JP5713482B2 - Anionic surfactant / cationic surfactant mixed composition and hair cosmetic - Google Patents
Anionic surfactant / cationic surfactant mixed composition and hair cosmetic Download PDFInfo
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- JP5713482B2 JP5713482B2 JP2009291237A JP2009291237A JP5713482B2 JP 5713482 B2 JP5713482 B2 JP 5713482B2 JP 2009291237 A JP2009291237 A JP 2009291237A JP 2009291237 A JP2009291237 A JP 2009291237A JP 5713482 B2 JP5713482 B2 JP 5713482B2
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- cationic surfactant
- surfactant
- anionic surfactant
- present
- mixed composition
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- 239000003093 cationic surfactant Substances 0.000 title claims description 88
- 239000003945 anionic surfactant Substances 0.000 title claims description 78
- 239000000203 mixture Substances 0.000 title claims description 47
- 239000002537 cosmetic Substances 0.000 title claims description 15
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- XZTJQQLJJCXOLP-UHFFFAOYSA-M sodium;decyl sulfate Chemical compound [Na+].CCCCCCCCCCOS([O-])(=O)=O XZTJQQLJJCXOLP-UHFFFAOYSA-M 0.000 claims description 3
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- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
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- FPVVYTCTZKCSOJ-UHFFFAOYSA-N Ethylene glycol distearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCOC(=O)CCCCCCCCCCCCCCCCC FPVVYTCTZKCSOJ-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
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- 206010040880 Skin irritation Diseases 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 241001061127 Thione Species 0.000 description 1
- BKZCZANSHGDPSH-KTKRTIGZSA-N [3-(2,3-dihydroxypropoxy)-2-hydroxypropyl] (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)COCC(O)CO BKZCZANSHGDPSH-KTKRTIGZSA-N 0.000 description 1
- NPTLAYTZMHJJDP-KTKRTIGZSA-N [3-[3-[3-[3-[3-[3-[3-[3-[3-(2,3-dihydroxypropoxy)-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropyl] (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)CO NPTLAYTZMHJJDP-KTKRTIGZSA-N 0.000 description 1
- CMPDPBDUZTUXAD-UHFFFAOYSA-N [3-hydroxy-2-(16-methylheptadecanoyloxy)propyl] 16-methylheptadecanoate Chemical compound CC(C)CCCCCCCCCCCCCCC(=O)OCC(CO)OC(=O)CCCCCCCCCCCCCCC(C)C CMPDPBDUZTUXAD-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
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- 150000003973 alkyl amines Chemical class 0.000 description 1
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- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
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- Cosmetics (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Colloid Chemistry (AREA)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
本発明は、カチオン界面活性剤、アニオン界面活性剤／カチオン界面活性剤混合組成物、及び毛髪用化粧料に関する。さらに詳しくは、アニオン界面活性剤と混合して水溶液として不溶性の塩の沈殿を形成しにくいカチオン界面活性剤、アニオン界面活性剤／カチオン界面活性剤混合組成物、及び毛髪用化粧料に関する。 The present invention relates to a cationic surfactant, an anionic surfactant / cationic surfactant mixed composition, and a cosmetic for hair. More specifically, the present invention relates to a cationic surfactant that hardly mixes with an anionic surfactant to form an insoluble salt precipitate as an aqueous solution, an anionic surfactant / cationic surfactant mixed composition, and a cosmetic for hair.
アニオン界面活性剤とカチオン界面活性剤を混合したアニオン界面活性剤／カチオン界面活性剤混合系は、親水基間の強い静電相互作用により２分子膜形成に適した擬似二鎖型の複合体を形成し、ベシクルの自発形成が起こったり、分子集合体形成濃度が著しく低下する等、それぞれの単独系水溶液の挙動とは全く異なる吸着挙動や溶液物性等を生じ、特異性を示すことが知られている。 An anionic surfactant / cationic surfactant mixed system in which an anionic surfactant and a cationic surfactant are mixed is a quasi-double-stranded complex suitable for bilayer formation by strong electrostatic interaction between hydrophilic groups. Spontaneous formation of vesicles occurs, and the concentration of molecular aggregates is significantly reduced, resulting in adsorption behavior and solution properties that are completely different from the behavior of each aqueous solution. ing.
また、かかる混合系において、アニオン界面活性剤とカチオン界面活性剤の混合比率を適切に選択することにより、繊維に対する界面活性剤の吸着量を制御することができるため、優れた柔軟性や帯電防止効果を可能とするが、このような効果は、毛髪に対して同様な効果が求められるヘアリンス等の毛髪用化粧料への応用が期待できる。加えて、アニオン界面活性剤／カチオン界面活性剤混合系は、カチオン界面活性剤単独よりも皮膚刺激が少なく、抗菌力にも優れることから殺菌消毒剤や殺菌洗浄剤等の殺菌剤等として使用することもできる。このようなアニオン界面活性剤／カチオン界面活性剤混合系としては、例えば、カチオン界面活性剤と、高度にアルコキシル化されたアニオン界面活性剤を含有する透明なヘアコンディショニング組成物が提供されている（例えば、特許文献１を参照。）。
In such a mixed system, the amount of surfactant adsorbed on the fiber can be controlled by appropriately selecting the mixing ratio of the anionic surfactant and the cationic surfactant. Although such an effect is possible, such an effect can be expected to be applied to hair cosmetics such as hair rinses that require the same effect on hair. In addition, the anionic surfactant / cationic surfactant mixed system is used as a bactericidal agent such as a bactericidal disinfectant and a bactericidal cleaning agent because it has less skin irritation and superior antibacterial activity than the cationic surfactant alone. You can also. As such an anionic surfactant / cationic surfactant mixed system, for example, a transparent hair conditioning composition containing a cationic surfactant and a highly alkoxylated anionic surfactant is provided ( For example, see
一方、アニオン界面活性剤とカチオン界面活性剤を併用した場合には、組成物中でコンプレックスを形成して、沈殿物やダマが発生して白濁するといった問題があり、特に、透明化粧料の場合は、透明にならず、製剤化が非常に困難であった。また、仮に透明とすることができたとしても、長期にわたって透明性を持続することが困難な場合があった。そこで、このようなコンプレックスの沈殿物やダマによる白濁を抑制するため、ジアルキルスルホコハク酸塩ないしアルキルエーテル硫酸エステル塩、モノアルキル型第４級アンモニウム塩、ポリグリセリン脂肪酸エステル並びに水を含有してなる毛髪用透明化粧料が提供されている（例えば、特許文献２を参照。）。 On the other hand, when an anionic surfactant and a cationic surfactant are used in combination, there is a problem that a complex is formed in the composition, and precipitates and lumps are generated, resulting in white turbidity. Was not transparent and was very difficult to formulate. Even if it can be made transparent, it may be difficult to maintain transparency over a long period of time. Therefore, in order to suppress white turbidity due to such complex precipitates and lumps, hair comprising dialkyl sulfosuccinate or alkyl ether sulfate, monoalkyl quaternary ammonium salt, polyglycerin fatty acid ester and water Transparent cosmetics are provided (see, for example, Patent Document 2).
ところで、アニオン界面活性剤／カチオン界面活性剤混合系について身体を対象とする毛髪用化粧料等の液体化粧料等として使用する場合、これらの界面活性剤のアルキル鎖の長さが短いと身体に対して刺激が強いため、アルキル鎖の長い界面活性剤を用いる必要があった。しかしながら、一般にアニオン界面活性剤とカチオン界面活性剤は水溶液中では相反する電荷挙動を示すため、アルキル鎖の合計が、例えば２６以上になった場合には、両者は結合して不溶性の塩を形成し、沈殿が発生してしまうといった問題があった。特に、使用するアニオン界面活性剤とカチオン界面活性剤が等モル付近であった場合には沈殿が発生しやすく、また、アニオン界面活性剤と炭素数が等しいカチオン界面活性剤を使用した場合にあっては、両者の対称性がよいためにこれも沈殿が生じやすかった。 By the way, when the anionic surfactant / cationic surfactant mixed system is used as liquid cosmetics such as cosmetics for hair intended for the body, if the length of the alkyl chain of these surfactants is short, On the other hand, since the stimulation was strong, it was necessary to use a surfactant having a long alkyl chain. However, in general, anionic surfactants and cationic surfactants exhibit opposite charge behaviors in aqueous solutions, so when the total alkyl chain is, for example, 26 or more, they combine to form an insoluble salt. However, there is a problem that precipitation occurs. In particular, precipitation is likely to occur when the anionic surfactant and cationic surfactant used are near equimolar, and there is a case where a cationic surfactant having the same number of carbon atoms as the anionic surfactant is used. In the meantime, because of the good symmetry between the two, precipitation was also likely to occur.
本発明は、前記の課題に鑑みてなされたものであり、等モル付近あるいは炭素数の等しいアニオン界面活性剤と混合した場合であっても沈殿の形成を長期的に抑制することができ、液体化粧料等の用途に適するカチオン界面活性剤を用いたアニオン界面活性剤／カチオン界面活性剤混合組成物、及び毛髪用化粧料を提供することにある。 The present invention has been made in view of the above problems, and can prevent the formation of precipitates in the long term even when mixed with an anionic surfactant in the vicinity of equimolarity or having the same number of carbon atoms. An object of the present invention is to provide an anionic surfactant / cationic surfactant mixed composition using a cationic surfactant suitable for cosmetics and the like, and a hair cosmetic.
前記の課題を解決するために、本発明に係るアニオン界面活性剤／カチオン界面活性剤混合組成物は、アニオン界面活性剤と、下記式（Ｉ）で表されるカチオン界面活性剤と、を含むことを特徴とする。 In order to solve the above-described problems, an anionic surfactant / cationic surfactant mixed composition according to the present invention includes an anionic surfactant and a cationic surfactant represented by the following formula (I). It is characterized by that.
本発明に係るアニオン界面活性剤／カチオン界面活性剤混合組成物は、前記アニオン界面活性剤とカチオン界面活性剤とのモル比が、アニオン界面活性剤／カチオン界面活性剤＝４０／６０〜６０／４０であることを特徴とする。 In the anionic surfactant / cationic surfactant mixed composition according to the present invention, the molar ratio of the anionic surfactant to the cationic surfactant is anionic surfactant / cationic surfactant = 40/60 to 60 / 40.
本発明に係るアニオン界面活性剤／カチオン界面活性剤混合組成物は、前記アニオン界面活性剤がアルキル硫酸塩であることを特徴とする。 The anionic surfactant / cationic surfactant mixed composition according to the present invention is characterized in that the anionic surfactant is an alkyl sulfate.
本発明に係るアニオン界面活性剤／カチオン界面活性剤混合組成物は、前記アルキル硫酸塩がドデシル硫酸ナトリウム（ＳＤＳ）、オクチル硫酸ナトリウム（ＳＯＳ）及びデシル硫酸ナトリウムよりなる群から選ばれる少なくとも１つからなることを特徴とする。 In the anionic surfactant / cationic surfactant mixed composition according to the present invention, the alkyl sulfate is at least one selected from the group consisting of sodium dodecyl sulfate (SDS), sodium octyl sulfate (SOS), and sodium decyl sulfate. It is characterized by becoming.
本発明に係るアニオン界面活性剤／カチオン界面活性剤混合組成物は、さらに水を含み、水溶液状にしたことを特徴とする。 The anionic surfactant / cationic surfactant mixed composition according to the present invention further comprises water and is in the form of an aqueous solution.
本発明に係る毛髪用化粧料は、前記した本発明のアニオン界面活性剤／カチオン界面活性剤混合組成物を含むことを特徴とする。 The cosmetic for hair according to the present invention is characterized by including the above-described mixed anionic surfactant / cationic surfactant composition of the present invention.
本発明を構成するカチオン界面活性剤は、式（Ｉ）で表される親水性の高いグリセリン基で修飾された四級アンモニウム塩からなるので、アニオン界面活性剤と組み合わせて使用して水溶液状とした場合には、組み合わされるアニオン界面活性剤とベシクルを形成する等により、不溶性の塩による沈殿等が形成されるのを長期的に抑制し、透明性に優れ、潤いと滑らかさ等を与えることができる界面活性剤を提供することができる。 The cationic surfactant constituting the present invention is composed of a quaternary ammonium salt modified with a highly hydrophilic glycerin group represented by the formula (I). In this case, by forming a vesicle with an anionic surfactant to be combined, long-term suppression of the formation of precipitates due to insoluble salts, etc., providing excellent transparency, moisture and smoothness, etc. Can be provided.
本発明に係るアニオン界面活性剤／カチオン界面活性剤混合組成物は、前記したカチオン界面活性剤を使用しているため、水と混合して水溶液状とした場合でも、組み合わされるアニオン界面活性剤とベシクル等を形成する等により、等モル付近あるいは炭素数の等しいアニオン界面活性剤と組み合わせた場合であっても、不溶性の塩による沈殿等が形成されるのを長期的に抑制できるとともに、透明性に優れ、潤いと滑らかさ等を与えることができる界面活性剤を提供することが可能となる。そして、本発明に係る混合組成物は、例えば、ヘアシャンプー、ヘアリンス等の毛髪用化粧料や、殺菌消毒剤や殺菌洗浄剤等の殺菌剤等に適用することができる。 Anionic surfactant / cationic surfactant mixture composition according to the present invention, due to the use of mosquito thione surfactant mentioned above, even if the water and mixed to an aqueous solution form, anionic surfactants combined In addition to the formation of vesicles and the like, it is possible to suppress the formation of precipitates due to insoluble salts in the long term even when combined with an anionic surfactant having an equimolar vicinity or the same number of carbon atoms, It is possible to provide a surfactant that is excellent in transparency and can provide moisture and smoothness. The mixed composition according to the present invention can be applied to hair cosmetics such as hair shampoos and hair rinses, and bactericides such as bactericidal disinfectants and bactericidal detergents.
本発明に係る毛髪用化粧料は、前記した本発明のアニオン界面活性剤／カチオン界面活性剤混合組成物を含むので、水溶液状とした場合でも不溶性の塩による沈殿等を長期的に抑制し、透明性に優れ、髪に潤いと滑らかさを与えることができる毛髪用化粧料を提供することができる。 Since the cosmetic for hair according to the present invention contains the anionic surfactant / cationic surfactant mixed composition of the present invention as described above, it suppresses precipitation due to insoluble salts in the long term even when it is in the form of an aqueous solution, It is possible to provide a cosmetic for hair that is excellent in transparency and can give moisture and smoothness to hair.
以下、本発明の一態様を説明する。本発明に係るカチオン界面活性剤は、下記式（Ｉ）で表される。 Hereinafter, one embodiment of the present invention will be described. The cationic surfactant according to the present invention is represented by the following formula (I).
式（Ｉ）で表される本発明に係るカチオン界面活性剤は、親水性の高いグリセリン基で修飾された四級アンモニウム塩である。式（Ｉ）中、Ｒ１は炭素数が６〜１８の直鎖または分岐鎖のアルキル基、Ｒ２はメチル基（ＣＨ３−）またはエチル基（Ｃ２Ｈ５−）、をそれぞれ示す。また、Ｘは塩素（Ｃｌ）、フッ素（Ｆ）、臭素（Ｂｒ）、ヨウ素（Ｉ）等のハロゲンを示す。なお、Ｒ１は炭素数が１２〜１６の直鎖または分岐鎖のアルキル基であることが好ましい。 The cationic surfactant according to the present invention represented by the formula (I) is a quaternary ammonium salt modified with a highly hydrophilic glycerin group. In the formula (I), R 1 represents a linear or branched alkyl group having 6 to 18 carbon atoms, and R 2 represents a methyl group (CH 3 —) or an ethyl group (C 2 H 5 —). X represents halogen such as chlorine (Cl), fluorine (F), bromine (Br), iodine (I) and the like. R 1 is preferably a linear or branched alkyl group having 12 to 16 carbon atoms.
式（Ｉ）で表されるカチオン界面活性剤は、例えば、スキーム１及びスキーム２にしたがって合成することができる。まず、所望のアルキル基（Ｒ１）及びメチル基またはエチル基（Ｒ２）を含むアミン（Ａ）と、所望のハロゲン（Ｘ）を含むジオール（Ｂ）を、等モルあるいはジオール（Ｂ）がやや過剰になるように、エタノール及び炭酸ナトリウム（Ｎａ２ＣＯ３）存在下で環流を行い（スキーム１）、減圧蒸留等で溶媒を除去し、中間生成物（Ｃ）を得るようにする。
The cationic surfactant represented by the formula (I) can be synthesized, for example, according to
（スキーム１）
次に、スキーム１で得られた中間生成物（Ｃ）と、スキーム１で使用した所望のハロゲンを含むジオール（Ｂ）を、ジオール（Ｂ）がやや過剰となるように、エタノールの存在下再び環流を行うようにする（スキーム２）。減圧蒸留等で溶媒を除去し、アセトン／エタノール混合溶媒等を用いて再結晶を行い精製し、乾燥を施すことが好ましい。
Next, the intermediate product (C) obtained in
（スキーム２）
式（Ｉ）で表される本発明に係るカチオン界面活性剤の具体例としては、例えば、Ｒ１の炭素数を１２として、Ｒ２をメチル基、ハロゲンを塩素（Ｃｌ）とした、下記式（Ｉ−ａ）で表されるジグリセリルメチルラウリルアンモニウムクロライド等が挙げられる。 Specific examples of the cationic surfactant according to the present invention represented by the formula (I) include, for example, the following formula in which R 1 has 12 carbon atoms, R 2 represents a methyl group, and halogen represents chlorine (Cl). And diglycerylmethyllauryl ammonium chloride represented by (Ia).
かかる式（Ｉ）で表される本発明に係るカチオン界面活性剤と組み合わせて、アニオン界面活性剤／カチオン界面活性剤混合組成物（以下、単に「混合組成物」とする場合もある。）を形成可能なアニオン界面活性剤としては、例えば、アルキル硫酸塩、脂肪酸塩、アルキルベンゼンスルホン酸塩、アルファスルホ脂肪酸エステル塩、アルキルポリオキシエチレン硫酸塩、モノアルキルリン酸塩等の従来公知のアニオン界面活性剤が挙げられ、これらのアニオン界面活性剤について、求められる用途に応じて適宜選択するようにすればよい。これらのアニオン界面活性剤は、１種を単独で使用してもよく、２種以上を組み合わせて使用するようにしてもよい。 In combination with the cationic surfactant according to the present invention represented by the formula (I), an anionic surfactant / cationic surfactant mixed composition (hereinafter sometimes simply referred to as “mixed composition”). Examples of anionic surfactants that can be formed include conventionally known anionic surfactants such as alkyl sulfates, fatty acid salts, alkylbenzene sulfonates, alpha sulfo fatty acid ester salts, alkyl polyoxyethylene sulfates, and monoalkyl phosphates. An agent may be used, and these anionic surfactants may be appropriately selected according to the intended use. These anionic surfactants may be used alone or in combination of two or more.
この中でも、臭気が少なく、生分解性が良好で環境に比較的やさしいという点で、アルキル硫酸塩を使用することが好ましい。また、使用される本発明に係るカチオン界面活性剤の炭素数（６〜１８）を考慮して、ドデシル硫酸ナトリウム（ＳＤＳ）（炭素数１２）、オクチル硫酸ナトリウム（ＳＯＳ）（炭素数８）、デシル硫酸ナトリウム（炭素数１０）等のアルキル硫酸塩等を使用することが好ましい。従来のアニオン界面活性剤／カチオン界面活性剤混合組成物にあっては、アニオン界面活性剤としてこれらのアルキル硫酸塩等を採用した場合には、カチオン界面活性剤とのアルキル基の合計が２６以上となることも多く、水溶液とした場合には不溶性の塩を形成し、沈殿が発生してしまうこともあったが、本発明にあっては、前記した式（Ｉ）に表されるカチオン界面活性剤と組み合わせて使用することにより、沈殿の形成を長期的に抑制することができる。同様に、アニオン界面活性剤とカチオン界面活性剤が等モル付近であった場合には沈殿が発生しやすく、また、アニオン界面活性剤と炭素数が等しいカチオン界面活性剤を使用した場合にあっては、両者の対称性がよいためにこれも沈殿が生じやすかったが、本発明にあっては、前記した式（Ｉ）に表されるカチオン界面活性剤と組み合わせて使用することにより、沈殿の形成を長期的に抑制することができる。 Among these, it is preferable to use an alkyl sulfate in that it has less odor, good biodegradability, and is relatively environmentally friendly. In consideration of the carbon number (6-18) of the cationic surfactant according to the present invention used, sodium dodecyl sulfate (SDS) (carbon number 12), sodium octyl sulfate (SOS) (carbon number 8), It is preferable to use alkyl sulfates such as sodium decyl sulfate (carbon number 10). In the conventional anionic surfactant / cationic surfactant mixed composition, when these alkyl sulfates are used as the anionic surfactant, the total number of alkyl groups with the cationic surfactant is 26 or more. In the case of an aqueous solution, an insoluble salt is formed and precipitation may occur. However, in the present invention, the cation interface represented by the above formula (I) is used. By using it in combination with an activator, the formation of precipitates can be suppressed for a long time. Similarly, when the anionic surfactant and the cationic surfactant are near equimolar, precipitation is likely to occur, and when an anionic surfactant and a cationic surfactant having the same number of carbon atoms are used, However, in the present invention, by using in combination with the cationic surfactant represented by the formula (I) described above, precipitation of the precipitate is likely to occur. Formation can be suppressed in the long term.
このように、本発明に係る式（Ｉ）で表されるカチオン界面活性剤を、アニオン界面活性剤と組み合わせて混合組成物とし、水と混合して水溶液とした場合に不溶性の塩の形成を抑制することができる理由としては、次のように考えられる。通常、沈殿を生じる際、界面活性剤混合組成物は曲率を持たない平板状ラメラとして沈殿を形成するが、本発明にあってはグリセリン基を修飾することにより水溶性と曲率を付与することができ、アニオン界面活性剤／カチオン界面活性剤混合系による水溶性低下の抑制並びに、平板状ラメラは曲率のあるベシクルとして水溶液中に存在できる。また、このベシクルのゼータ電位の絶対値は大きいので、ベシクル同士は静電的に反発し、凝集や沈殿は起こりにくい分散安定性の高いベシクル等が形成するものと考えられる。 Thus, when the cationic surfactant represented by the formula (I) according to the present invention is combined with an anionic surfactant to form a mixed composition and mixed with water to form an aqueous solution, an insoluble salt is formed. The reason why it can be suppressed is considered as follows. Usually, when the precipitation occurs, the surfactant mixed composition forms the precipitate as a flat lamellar having no curvature, but in the present invention, it is possible to impart water solubility and curvature by modifying the glycerin group. In addition, suppression of water solubility by an anionic surfactant / cationic surfactant mixed system and flat lamellae can exist in an aqueous solution as a curved vesicle. In addition, since the absolute value of the zeta potential of the vesicle is large, it is considered that vesicles having high dispersion stability are formed, in which vesicles repel each other electrostatically and aggregation and precipitation do not easily occur.
また、本発明に係る混合組成物は、水溶液とした場合にベシクル（界面活性剤の分子層が２枚重なっている集合体）等を形成して、沈殿の形成を抑制することができるが、かかるベシクルは、親水基で囲まれた内水相には水溶性物質を内包し、疎水基で囲まれた二分子膜内部には油溶性物質を内包するという特徴があり、生体膜類似構造を呈している。よって、形成されるベシクルを利用して薬物送達システム（ドラッグデリバリーシステム）、生体膜モデル、微小反応場等としての用途も期待できる。 In addition, the mixed composition according to the present invention can form vesicles (aggregates in which two molecular layers of surfactants are overlapped) or the like when an aqueous solution is formed, and can suppress the formation of precipitates. Such vesicles are characterized in that a water-soluble substance is included in the inner aqueous phase surrounded by hydrophilic groups, and an oil-soluble substance is included in the bilayer membrane surrounded by hydrophobic groups. Presents. Therefore, the use as a drug delivery system (drug delivery system), a biological membrane model, a micro reaction field, etc. using the formed vesicle can also be expected.
本発明に係る混合組成物において、前記したアニオン界面活性剤とカチオン界面活性剤とのモル比は、等モル（５０／５０）ないし等モル付近（例えば４５／５５〜５５／４５）を含む範囲で、必要とされる用途や目的に応じて適宜決定することができ、例えば、モル比をアニオン界面活性剤／カチオン界面活性剤＝１／９９〜９９／１の範囲とすることができ、モル比をアニオン界面活性剤／カチオン界面活性剤＝１／２０〜２０／１の範囲としておくことで液状が好適に維持される等のため好ましく、モル比をアニオン界面活性剤／カチオン界面活性剤＝１０／９０〜９０／１０とすることがより好ましく、３０／７０〜７０／３０とすることがさらに好ましく、４０／６０〜６０／４０とすることが特に好ましい。 In the mixed composition according to the present invention, the molar ratio of the anionic surfactant to the cationic surfactant described above is in a range including equimolar (50/50) to near equimolar (for example, 45/55 to 55/45). The molar ratio can be set within a range of, for example, anionic surfactant / cationic surfactant = 1/99 to 99/1. The ratio is preferably anionic surfactant / cationic surfactant = 1/20 to 20/1 because the liquid state is suitably maintained, and the molar ratio is preferably anionic surfactant / cationic surfactant = 10/90 to 90/10 is more preferable, 30/70 to 70/30 is further preferable, and 40/60 to 60/40 is particularly preferable.
本発明に係る混合組成物は、水溶液状、ゲル状、ペースト状、クリーム状等の種々の剤型に適用することができるが、本発明の効果である水溶液としても不溶性の塩を生じないという効果を最大限に発揮させるべく、剤型を水溶液状とすることが好ましい。 The mixed composition according to the present invention can be applied to various dosage forms such as an aqueous solution, a gel, a paste, and a cream, but it does not produce an insoluble salt even as an aqueous solution that is an effect of the present invention. In order to maximize the effect, the dosage form is preferably an aqueous solution.
本発明に係る混合組成物を水溶液状とするには、前記したアニオン界面活性剤及びカチオン界面活性剤に加えて、水を含むことにより、アニオン界面活性剤／カチオン界面活性剤混合水溶液とすることができ、毛髪用化粧料や殺菌消毒剤、殺菌洗浄剤等の用途に適することになる。かかる水の種類としては特に制限はなく、例えば、水道水、軟水、イオン交換水、純水、精製水等があげられるが、組成物の貯蔵安定性の点から、軟水、イオン交換水、純水、精製水等の使用が好ましい。 In order to make the mixed composition according to the present invention into an aqueous solution, in addition to the anionic surfactant and the cationic surfactant described above, water is included to obtain an aqueous solution of the anionic surfactant / cationic surfactant. It is suitable for uses such as hair cosmetics, disinfectants and disinfectants. The type of water is not particularly limited, and examples thereof include tap water, soft water, ion exchange water, pure water, and purified water. From the viewpoint of the storage stability of the composition, soft water, ion exchange water, pure water, etc. Use of water, purified water or the like is preferable.
本発明に係る混合組成物を、さらに水を含むようにして水溶液状とした場合において、前記したアニオン界面活性剤の含有量は、０．０１〜１５．０質量％とすることが好ましい。アニオン界面活性剤の含有量をかかる範囲にすることにより、例えば、本発明に係る混合組成物を毛髪用化粧料等とした場合には、潤いを持続させることができる。アニオン界面活性剤の含有量は、０．１〜１０．０質量％とすることが特に好ましい。 In the case where the mixed composition according to the present invention is further in the form of an aqueous solution containing water, the content of the anionic surfactant is preferably 0.01 to 15.0% by mass. By setting the content of the anionic surfactant in such a range, for example, when the mixed composition according to the present invention is used as a hair cosmetic or the like, moisture can be maintained. The content of the anionic surfactant is particularly preferably 0.1 to 10.0% by mass.
同様に、本発明に係る混合組成物を、さらに水を含むようにして液状とした場合において、前記したカチオン界面活性剤の含有量は、０．０１〜１５．０質量％とすることが好ましい。カチオン界面活性剤の含有量をかかる範囲にすることにより、例えば、本発明に係る混合組成物を毛髪用化粧料等とした場合には、滑らかさや柔らかさ等を持続させることができる。カチオン界面活性剤の含有量は、０．１〜１０．０質量％とすることが特に好ましい。 Similarly, in the case where the mixed composition according to the present invention is made liquid by further containing water, the content of the cationic surfactant is preferably 0.01 to 15.0% by mass. By setting the content of the cationic surfactant in such a range, for example, when the mixed composition according to the present invention is used as a hair cosmetic or the like, smoothness and softness can be maintained. The content of the cationic surfactant is particularly preferably 0.1 to 10.0% by mass.
水の含有量としては、水溶液状を維持した上で、本発明に係る混合組成物の奏する効果を妨げない範囲で適宜決定すればよいが、概ね２０．０〜９５．０質量％とすることが好ましく、４０．０〜９０．０質量％とすることが特に好ましい。また、前記したアニオン界面活性剤及びカチオン界面活性剤、及び下記に示した添加剤を除いた残部とするようにしてもよい。 The water content may be appropriately determined within a range that does not impede the effect of the mixed composition according to the present invention while maintaining the aqueous solution state, but should be approximately 20.0 to 95.0% by mass. Is preferably 40.0 to 90.0% by mass. Moreover, you may make it be the remainder except the above-mentioned anionic surfactant and cationic surfactant, and the additive shown below.
本発明に係る混合組成物には、必要により、本発明の目的及び効果に影響を与えない範囲において、所望の用途等に併せて種々の添加剤を加えることができる。添加剤としては、例えば、通常の身体用液体洗浄剤組成物に用いられる成分、例えばエタノール、イソプロパノール、ｎ−プロパノール等の低級アルコール類、プロピレングリコール、グリセリリン、１，３−ブチレングリコール、ジプロピレングリコール、グリセリン、ソルビトール等の多価アルコール類、グアーガム等の植物由来の多糖類、キサンタンガム等の微生物由来の多糖類、ヒドロキシプロピルセルロース、カルボキシメチルセルロース等のセルロース類、分子内にポリオキシエチレン鎖を有するエステルあるいはエーテル系化合物、アクリル酸重合体あるいはアクリル酸／メタクリル酸エステル共重合体等のカルボキシビニルポリマー類等の増粘剤、カチオン化セルロース等のカチオンポリマー、シリコーン化合物及びその誘導体等のコンディショニング成分、エチレングリコールジステアレート等のパール化剤、前記した特定のカチオン界面活性剤やアニオン界面活性剤以外の界面活性剤（例えば、アルキルポリグリコシド、ポリオキシエチレンアルキルエーテル等の非イオン性界面活性剤、アミドプロピルベタイン、アルキルアミンオキシド、ヒドロキスルホベタイン等の両性界面活性剤等）、染料、顔料等の着色剤、酢酸、クエン酸、リンゴ酸、乳酸、水酸化ナトリウム、水酸化カリウム、有機アミン類等のｐＨ調整剤、塩化ナトリウム、硫酸ナトリウム等の無機塩類、植物エキス類、防腐剤、キレート剤、ビタミン剤、抗炎症剤、抗ふけ剤、香料、紫外線吸収剤、酸化防止剤等が挙げられ、その用途や目的等に応じて適宜添加することができる。 If necessary, various additives can be added to the mixed composition according to the present invention within a range that does not affect the purpose and effect of the present invention in accordance with a desired application. Additives include, for example, components used in normal body liquid detergent compositions, for example, lower alcohols such as ethanol, isopropanol, n-propanol, propylene glycol, glycerin, 1,3-butylene glycol, dipropylene glycol , Polyhydric alcohols such as glycerin and sorbitol, polysaccharides derived from plants such as guar gum, polysaccharides derived from microorganisms such as xanthan gum, celluloses such as hydroxypropylcellulose and carboxymethylcellulose, esters having a polyoxyethylene chain in the molecule Or ether compounds, thickeners such as carboxyvinyl polymers such as acrylic acid polymers or acrylic acid / methacrylic acid ester copolymers, cationic polymers such as cationized cellulose, silicone compounds and derivatives thereof Conditioning components such as body, pearling agents such as ethylene glycol distearate, surfactants other than the above-mentioned specific cationic surfactants and anionic surfactants (for example, non-polyalkylglycosides, polyoxyethylene alkyl ethers, etc. Ionic surfactants, amphoteric surfactants such as amidopropyl betaine, alkylamine oxide, and hydroxysulfobetaine), colorants such as dyes and pigments, acetic acid, citric acid, malic acid, lactic acid, sodium hydroxide, hydroxide PH adjusters such as potassium and organic amines, inorganic salts such as sodium chloride and sodium sulfate, plant extracts, preservatives, chelating agents, vitamins, anti-inflammatory agents, anti-dandruff agents, fragrances, UV absorbers, antioxidants An agent etc. are mentioned, and it can add suitably according to the use, the purpose, etc.
また、毛髪用化粧料等に用いる場合は、透明性を持続させるため、ポリグリセリン酸脂肪酸エステルを添加するようにしてもよい。具体的には、例えば、モノカプリル酸ジグリセリル、モノカプリル酸デカグリセリル、モノカプリン酸ヘキサグリセリル、モノラウリン酸テトラグリセリル、モノラウリン酸ヘキサグリセリル、モノラウリン酸デカグリセリル、モノラウリン酸ポリ（４〜１０）グリセリル、モノミリスチン酸デカグリセリル、モノステアリン酸デカグリセリル、モノステアリン酸ポリ（２〜１０）グリセリル、ジイソステアリン酸ポリ（２〜１０）グリセリル、モノオレイン酸ジグリセリル、モノオレイン酸ヘキサグリセリル、モノオレイン酸デカグリセリル、モノオレイン酸ポリ（２〜１０）グリセリル、デカオレイン酸デカグリセリル、モノベヘン酸デカグリセリル等が挙げられ、求められる用途に応じて適宜選択するようにすればよい。これらのポリグリセリン酸脂肪酸エステルは、１種を単独で使用してもよく、２種以上を組み合わせて使用するようにしてもよい。ポリグリセリン酸脂肪酸エステルの含有量は、例えば、０．０１〜１０．０質量％とすることが好ましく、０．１〜５．０質量％とすることが特に好ましい。 Moreover, when using for cosmetics for hair etc., in order to maintain transparency, you may make it add polyglyceric acid fatty acid ester. Specifically, for example, diglyceryl monocaprylate, decaglyceryl monocaprylate, hexaglyceryl monocaprate, tetraglyceryl monolaurate, hexaglyceryl monolaurate, decaglyceryl monolaurate, poly (4-10) glyceryl monolaurate, Decaglyceryl monomyristate, decaglyceryl monostearate, poly (2-10) glyceryl monostearate, poly (2-10) glyceryl diisostearate, diglyceryl monooleate, hexaglyceryl monooleate, decaglyceryl monooleate , Poly (2 to 10) glyceryl monooleate, decaglyceryl dekaleate, decaglyceryl monobehenate, and the like, and may be appropriately selected according to the intended use. These polyglyceric acid fatty acid esters may be used alone or in combination of two or more. For example, the content of the polyglyceric acid fatty acid ester is preferably 0.01 to 10.0% by mass, and particularly preferably 0.1 to 5.0% by mass.
以上説明したように、本発明に係るアニオン界面活性剤／カチオン界面活性剤混合組成物は、カチオン界面活性剤として、式（Ｉ）で表される親水性の高いグリセリン基で修飾された四級アンモニウム塩を使用しているため、水と混合して水溶液状とした場合でも、組み合わされるアニオン界面活性剤とベシクルを形成する等により、等モル付近あるいは炭素数の等しいアニオン界面活性剤と組み合わせた場合であっても、不溶性の塩による沈殿等が形成されるのを長期的に抑制でき、透明性に優れ、潤いと滑らかさを与えることができる界面活性剤を提供することができる。 As described above, the anionic surfactant / cationic surfactant mixed composition according to the present invention is a quaternary modified with a highly hydrophilic glycerin group represented by the formula (I) as a cationic surfactant. Since ammonium salt is used, even when mixed with water to form an aqueous solution, it is combined with an anionic surfactant having an equimolar or equal carbon number by forming a vesicle with the anionic surfactant to be combined. Even in this case, it is possible to provide a surfactant that can suppress the formation of precipitates or the like due to insoluble salts for a long period of time, has excellent transparency, and can provide moisture and smoothness.
そして、かかる本発明に係るアニオン界面活性剤／カチオン界面活性剤混合組成物は、ヘアシャンプー、ヘアリンス等の毛髪用化粧料や、殺菌消毒剤や殺菌洗浄剤等の殺菌剤等に適用することができる。かかる毛髪用化粧料等は、例えば、本発明に係る混合組成物と、水を含むことにより水溶液状の毛髪用化粧料等となり、含有量も前記したものに倣って選定すればよい。また、前記したように、透明性を維持するために、ポリグリセリン酸脂肪酸エステルを添加することが好ましく、本発明の混合組成物、水、及び脂肪酸エステルの残部の主成分を、エタノール等の低級アルコール類としてもよい。 The anionic surfactant / cationic surfactant mixed composition according to the present invention can be applied to hair cosmetics such as hair shampoos and hair rinses, and bactericides such as bactericidal disinfectants and bactericidal detergents. it can. Such hair cosmetics and the like are, for example, water-based hair cosmetics and the like by containing the mixed composition according to the present invention and water, and the content may be selected according to the above. Further, as described above, in order to maintain transparency, it is preferable to add a polyglyceric acid fatty acid ester, and the main components of the mixed composition of the present invention, water, and the fatty acid ester are lower components such as ethanol. Alcohols may be used.
なお、以上説明した態様は、本発明の一態様を示したものであって、本発明は、前記し
た実施形態に限定されるものではなく、本発明の構成を備え、目的及び効果を達成できる
範囲内での変形や改良が、本発明の内容に含まれるものであることはいうまでもない。ま
た、本発明を実施する際における具体的な構造及び形状等は、本発明の目的及び効果を達
成できる範囲内において、他の構造や形状等としても問題はない。本発明は前記した各実
施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形や改良は、本
発明に含まれるものである。
The aspect described above shows one aspect of the present invention, and the present invention is not limited to the above-described embodiment, and has the configuration of the present invention and can achieve the objects and effects. It goes without saying that modifications and improvements within the scope are included in the content of the present invention. Further, the specific structure, shape, and the like in carrying out the present invention are not problematic as other structures, shapes, and the like as long as the objects and effects of the present invention can be achieved. The present invention is not limited to the above-described embodiments, and modifications and improvements within the scope that can achieve the object of the present invention are included in the present invention.
例えば、式（Ｉ）で表される本発明に係るカチオン界面活性剤を合成する手段として、スキーム１及びスキーム２で表される合成方法を用いて説明したが、スキーム１及びスキーム２はかかるカチオン界面活性剤を合成する手段の一例であり、これらのスキームに従わない合成方法を用いるようにしてもよい。
その他、本発明の実施の際の具体的な構造及び形状等は、本発明の目的を達成できる範
囲で他の構造等としてもよい。
For example, as a means for synthesizing the cationic surfactant according to the present invention represented by the formula (I), the synthesis method represented by
In addition, the specific structure, shape, and the like in the implementation of the present invention may be other structures as long as the object of the present invention can be achieved.
以下、実施例及び比較例に基づき本発明をさらに詳細に説明するが、本発明は、かかる実施例等に何ら限定されるものではない。なお、下記実施例のうち、実施例１の記載は、参考例１を示す。 EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example and a comparative example, this invention is not limited to this Example etc. at all. In addition, description of Example 1 shows the reference example 1 among the following Examples.
［実施例１］
カチオン界面活性剤の調製：
Ｎ−メチルアルキルアミン（Ｎ−ｍｅｔｈｙｌ ａｌｋｙｌａｍｉｎｅ）と３−クロロ−１，２プロパンジオール（３−ｃｈｌｏｒｏ−１，２−ｐｒｏｐａｎｅｄｉｏｌ）をほぼ等モル量（後者がやや過剰モル量）になるように、反応溶媒としてエタノール５０ｍＬ、Ｎａ２ＣＯ３１０．６ｇを加え、８０℃で８時間還流操作を行った。反応後、フィルター操作を行い、減圧蒸留により溶媒を除去して、中間生成物であるモノグリセリルメチルラウリルアミンを得た。
[Example 1]
Preparation of cationic surfactant:
N-methyl alkylamine (N-methyl alkylamine) and 3-chloro-1,2-propanediol (3-chloro-1,2-propanediol) are approximately equimolar amounts (the latter is slightly excess molar amount), As a reaction solvent, 50 mL of ethanol and 10.6 g of Na 2 CO 3 were added, and refluxing was performed at 80 ° C. for 8 hours. After the reaction, a filter operation was performed, and the solvent was removed by distillation under reduced pressure to obtain monoglycerylmethyllaurylamine as an intermediate product.
得られた中間生成物と、３−クロロ−１，２プロパンジオール（３−ｃｈｌｏｒｏ−１，２−ｐｒｏｐａｎｅｄｉｏｌ）を後者がやや過剰モル量になるよう、反応溶媒エタノールを用いて、９０℃で３６時間還流操作を行った。反応後、減圧蒸留により溶媒を除去し、アセトン／エタノール混合溶媒により再結晶を行い、精製後は真空雰囲気下で乾燥を行うことにより、式（Ｉ−ａ）で表される本発明のカチオン界面活性剤（ジグリセリルメチルラウリルアンモニウムクロライド）の白色粉末を調製した。 The obtained intermediate product and 3-chloro-1,2-propanediol (3-chloro-1,2-propandiol) were mixed at 90 ° C. using ethanol as a reaction solvent so that the latter was slightly in excess molar amount. The reflux operation was performed for a time. After the reaction, the solvent is removed by distillation under reduced pressure, recrystallization is performed with an acetone / ethanol mixed solvent, and after purification, drying is performed in a vacuum atmosphere, whereby the cation interface of the present invention represented by the formula (Ia) is obtained. A white powder of activator (diglyceryl methyl lauryl ammonium chloride) was prepared.
実施例１で得られた本発明のカチオン界面活性剤について、ＦＡＢ−ＭＳスペクトルの測定結果を図１に示す。図１に示すように、ＦＡＢ−ＭＳスペクトル結果からフラグメントイオン及び中性分子Ｍから電子（対イオン）が１個失われたＭ＋のピークが見られ（Ｍ＋＝３４８）、本発明のカチオン界面活性剤において４Ｎ＋ＯＨが形成されていることが確認できた。 About the cationic surfactant of this invention obtained in Example 1, the measurement result of FAB-MS spectrum is shown in FIG. As shown in FIG. 1, the M + peak in which one electron (counter ion) was lost from the fragment ion and the neutral molecule M was seen from the FAB-MS spectrum result (M + = 348), and the cation of the present invention It was confirmed that 4N + OH was formed in the surfactant.
また、実施例１で得られた本発明のカチオン界面活性剤について、１Ｈ−ＮＭＲの測定結果を図２に示す（なお、図２におけるアルファベットに対応する基を示した図を図３に示す。）。図２に示すように、ジグリセリルメチルラウリルアンモニウムクロライドを構成する基についてのピークが認められた。この結果より、前記の操作によりジグリセリルメチルラウリルアンモニウムクロライドが合成されたことが確認できた。 Moreover, about the cationic surfactant of this invention obtained in Example 1, the measurement result of < 1 > H-NMR is shown in FIG. 2 (The figure which showed the group corresponding to the alphabet in FIG. 2 is shown in FIG. .) As shown in FIG. 2, the peak about the group which comprises diglyceryl methyl lauryl ammonium chloride was recognized. From this result, it was confirmed that diglyceryl methyl lauryl ammonium chloride was synthesized by the above operation.
そして、実施例１で得られた本発明のカチオン界面活性剤について、元素分析の測定結果を表１に示す。表１に示すように、誤差が±０．４％の範囲で理論値と一致していることから、純度の高い生成物が得られたことが確認できた。 And about the cationic surfactant of this invention obtained in Example 1, the measurement result of an elemental analysis is shown in Table 1. As shown in Table 1, since the error agreed with the theoretical value in the range of ± 0.4%, it was confirmed that a product with high purity was obtained.
（元素分析の測定結果）
［実施例２］
アニオン界面活性剤／カチオン界面活性剤混合水溶液の調製：
実施例１で得られたカチオン界面活性剤と、アニオン界面活性剤であるドデシル硫酸ナトリウム（ＳＤＳ）を等モルで混合して、水溶液状のアニオン界面活性剤／カチオン界面活性剤混合組成物（アニオン界面活性剤／カチオン界面活性剤混合水溶液）を調製し、沈殿形成の有無を確認した。
[Example 2]
Preparation of an anionic surfactant / cationic surfactant mixed aqueous solution:
The cationic surfactant obtained in Example 1 and the anionic surfactant sodium dodecyl sulfate (SDS) were mixed in equimolar amounts to form an aqueous anionic surfactant / cationic surfactant mixed composition (anion). (Surfactant / cationic surfactant mixed aqueous solution) was prepared and the presence or absence of precipitate formation was confirmed.
具体的には、アニオン界面活性剤とカチオン界面活性剤のそれぞれと水を０．０１ｍｏｌ／Ｌで混合し、アニオン界面活性剤水溶液及びカチオン界面活性剤水溶液をそれぞれ調製した後、両者をモル比が等モルとなるようにして混合して、アニオン界面活性剤／カチオン界面活性剤混合水溶液とした。なお、混合水溶液全体が均一にするため、混合後にボルテックスミキサーで約３秒攪拌した。かかるボルテックスミキサーで撹拌したこと以外は、超音波等といったいかなる外力も加えず、２５℃とした恒温槽で静置し、混合水溶液の沈殿の形成の有無を目視で観察した。 Specifically, each of an anionic surfactant and a cationic surfactant and water are mixed at 0.01 mol / L to prepare an anionic surfactant aqueous solution and a cationic surfactant aqueous solution, respectively. An anionic surfactant / cationic surfactant mixed aqueous solution was prepared by mixing so as to be equimolar. In addition, in order to make the whole mixed aqueous solution uniform, it stirred for about 3 seconds with the vortex mixer after mixing. Except for stirring with such a vortex mixer, no external force such as ultrasonic waves was applied, and the mixture was allowed to stand in a thermostatic bath set at 25 ° C., and the presence or absence of the formation of the mixed aqueous solution was visually observed.
なお、比較例として、カチオン界面活性剤として実施例１のカチオン界面活性剤とアルキルの鎖長が等しい（炭素数が１２）塩化ドデシルトリメチルアンモニウム（ＤＴＡＣ）（Ｃ１２Ｈ２５（ＣＨ３）３Ｎ＋Ｃｌ−）を用いて、同様にアニオン界面活性剤／カチオン界面活性剤混合水溶液を調製し、比較・評価した。 As a comparative example, dodecyltrimethylammonium chloride (DTAC) (C 12 H 25 (CH 3 ) 3 N) has the same chain length as that of the cationic surfactant of Example 1 as the cationic surfactant. Similarly, an anionic surfactant / cationic surfactant mixed aqueous solution was prepared using + Cl − ), and compared and evaluated.
実施例１で得られた本発明のカチオン界面活性剤は、アニオン界面活性剤であるドデシル硫酸ナトリウム（ＳＤＳ）と混合し、アニオン界面活性剤／カチオン界面活性剤混合水溶液とした場合であっても、約３ヶ月以上にわたって分散安定性の高いベシクルとして存在し、沈殿の形成を抑制することができた。一方、比較例のカチオン界面活性剤（塩化ドデシルトリメチルアンモニウム）は、アニオン界面活性剤であるドデシル硫酸ナトリウムと等モル比で混合した場合、混合した直後に不溶性の塩による沈殿を形成した。 Even when the cationic surfactant of the present invention obtained in Example 1 is mixed with anionic surfactant sodium dodecyl sulfate (SDS) to form an anionic surfactant / cationic surfactant mixed aqueous solution. It was present as a vesicle having high dispersion stability for about 3 months or more, and the formation of precipitates could be suppressed. On the other hand, when the cationic surfactant (dodecyltrimethylammonium chloride) of the comparative example was mixed with an anionic surfactant sodium dodecyl sulfate at an equimolar ratio, a precipitate due to an insoluble salt was formed immediately after mixing.
本発明は、ヘアケア・ヘアメイク分野、医療分野等においてヘアシャンプー、ヘアリンス等の毛髪用化粧料や、殺菌消毒剤や殺菌洗浄剤等の殺菌剤等を提供する技術として有利に使用することができる。 INDUSTRIAL APPLICABILITY The present invention can be advantageously used as a technique for providing hair cosmetics such as hair shampoos and hair rinses, bactericides such as bactericidal disinfectants and bactericidal detergents in the hair care / hair makeup field, medical field, and the like.
Claims (6)
ル基またはエチル基、Ｘはハロゲン、をそれぞれ示す。） An anionic surfactant / cationic surfactant mixed composition comprising an anionic surfactant and a cationic surfactant represented by the following formula (I):
ＳＯＳ）及びデシル硫酸ナトリウムよりなる群から選ばれる少なくとも１つからなること
を特徴とする請求項３に記載のアニオン界面活性剤／カチオン界面活性剤混合組成物。 The alkyl sulfate is sodium dodecyl sulfate (SDS), sodium octyl sulfate (
4. The anionic surfactant / cationic surfactant mixed composition according to claim 3, comprising at least one selected from the group consisting of SOS) and sodium decyl sulfate.
性剤混合組成物を含むことを特徴とする毛髪用化粧料。 Claim 1 to hair cosmetic comprising the anionic surfactant / cationic surfactant mixture composition according to any one of claims 5.
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