JP4564120B2 - Liquid detergent composition - Google Patents

Liquid detergent composition Download PDF

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JP4564120B2
JP4564120B2 JP31767299A JP31767299A JP4564120B2 JP 4564120 B2 JP4564120 B2 JP 4564120B2 JP 31767299 A JP31767299 A JP 31767299A JP 31767299 A JP31767299 A JP 31767299A JP 4564120 B2 JP4564120 B2 JP 4564120B2
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Prior art keywords
fatty acid
liquid detergent
component
general formula
detergent composition
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JP2001131600A (en
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豊文 伊藤
有人 菅波
朋子 小澤
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Kawaken Fine Chemicals Co Ltd
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Kawaken Fine Chemicals Co Ltd
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【0001】
【発明の属する技術分野】
本発明は、サルフェート型アニオン界面活性剤、エタノールアマイド型非イオン界面活性剤および脂肪酸アミドベタイン型両性界面活性剤を含有する液体洗浄剤において、低温安定性、経時安定性にすぐれ、泡立ちと泡沫安定性がよく、泡のクリーミイ感に優れ、すすぎ時のぬめり感がなく、すすぎ後の皮膚にぬめり感やつっぱり感を与えず、さっぱりした感触を与える液体洗浄剤組成物に関するものである。
【0002】
【従来の技術】
近年、シャンプーやボディーソープ等の身体を洗浄する洗浄剤として、低刺激性であることが求められるようになっている。低刺激性が求められる洗浄剤組成物には、界面活性剤として、例えば脂肪酸アミドアミン型両性界面活性剤、脂肪酸アミドプロピルベタイン型両性界面活性剤等が広く使用されている。
【0003】
脂肪酸アミドプロピルベタイン型両性界面活性剤を配合した洗浄剤組成物として、特公平5−53840号がある。同号公報には、サルフェート型アニオン界面活性剤と一般式(5)
【0004】
【化5】

Figure 0004564120
【0005】
[式中R5は平均炭素数7ないし19のアルキル基又はアルケニル基を表し、p及びqは整数でp+qは1ないし5である]
で示される脂肪酸アルカノールアマイドと脂肪酸アミドプロピルベタイン型両性活性剤を特定の比率で組み合わせた低刺激性の洗浄剤組成物が開示されている。
【0006】
しかしながら、本発明者らの追試によれば前記一般式(5)で示される脂肪酸アルカノールアマイドの種類によっては、低温安定性の悪い処方となることが判明した。すなわち、一般式(5)において、p=0,p+q<2ないしは、q=0,p+q<2で示されるポリオキシエチレン脂肪酸モノアルカノールアマイドに関しては、物質自体の凝固点が60℃以上と高いため、このようなポリオキシエチレン脂肪酸アルカノールアマイドを使用して特公平5−53840号に準じて製造した洗浄剤組成物の一部は、室温以下では白濁あるいは固化してしまい、実用上使用できない。さらに同号公報に示された配合組成では、洗いあがり後にヌルつきが残り、さっぱり感にかけるという問題があり、使用感を充分に満足させるものではなかった。
【0007】
【発明が解決しようとする課題】
本発明が解決しようする課題は、低刺激性であり、かつ低温安定性、経時安定性にすぐれ、泡立ちと泡沫安定性がよく、泡のクリーミイ感に優れ、すすぎ時のぬめり感がなく、すすぎ後の皮膚にぬめり感やつっぱり感を与えず、さっぱりした感触を与える液体洗浄剤組成物を提供することにある。
【0008】
【課題を解決するための手段】
本発明者らは、特定のポリオキシエチレン脂肪酸モノエタノールアマイド型非イオン界面活性剤とサルフェート型アニオン界面活性剤と脂肪酸アミドベタイン型両性界面活性剤をそれぞれ特定比率で配合することにより、上記課題が解決できることを見出し、この知見に基づいて本発明を完成するに至った。
【0009】
すなわち本発明は、
(a)一般式(1)
【0010】
【化6】
Figure 0004564120
【0011】
[式中R1は炭素数10〜16の直鎖もしくは分枝鎖のアルキル基またはアルケニル基、nは0〜5の平均付加モル数、Mは水素カチオンまたはアルカリ金属カチオンを示す。]
で示されるサルフェート型アニオン界面活性剤、
(b)一般式(2)
【0012】
【化7】
Figure 0004564120
【0013】
[式中R2COは炭素数6〜18の直鎖もしくは分枝鎖の飽和または不飽和脂肪酸残基を示し、mは2〜4の平均付加モル数を示す。]
で示されるポリオキシエチレン脂肪酸モノエタノールアマイド型非イオン界面活性剤および
(c)一般式(3)
【0014】
【化8】
Figure 0004564120
【0015】
[式中R3COは炭素数6〜18の直鎖もしくは分枝鎖の飽和または不飽和脂肪酸残基を示し、pは2または3、R4およびR5は各々独立に水素原子または炭素数1〜3のアルキル基を示す。]
で示される脂肪酸アミドベタイン型両性界面活性剤を必須成分として含有する液体洗浄剤組成物において、成分(a)、(b)および(c)の界面活性剤濃度が液体洗浄剤組成物当たり20〜30重量%であって、成分(a)と成分(b)の重量比が5.1/1〜2.4/1であり、かつ成分(a)と成分(c)の重量比が12.75/1〜4.01/1であることを特徴とする液体洗浄剤組成物に関するものである。
【0016】
【発明の実施の形態】
本発明における成分(a)であるサルフェート型アニオン界面活性剤は、前記一般式(1)で示される化合物である。
【0017】
具体的には、ラウリルサルフェート、ミリストイルサルフェート、ラウリルエーテルサルフェート等が挙げられるが、入手のし易さ、刺激性の点から直鎖アルキル疎水基の炭素数が12〜14であって、オキシエチレンの平均付加モル数nが2〜4で示されるラウリルエーテルサルフェート類が好ましい。サルフェート型アニオンの対イオンとしては1価またはは2価のアルカリ金属イオンと水素イオンが好ましい。
【0018】
本発明における成分(b)であるポリオキシエチレン脂肪酸モノエタノールアマイド型非イオン界面活性剤は、前記一般式(2)で示される化合物である。
【0019】
一般式(2)において、R2COは炭素数6〜18の不飽和結合を含んでいてもよい直鎖もしくは分枝鎖の脂肪酸残基であり、例えばラウロイル基、ミリストイル基、ヤシ脂肪酸残基、パーム核油脂肪酸残基等が挙げられる。低温下での安定性が良好でかつ入手の容易さよりラウロイル基、ヤシ油脂肪酸残基、パーム核油脂肪酸残基が好ましい。
【0020】
一般式(2)で示されるポリオキシエチレン脂肪酸モノエタノールアマイド型非イオン界面活性剤の親水基部分は、さまざまなオキシエチレン基の付加モル数をもつポリオキシエチレンで構成され、mはオキシエチレン基の平均付加モル数を示す。本発明に適する平均付加モル数mは2〜4であり、特にm=2のときに、起泡力および増粘性において優れている。m=5を超えると起泡力が顕著に低下するので好ましくない。なお、前記一般式(2)で示されるポリオキシエチレン脂肪酸モノエタノールアマイドに不純物として脂肪酸アルカノールアマイドが含まれてしまう。不純物としての脂肪酸アルカノールアマイドは、一般式(4)
【0021】
【化9】
Figure 0004564120
【0022】
[式中R4COは炭素数6〜18の直鎖もしくは分枝鎖の飽和または不飽和脂肪酸残基を示す。]
で示される脂肪酸アルカノールアマイドであるが、このものは低温安定性が悪い。従って、一般式(2)で示されるポリオキシエチレン脂肪酸モノエタノールアマイド型非イオン界面活性剤においては、一般式(4)で示される脂肪酸アルカノールアマイドの含有量が低い程良いが、不純物としての脂肪酸アルカノールアマイドが10重量%以下であることが低温安定性の点で望ましい。
【0023】
一般式(2)で示されるポリオキシエチレン脂肪酸モノエタノールアマイド型非イオン界面活性剤を具体的に例示すれば、例えばポリオキシエチレン(2)ヤシ油脂肪酸モノエタノールアマイド、ポリオキシエチレン(2)ラウリン酸モノエタノールアマイド、ポリオキシエチレン(3)ミリスチン酸モノエタノールアマイド等であるが、コスト、入手の容易さの点で、ポリオキシエチレン(2)ラウリン酸モノエタノールアマイドが特に好ましい。
【0024】
本発明の成分(c)である脂肪酸アミドベタイン型両性界面活性剤は、一般式(3)で示され化合物である。一般式(3)において、親油基のR3COは炭素数が6から18の脂肪酸残基であり、例えば、ラウロイル基、ミリストイル基、ヤシ脂肪酸残基、またはパーム核油脂肪酸残基等が挙げられる。
【0025】
一般式(3)で示される脂肪酸アミドベタイン型両性界面活性剤を具体的に例示すれば、ヤシ油脂肪酸アミドプロピルベタイン、ラウリン酸アミドプロピルベタイン、ミリスチン酸アミドプロピルベタインやそれらの脱塩品が挙げられるが、コスト及び入手の容易さの点でラウリン酸アミドプロピルベタインが特に好ましい。
【0026】
本発明に適用される成分(a),(b),(c)の組成は、界面活性剤濃度20〜30重量%の液体洗浄剤おいて、本発明の効果を発揮する。界面活性剤総量が20%を下回ると、泡立ちが不十分であり、30%を超えるとゲル化を引き起こす場合があり好ましくない。
【0027】
また、本発明の液体洗浄剤組成物においては、上記成分(a)、(b)および(c)を必須成分とし、成分(a)と成分(b)の重量比が5.1/1〜2.4/1であり、かつ成分(a)と成分(c)の比率が12.75/1〜4.01/1の特定範囲にあることを必須の要件とするものである。本発明における、成分(a)、(b)、(c)の配合比率の範囲を図1に三角図として図示する。図1中、実線で示した領域が上記範囲である。
【0028】
成分(a)と成分(b)の比率において、成分(b)が所定の範囲より多く配合されると、低温安定性が維持できず、所定の範囲より少なく配合されると、配合物の泡質が悪くなり、起泡安定性が低下するため好ましくない。
【0029】
また、成分(a)と成分(c)の比率において、成分(c)の比率が所定の範囲より多く配合されると、すすぎ時のぬめり感が増大し、サッパリとした感触が得られず、所定の範囲より少なく配合されると、充分な初期起泡を得ることができず、好ましくない。
【0030】
さらに本発明の範囲内において、以下の範囲が優れた性能と使用感を有する。
すなわち、成分(a)、(b)、(c)が以下の特定の範囲
((a)+(b)+(c))/(b)の重量比が4/1〜6.5/1、かつ、
(b)/(c)の重量比が1.67/1〜2.5/1
であることがさらに好ましい。この好ましい範囲を、図1において斜線で示した。
【0031】
本発明の液体洗浄剤組成物は透明均一系であり、さらに必要に応じて高級アルコール、シリコン油、流動パラフィン、エステル油等の油分、プロピレングリコール、グリセリン、ポリグリセリン、ポリエチレングリコール等の保湿成分、メチルセルロース、ヒドロキシエチルセルロース等の水溶性高分子、動植物の天然エキスおよびその誘導体、クエン酸、乳酸等の有機酸、塩化ナトリウム、塩化カリウム等の無機塩、香料、染料等の色剤、防腐剤、キレート剤、紫外線吸収剤などの一般に液体洗浄剤組成物に配合される成分を配合することができる。
【0032】
本発明の液体洗浄剤組成物は、頭髪用シャンプー、ボディー用洗浄剤、洗顔料、メイク落し用洗浄剤、台所用液体洗剤、医療用洗剤、その他各種の用途に利用できる。
【0033】
【実施例】
製造例1(ポリオキシエチレン(1)ラウリン酸ジグリコールアミドの調製)ラウリン酸メチル214gにジグリコールアミン106gおよびナトリウムメトキサイド1gを加え、副生成するメタノールを減圧下留去しながら加熱攪拌(20mmHg、140℃、1時間)して、ラウリン酸ジグリコールアミド(288g)を調製した。これをオートクレーブに入れて90℃に加熱し、攪拌しながら、これにエチレンオキサイド44g(1倍モル当量)をガス状で吹き込み、120℃で2時間反応させ、ポリオキシエチレン(1)ラウリン酸ジグリコールアミドを得た。上記のように、このポリオキシエチレン(1)ラウリン酸ジグリコールアミドは、ラウリン酸ジグリコールアミドにエチレンオキサイドを付加させた混合物であり、一般式(4)で表される化合物である脂肪酸アルカノールアミドは含有しないものであった。
【0034】
実施例1〜11、比較例1〜11
表1に示す界面活性剤を用いて、表2及び表3に示す量の有効成分を含有する液体洗浄剤組成物を調製し、その性能を評価した。配合量は重量%である。なお、各実施例および各比較例の配合組成を図2に示す。
【0035】
調製した液体洗浄剤について、起泡力試験、粘度、低温安定性、経時安定性、使用感評価を測定、評価した。それぞれの測定方法と評価方法を以下に示す。
【0036】
[起泡力試験]
ロス・マイルス試験法に基づき、試料濃度0.25%、pH=7の水溶液を200ml調製し、40℃にて起泡力を測定した。
◎・・・非常に良好(泡の高さが190mm以上である)
○・・・良好(泡の高さが180mm以上190mm未満である)
△・・・ふつう(泡の高さが175mm以上180mm未満である)
×・・・不良(泡の高さが175mm未満である)
【0037】
[粘度測定]
B型粘度計(イワキガラス社製)を使用して、25℃における各試料の粘度(mPa・S)を測定した。
【0038】
[低温安定性]
洗浄剤組成物を低温(−5℃)の恒温槽に3日間保存したのち、その外観を目視により観察して評価した。評価基準は下記の通りである。
○・・・透明均一であり、濁りや分離・分層が認められない
△・・・不透明あるいは不均一となるが、室温で保存すると透明均一にもどる
×・・・不透明あるいは不均一であり、室温で保存しても透明均一にもどらない
【0039】
[経時安定性]
洗浄剤組成物を50℃の恒温槽に1ヶ月保存して、色相の変化を目視により観察して評価した。色相はAPHAを基準にして測定をした。
◎・・・非常に良好(APHAの変化が60未満である)
○・・・良好(APHAの変化が60以上80未満である)
△・・・ふつう(APHAの変化が80以上100未満である)
×・・・不良(APHAの変化が100以上である)
【0040】
[使用感評価]
各洗浄剤組成物につき、男女5名、計10名のパネルを用いて、官能で使用感(さっぱり感)を評価した。なお、評価基準は下記の通りである。
◎・・・非常に良好(10人中8〜10名が良いと答えた)
○・・・良好(10人中6〜7名が良いと答えた)
△・・・ふつう(10人中3〜5名が良いと答えた)
×・・・不良(10人中0〜2名が良いと答えた)
【0041】
【表1】
Figure 0004564120
【0042】
【表2】
Figure 0004564120
【0043】
【表3】
Figure 0004564120
【0044】
表2および表3に示した結果から明らかなように、本発明の液体洗浄剤組成物は、いずれも起泡力、低温安定性、経時安定性に優れ、つっぱり感がなかった。
また、実施例1〜11の本発明の液体洗浄剤組成物は、いずれもクリーミイな泡立ちで、すすぎ時のぬめり感がなく、手を荒らすことがなかった。
【0045】
【発明の効果】
本発明により、低刺激性であり、かつ低温安定性、経時安定性にすぐれ、泡立ちと泡沫安定性がよく、泡のクリーミイ感に優れ、すすぎ時のぬめり感がなく、すすぎ後の皮膚にぬめり感やつっぱり感を与えず、さっぱりした感触の液体洗浄剤組成物が得られる。
【図面の簡単な説明】
【図1】 請求項1および請求項2の成分(a)、(b)および(c)の配合範囲を示す三角図。
【図2】 実施例および比較例の配合組成を示す三角図。[0001]
BACKGROUND OF THE INVENTION
The present invention is a liquid detergent containing a sulfate-type anionic surfactant, an ethanolamide-type nonionic surfactant and a fatty acid amide betaine-type amphoteric surfactant, which has excellent low-temperature stability, stability over time, foaming and foam stability. The present invention relates to a liquid detergent composition having good properties, excellent foam creaminess, no slickness at the time of rinsing, and a refreshing feel that does not give a feeling of slickness or tension to the skin after rinsing.
[0002]
[Prior art]
In recent years, as a cleaning agent for cleaning the body such as a shampoo and a body soap, it has been required to have low irritation. In detergent compositions that require low irritation, for example, fatty acid amidoamine type amphoteric surfactants and fatty acid amidopropyl betaine type amphoteric surfactants are widely used as surfactants.
[0003]
Japanese Patent Publication No. 5-53840 is a cleaning composition containing a fatty acid amidopropyl betaine amphoteric surfactant. The publication discloses a sulfate type anionic surfactant and a general formula (5)
[0004]
[Chemical formula 5]
Figure 0004564120
[0005]
[Wherein R 5 represents an alkyl or alkenyl group having an average carbon number of 7 to 19, p and q are integers, and p + q is 1 to 5]
A mild detergent composition combining a fatty acid alkanolamide and a fatty acid amidopropyl betaine type amphoteric active agent represented by the formula (1) in a specific ratio is disclosed.
[0006]
However, according to an additional test by the present inventors, it has been found that depending on the type of the fatty acid alkanol amide represented by the general formula (5), the formulation has poor low-temperature stability. That is, in the general formula (5), regarding the polyoxyethylene fatty acid monoalkanol amide represented by p = 0, p + q <2 or q = 0, p + q <2, the freezing point of the substance itself is as high as 60 ° C. or higher. A part of the detergent composition produced using such a polyoxyethylene fatty acid alkanol amide according to Japanese Patent Publication No. 5-53840 becomes cloudy or solidified at room temperature or lower and cannot be used practically. Furthermore, in the composition shown in the same publication, there is a problem that a nullity remains after washing and a refreshing feeling is given, and the usability is not fully satisfied.
[0007]
[Problems to be solved by the invention]
The problems to be solved by the present invention are low irritation, excellent low-temperature stability and stability over time, good foaming and foam stability, excellent foam creaminess, no slickness during rinsing, and rinsing It is an object of the present invention to provide a liquid detergent composition that gives a refreshing feel without giving the skin a feeling of slimness or tension.
[0008]
[Means for Solving the Problems]
The present inventors have solved the above problem by blending specific polyoxyethylene fatty acid monoethanolamide type nonionic surfactant, sulfate type anionic surfactant and fatty acid amide betaine type amphoteric surfactant in specific ratios, respectively. Based on this finding, the present inventors have completed the present invention.
[0009]
That is, the present invention
(A) General formula (1)
[0010]
[Chemical 6]
Figure 0004564120
[0011]
[Wherein R 1 represents a linear or branched alkyl group or alkenyl group having 10 to 16 carbon atoms, n represents an average addition mole number of 0 to 5, and M represents a hydrogen cation or an alkali metal cation. ]
A sulfate type anionic surfactant represented by the formula:
(B) General formula (2)
[0012]
[Chemical 7]
Figure 0004564120
[0013]
[Wherein R 2 CO represents a linear or branched saturated or unsaturated fatty acid residue having 6 to 18 carbon atoms, and m represents an average addition mole number of 2 to 4. ]
A polyoxyethylene fatty acid monoethanolamide type nonionic surfactant represented by formula (3) and (c)
[0014]
[Chemical 8]
Figure 0004564120
[0015]
[Wherein R 3 CO represents a linear or branched saturated or unsaturated fatty acid residue having 6 to 18 carbon atoms, p is 2 or 3, and R 4 and R 5 are each independently a hydrogen atom or a carbon number. 1-3 alkyl groups are shown. ]
In the liquid detergent composition containing the fatty acid amide betaine type amphoteric surfactant represented by the formula (1) as an essential component, the surfactant concentrations of the components (a), (b) and (c) are 20 to 20 per liquid detergent composition. 30% by weight, the weight ratio of component (a) to component (b) is 5.1 / 1 to 2.4 / 1, and the weight ratio of component (a) to component (c) is 12. It is related with the liquid detergent composition characterized by being 75/1-4.01 / 1.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The sulfate type anionic surfactant which is the component (a) in the present invention is a compound represented by the general formula (1).
[0017]
Specific examples include lauryl sulfate, myristoyl sulfate, lauryl ether sulfate, and the like. From the standpoint of availability and irritation, the linear alkyl hydrophobic group has 12 to 14 carbon atoms, Lauryl ether sulfates having an average added mole number n of 2 to 4 are preferred. The counter ion of the sulfate type anion is preferably a monovalent or divalent alkali metal ion and a hydrogen ion.
[0018]
The polyoxyethylene fatty acid monoethanolamide type nonionic surfactant which is the component (b) in the present invention is a compound represented by the general formula (2).
[0019]
In the general formula (2), R 2 CO is a linear or branched fatty acid residue which may contain an unsaturated bond having 6 to 18 carbon atoms, such as lauroyl group, myristoyl group, coconut fatty acid residue. And palm kernel oil fatty acid residues. A lauroyl group, a coconut oil fatty acid residue, and a palm kernel oil fatty acid residue are preferred from the viewpoint of good stability at low temperatures and easy availability.
[0020]
The hydrophilic group portion of the polyoxyethylene fatty acid monoethanolamide type nonionic surfactant represented by the general formula (2) is composed of polyoxyethylene having various addition mole numbers of oxyethylene groups, and m is an oxyethylene group. The average number of moles added is shown. The average added mole number m suitable for the present invention is 2 to 4, and particularly when m = 2, the foaming force and the viscosity increase are excellent. When m = 5, the foaming power is remarkably reduced, which is not preferable. The polyoxyethylene fatty acid monoethanol amide represented by the general formula (2) contains a fatty acid alkanol amide as an impurity. Fatty acid alkanol amide as an impurity is represented by the general formula (4)
[0021]
[Chemical 9]
Figure 0004564120
[0022]
[Wherein R 4 CO represents a linear or branched saturated or unsaturated fatty acid residue having 6 to 18 carbon atoms. ]
The fatty acid alkanol amide represented by the formula is poor in low-temperature stability. Therefore, in the polyoxyethylene fatty acid monoethanolamide type nonionic surfactant represented by the general formula (2), the lower the content of the fatty acid alkanol amide represented by the general formula (4), the better. The alkanolamide is preferably 10% by weight or less from the viewpoint of low temperature stability.
[0023]
Specific examples of the polyoxyethylene fatty acid monoethanolamide type nonionic surfactant represented by the general formula (2) include polyoxyethylene (2) coconut oil fatty acid monoethanolamide and polyoxyethylene (2) laurin. Examples thereof include acid monoethanolamide and polyoxyethylene (3) myristic acid monoethanolamide, but polyoxyethylene (2) lauric acid monoethanolamide is particularly preferable from the viewpoint of cost and availability.
[0024]
The fatty acid amide betaine type amphoteric surfactant which is the component (c) of the present invention is a compound represented by the general formula (3). In the general formula (3), R 3 CO of the lipophilic group is a fatty acid residue having 6 to 18 carbon atoms, such as lauroyl group, myristoyl group, coconut fatty acid residue, or palm kernel oil fatty acid residue. Can be mentioned.
[0025]
Specific examples of the fatty acid amide betaine type amphoteric surfactant represented by the general formula (3) include coconut oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, myristic acid amidopropyl betaine and desalted products thereof. However, amidopropyl betaine laurate is particularly preferred in terms of cost and availability.
[0026]
The composition of the components (a), (b), and (c) applied to the present invention exerts the effects of the present invention in a liquid detergent having a surfactant concentration of 20 to 30% by weight. When the total amount of the surfactant is less than 20%, foaming is insufficient, and when it exceeds 30%, gelation may be caused.
[0027]
In the liquid detergent composition of the present invention, the components (a), (b) and (c) are essential components, and the weight ratio of the component (a) to the component (b) is 5.1 / 1 to It is 2.4 / 1, and it is an essential requirement that the ratio of the component (a) to the component (c) is in a specific range of 12.75 / 1 to 4.01 / 1. The range of the mixing ratio of components (a), (b), and (c) in the present invention is illustrated as a triangular diagram in FIG. In FIG. 1, the region indicated by the solid line is the above range.
[0028]
In the ratio of the component (a) to the component (b), if the component (b) is blended more than the predetermined range, the low temperature stability cannot be maintained, and if blended less than the predetermined range, the foam of the blend Since quality deteriorates and foaming stability falls, it is not preferable.
[0029]
Further, in the ratio of the component (a) and the component (c), when the ratio of the component (c) is more than a predetermined range, the slimy feeling at the time of rinsing increases, and a refreshing feel cannot be obtained. If the blending is less than the predetermined range, sufficient initial foaming cannot be obtained, which is not preferable.
[0030]
Further, within the scope of the present invention, the following ranges have excellent performance and usability.
That is, the weight ratio of the components (a), (b), and (c) in the following specific range ((a) + (b) + (c)) / (b) is 4/1 to 6.5 / 1. ,And,
The weight ratio of (b) / (c) is 1.67 / 1 to 2.5 / 1
More preferably. This preferred range is indicated by hatching in FIG.
[0031]
The liquid detergent composition of the present invention is a transparent uniform system, and if necessary, oils such as higher alcohol, silicone oil, liquid paraffin, ester oil, moisturizing ingredients such as propylene glycol, glycerin, polyglycerin, polyethylene glycol, Water-soluble polymers such as methylcellulose and hydroxyethylcellulose, natural extracts and derivatives of animals and plants, organic acids such as citric acid and lactic acid, inorganic salts such as sodium chloride and potassium chloride, colorants such as fragrances and dyes, preservatives and chelates Ingredients that are generally blended in liquid detergent compositions such as agents and ultraviolet absorbers can be blended.
[0032]
The liquid detergent composition of the present invention can be used for hair shampoo, body detergent, facial cleanser, makeup remover, kitchen liquid detergent, medical detergent, and other various uses.
[0033]
【Example】
Production Example 1 (Preparation of polyoxyethylene (1) lauric acid diglycolamide) Diglycolamine (106 g) and sodium methoxide (1 g) were added to methyl laurate (214 g), and by-product methanol was distilled off under reduced pressure while heating and stirring (20 mmHg , 140 ° C., 1 hour) to prepare lauric acid diglycolamide (288 g). This was put in an autoclave and heated to 90 ° C., and while stirring, 44 g (1 times molar equivalent) of ethylene oxide was blown in the form of gas, reacted at 120 ° C. for 2 hours, and polyoxyethylene (1) dilaurate. Glycolamide was obtained. As described above, this polyoxyethylene (1) lauric acid diglycolamide is a mixture obtained by adding ethylene oxide to lauric acid diglycolamide, and is a compound represented by the general formula (4). Was not contained.
[0034]
Examples 1-11, Comparative Examples 1-11
Using the surfactants shown in Table 1, liquid detergent compositions containing the active ingredients in the amounts shown in Tables 2 and 3 were prepared and their performance was evaluated. The blending amount is% by weight. In addition, the compounding composition of each Example and each comparative example is shown in FIG.
[0035]
About the prepared liquid detergent, the foaming power test, the viscosity, the low temperature stability, the temporal stability, and the usability evaluation were measured and evaluated. Each measurement method and evaluation method are shown below.
[0036]
[Foaming power test]
Based on the Ross Miles test method, 200 ml of an aqueous solution having a sample concentration of 0.25% and pH = 7 was prepared, and the foaming power was measured at 40 ° C.
◎ ・ ・ ・ Very good (bubble height is 190mm or more)
○ ... good (the height of the foam is 180 mm or more and less than 190 mm)
Δ: Normally (the height of the foam is 175 mm or more and less than 180 mm)
X: Defect (the height of the foam is less than 175 mm)
[0037]
[Viscosity measurement]
Using a B-type viscometer (Iwaki Glass Co., Ltd.), the viscosity (mPa · S) of each sample at 25 ° C. was measured.
[0038]
[Low temperature stability]
The cleaning composition was stored in a low temperature (−5 ° C.) constant temperature bath for 3 days, and its appearance was visually observed and evaluated. The evaluation criteria are as follows.
○… Transparent and uniform, no turbidity or separation / separation is observed. Δ… Opaque or non-uniform, but returns to transparent and uniform when stored at room temperature. X ... Opaque or non-uniform. Even when stored at room temperature, it does not return transparent and uniform. [0039]
[Stability over time]
The cleaning composition was stored in a thermostatic bath at 50 ° C. for 1 month, and the change in hue was visually observed and evaluated. The hue was measured based on APHA.
◎ ... very good (APHA change is less than 60)
○ ・ ・ ・ Good (APHA change is 60 or more and less than 80)
△ ... Normal (APHA change is 80 or more and less than 100)
X: Defect (APHA change is 100 or more)
[0040]
[Usage evaluation]
For each cleaning composition, a feeling of use (a refreshing feeling) was evaluated with a sensuality by using a panel of 10 men and 5 men and women. The evaluation criteria are as follows.
◎ ・ ・ ・ Very good (8-10 people out of 10 answered good)
○ ・ ・ ・ Good (6-7 out of 10 responded good)
△ ... Usually (3 to 10 people answered that 10 people are good)
× ・ ・ ・ Poor (0 to 2 out of 10 people answered good)
[0041]
[Table 1]
Figure 0004564120
[0042]
[Table 2]
Figure 0004564120
[0043]
[Table 3]
Figure 0004564120
[0044]
As is clear from the results shown in Tables 2 and 3, all of the liquid detergent compositions of the present invention were excellent in foaming power, low-temperature stability and stability over time, and did not have a feeling of tension.
In addition, all of the liquid detergent compositions of the present invention of Examples 1 to 11 were creamy foaming, did not feel slimy at the time of rinsing, and did not rough their hands.
[0045]
【The invention's effect】
According to the present invention, it is hypoallergenic, has excellent low-temperature stability, stability over time, good foaming and foam stability, excellent foam creaminess, no slickness during rinsing, A liquid detergent composition having a refreshing feel without giving a feeling of feeling or tension is obtained.
[Brief description of the drawings]
FIG. 1 is a triangular diagram showing a blending range of components (a), (b) and (c) of claims 1 and 2;
FIG. 2 is a triangular diagram showing the composition of the examples and comparative examples.

Claims (3)

(a)一般式(1)
Figure 0004564120
[式中R1は炭素数10〜16の直鎖もしくは分枝鎖のアルキル基またはアルケニル基、nは0〜5の平均付加モル数、Mは水素カチオンまたはアルカリ金属カチオンを示す。]
で示されるサルフェート型アニオン界面活性剤、
(b)一般式(2)
Figure 0004564120
[式中R2COは炭素数6〜18の直鎖もしくは分枝鎖の飽和または不飽和脂肪酸残基を示し、mは2〜4の平均付加モル数を示す。]
で示されるポリオキシエチレン脂肪酸モノエタノールアマイド型非イオン界面活性剤および
(c)一般式(3)
Figure 0004564120
[式中R3COは炭素数6〜18の直鎖もしくは分枝鎖の飽和または不飽和脂肪酸残基を示し、pは2または3、R4およびR5は各々独立に水素原子または炭素数1〜3のアルキル基を示す。]
で示される脂肪酸アミドベタイン型両性界面活性剤を必須成分として含有する液体洗浄剤組成物であって、成分(a)、(b)および(c)の界面活性剤濃度が液体洗浄剤組成物当たり20〜30重量%であり、成分(a)と成分(b)の重量比が5.1/1〜2.4/1であり、かつ成分(a)と成分(c)の重量比が12.75/1〜4.01/1であることを特徴とする液体洗浄剤組成物。
(A) General formula (1)
Figure 0004564120
[Wherein R 1 represents a linear or branched alkyl group or alkenyl group having 10 to 16 carbon atoms, n represents an average addition mole number of 0 to 5, and M represents a hydrogen cation or an alkali metal cation. ]
A sulfate type anionic surfactant represented by the formula:
(B) General formula (2)
Figure 0004564120
[Wherein R 2 CO represents a linear or branched saturated or unsaturated fatty acid residue having 6 to 18 carbon atoms, and m represents an average addition mole number of 2 to 4. ]
A polyoxyethylene fatty acid monoethanolamide type nonionic surfactant represented by formula (3) and (c)
Figure 0004564120
[Wherein R 3 CO represents a linear or branched saturated or unsaturated fatty acid residue having 6 to 18 carbon atoms, p is 2 or 3, and R 4 and R 5 are each independently a hydrogen atom or a carbon number. 1-3 alkyl groups are shown. ]
A liquid detergent composition comprising the fatty acid amide betaine type amphoteric surfactant represented by formula (1) as an essential component, wherein the surfactant concentrations of the components (a), (b) and (c) are per liquid detergent composition 20 to 30% by weight, the weight ratio of component (a) to component (b) is 5.1 / 1 to 2.4 / 1, and the weight ratio of component (a) to component (c) is 12 A liquid detergent composition characterized by having a ratio of .75 / 1 to 4.01 / 1.
前記成分(a)、(b)、(c)において、
((a)+(b)+(c))/(b)の重量比が4/1〜6.5/1であり、かつ(b)/(c)の重量比が1.67/1〜2.5/1であることを特徴とする請求項1記載の液体洗浄剤組成物。
In the components (a), (b) and (c),
The weight ratio of ((a) + (b) + (c)) / (b) is 4/1 to 6.5 / 1, and the weight ratio of (b) / (c) is 1.67 / 1. The liquid detergent composition according to claim 1, which is ˜2.5 / 1.
不純物としての一般式(4)
Figure 0004564120
[式中R4COは炭素数6〜18の直鎖もしくは分枝鎖の飽和または不飽和脂肪酸残基を示す。]
で示される脂肪酸アルカノールアマイドの含有率が10重量%未満である前記一般式(2)で示されるポリオキシエチレン脂肪酸モノエタノールアマイドを用いることを特徴とする請求項1または2に記載の液体洗浄剤組成物。
General formula (4) as impurity
Figure 0004564120
[Wherein R 4 CO represents a linear or branched saturated or unsaturated fatty acid residue having 6 to 18 carbon atoms. ]
The liquid detergent according to claim 1 or 2, wherein the polyoxyethylene fatty acid monoethanolamide represented by the general formula (2) is used, wherein the content of the fatty acid alkanolamide represented by the formula is less than 10% by weight. Composition.
JP31767299A 1999-11-09 1999-11-09 Liquid detergent composition Expired - Fee Related JP4564120B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51119004A (en) * 1975-03-24 1976-10-19 Unilever Nv Aqueous hair shampoo
JPS6086198A (en) * 1983-10-19 1985-05-15 株式会社資生堂 Detergent composition
JPH07102292A (en) * 1993-10-04 1995-04-18 Kawaken Fine Chem Co Ltd Polyoxyethylene fatty acid amide type surfactant and detergent composition containing the same
JPH1077255A (en) * 1996-09-04 1998-03-24 Kao Corp Production of polyoxyalkylene amide of fatty acid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51119004A (en) * 1975-03-24 1976-10-19 Unilever Nv Aqueous hair shampoo
JPS6086198A (en) * 1983-10-19 1985-05-15 株式会社資生堂 Detergent composition
JPH07102292A (en) * 1993-10-04 1995-04-18 Kawaken Fine Chem Co Ltd Polyoxyethylene fatty acid amide type surfactant and detergent composition containing the same
JPH1077255A (en) * 1996-09-04 1998-03-24 Kao Corp Production of polyoxyalkylene amide of fatty acid

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