agent such as a cationized polymer. It is easy to wash and has good fingering even during rinsing, and it becomes a hair cleanser with excellent hair feeling after drying. At the same time, a specific component is added to the long-chain alkylbetaine surfactant. As a result, it has been found that the handling property of the long-chain alkylbetaine surfactant can be improved, and the present invention has been completed.

That is, the present invention provides a hair cleansing composition, a surfactant composition, and a method for improving handling properties, which are summarized as follows.

［式中、Ｒ１は炭素数１６〜２２の直鎖状若しくは分岐鎖状のアルキル基又はアルケニル基を表す。Ｒ２及びＲ３は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。］で表される長鎖アルキルベタイン型界面活性剤を含有することを特徴とする毛髪用洗浄剤組成物。 (Claim 1)
A hair cleanser composition containing at least one selected from the group consisting of an anionic surfactant and a nonionic surfactant,
Component (A): General formula (1)

[Wherein, R 1 represents a linear or branched alkyl group or alkenyl group having 16 to 22 carbon atoms. R2 and R3 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. A detergent composition for hair, comprising a long-chain alkylbetaine surfactant represented by the formula:

(Section 2)
Item 2. The hair cleaning composition according to Item 1, wherein the component (A) is contained in an amount of 0.1% or more based on the total weight of the surfactant.

［式中、Ｒ４は炭素数８〜１４の直鎖状若しくは分岐鎖状のアルキル基又はアルケニル基を表す。Ｒ５及びＲ６は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。］で表される中鎖アルキルベタイン型界面活性剤及び／又は
一般式（３）

［式中、Ｒ７は炭素数７〜２１の直鎖状若しくは分岐鎖状のアルキル基又はアルケニル基を表す。Ｒ８は水素原子又は炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基を表す。Ｒ９及びＲ１０は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。ｐは、１〜４の整数を表す。］
で表されるアミドアルキルベタイン型界面活性剤を含有する項１又は項２に記載の毛髪用洗浄剤組成物。 (Section 3)
In addition, component (B):
General formula (2)

[Wherein, R 4 represents a linear or branched alkyl group or alkenyl group having 8 to 14 carbon atoms. R5 and R6 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. ] A medium chain alkyl betaine type surfactant represented by the general formula (3)

[Wherein R 7 represents a linear or branched alkyl group or alkenyl group having 7 to 21 carbon atoms. R8 represents a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms. R9 and R10 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. p represents an integer of 1 to 4. ]
Item 3. A hair cleaning composition according to Item 1 or 2, which comprises an amide alkylbetaine surfactant represented by the formula:

(Claim 4)
Item 4. The hair cleanser according to Item 3, wherein the content ratio of the component (A) and the component (B) is in the range of (A) / (B) = 1/9 to 7/3 (weight ratio). Composition.

(Section 5)
Item 5. The hair cleaning composition according to any one of Items 1 to 4, wherein the component (A) is palmityldimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine, or behenyldimethylaminoacetic acid betaine.

(Claim 6)
The component (B) is lauryldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, lauric acid amidopropyldimethylaminoacetic acid betaine, myristic acid amidopropyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine or palm kernel oil fatty acid Item 6. The hair cleaning composition according to any one of Items 3 to 5, which is amidopropyldimethylaminoacetic acid betaine.

［式中、Ｒ１は炭素数１６〜２２の直鎖状若しくは分岐鎖状のアルキル基又はアルケニル基を表す。Ｒ２及びＲ３は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。］で表される長鎖アルキルベタイン型界面活性剤及び
成分（Ｂ）：一般式（２）

［式中、Ｒ４は炭素数８〜１５の直鎖状若しくは分岐鎖状のアルキル基又はアルケニル基を表す。Ｒ５及びＲ６は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。］で表される中鎖アルキルベタイン型界面活性剤及び／又は
一般式（３）

［式中、Ｒ７は炭素数７〜２１の直鎖状若しくは分岐鎖状のアルキル基又はアルケニル基を表す。Ｒ８は水素原子又は炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基を表す。Ｒ９及びＲ１０は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。ｐは、１〜４の整数を表す。］で表されるアミドアルキルベタイン型界面活性剤を含有する界面活性剤組成物。 (Claim 7)
Component (A): General formula (1)

[Wherein, R 1 represents a linear or branched alkyl group or alkenyl group having 16 to 22 carbon atoms. R2 and R3 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. ] Long-chain alkylbetaine type | mold surfactant and component (B) which are represented by General formula (2)

[Wherein, R 4 represents a linear or branched alkyl group or alkenyl group having 8 to 15 carbon atoms. R5 and R6 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. ] A medium chain alkyl betaine type surfactant represented by the general formula (3)

[Wherein R 7 represents a linear or branched alkyl group or alkenyl group having 7 to 21 carbon atoms. R8 represents a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms. R9 and R10 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. p represents an integer of 1 to 4. ] The surfactant composition containing the amide alkyl betaine type | mold surfactant represented by these.

(Section 8)
Item 8. The surfactant composition according to Item 7, wherein the content ratio of the component (A) and the component (B) is in the range of (A) / (B) = 1/9 to 7/3 (weight ratio). object.

［式中、Ｒ１は炭素数１６〜２２の直鎖状若しくは分岐鎖状のアルキル基を表す。Ｒ２及びＲ３は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。］で表される長鎖アルキルベタイン型界面活性剤に対して、
成分（Ｂ）：
一般式（２）

［式中、Ｒ４は炭素数８〜１５の直鎖状若しくは分岐鎖状のアルキル基又はアルケニル基を表す。Ｒ５及びＲ６は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。］で表される中鎖アルキルベタイン型界面活性剤及び／又は
一般式（３）

［式中、Ｒ７は炭素数７〜２１の直鎖状若しくは分岐鎖状のアルキル基又はアルケニル基を表す。Ｒ８は水素原子又は炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基を表す。Ｒ９及びＲ１０は、同一又は異なって、それぞれ炭素数１〜３の直鎖状若しくは分岐鎖状のアルキル基又はヒドロキシエチル基を表す。ｐは、1〜４の整数を表す。］で表されるアミドアルキルベタイン型界面活性剤を含有せしめることにより、前記成分（Ａ）の長鎖アルキルベタイン型界面活性剤のハンドリング性を向上させる方法。 (Claim 9)
Component (A): General formula (1)

[Wherein, R 1 represents a linear or branched alkyl group having 16 to 22 carbon atoms. R2 and R3 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. ] For the long-chain alkylbetaine surfactant represented by
Ingredient (B):
General formula (2)

[Wherein, R 4 represents a linear or branched alkyl group or alkenyl group having 8 to 15 carbon atoms. R5 and R6 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. ] A medium chain alkyl betaine type surfactant represented by the general formula (3)

[Wherein R 7 represents a linear or branched alkyl group or alkenyl group having 7 to 21 carbon atoms. R8 represents a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms. R9 and R10 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. p represents an integer of 1 to 4. ] The handling property of the long-chain alkylbetaine-type surfactant of the said component (A) is improved by including the amide alkylbetaine-type surfactant represented by these.

(Section 10)
Item 10. The method according to Item 9, wherein the ratio of the component (B) to the component (A) is in the range of (A) / (B) = 1/9 to 7/3 (weight ratio).

According to the inventions described in the above items 1 to 6, the hair detergent composition of the present invention is excellent in the amount of foam, foam quality, fingering at the time of washing (at the time of washing the hair), and good at fingering even at the time of rinsing. And it is excellent in the unity feeling of the hair after drying. Furthermore, foam stability (foam persistence) is improved.
Moreover, according to the invention of said 7th-8th, the surfactant composition of this invention has the outstanding handling property. According to the inventions described in Items 9 to 10, the handling property of the long-chain alkylbetaine surfactant represented by the general formula (1) can be improved by the method of the present invention.

As described in the above items 1 to 6, the hair detergent composition containing the specific alkylbetaine surfactant gives good foam performance and a feeling of washing at the time of washing, and satisfies a good feeling at the time of rinsing. In addition, the hair feels good after drying.
That is, by including an alkylbetaine surfactant having a specific long alkyl chain as the component (A), the foam viscosity is increased, the foam density is increased, and a thick creamy foam is obtained. At the same time, it is possible to obtain a feeling of unity when touching and feeling excellent during washing, and excellent hair after drying.
In addition, as described in Items 7 to 8, the component (A) and the component (B) are alkyl betaine surfactants having a specific medium-chain alkyl chain and / or specific amidoalkyl betaine surfactants. By using a surfactant composition comprising: a composition having good handling properties can be obtained. As described in Items 9 to 10, the handling property of the component (A) can be improved by adding the component (B) to the component (A) long-chain alkylbetaine surfactant.
Hereinafter, the configuration of the present invention will be described in detail.

The hair cleaning composition of the present invention contains at least one selected from long-chain alkylbetaine surfactants represented by the general formula (1) of the component (A), and the component (A) is a foam. It is the main ingredient for improving the quality and imparting a feeling of unity to the hair after drying. In the long-chain alkylbetaine surfactant represented by the general formula (1), R1 in the general formula (1) is a linear or branched alkyl group or alkenyl group having 16 to 22 carbon atoms. A linear or branched alkyl group having preferably 16 to 18 carbon atoms is recommended. R2 and R3 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group, preferably a methyl group.

The content of component (A) is preferably 0.1% by weight or more, more preferably 1% or more, based on the total weight of the surfactant contained in the hair cleaning composition of the present invention. . By setting it as the range of the content, the effect can be exhibited more advantageously.

Specific examples of the long-chain alkylbetaine surfactant according to the present invention include palmityl dimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine, isostearyldimethylaminoacetic acid betaine, arachidyldimethylaminoacetic acid betaine, and behenyldimethylamino. Betaine acetate, palmityldi (hydroxyethyl) aminoacetic acid betaine, stearyldi (hydroxyethyl) aminoacetic acid betaine, isostearyldi (hydroxyethyl) aminoacetic acid betaine, arachidoyldi (hydroxyethyl) aminoacetic acid betaine, oleyldimethylaminoacetic acid betaine, behenyldi ( Hydroxyethyl) aminoacetic acid betaine and the like are exemplified. More preferably, palmityl dimethylaminoacetic acid betaine, stearyl dimethylaminoacetic acid betaine, and behenyldimethylaminoacetic acid betaine are recommended. These can be blended alone or in appropriate combination of two or more.
Among these, stearyldimethylaminoacetic acid betaine is particularly preferable from the viewpoint of improving foam quality and imparting a feeling of unity to the hair after drying.

The long-chain alkylbetaine surfactant according to the present invention is not particularly limited, and those that are commercially available or manufactured by a known method can be used. Examples of commercially available products include “Rikabion A-700” (manufactured by Shin Nippon Rika Co., Ltd., stearyl betaine), “Amphithol 86B” (manufactured by Kao Corp., stearyl betaine), and the like. Many manufacturers are also described in, for example, “2013 Chemical Product of 16373 (Issuing Office; Chemical Industry Daily, Issued on January 29, 2013)”.

The component (B) according to the present invention is selected from the group consisting of a medium-chain alkylbetaine surfactant represented by the general formula (2) and an amide alkylbetaine surfactant represented by the general formula (3). It is at least one kind and contributes mainly to an improvement in the feeling of use at the time of shampooing, and also contributes to improving the handling properties of the component (A).

Among the components (B), in the medium-chain alkylbetaine surfactant represented by the general formula (2), R4 in the general formula (2) is a linear or branched alkyl group having 8 to 14 carbon atoms. Alternatively, an alkenyl group, preferably a linear or branched alkyl group having 12 to 14 carbon atoms is recommended. R5 and R6 are the same or different and are each a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group, preferably a methyl group. These can be blended alone or in appropriate combination of two or more.

Among the components (B), in the amide alkylbetaine surfactant represented by the general formula (3), R7 in the general formula (3) is a linear or branched alkyl group having 7 to 21 carbon atoms. Or an alkenyl group, preferably a linear or branched alkyl group or alkenyl group having 9 to 17 carbon atoms. R8 is a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms, preferably a hydrogen atom or a methyl group, more preferably a hydrogen atom. R9 and R10 are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group, preferably a methyl group. p is an integer of 1 to 4, preferably 2 or 3, more preferably 3.

Specific examples of the medium-chain alkylbetaine surfactant represented by the general formula (2) of the component (B) include n-octyldimethylaminoacetic acid betaine, 2-ethylhexyldimethylaminoacetic acid betaine, and n-decyldimethylaminoacetic acid. Examples include betaine, isodecyldimethylaminoacetic acid betaine, lauryldimethylaminoacetic acid betaine, coconut oil alkyldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, lauryldi (hydroxyethyl) aminoacetic acid betaine.
More preferably, lauryldimethylaminoacetic acid betaine, coconut oil alkyldimethylaminoacetic acid betaine, and myristyldimethylaminoacetic acid betaine are recommended.
These can be blended alone or in appropriate combination of two or more.

The medium-chain alkylbetaine surfactant is not particularly limited, and a commercially available product or a product produced by a known method can be used. Commercially available products include “Ricavion A-100” (manufactured by Shin Nippon Rika Co., Ltd., lauryl betaine), “Ricavion A-200” (manufactured by Shin Nippon Rika Co., Ltd., myristyl betaine), and “ Examples include “Amphitor 20BS” (Kao Co., Ltd., Lauryl Betaine), trade name “Nissan Anon BL” (manufactured by NOF Corporation, Lauryl Betaine), and the like. Many manufacturers are also described in, for example, “2013 Chemical Product of 16373 (Issuing Office; Chemical Industry Daily, Issued on January 29, 2013)”.

Specific examples of the amide alkyl betaine type surfactant represented by the general formula (3) of the component (B) include n-octanoic acid amidopropyldimethylaminoacetic acid betaine, 2-ethylhexanoic acid amidopropyldimethylaminoacetic acid. Betaine, n-decanoic acid amidopropyl dimethylaminoacetic acid betaine, isodecanoic acid amidopropyl dimethylaminoacetic acid betaine, lauric acid amidopropyl dimethylaminoacetic acid betaine, myristic acid amidopropyldimethylaminoacetic acid betaine, palmitic acid amidopropyl dimethylaminoacetic acid betaine, stearin Acid amidopropyl dimethylaminoacetic acid betaine, arachidic acid amidopropyldimethylaminoacetic acid betaine, behenic acid amidopropyldimethylaminoacetic acid betaine, oleic acid amidopropyl dimethyl ester L-aminoacetic acid betaine, linoleic acid amidopropyldimethylaminoacetic acid betaine, linolenic acid amidopropyldimethylaminoacetic acid betaine, isostearic acid amidopropyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, palm oil fatty acid amidopropyldimethylaminoacetic acid betaine , Palm kernel fatty acid amidopropyl dimethylaminoacetic acid betaine, soybean oil fatty acid amidopropyldimethylaminoacetic acid betaine, beef tallow fatty acid amidopropyldimethylaminoacetic acid betaine, lauric acid amidopropyldi (hydroxyethyl) aminoacetic acid betaine, oleic acid amidopropyldi ( Examples include hydroxyethyl) aminoacetic acid betaine, coconut fatty acid amidopropyldi (hydroxyethyl) aminoacetic acid betaine It is.
More preferably, lauric acid amidopropyldimethylaminoacetic acid betaine, myristic acid amidopropyldimethylaminoacetic acid betaine, palm oil fatty acid amidopropyldimethylaminoacetic acid betaine, palm kernel oil fatty acid amidopropyldimethylaminoacetic acid betaine is recommended.
These can be blended alone or in appropriate combination of two or more.

As the names of the exemplified compounds, various common names are used in this technical field. For example, according to the cosmetic ingredient display name (Japan Cosmetic Industry Association), lauramidopropyldimethylaminoacetic acid betaine is displayed as lauramidopropyl betaine, and coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine is displayed as cocamidopropyl betaine. In the present specification and claims, a compound name may be used as a compound name.

The amide alkyl betaine type surfactant is not particularly limited, and a commercially available product or a product produced by a known method can be used. Commercially available products include “Ricavion B-200” (manufactured by Shin Nippon Rika Co., Ltd., palm oil fatty acid amidopropyl acetate betaine), and “Ricavion B-300” (manufactured by Shin Nippon Rika Co., Ltd., lauric acid) Amidopropyl acetate betaine), trade name “Amphitol 20AB” (Kao Corporation, lauric acid amidopropyl acetate betaine), trade name “Amphitol 55AB” (Kao Corporation, palm oil fatty acid amidopropyl acetate betaine), product Name “Nissan Anon BDF-SF” (manufactured by NOF Corporation, palm oil fatty acid amidopropyl acetate betaine), trade name “Nissan Anon BDC-SF” (manufactured by NOF Corporation, palm kernel oil fatty acid amidopropyl acetate betaine) ), Trade name “Nissan Anon BDL-SF” (manufactured by NOF Corporation, amidopropyl acetate laurate) and the like. Many manufacturers are also described in, for example, “2013 Chemical Product of 16373 (Issuing Office; Chemical Industry Daily, Issued on January 29, 2013)”.

Among the medium chain alkyl betaine type surfactants represented by the general formula (2) of the component (B) and / or the amide alkyl betaine type surfactants represented by the general formula (3), an amide alkyl betaine type surfactant is used. Agents are preferred. Among the above-mentioned amide alkylbetaine surfactants, from the viewpoints of improving handling properties, fingering and feeling during rinsing, lauric acid amidopropyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine and myristic acid amidopropyl Dimethylaminoacetic acid betaine is particularly preferred.

When it is desired to give the hair cleaning composition according to the present invention more effectively, the amount of foam, foam quality, fingering at the time of shampooing, fingering at the time of rinsing, and feeling of unity of the hair after drying, By making the ratio of the content of A) and the component (B) in the range of (A) / (B) = 1/9 to 7/3 (weight ratio), the above effect can be easily exerted. Preferably, (A) / (B) = 3/7 to 7/3 (weight ratio).

Examples of anionic surfactants according to the present invention include alkyl sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene fatty acid monoethanolamide ether sulfates, succinic surfactants (polyoxyethylene sulfosuccinic acid monoalkyl ether esters) Salts), amino acid surfactants (N-acylglycine salts, N-acylsarcosine salts, N-acylalanine salts, N-acyl-N-methylalanine salts, N-acyl-L-glutamate salts, N-acyl salts) -L-aspartate, N-aliphatic acyl-N-methyl taurate, etc.), isethionate, monoalkyl phosphate, polyoxyethylene monoalkyl ether phosphate, and the like.

Specifically, for example, alkyl (C8-22) sulfate, polyoxyethylene (1-5) alkyl (C8-22) ether sulfate, polyoxyethylene having an aliphatic acyl group having 8 to 18 carbon atoms ( 1-5) Fatty acid monoethanolamide ether sulfate, polyoxyethylene (1-5) sulfosuccinic acid monoalkyl (or alkenyl) ether ester salt having an alkyl group (or alkenyl group) having 8 to 18 carbon atoms, carbon number 8 Α-olefin sulfonate having ˜20 lipophilic group, fatty acid salt derived from fatty acid having 8 to 18 carbon atoms, polyoxyethylene (1 to 7) having alkyl group (or alkenyl group) having 8 to 18 carbon atoms Alkyl (or alkenyl group) ether acetate, polyoxyethylene fatty acid monoethanol having an aliphatic acyl group having 8 to 18 carbon atoms Amide ether acetate, fatty acyl amino acid salt derived from fatty acid having 8 to 18 carbon atoms (N-acylglycine salt, N-acyl sarcosine salt, N-acylalanine salt, N-acyl-N-methylalanine salt, N- Acyl-L-glutamate, N-acyl-L-aspartate), N-aliphatic acyl-N-methyltaurine salt having an aliphatic acyl group having 8 to 18 carbon atoms, aliphatic having 8 to 18 carbon atoms Isethionate ester salt having acyl group, monoalkyl phosphate ester salt having alkyl group having 8 to 18 carbon atoms, polyoxyethylene (1-7) monoalkyl ether phosphate ester having alkyl group having 8 to 18 carbon atoms And anionic surfactants such as salts. Among them, polyoxyethylene (1-5) alkyl (C8-22) ether sulfate is preferable, and polyoxyethylene (2-3) sodium lauryl ether sulfate and polyoxyethylene (2-3) lauryl ether are particularly preferable. Potassium sulfate. Examples of the counter cation constituting the anionic surfactant include alkali metal ions (lithium ions, sodium ions, potassium ions, etc.), ammonium ions, organic ammonium ions, etc., preferably sodium ions and potassium ions are recommended. . In the present specification and claims, the numbers in parentheses following “oxyethylene” mean the average number of moles of oxyethylene groups added. The “C number” in parentheses following “alkyl” means the number of carbon atoms of the alkyl group.

Commercially available products include the trade name “Sinoline SPE-1300” (manufactured by Shin Nippon Rika Co., Ltd., polyoxyethylene (3) sodium lauryl sulfate), the trade name “Emar 20C” (manufactured by Kao Corporation, polyoxyethylene ( 3) Sodium lauryl ether sulfate) and the like. Many manufacturers are also described in, for example, “2013 Chemical Product of 16373 (Issuing Office; Chemical Industry Daily, Issued on January 29, 2013)”.

Nonionic surfactants according to the present invention include alkyl glyceryl ether, polyoxyalkylene alkyl ether, polyoxyalkylene alkyl phenyl ether, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene glycol fatty acid ester, alkyl polyglycoside, alkanolamide And polyoxyethylene fatty acid alkanolamides.

Specifically, for example, alkyl (C12-18) glyceryl ether, alkanolamide having an aliphatic acyl group having 8 to 18 carbon atoms, polyoxyethylene having an aliphatic acyl group having 8 to 18 carbon atoms (1 to 10) ) Fatty acid alkanolamide, polyoxyethylene (1-20) alkyl ether having an alkyl group having 8 to 18 carbon atoms, alkyl poly having an alkyl group having 8 to 14 carbon atoms or a polyoxyethylene (1-7) alkyl ether group And alkanolamides having an aliphatic acyl group having 8 to 18 carbon atoms, and polyoxyethylene (1-10) fatty acid alkanolamides having an aliphatic acyl group having 8 to 18 carbon atoms are particularly preferable. , Lauric acid monoethanolamide, myristic acid monoethanolamide, Oil fatty acid monoethanolamide, palm kernel oil fatty acid monoethanolamide, lauric acid diethanolamide, myristic acid diethanolamide, coconut oil fatty acid diethanolamide, palm kernel oil fatty acid diethanolamide, lauric acid isopropanolamide, myristic acid isopropanolamide, coconut oil fatty acid Isopropanolamide, palm kernel oil fatty acid isopropanolamide, polyoxyethylene laurate (1-6) monoethanolamide, polyoxyethylene myristate (1-6) monoethanolamide, coconut oil fatty acid polyoxyethylene (1-6) mono Ethanolamide, palm kernel oil fatty acid polyoxyethylene (1-6) monoethanolamide is recommended.

Commercially available products include “Amizole CDE” (manufactured by Kawaken Fine Chemical Co., Ltd., coconut oil fatty acid diethanolamide), and “Aminone L-02” (manufactured by Kao Corporation, coconut oil fatty acid diethanolamide). Illustrated. Further, for example, “Manufacturer of 2011 edition 15911 (Issuing place; Chemical Industry Daily, published on January 25, 2011)” describes many manufacturers.

When it is desired to give the hair cleaning composition of the present invention more effectively the foam amount, foam quality, fingering at the time of shampooing, fingering at the time of rinsing, and feeling of unity of the hair after drying, the above component (A ), Component (B), anionic surfactant and nonionic surfactant, preferably 0.1 to 20% by weight and 1 to 20% by weight, respectively, based on the total weight of the hair cleaning composition %, 0-20% by weight, 0-10% by weight (provided that the anionic surfactant and the nonionic surfactant are not 0% by weight at the same time), and the components (A) and (B) By making the total content of the anionic surfactant and the nonionic surfactant preferably in the range of 5 to 50% by weight, the above-mentioned effect is more easily exhibited.
Further, the content ratio of the component (A) to the component (B) is preferably in the range of (A) / (B) = 1/9 to 7/3 (weight ratio), more preferably (A) / When the range is (B) = 3/7 to 7/3 (weight ratio), the above-mentioned effect is more easily exhibited.

The dosage form of the hair detergent composition of the present invention can be selected from liquid, emulsion, cream, gel and foam depending on the desired usage.

As for pH (25 degreeC) of the cleaning composition for hair of this invention, 4-8 are preferable.

It does not specifically limit as a preparation method of the hair cleaning composition of this invention, The method currently used by this technical field is applicable, It can prepare by selecting a preparation method suitably. For example, a predetermined amount of the above-mentioned component (A), component (B), anionic surfactant, nonionic surfactant, and a desired amount of water (process agent, balance agent) and other components described below as required Can be easily prepared. The above-mentioned water is a general term including tap water, ion exchange water, distilled water, pure water, purified water and the like.
More specifically, after (i) an anionic surfactant and / or nonionic surfactant, if necessary, a desired amount of water (process agent, balance agent) and other components described below are mixed in advance, A method of mixing the component (A) and the component (B) to obtain a hair cleaning composition, or (ii) mixing the components (A) and (B) in advance to obtain the surfactant composition of the present invention. Examples of a method for preparing a hair cleaning composition by blending various components after the preparation of the hair. The procedure (ii) is a method recommended in that the handling property of the component (A) is improved.

The surfactant composition in which the component (B) is contained in the long-chain alkylbetaine surfactant represented by the general formula (1) of the component (A) is a composition having good handling properties.

As the surfactant composition of the present invention, when the surfactant having improved handling properties is more effectively used, the ratio of the content of the component (A) and the component (B) is preferably (A ) / (B) = 1/9 to 7/3 (weight ratio), more preferably (A) / (B) = 3/7 to 7/3 (weight ratio). By setting it as the said range, it becomes easy to exhibit the said effect more dominantly.

The pH (25 ° C.) of the surfactant composition of the present invention is preferably 4-8.

Component (A) and component (B) relating to the surfactant composition of the present invention have the same meanings as described above for the hair cleaning composition.

The method for preparing the surfactant composition of the present invention is not particularly limited, and a method used in this technical field can be applied, and the method can be appropriately selected and prepared. For example, a surfactant composition can be obtained by mixing an aqueous solution of component (A) and an aqueous solution of component (B) under heating and cooling to an appropriate temperature for use. The surfactant composition of the present invention essentially contains water, and particularly when the surfactant concentration of the component (A) is 10 to 80% by weight in aqueous solution, the effect of improving handling properties is high.

The method for improving the handleability of the long-chain alkylbetaine surfactant represented by the general formula (1) of the present invention is represented by the general formula (2) of the component (B) in the long-chain alkylbetaine surfactant. Medium chain alkyl betaine surfactants and / or amide alkyl betaine surfactants represented by the general formula (3). In particular, when the surfactant concentration of the component (A) is 10 to 80% by weight in aqueous solution, the effect of improving handling properties is high. As a method for improving handling properties more effectively, the content ratio of the component (A) and the component (B) is (A) / (B) = 1/9 to 7/3 (weight ratio). By making the range of (A) / (B) = 3/7 to 7/3 (weight ratio) more preferable, the above-mentioned effect can be more easily exhibited.

The component (A) and the component (B) relating to the method for improving the handleability of the long-chain alkylbetaine surfactant composition of the present invention have the same meaning as described above for the hair cleaning composition.

In addition to the anionic surfactant, nonionic surfactant, and components (A) to (B) according to the present invention, the hair cleaning composition and surfactant composition of the present invention generally include hair. “Other components” to be blended in the cleaning composition can be blended within a range where the effects of the present invention are exhibited.
Examples of other components include cationic surfactants, semipolar surfactants, and amphoteric surfactants excluding the anionic surfactants, nonionic surfactants, and components (A) to (B) according to the present invention. Agent, polyol, inorganic salt, oil component, cationic polymer, higher alcohol, pearlizing agent, emulsifier, dispersant, moisturizer, thickener, thickener, viscosity modifier, foam modifier, solvent, chelating agent, A pH adjuster, an antioxidant, an antibacterial / preservative, a pigment (colorant), other vitamins, a natural extract, a fragrance, a scrub agent, purified water, and the like can be blended.

Examples of the cationic surfactant include alkyltrimethylammonium chloride and dialkyldimethylammonium chloride.

Examples of the semipolar surfactant include amine oxides, and the amine oxides include octyl dimethylamine oxide, decyl dimethylamine oxide, lauryl dimethylamine oxide, myristyl dimethylamine oxide, palmityl dimethylamine oxide, stearyl dimethylamine oxide, and oleyl dimethyl. Examples include amine oxide, behenyl dimethylamine oxide, alkyl ether dimethylamine oxide, higher fatty acid amidopropylamine oxide, and ethylene oxide-added amine oxide.

As an amphoteric surfactant, an imidazolinium betaine-type amphoteric surfactant derived from a fatty acid having 8 to 18 carbon atoms, an N-alkylaminodiacetate having an alkyl group having 8 to 18 carbon atoms, and an N-alkylaminodipropion Examples thereof include N-alkyl amino acid type amphoteric surfactants such as acid salts and N-alkyldiaminoethylglycine salts, and sulfobetaine type amphoteric surfactants such as alkylhydroxysulfobetaine and fatty acid amidopropylhydroxysulfobetaine.

Examples of the polyol include glycerin, polyethylene glycol, polypropylene glycol, 1,3-butylene glycol, dipropylene glycol and the like.

Examples of inorganic salts include sodium sulfate and sodium chloride.

Examples of the cationic polymer include cationized polysaccharides, cationized polypeptides, acrylamide / acrylic acid / dimethyldiallylammonium chloride copolymers, polydimethylmethylenepiperidinium chloride, and the like.

Examples of the oil component include polyhydric alcohol fatty acid esters, polyoxyalkylene polyhydric alcohol fatty acid esters, vegetable oils, animal-derived oils, and mineral oils.

Examples of higher alcohols include stearyl alcohol, cholesterol, and phytosterol.

Examples of higher fatty acids include myristic acid, palmitic acid, stearic acid, and oleic acid.

Examples of the pearling agent include ethylene glycol distearic acid ester and mica.

Examples of the humectant include polyhydric alcohol, mucopolysaccharide, hyaluronic acid, chondroitin sulfate, chitosan, ceramide, cholesterol and the like.

Examples of the thickener include methyl cellulose, ethyl cellulose, gum arabic, polyvinyl alcohol, polyoxyethylene (60) cetyl stearyl diether and the like.

Examples of the solvent include ethanol and 1,3-butylene glycol.

Examples of the antioxidant include butylhydroxytoluene, tocopherol, phytic acid and the like.

Antibacterial / preservatives include benzoic acid, salicylic acid, sorbic acid, paraoxybenzoic acid ester, hexachlorophene and the like.

Other amino acids such as glycine and alanine or salts thereof, vitamin A and derivatives thereof, vitamin B2 and derivatives thereof, vitamin C and derivatives thereof, vitamin E, vitamin D, vitamin H, pantothenic acid, panthetin, and other vitamins , Nicotinic acid amide, benzyl nicotinate, γ-oryzanol, allantoin, glycyrrhizic acid (salt), glycyrrhetinic acid and its derivatives, organic solvents such as assembly, sugarcane, eucalyptus, alcohol, polyhydric alcohol, water, Natural extracts extracted with aqueous alcohol or the like, fragrances, scrub agents, purified water, and the like can be blended.

Hereinafter, the present invention will be specifically described with reference to examples, but is not limited thereto. In addition, the analysis and evaluation in each Example and a comparative example were performed with the following method. As the composition components used in Examples and the like, commercially available products, reagents or the following preparations were used.

[PH]
The pH of the hair cleaning composition of the present invention was measured at 25 ° C. using a pH meter (F-52 manufactured by Horiba, Ltd., electrode type 9615-10D).

[Foaming and foam stability]
20 g of a test solution obtained by diluting the hair cleansing composition of the present invention with ion-exchanged water to a surfactant concentration of 1% by weight was added to a mill container (Iwatani IFM-650D manufactured by Iwatani Corporation).
The inner diameter was about 6 cm × height was about 70 mm) and stirred for 10 seconds. After stirring, the mixture was allowed to stand as it was, and the height (mm) of each foamed part was measured at 25 ° C. after 1 minute and after 5 minutes. If the foam height is high, it can be evaluated that there is good foamability.
Moreover, the bubble retention was calculated from the numerical values using the following formula (1). The foam retention rate was used as an index of foam stability. It shows that it is excellent in foam stability (persistence of foam), so that the numerical value of foam retention is large.

Foam retention rate (%) = (bubble height after standing for 5 minutes / bubble height after standing for 1 minute) × 100 (1)

[Bubble density]
20 g of a test solution obtained by diluting the hair cleansing composition of the present invention with ion-exchanged water to a surfactant concentration of 1% by weight was added to a mill container (Iwatani IFM-650D manufactured by Iwatani Sangyo Co., Ltd.) About 70 mm) and stirred for 10 seconds. The foam part was taken out into a 20 ml beaker, the weight was measured at 25 ° C., and the foam density (g / ml) was calculated. It can be evaluated that a foam is creamy, so that a foam density is high.

[Bubble viscosity]
20 g of a test solution obtained by diluting the hair cleansing composition of the present invention with ion-exchanged water to a surfactant concentration of 1% by weight was added to a mill container (Iwatani IFM-650D manufactured by Iwatani Sangyo Co., Ltd.) About 70 mm) and stirred for 10 seconds. The foam portion was taken out into a 20 ml beaker, and the viscosity (mPa · s) was measured with a B-type viscometer at 25 ° C. It can be evaluated that the higher the foam viscosity is, the more the foam feels tight.

[Fashion test]
1. The foam quality, the amount of foam, and the used hair bundle (20 cm, 1.1 g) at the time of washing are immersed in a test solution obtained by diluting the hair detergent composition of the present invention five times with ion-exchanged water, and the hair pulled out from the test solution Sensory evaluation was performed about the foam quality, the amount of foam, and a feeling of use when the bundle was swallowed by hand and judged according to each of the following criteria. When the criterion is ◎, each sensory evaluation is judged to be excellent.
<Criteria for foam quality>
◎: Foam quality is creamy ○: Foam quality is slightly creamy △: Foam quality is slightly coarse ×: Foam quality is coarse <Criteria for foam amount>
◎: Large amount of foam ○: Slightly large amount of foam △: Slightly small amount of foam ×: Small amount of foam <Criteria for feeling of use>
◎: Smooth feel during washing and no finger catching feeling ○: Smooth feel during washing, little catching feeling on finger △: Smooth feel during washing, finger catching feeling Yes x: Feeling of washing is not smooth and there is a feeling of being caught on the finger

2. Usability during rinsing The washed hair bundle was rinsed with running water (tap water). Sensory evaluation was performed about the usability at that time. When the criterion is ◎, it is determined that the fingering property is good, and the usability during rinsing is determined to be good.
<Criteria>
◎: Smooth feeling when rinsing and no feeling of catching on fingers ○: Smooth feeling when rinsing and little feeling of catching on fingers △: Smooth feeling when rinsing and feeling of catching on fingers Yes x: The feeling of rinsing is not smooth and there is a feeling of being caught on the finger

3. Feeling of use and feeling after drying The above-mentioned hair bundle after rinsing was wiped off with a towel and then dried with a hair dryer. The sensory evaluation was performed about the combing property and unity feeling after drying, and it determined in accordance with the following each criteria. When the criterion is ◎, each sensory evaluation is judged to be excellent.
<Criteria for combing ability>
◎: Smooth feeling after drying, no feeling of catching on comb ○: Feeling smooth after drying, little feeling of catching on comb Δ: Smooth feeling after drying, feeling of catching on comb Yes x: The feeling after drying is not smooth and there is a feeling of being caught on the comb <Criteria for feeling of unity>
◎: Hair feeling after drying is very good ○: Hair feeling after drying is good △: Hair feeling after drying is slightly less ×: Hair feeling after drying is less

[Dynamic friction coefficient measurement]
Fifteen healthy hairs were placed on a slide glass having a length of 76 mm and a width of 26 mm at intervals of 1 mm. The slide glass provided with healthy hair was immersed in a 1% aqueous solution of polyoxyethylene (3) sodium lauryl ether sulfate for 1 hour. After the immersion, it was rinsed thoroughly with ion-exchanged water and dried in an atmosphere of 25 ° C. and humidity 60%. This was measured with a friction tester (KSE-SE, manufactured by Kato Tech Co., Ltd.), this operation was performed three times, and the average value was taken as the initial value of the dynamic friction coefficient of the healthy hair. This slide glass was immersed for 5 minutes in a test solution obtained by diluting the hair cleansing composition of the present invention 5 times with ion-exchanged water. Thereafter, it was thoroughly rinsed with ion-exchanged water and dried in an atmosphere of 25 ° C. and humidity 60%. The coefficient of dynamic friction was measured with a friction tester (KSE-SE manufactured by Kato Tech Co., Ltd.). This operation was performed three times, and the average value was taken as the dynamic friction coefficient of the healthy hair.
The smaller the dynamic friction coefficient, the better the fingering property.
Moreover, the friction reduction rate was computed from those numerical values using the following formula | equation (2). The greater the friction reduction rate, the better the fingering.

Friction reduction rate (%) =
{(Initial value dynamic coefficient of friction-Dynamic coefficient of friction after cleaning) / Initial value dynamic coefficient of friction} × 100 (2)

[viscosity]
The surfactant composition of the present invention was measured for viscosity (mPa · s) at 30 ° C. using a B-type viscometer (TV-10M manufactured by Toki Sangyo Co., Ltd.). The selection of the rotor shape and the number of rotations was performed under conditions suitable for the viscosity of the target composition. It can be evaluated that handling property is excellent, so that a viscosity is low.

[Examples 1-3 and Comparative Examples 1-2]
A hair detergent composition having the composition components and composition ratios (% by weight) shown in Table 1 was prepared. As an operation procedure, the aqueous solution of the component (A) was added to the aqueous solution of the component (B), and then various components were added. Then, after heating to 70 degreeC and mixing until the system became uniform, it cooled to 40 degreeC and prepared the cleaning composition for hair. The results of evaluation as a hair cleaning agent are shown in Table 1. “Wt%” is based on the active ingredient of the surfactant in the hair cleaning composition.

[Examples 4 to 9 and Comparative Example 3] Prepared according to the composition components and composition ratios (% by weight) shown in Table 2. Add an aqueous solution of component Rabion A-700 to component (B) aqueous solution (Ricavion A-100, B-300 or B-200), warm to 70 ° C., and mix until the system is uniform. Then, it cooled to 40 degreeC and prepared surfactant composition. The measurement results of the viscosity of the surfactant composition are shown in Table 2. “Wt%” is based on the active ingredient of the surfactant in the surfactant composition.

The compounds described in Tables 1 and 2 are as follows, and the numerical values in the tables indicate the pure components of the respective composition components. When the composition of the present invention was prepared using a commercial product in the form of an aqueous solution, each component was blended in terms of a pure component and mixed to prepare.

・ Ingredient (A): Stearyl betaine; trade name "Ricavion A-700" (manufactured by Shin Nippon Rika Co., Ltd., stearyldimethylaminoacetic acid betaine)
・ Ingredient (B): Lauryl betaine; trade name “Ricavion A-100” (manufactured by Shin Nippon Rika Co., Ltd., lauryl dimethylaminoacetic acid betaine)
-Component (B): Amidopropyl betaine laurate; trade name "Ricavion B-300" (manufactured by Shin Nippon Rika Co., Ltd., amide amidopropyl dimethylaminoacetate laurate)
・ Ingredient (B): palm oil fatty acid amidopropyl betaine; trade name “Ricavion B-200” (manufactured by Nippon Oil Chemical Co., Ltd., palm oil fatty acid amidopropyldimethylaminoacetic acid betaine)
・ Anionic surfactant: Laureth sulfate Na; trade name “Sinoline SPE-1300” (manufactured by Shin Nippon Rika Co., Ltd., polyoxyethylene (3) sodium lauryl ether sulfate)
・ Nonionic surfactant: Coconut oil fatty acid diethanolamide; trade name “STAHHOME DFC” (manufactured by NOF Corporation)
・ Cationized cellulose ・ Polyquaternium-10; Trade name “Kachinar HC-200” (manufactured by Toho Chemical Co., Ltd.)

From Table 1, by including the component (A) long-chain alkylbetaine type surfactant, it is excellent for fingering at the time of washing and rinsing even without a conditioning component such as cationized cellulose, and combs after drying. It can be seen that an excellent hair cleaner can be obtained. It can also be seen that the foam stability (foam persistence) is good.
In addition, from Table 2, component (A) long-chain alkyl betaine surfactant is mixed with component (B) medium-chain alkyl betaine surfactant or amide alkyl betaine surfactant, so that component (A) long-chain surfactant is mixed. It can be seen that the handling property of the alkylbetaine surfactant is improved.

Since the hair cleaning composition of the present invention is a good composition, it is a base composition in the field of hair cleaning products having various needs.

Claims (7)

Component (A): General formula (1)

[Wherein, R ¹ represents a linear or branched alkyl group or alkenyl group having 16 to 22 carbon atoms. R ² and R ³ are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. ]
A long-chain alkylbetaine-type surfactant represented by the formula ( B): General formula (3)

[Wherein, R ⁴ represents a linear or branched alkyl group or alkenyl group having 7 to 21 carbon atoms. R ⁵ represents a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms. R ⁶ and R ⁷ are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. p represents an integer of 1 to 4. ]
A betaine surfactant aqueous solution comprising an amidoalkyl betaine surfactant represented by The betaine type interface according to claim 1, wherein the content ratio of the component (A) and the component (B) is in the range of (A) / (B) = 3/7 to 7/3 (weight ratio). Activator aqueous solution. The aqueous betaine surfactant solution according to claim 1 or 2, wherein the concentration of the component (A) is 10 to 80% by weight. The betaine-type surfactant aqueous solution according to any one of claims 1 to 3, which has a viscosity at 30 ° C of 7.6 to 1655.0 mPa · s. Component (A): General formula (1)

[Wherein, R ¹ represents a linear or branched alkyl group or alkenyl group having 16 to 22 carbon atoms. R ² and R ³ are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. ]
A long-chain alkylbetaine surfactant represented by
A method for improving the handleability of an aqueous solution of
An aqueous solution of the component (A);
Ingredient (B): General formula (3)

[Wherein, R ⁴ represents a linear or branched alkyl group or alkenyl group having 7 to 21 carbon atoms. R ⁵ represents a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms. R ⁶ and R ⁷ are the same or different and each represents a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyethyl group. p represents an integer of 1 to 4. ]
Amide alkyl betaine type surfactant
To improve handling by mixing an aqueous solution of The method according to claim 5, wherein the mixing ratio of the component (A) and the component (B) is in the range of (A) / (B) = 3/7 to 7/3 (weight ratio). The method of Claim 5 or 6 whose density | concentration of the component (A) in the betaine-type surfactant aqueous solution which mixed the aqueous solution of the component (A) and the aqueous solution of the component (B) is 10 to 80 weight%.