JP4287555B2 - Cleaning composition - Google Patents

Cleaning composition Download PDF

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Publication number
JP4287555B2
JP4287555B2 JP28988199A JP28988199A JP4287555B2 JP 4287555 B2 JP4287555 B2 JP 4287555B2 JP 28988199 A JP28988199 A JP 28988199A JP 28988199 A JP28988199 A JP 28988199A JP 4287555 B2 JP4287555 B2 JP 4287555B2
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Japan
Prior art keywords
group
cleaning composition
foaming
skin
composition
Prior art date
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JP28988199A
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Japanese (ja)
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JP2001114653A (en
Inventor
信章 辰田
千賀子 松本
哲也 宮島
健一 春日
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Kao Corp
Original Assignee
Kao Corp
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Publication date
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Priority to JP28988199A priority Critical patent/JP4287555B2/en
Priority to PCT/JP2000/007043 priority patent/WO2001026614A1/en
Publication of JP2001114653A publication Critical patent/JP2001114653A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、肌に対して低刺激であり、良好な泡立ちで、しかもすすぎ時にきしまない洗浄剤組成物に関する。
【0002】
【従来の技術】
シャンプー、全身洗浄料等の皮膚に直接接する洗浄剤組成物は、洗浄力、泡性能、使用感に加え、肌に対して低刺激であることが求められている。洗浄成分として広く用いられる硫酸塩型界面活性剤は、泡性能は高いものの、シャンプー時に目にしみたり、長期に使用すると敏感肌の人は手や肌が荒れやすくなる場合がある。また、洗浄力が高いと、シャンプーでは、すすぎ時に髪がきしんで使用感が悪くなるという問題もあった。すすぎ性を向上させるため、カチオン性ポリマーやシリコーン化合物等のコンディショニング成分を配合した場合には、起泡性が低下してしまう。
更に、刺激を抑えるため、エーテル型酢酸系界面活性剤、リン酸系界面活性剤、アシル化アミノ酸系界面活性剤等を主成分とする洗浄剤組成物が開発されてきたが、いずれも洗浄性や起泡性の点で十分満足できるものではなかった。
【0003】
【発明が解決しようとする課題】
本発明の目的は、肌に対して刺激が少なく、良好な泡立ちで、すすぎ時にきしまない洗浄剤組成物を提供することにある。
【0004】
【課題を解決するための手段】
本発明者らは、アシル化アミノ酸系界面活性剤と特定のグリセリルエーテルを組み合わせて用いれば、肌に対して低刺激であり、良好な泡立ちで、しかもすすぎ時にきしまない洗浄剤組成物が得られることを見出した。
【0005】
本発明は、(A)N−アシルアミノ酸又はその塩、及び
(B)炭素数4〜12のアルキル基又はアルケニル基を有するグリセリルエーテル
を含有する洗浄剤組成物を提供するものである。
【0006】
【発明の実施の形態】
本発明で用いる成分(A)のN−アシルアミノ酸におけるアミノ酸残基としては、グルタミン酸、アスパラギン酸、アラニン、グリシン等が挙げられる。また、アシル基としては、炭素数8〜18のものが好ましく、例えばカプリノイル基、ラウロイル基、ミリストイル基、パルミトイル基等が挙げられる。また、N−アシルアミノ酸のアミド窒素は、低級アルキル基で置換していてもよい。低級アルキル基としては、炭素数1〜3のものが好ましく、例えばメチル基、エチル基、n−プロピル基、イソプロピル基等が挙げられる。
更にこれらの塩としては、ナトリウム、カリウム等のアルキル金属塩;トリエタノールアミン等のアルカノールアミン塩;アルギニン等の塩基性アミノ酸塩などが挙げられる。
【0007】
成分(A)の好ましい具体例としては、N−アシルアミノ酸として、N−ココイルグリシン、N−アシル−N−カルボキシエチルグリシン、N−ラウロイルグルタミン酸、N−ミリストイルグルタミン酸、N−ココイルグルタミン酸、N−ラウロイル−β−アラニン、N−ラウロイル−N−イソプロピルグリシン、N−ラウロイルサルコシン、N−ミリストイルサルコシン、N−パルミトイルサルコシン、N−ラウロイル−N−メチル−β−アラニン等が挙げられ、更にこれらのアルカリ金属塩、アルカノールアミン塩、塩基性アミノ酸塩などが挙げられる。
【0008】
成分(A)は、1種以上を用いることができ、全組成中に2〜70重量%、特に5〜50重量%、更に10〜30重量%配合するのが、起泡性の点で好ましい。
【0009】
成分(B)のグリセリルエーテルは、炭素数4〜12の直鎖又は分岐鎖のアルキル基又はアルケニル基を有するもので、例えばn−ブチル基、イソブチル基、tert−ブチル基、n−ペンチル基、イソペンチル基、n−ヘキシル基、イソヘキシル基、n−ヘプチル基、n−オクチル基、2−エチルヘキシル基、n−ノニル基、n−デシル基、n−ラウリル基等の炭素数4〜12のアルキル基を有するものが好ましく、特に炭素数4〜11、更に炭素数6〜10、就中炭素数8のアルキル基を1又は2個、特に1個有するのが好ましい。
【0010】
成分(B)のグリセリルエーテルは、1種以上を用いることができ、全組成中に0.1〜30重量%、特に0.5〜15重量%、更に1〜5重量%配合するのが、起泡性の点で好ましい。
【0011】
本発明の洗浄剤組成物は、水を媒体とする水性液状とするのが好ましく、更に通常の洗浄剤組成物に用いられる成分、例えばプロピレングリコール、グリセリン、ジエチレングリコールモノエチルエーテル、ソルビトール、パンテノール等の保湿剤;カチオン性ポリマー、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リン酸エステル等のパール化剤;ポリオキシエチレンアルキルエーテル、アルキルポリグルコシド等のノニオン性界面活性剤;アミドプロピルベタイン等の両性界面活性剤;成分(A)以外のアニオン性界面活性剤;セチルトリメチルアンモニウム塩等のカチオン性界面活性剤;染料、顔料等の着色剤;メチルセルロース、ポリエチレングリコール、エタノール等の粘度調整剤;クエン酸、水酸化カリウム等のpH調整剤;塩化ナトリウム等の塩類、植物エキス類、防腐剤、殺菌剤、キレート剤、ビタミン剤、抗炎症剤、抗フケ剤、香料、色素、紫外線吸収剤、酸化防止剤、水などを、適宜配合できる。
【0012】
本発明の洗浄剤組成物は、常法に従って製造でき、例えばシャンプー、全身洗浄料、洗顔料、手洗い剤等の身体用洗浄剤とすることができる。
本発明の洗浄剤組成物は、刺激が少ないことから弱酸性とするのが好ましく、pH5〜10、特にpH5.5〜7とするのが好ましい。
【0013】
【発明の効果】
本発明の洗浄剤組成物は、肌に対して低刺激であり、良好な泡立ちで、しかもすすぎ時にきしまないものである。
【0014】
【実施例】
実施例1
表1に示す組成の洗浄剤組成物を常法により製造し、起泡力、刺激性及びすすぎ時のきしみ感について評価した。結果を表1に併せて示す。
【0015】
(評価方法)
(1)起泡力:
洗浄剤組成物の20倍希釈水溶液を調製し、この溶液100mL(液温40℃)を、1000mLのメスシリンダーに注入する。次いでこの溶液中に、直径5cmの4枚攪拌羽根を設置し、1000r/min で30秒間攪拌した後に生じた泡の体積(mL)を測定して泡立ち量とし、以下の基準で評価した。なお、攪拌羽根は5秒毎に反転させた。
◎;泡立ち量200mL以上。
○;泡立ち量150mL以上200mL未満。
△;泡立ち量150mL未満。
【0016】
(2)刺激性:
各洗浄剤組成物の5倍希釈水溶液を調整し、この水溶液10mLを、10名の専門パネラーの前腕に設置した直径3.5cmのガラスカップにとり、1日30分間皮膚と接触させた。これを3日間連続して行った後、皮膚の状態を以下の基準で評価した。
○;落せつが認められるのは5名以下。
△;落せつが認められるのは6名以上であるが、紅斑は認められない。
×;6名以上に落せつ及び紅斑が認められる。
【0017】
(3)すすぎ時のきしみ感:
10名の専門パネラーにより、各洗浄剤組成物2gと適当量の水道水を用い、手のひらで上腕部を洗浄し、1分間水道水ですすいだ時のきしみ感を以下の基準で官能評価した。平均点を求め、平均1.5以上を○、0.5以上1.5未満を△、0.5未満を×として示した。
2;きしまない。
1;ややきしみ感がある。
0;きしみが強く不快。
【0018】
【表1】

Figure 0004287555
【0019】
実施例2
以下に示す組成のシャンプーを常法により製造した。
得られたシャンプーは、肌に対して刺激が少なく、良好な泡立ちを有し、すすぎ時にきしまないものであった。
【表2】
Figure 0004287555
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a detergent composition that is mild to the skin, has good foaming, and does not discolor when rinsed.
[0002]
[Prior art]
Detergent compositions that are in direct contact with the skin, such as shampoos and whole body cleansers, are required to have low irritation to the skin in addition to the detergency, foam performance, and feeling of use. Sulfate-type surfactants widely used as a cleaning component have high foam performance, but may be squeezed during shampooing or may cause rough skin on hands and skin when used for a long time. Further, when the cleaning power is high, the shampoo has a problem that the hair is squeezed at the time of rinsing and the feeling of use becomes worse. In order to improve the rinsing property, when a conditioning component such as a cationic polymer or a silicone compound is blended, the foaming property is lowered.
Furthermore, in order to suppress irritation, detergent compositions based on ether-type acetic acid-based surfactants, phosphoric acid-based surfactants, acylated amino acid-based surfactants, and the like have been developed. In addition, it was not satisfactory in terms of foaming property.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a cleaning composition that is less irritating to the skin, has good foaming, and does not get damaged during rinsing.
[0004]
[Means for Solving the Problems]
The present inventors can use a combination of acylated amino acid surfactants and specific glyceryl ethers to obtain a detergent composition that has low irritation to the skin, good foaming, and that does not get damaged when rinsed. I found out that
[0005]
The present invention provides a cleaning composition containing (A) an N-acylamino acid or a salt thereof and (B) a glyceryl ether having an alkyl group or an alkenyl group having 4 to 12 carbon atoms.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Examples of the amino acid residue in the N-acylamino acid of component (A) used in the present invention include glutamic acid, aspartic acid, alanine, glycine and the like. Moreover, as an acyl group, a C8-C18 thing is preferable, for example, a caprinoyl group, a lauroyl group, a myristoyl group, a palmitoyl group etc. are mentioned. The amide nitrogen of the N-acyl amino acid may be substituted with a lower alkyl group. As a lower alkyl group, a C1-C3 thing is preferable, for example, a methyl group, an ethyl group, n-propyl group, isopropyl group etc. are mentioned.
Furthermore, examples of these salts include alkyl metal salts such as sodium and potassium; alkanolamine salts such as triethanolamine; and basic amino acid salts such as arginine.
[0007]
Preferred specific examples of the component (A) include N-acylamino acids such as N-cocoyl glycine, N-acyl-N-carboxyethyl glycine, N-lauroyl glutamic acid, N-myristoyl glutamic acid, N-cocoyl glutamic acid, N-lauroyl. -Β-alanine, N-lauroyl-N-isopropylglycine, N-lauroyl sarcosine, N-myristoyl sarcosine, N-palmitoyl sarcosine, N-lauroyl-N-methyl-β-alanine and the like, and these alkali metals Salts, alkanolamine salts, basic amino acid salts and the like.
[0008]
One or more types of component (A) can be used, and it is preferable from the viewpoint of foaming properties to mix 2 to 70% by weight, particularly 5 to 50% by weight, and further 10 to 30% by weight in the total composition. .
[0009]
The glyceryl ether of component (B) has a linear or branched alkyl group or alkenyl group having 4 to 12 carbon atoms, such as an n-butyl group, an isobutyl group, a tert-butyl group, an n-pentyl group, C4-C12 alkyl groups such as isopentyl group, n-hexyl group, isohexyl group, n-heptyl group, n-octyl group, 2-ethylhexyl group, n-nonyl group, n-decyl group, n-lauryl group In particular, it is preferable to have 1 or 2 alkyl groups having 4 to 11 carbon atoms, more preferably 6 to 10 carbon atoms, and especially 8 carbon atoms.
[0010]
One or more glyceryl ethers of the component (B) can be used, and 0.1 to 30% by weight, particularly 0.5 to 15% by weight, and further 1 to 5% by weight are incorporated in the total composition. It is preferable in terms of foamability.
[0011]
The cleaning composition of the present invention is preferably in the form of an aqueous liquid with water as a medium, and further components used in ordinary cleaning compositions such as propylene glycol, glycerin, diethylene glycol monoethyl ether, sorbitol, panthenol and the like Moisturizing agents; Conditioning components such as cationic polymers, silicone compounds and derivatives thereof; Pearling agents such as ethylene glycol distearate; Nonionic surfactants such as polyoxyethylene alkyl ethers and alkyl polyglucosides; Amidopropyl betaine Amphoteric surfactants; anionic surfactants other than component (A); cationic surfactants such as cetyltrimethylammonium salt; colorants such as dyes and pigments; viscosity modifiers such as methylcellulose, polyethylene glycol and ethanol PH adjusters such as citric acid and potassium hydroxide; salts such as sodium chloride, plant extracts, preservatives, bactericides, chelating agents, vitamins, anti-inflammatory agents, anti-dandruff agents, fragrances, pigments, UV absorbers, Antioxidants, water, and the like can be appropriately blended.
[0012]
The cleaning composition of the present invention can be produced according to a conventional method, and can be used as a body cleaning agent such as a shampoo, a whole body cleansing agent, a facial cleanser, and a hand washing agent.
The cleaning composition of the present invention is preferably weakly acidic because it is less irritating, and preferably has a pH of 5 to 10, particularly a pH of 5.5 to 7.
[0013]
【The invention's effect】
The cleaning composition of the present invention has low irritation to the skin, good foaming, and does not get damaged when rinsed.
[0014]
【Example】
Example 1
A cleaning composition having the composition shown in Table 1 was produced by a conventional method and evaluated for foaming power, irritation and squeaky feeling during rinsing. The results are also shown in Table 1.
[0015]
(Evaluation methods)
(1) Foaming power:
A 20-fold diluted aqueous solution of the cleaning composition is prepared, and 100 mL of this solution (liquid temperature 40 ° C.) is injected into a 1000 mL graduated cylinder. Next, four stirring blades having a diameter of 5 cm were placed in this solution, and the volume (mL) of foam generated after stirring for 30 seconds at 1000 r / min was measured as the amount of foaming, and evaluated according to the following criteria. The stirring blade was inverted every 5 seconds.
A: Foaming amount is 200 mL or more.
○: Foaming amount 150 mL or more and less than 200 mL.
Δ: Foaming amount is less than 150 mL.
[0016]
(2) Irritation:
A 5-fold diluted aqueous solution of each cleaning composition was prepared, and 10 mL of this aqueous solution was placed in a glass cup having a diameter of 3.5 cm placed on the forearms of 10 professional panelists and contacted with the skin for 30 minutes a day. After performing this continuously for 3 days, the skin condition was evaluated according to the following criteria.
○: No more than 5 people are allowed to drop.
Δ: Dropping is recognized by 6 or more people, but no erythema is observed.
X: Dropping and erythema are observed in 6 or more people.
[0017]
(3) A feeling of squeak when rinsing:
Ten expert panelists used 2 g of each detergent composition and an appropriate amount of tap water to wash the upper arm with the palm, and sensoryly evaluated the squeaky feeling when rinsed with tap water for 1 minute. Average points were determined, and an average of 1.5 or more was shown as ◯, 0.5 or more and less than 1.5 as Δ, and less than 0.5 as x.
2;
1; There is a slight squeak.
0: Strong squeak and uncomfortable.
[0018]
[Table 1]
Figure 0004287555
[0019]
Example 2
A shampoo having the composition shown below was produced by a conventional method.
The obtained shampoo was less irritating to the skin, had good foaming, and did not get damaged during rinsing.
[Table 2]
Figure 0004287555

Claims (1)

(A)N−アシルアミノ酸又はその塩を5〜50重量%、及び(B)炭素数8のアルキル基を有するモノグリセリルエーテルを0.5〜15重量%含有する洗浄剤組成物。A cleaning composition containing 5 to 50% by weight of (A) N-acylamino acid or a salt thereof, and (B) 0.5 to 15% by weight of monoglyceryl ether having an alkyl group having 8 carbon atoms .
JP28988199A 1999-10-12 1999-10-12 Cleaning composition Expired - Fee Related JP4287555B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP28988199A JP4287555B2 (en) 1999-10-12 1999-10-12 Cleaning composition
PCT/JP2000/007043 WO2001026614A1 (en) 1999-10-12 2000-10-11 Detergent composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28988199A JP4287555B2 (en) 1999-10-12 1999-10-12 Cleaning composition

Publications (2)

Publication Number Publication Date
JP2001114653A JP2001114653A (en) 2001-04-24
JP4287555B2 true JP4287555B2 (en) 2009-07-01

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Country Status (1)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4856386B2 (en) * 2005-04-01 2012-01-18 花王株式会社 Hair cleanser

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