JP2009249537A - Low irritative liquid cleaning composition - Google Patents

Low irritative liquid cleaning composition Download PDF

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JP2009249537A
JP2009249537A JP2008100470A JP2008100470A JP2009249537A JP 2009249537 A JP2009249537 A JP 2009249537A JP 2008100470 A JP2008100470 A JP 2008100470A JP 2008100470 A JP2008100470 A JP 2008100470A JP 2009249537 A JP2009249537 A JP 2009249537A
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alkyl ether
cleaning composition
carboxylic acid
liquid cleaning
ether carboxylic
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JP5057337B2 (en
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Shuichi Kameda
宗一 亀田
Mitsuo Miyazawa
三雄 宮澤
Junichi Kawada
純一 河田
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MORE COSMETICS KK
Kinki University
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Kinki University
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid cleaning composition which is very low irritative to skin and scalp and allows superior bubbling. <P>SOLUTION: The low irritative liquid cleaning composition includes alkyl ether carboxylic amino acid salt represented by the general formula (I): R<SP>1</SP>-O-(CH<SB>2</SB>CH<SB>2</SB>O)<SB>n</SB>CH<SB>2</SB>COOM (I), wherein R<SP>1</SP>presents saturated or unsaturated hydrocarbon group, n denotes a number of 1 to 5 and M presents lysine or histidine. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、高い起泡性を有し、皮膚および頭皮に対して極めて低刺激である液体洗浄組成物に関する。   The present invention relates to a liquid cleaning composition having high foaming properties and extremely low irritation to the skin and scalp.

皮膚および頭髪の洗浄組成物には、一般にアニオン性の界面活性剤を主成分としており、皮膚洗浄料では高級脂肪酸塩(石けん)を主にするもの、頭髪洗浄料ではアルキル硫酸塩、アルキルスルホン酸塩、アルキルエーテル硫酸塩等が用いられる。   Skin and hair cleaning compositions generally contain an anionic surfactant as the main component. Skin cleansing products are mainly composed of higher fatty acid salts (soaps), and hair cleaning products are alkyl sulfates and alkyl sulfonic acids. Salts, alkyl ether sulfates and the like are used.

しかしながら、石けん(脂肪酸塩)は、生分解性、安全性への問題は少ないが、硬水での洗浄性、溶解性が落ちるなどの欠点を持っており、またアルキル硫酸塩やアルキルスルホン酸塩、アルキルエーテル硫酸塩は往々に泡立ちや洗浄力に優れているが、刺激性の点で問題があった。   However, soap (fatty acid salt) has few problems with biodegradability and safety, but has drawbacks such as detergency in hard water, poor solubility, and alkyl sulfates and alkyl sulfonates, Alkyl ether sulfates are often excellent in foaming and detergency, but have problems in terms of irritation.

一方、アルカリ性界面活性剤のひとつであるアルキルエーテルカルボン酸のアルカリ金属塩、アルカリ土類金属塩、アンモニウム塩又はアルキロールアミン塩は高い起泡性を有し、かつ低刺激性であることが見出されている(特許文献1及び2を参照)。   On the other hand, an alkali metal salt, alkaline earth metal salt, ammonium salt or alkylolamine salt of alkyl ether carboxylic acid, which is one of alkaline surfactants, has high foaming properties and low irritation. (See Patent Documents 1 and 2).

しかし、アトピー性皮膚炎患者数およびアレルギー患者数は近年増加傾向にあり、化粧品や家庭用洗剤に配合される洗浄剤には、従来以上に皮膚や頭皮に対して低刺激である必要性がある。
特開昭60−158298号公報 特開2002−88396号公報
However, the number of patients with atopic dermatitis and the number of allergic patients has been increasing in recent years, and detergents used in cosmetics and household detergents need to be less irritating to the skin and scalp than before. .
JP-A-60-158298 JP 2002-88396 A

本発明は、前期事情に鑑みてなされたもので、皮膚および頭皮に極めて低刺激で、かつ良好な泡立ちである液体洗浄組成物を提供することを技術的課題とする。   The present invention has been made in view of the circumstances in the previous period, and an object of the present invention is to provide a liquid cleaning composition that has extremely low irritation and good foaming to the skin and scalp.

本発明者らは、上記課題を達成すべく鋭意研究を重ねた結果、アルキルエーテルカルボン酸のリシン及びヒスチジンの塩の水溶液が、従来のアルキルエーテルカルボン酸塩の水溶液と比較して優れた低刺激性を有し、また使用感でも従来以上のマイルドな使用感を与えられることを見出し、本発明を完成するに至った。   As a result of intensive studies to achieve the above-mentioned problems, the present inventors have found that an aqueous solution of an alkyl ether carboxylic acid lysine and a histidine salt is superior to a conventional aqueous solution of an alkyl ether carboxylate in terms of low irritation. The present invention has been completed by finding that it has the characteristics and can provide a feeling of use that is milder than before.

すなわち本発明は、一般式(I):
R1-O-(CH2CH2O)nCH2COOM (I)
(式中、R1は飽和又は不飽和の炭化水素基を示し、nは1〜5の数を示し、Mはリシン又はヒスチジンを示す。)
で表されるアルキルエーテルカルボン酸アミノ酸塩を含む、低刺激で、かつ使用性、安定性に優れた特徴を有する液体洗浄剤組成物を提供する。
That is, the present invention relates to the general formula (I):
R 1 -O- (CH 2 CH 2 O) n CH 2 COOM (I)
(In the formula, R 1 represents a saturated or unsaturated hydrocarbon group, n represents a number of 1 to 5, and M represents lysine or histidine.)
A liquid detergent composition comprising the alkyl ether carboxylic acid amino acid salt represented by the formula (1) having low irritation and excellent usability and stability.

本発明の液体洗浄剤組成物は、低刺激で、かつ使用性、安定性に優れた特徴を有する。   The liquid detergent composition of the present invention is characterized by low irritation and excellent usability and stability.

本発明で用いられる一般式(I)で表されるアルキルエーテルカルボン酸アミノ酸塩は、いわゆるアニオン性界面活性剤である。   The alkyl ether carboxylic acid amino acid salt represented by the general formula (I) used in the present invention is a so-called anionic surfactant.

R1で示される飽和又は不飽和の炭化水素基としては、例えば、炭素数8〜18の芳香族炭化水素、直鎖状又は分岐状脂肪炭化水素が例示され、そのうち、脂肪族炭化水素(特にアルキル基、アルケニル基)が好ましい。例えば、オクチル基、デシル基、ドデシル基、トリデセル基、テトラデシル基、ヘキサデシル基、オクタデシル基、ドコシル基、2−エチルヘキシル基、2−ヘキシルデシル基、2−オクチルウンデシル基等が好ましい例として挙げられ、中でもドデシル基、トリデセル基、テトラデシル基が界面活性能力の点で優れている。 Examples of the saturated or unsaturated hydrocarbon group represented by R 1 include aromatic hydrocarbons having 8 to 18 carbon atoms and linear or branched aliphatic hydrocarbons, of which aliphatic hydrocarbons (particularly, Alkyl groups and alkenyl groups) are preferred. For example, octyl group, decyl group, dodecyl group, tridecyl group, tetradecyl group, hexadecyl group, octadecyl group, docosyl group, 2-ethylhexyl group, 2-hexyldecyl group, 2-octylundecyl group and the like are preferable examples. Of these, a dodecyl group, a tridecel group, and a tetradecyl group are excellent in terms of surface activity.

ポリオキシエチレンの重合度nは平均重合度であり、一般に1〜5であり、泡立ちの面から2〜4が好ましく、特に3がより好ましい。   The degree of polymerization n of the polyoxyethylene is an average degree of polymerization, generally 1 to 5, preferably 2 to 4 and more preferably 3 from the viewpoint of foaming.

Mはリシンまたはヒスチジンである。かかる塩基性アミノ酸の塩とすることにより、細胞に対する刺激が低減され、かつ良好な起泡性が発揮される。   M is lysine or histidine. By using such a basic amino acid salt, stimulation to cells is reduced and good foaming properties are exhibited.

本発明で用いられる一般式(I)で表されるアルキルエーテルカルボン酸アミノ酸塩は、上記のものであれば単独で又は2種以上を混合して用いることができる。   The alkyl ether carboxylic acid amino acid salt represented by the general formula (I) used in the present invention can be used alone or in admixture of two or more as long as it is the above.

一般式(I)で表されるアルキルエーテルカルボン酸アミノ酸塩の配合量は、典型的には液体洗浄組成物中5〜60重量%、好ましくは10〜50重量%の範囲で配合することができる。5重量%未満では起泡力と洗浄力が不十分となる可能性があり、60重量%を超えて配合しても洗浄力は配合量に関係なくほぼ一定になるため、より好ましくは10〜50重量%の範囲が推奨される。   The compounding amount of the alkyl ether carboxylic acid amino acid salt represented by the general formula (I) is typically 5 to 60% by weight, preferably 10 to 50% by weight in the liquid cleaning composition. . If it is less than 5% by weight, the foaming power and the cleaning power may be insufficient, and even if it exceeds 60% by weight, the cleaning power is almost constant regardless of the blending amount. A range of 50% by weight is recommended.

本発明の液体洗浄組成物には、上述した成分の他にも、目的に応じて洗浄組成物に通常使用されている成分を本発明の目的を達成する範囲内で、適宜配合することができる。これらの成分としては、例えば、ノニオン界面活性剤、両性界面活性剤、カチオン界面活性剤、保湿剤、カチオン性高分子、シリコーン誘導体、油分、植物抽出エキス、粘度調整剤、パール化剤、薬剤、防腐剤、キレート剤、酸化防止剤、PH調整剤、色素、香料、消臭剤、抗菌剤、酵素等が挙げられる。   In the liquid cleaning composition of the present invention, in addition to the components described above, components usually used in the cleaning composition can be appropriately blended within the scope of achieving the object of the present invention depending on the purpose. . Examples of these components include nonionic surfactants, amphoteric surfactants, cationic surfactants, humectants, cationic polymers, silicone derivatives, oils, plant extracts, viscosity modifiers, pearling agents, drugs, Examples include antiseptics, chelating agents, antioxidants, pH adjusting agents, pigments, fragrances, deodorants, antibacterial agents, enzymes, and the like.

得られる本発明の液体洗浄組成物は、その形態は液体状、固体状、ゲル状、ペースト、スラリー、ミスト状等の目的に応じて種々の形態で用いることができる。但し、この形態に限定されることはない。   The obtained liquid cleaning composition of the present invention can be used in various forms depending on purposes such as liquid, solid, gel, paste, slurry, mist and the like. However, it is not limited to this form.

本発明の液体洗浄組成物はpH3〜12の広範囲のpH域で使用することができ、より好ましくは該組成物のpH4.5〜11で使用できる。さらに好ましくは、pH5〜8で使用できる。   The liquid cleaning composition of the present invention can be used in a wide pH range of pH 3 to 12, more preferably pH 4.5 to 11 of the composition. More preferably, it can be used at pH 5-8.

本発明の液体洗浄組成物は、ヘアシャンプー、ボディーシャンプー、ハンドソープ、液体洗顔料、歯磨き、家庭用、台所用洗剤などに好適に用いることができる。   The liquid cleaning composition of the present invention can be suitably used for hair shampoos, body shampoos, hand soaps, liquid facial cleansers, toothpastes, household and kitchen detergents.

次に、本発明を具体的に説明するが、本発明はこれに限定されるものではない。   Next, the present invention will be specifically described, but the present invention is not limited thereto.

サンプルの調製及び入手
本実施例で使用するアルキルエーテルカルボン酸リシン、アルキルエーテルカルボン酸ヒスチジン、アルキルエーテルカルボン酸ナトリウムは、以下の方法に従い調整乃至入手した。
〔アルキルエーテルカルボン酸リシンの調製〕
アルキルエーテルカルボン酸リシンは、ポリオキシエチレンラウリルエーテル酢酸(三洋化成社製、商品名「ビューライトLCA-25NH」)をリシン水溶液中で中和して得た。
〔アルキルエーテルカルボン酸ヒスチジンの調製〕
アルキルエーテルカルボン酸ヒスチジンは、ポリオキシエチレンラウリルエーテル酢酸(三洋化成社製、商品名「ビューライトLCA-25NH」)をヒスチジン水溶液中で中和して得た。
〔アルキルエーテルカルボン酸ナトリウムの調製〕
アルキルエーテルカルボン酸ナトリウムは、ポリオキシエチレンラウリルエーテル酢酸(三洋化成社製、商品名「ビューライトLCA-25NH」)を水酸化ナトリウム水溶液中で中和して得た。
[ラウレス硫酸ナトリウム]
ラウレス硫酸ナトリウムは日光ケミカルズ社製、商品名「NIKKOL SLS」を使用した。
[ラウリルエーテル硫酸ナトリウム]
ラウリルエーテル硫酸ナトリウムは三洋化成社製、商品名「サンデットEN」を使用した。
Preparation and Acquisition of Samples The alkyl ether carboxylic acid lysine, alkyl ether carboxylic acid histidine, and alkyl ether carboxylic acid sodium used in this example were prepared or obtained according to the following method.
(Preparation of alkyl ether carboxylic acid lysine)
The alkyl ether carboxylic acid lysine was obtained by neutralizing polyoxyethylene lauryl ether acetic acid (manufactured by Sanyo Kasei Co., Ltd., trade name “Bulite LCA-25NH”) in an aqueous lysine solution.
(Preparation of alkyl ether carboxylic acid histidine)
The alkyl ether carboxylic acid histidine was obtained by neutralizing polyoxyethylene lauryl ether acetic acid (manufactured by Sanyo Kasei Co., Ltd., trade name “Bulite LCA-25NH”) in an aqueous histidine solution.
(Preparation of sodium alkyl ether carboxylate)
Sodium alkyl ether carboxylate was obtained by neutralizing polyoxyethylene lauryl ether acetic acid (manufactured by Sanyo Kasei Co., Ltd., trade name “Burelite LCA-25NH”) in an aqueous sodium hydroxide solution.
[Sodium laureth sulfate]
Sodium laureth sulfate manufactured by Nikko Chemicals was used under the trade name “NIKKOL SLS”.
[Sodium lauryl ether sulfate]
Sodium lauryl ether sulfate was manufactured by Sanyo Kasei Co., Ltd. under the trade name “Sandet EN”.

試験例1(刺激性評価試験)
刺激性評価は、ヒト3次元培養表皮モデルであるLabCyte EPI-MODEL (ジャパン・ティッシュ・エンジニアリング社製)を用いて刺激性試験を行った。
Test Example 1 (Irritation evaluation test)
For the evaluation of irritation, an irritation test was performed using LabCyte EPI-MODEL (manufactured by Japan Tissue Engineering Co., Ltd.) which is a human three-dimensional cultured epidermis model.

具体的には、ヒト表皮組織を培養したカップをアッセイ培地に入れ、37℃, CO2濃度 10%で1時間インキュベーションを行った後、1%水溶液に希釈した各洗浄剤(アルキルエーテルカルボン酸リシン塩水溶液、アルキルエーテルカルボン酸ヒスチジン塩水溶液、アルキルエーテルカルボン酸ナトリウム塩水溶液、及びラウレス硫酸ナトリウム水溶液)を100 μL添加し、37℃, CO2濃度 10%で一定時間インキュベーションを行い暴露した。暴露時間終了後、培養カップ内の洗浄剤を除去したのち、MTT試薬により1時間染色を行った。その後、染色された細胞をカップから取り出し、プロパノールに浸し静置した。1日静置後のプロパノール抽出液の590 nmの吸光度を測定することにより刺激性評価を行った。尚、本試験では蒸留水30分暴露のものをコントロールの値とし、その値と比較することにより30分、1時間、2時間暴露の際の刺激性を算出した。 Specifically, a cup in which human epidermal tissue was cultured was placed in an assay medium, incubated at 37 ° C. and CO 2 concentration of 10% for 1 hour, and then diluted with a 1% aqueous solution (alkyl ether carboxylate lysine). 100 μL of a salt aqueous solution, an alkyl ether carboxylic acid histidine salt aqueous solution, an alkyl ether carboxylic acid sodium salt aqueous solution, and a sodium laureth sodium sulfate aqueous solution) were added and incubated at 37 ° C. and CO 2 concentration 10% for a certain period of time for exposure. After completion of the exposure time, the detergent in the culture cup was removed, and staining was performed with an MTT reagent for 1 hour. Thereafter, the stained cells were removed from the cup, immersed in propanol and allowed to stand. Irritation was evaluated by measuring the absorbance at 590 nm of the propanol extract after standing for 1 day. In this test, the value of exposure to distilled water for 30 minutes was taken as a control value, and the irritation at the time of exposure for 30 minutes, 1 hour, 2 hours was calculated by comparing with that value.

アルキルエーテルカルボン酸のリシン塩、ヒスチジン塩、ナトリウム塩およびラウレス硫酸ナトリウムの30分、1時間、2時間暴露時の刺激性試験の結果を表1に示す。   Table 1 shows the results of the irritation test of alkyl ether carboxylic acid lysine salt, histidine salt, sodium salt and sodium laureth sulfate when exposed for 30 minutes, 1 hour and 2 hours.

Figure 2009249537
Figure 2009249537

表1より、アルキルエーテルカルボン酸のリシン塩、ヒスチジン塩およびナトリウム塩は2時間暴露時においても約50%の細胞は生存しており、ラウレス硫酸ナトリウムと比較すると高い低刺激性を有すことが明らかとなった。アルキルエーテルカルボン酸塩について比較すると、全ての暴露時間において塩基性アミノ酸塩置換した洗浄剤(リシン塩、ヒスチジン塩)がナトリウム塩と比較して優位な低刺激性を示しており、特に暴露時間の短い30分暴露では、それぞれ93.4%、91.3%、74.7%の生存率と優位な効果として現れていた。この短時間暴露における有意差は、洗浄剤の一般的な使用時間を考慮すると大きな影響力があると考えられた。   According to Table 1, about 50% of the cells of the lysine salt, histidine salt and sodium salt of alkyl ether carboxylic acid survive even after 2 hours exposure, and may have a low hypoallergenicity compared with sodium laureth sulfate. It became clear. When compared with alkyl ether carboxylates, the basic amino acid salt-substituted detergents (lysine salt, histidine salt) showed superior hypoallergenicity compared with sodium salts at all exposure times, Short exposures of 30 minutes showed survival and superior effects of 93.4%, 91.3%, and 74.7%, respectively. This significant difference in short-term exposure was considered to have a significant impact when considering the general usage time of detergents.

試験例2(タンパク変性試験)
1%水溶液に希釈した各洗浄剤(アルキルエーテルカルボン酸リシン塩水溶液、アルキルエーテルカルボン酸ヒスチジン塩水溶液、アルキルエーテルカルボン酸ナトリウム塩水溶液、ラウリルエーテル硫酸ナトリウム水溶液)と、タンパク質として卵白アルブミンの濃度0.05%水溶液を1:9の重量比で混合し、30分後に変性しなかったタンパク質をHPLCにて定量してタンパク変性率を求めた。
Test example 2 (protein denaturation test)
Each detergent diluted in 1% aqueous solution (alkyl ether carboxylic acid lysine salt aqueous solution, alkyl ether carboxylic acid histidine salt aqueous solution, alkyl ether carboxylic acid sodium salt aqueous solution, lauryl ether sodium sulfate aqueous solution) and the concentration of egg white albumin as protein 0.05% The aqueous solution was mixed at a weight ratio of 1: 9, and the protein that was not denatured after 30 minutes was quantified by HPLC to determine the protein denaturation rate.

アルキルエーテルカルボン酸のリシン塩、ヒスチジン塩およびナトリウム塩、ラウリルエーテル硫酸ナトリウムのタンパク変性率結果を表2に示す。   Table 2 shows the results of protein denaturation rates of alkyl ether carboxylic acid lysine salt, histidine salt and sodium salt, and sodium lauryl ether sulfate.

Figure 2009249537
Figure 2009249537

表2より、アルキルエーテルカルボン酸塩はどれもラウリルエーテル硫酸ナトリウムと比較しても非常に低いタンパク変性率を有すことが明らかとなった。アルキルエーテルカルボン酸塩で比較すると、上記のヒト3次元培養表皮モデルを用いた刺激性試験同様に、アミノ酸塩の洗浄剤のほうが明らかに低刺激であった。   Table 2 shows that all alkyl ether carboxylates have a very low protein denaturation rate as compared with sodium lauryl ether sulfate. When compared with the alkyl ether carboxylate, the amino acid salt detergent was clearly less irritating, as in the irritation test using the human three-dimensional cultured epidermis model.

試験例3(起泡性試験)
各洗浄剤(ラウリルエーテルカルボン酸リシン水溶液、ラウリルエーテルカルボン酸ナトリウム水溶液、ラウリルエーテル硫酸ナトリウム水溶液)を15 ppm(CaO換算)の硬水で濃度0.1%、0.2%に希釈後、クエン酸もしくは水酸化ナトリウムを用いてpHを7.0±0.1に調整した。この水溶液200 mLを松下電器産業(株)製、ファイバーミキサー(MX-V200)にとり、25℃で30秒間撹拌した直後の泡高さを読みとり起泡力とした。
Test Example 3 (Foamability test)
Diluting each cleaning agent (lysine lauryl ether carboxylate aqueous solution, sodium lauryl ether carboxylate aqueous solution, sodium lauryl ether sulfate aqueous solution) with 15 ppm (CaO equivalent) hard water to a concentration of 0.1%, 0.2%, citric acid or sodium hydroxide Was used to adjust the pH to 7.0 ± 0.1. 200 mL of this aqueous solution was put into a fiber mixer (MX-V200) manufactured by Matsushita Electric Industrial Co., Ltd., and the foam height immediately after stirring at 25 ° C. for 30 seconds was read as foaming power.

アルキルエーテルカルボン酸のリシン塩およびナトリウム塩、ラウリルエーテル硫酸ナトリウムの起泡力結果を表3に示す。   Table 3 shows the foaming power results of alkyl ether carboxylic acid lysine and sodium salts and sodium lauryl ether sulfate.

Figure 2009249537
Figure 2009249537

表3より、0.1、0.2%のどちらの濃度においてもアルキルエーテルカルボン酸リシンは、アルキルエーテルカルボン酸ナトリウムおよびラウリルエーテル硫酸ナトリウムとほぼ同等の起泡力を有していることが示された。このことにより、アルキルエーテルカルボン酸リシンは低刺激性であるにも関わらず、高い起泡性を有していることが明らかとなった。   From Table 3, it was shown that lysine alkyl ether carboxylate has almost the same foaming power as sodium alkyl ether carboxylate and sodium lauryl ether sulfate at both 0.1 and 0.2% concentrations. This revealed that the alkyl ether carboxylic acid lysine has high foaming property even though it is hypoallergenic.

試験例4(耐硬水性)
1%水溶液に希釈した各洗浄剤(ラウリルエーテルカルボン酸リシン水溶液、ラウリルエーテルカルボン酸ナトリウム水溶液、ラウリルエーテル硫酸ナトリウム水溶液)10 mLに、25℃で撹拌下に濃度0.1 mol/Lの塩化カルシウム水溶液を滴下し濁り始めた時点の滴定量を耐硬水性とした。
Test Example 4 (Hard water resistance)
To 10 mL of each cleaning agent diluted in 1% aqueous solution (aqueous lauryl ether carboxylic acid lysine solution, sodium lauryl ether carboxylate aqueous solution, sodium lauryl ether sodium sulfate aqueous solution) with stirring at 25 ° C, a 0.1 mol / L aqueous calcium chloride solution was added. The titration amount at the time of dropping and starting to become cloudy was defined as hard water resistance.

アルキルエーテルカルボン酸のリシン塩およびナトリウム塩、ラウリルエーテル硫酸ナトリウムの耐硬水性結果を表4に示す。   Table 4 shows the results of hard water resistance of lysine salts and sodium salts of alkyl ether carboxylic acids and sodium lauryl ether sulfate.

Figure 2009249537
Figure 2009249537

表4より、アルキルエーテルカルボン酸リシンは非常に高い耐硬水性を有していることがわかり、使用の際においても高い安定性を有していることが証明された。   From Table 4, it was found that the alkyl ether carboxylic acid lysine has very high water resistance, and proved to have high stability even in use.

試験例5(泡嗜好性試験)
表5に示す各組成及び配合(重量%)の実施例及び比較例のシャンプーを下記の製造方法にて調製した。成分1〜9を均一に混合し、そこに実施例では10、11混合溶液を、比較例では12、13混合溶液をそれぞれ加え均一に混合しシャンプーを得た。
Test Example 5 (foam preference test)
Shampoos of Examples and Comparative Examples having the respective compositions and formulations (% by weight) shown in Table 5 were prepared by the following production methods. Ingredients 1 to 9 were uniformly mixed, and the mixed solutions 10 and 11 were added thereto in the examples, and the mixed solutions 12 and 13 were added in the comparative examples, and mixed uniformly to obtain a shampoo.

モニター者20名に実施例と比較例を使用してもらい、使用中の泡立ち、すすぎ易さ、乾燥後の髪のまとまり具合、なめらかさ、しっとり感について、下記の絶対評価基準を用いて7段階に評価し、各試料の評点の平均値を4段階の判定基準を用いて判定した。
<絶対評価基準>
(評点):(評価)
6点:感応的に非常に好きである
5点:感応的に好きである
4点:感応的にやや好きである
3点:感応的に普通である
2点:感応的にやや嫌いである
1点:感応的に嫌いである
0点:感応的に非常に嫌いである
<判定基準>
(評価):(平均値)
◎:5点を超える (非常に良好)
○:3点を超えて5点以下 (良好)
△:2点を超えて3点以下 (やや不良)
×:2点以下 (不良)
Twenty monitor staff use the examples and comparative examples, and use the following absolute evaluation criteria to evaluate foaming, ease of rinsing, smoothness of hair after drying, smoothness, and moist feeling using the following absolute evaluation criteria. The average score of each sample was determined using a four-step criterion.
<Absolute evaluation criteria>
(Score): (Evaluation)
6 points: very sensitive
5 points: I like it sensitively
4 points: Slightly responsive
3 points: Sensitively normal
2 points: Slightly dislike
1 point: I hate sensitively
0 points: I highly dislike sensitively <Criteria>
(Evaluation): (Average value)
A: More than 5 points (very good)
○: Over 3 points and under 5 points (good)
Δ: Over 2 points and under 3 points (slightly bad)
×: 2 points or less (defect)

Figure 2009249537
Figure 2009249537

表5の結果から明らかなように、本発明の実施例のシャンプーは比較例と比較して、使用中の泡立ち、すすぎ易さ、乾燥後の髪のなめらかさにおいて、優れた効果を示すものであることが実証され、特にすすぎ易さでは「泡が細かく洗い流し易い」などの意見が聞かれ、ナトリウム置換と比べても非常に良好な評価を得られることが明らかとなった。   As is clear from the results in Table 5, the shampoos of the examples of the present invention exhibit superior effects in foaming during use, ease of rinsing, and smoothness of the hair after drying, as compared with the comparative examples. It was proved that there was an opinion, especially on the ease of rinsing, and opinions such as “the foam is fine and easy to wash away” were obtained, and it became clear that a very good evaluation can be obtained compared with sodium replacement.

Claims (2)

一般式(I):
R1-O-(CH2CH2O)nCH2COOM (I)
(式中、R1は飽和又は不飽和の炭化水素基を示し、nは1〜5の数を示し、Mはリシン又はヒスチジンを示す。)
で表されるアルキルエーテルカルボン酸アミノ酸塩を含む低刺激性液体洗浄組成物。
Formula (I):
R 1 -O- (CH 2 CH 2 O) n CH 2 COOM (I)
(In the formula, R 1 represents a saturated or unsaturated hydrocarbon group, n represents a number of 1 to 5, and M represents lysine or histidine.)
A mild liquid cleaning composition comprising an alkyl ether carboxylic acid amino acid salt represented by:
一般式(I)で表されるアルキルエーテルカルボン酸アミノ酸塩を5〜60重量%含有する請求項1に記載の低刺激性液体洗浄組成物。 The mild liquid cleaning composition according to claim 1, comprising 5 to 60% by weight of an alkyl ether carboxylic acid amino acid salt represented by the general formula (I).
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