JP4792628B2

JP4792628B2 - Cleaning composition

Info

Publication number: JP4792628B2
Application number: JP2000315701A
Authority: JP
Inventors: 剛司市島; 球竹内; 昌彦嶋田
Original assignee: NOF Corp
Current assignee: NOF Corp
Priority date: 2000-10-16
Filing date: 2000-10-16
Publication date: 2011-10-12
Anticipated expiration: 2020-10-16
Also published as: JP2002121591A

Description

【０００１】
【発明の属する技術分野】
本発明は低刺激性で、起泡性、泡安定性に優れ、良好な泡質で、洗い上がりの使用感に優れ、適度な洗浄力を有し、かつ経時安定性の良好な洗浄剤組成物に関する。
【０００２】
【従来の技術】
従来より、身体用洗浄剤の主剤として用いられている陰イオン性界面活性剤は、洗浄力や起泡力に優れている。しかし陰イオン性界面活性剤を単独で使用すると、洗浄力が強すぎるために肌のカサツキや肌荒れが起こり、またぬめり感が強いため使用感が悪くなる。そこで陰イオン性界面活性剤が有している洗浄力や起泡力を生かすために、比較的刺激性が低いといわれているアルキルベタイン、アミドプロピルベタイン、イミダゾリニウムベタインといった両性界面活性剤と陰イオン性界面活性剤を組み合わせたり、またジエタノールアミド、モノエタノールアミドなどの非イオン性界面活性剤と組み合わせることで刺激性を緩和し、泡質や使用感を向上させる手段が取られている。
【０００３】
しかし、これらの試みはある程度の効果は得られているものの、解決されていない欠点も多いものであった。例えば、特開平１１−２９４４６号公報ではポリオキシエチレンアルキルエーテルサルフェート型陰イオン性界面活性剤とＮ―アシルグルタミン酸型陰イオン性界面活性剤と、アルキルベタイン型両性界面活性剤またはアミドベタイン型両性界面活性剤を組み合わせた組成物、また特開平６−４９４８４号公報ではアミドエーテルサルフェート型陰イオン性界面活性剤とイミダゾリニウムベタイン型両性界面活性剤を組み合わせた組成物が開示されている。しかしこれらはある程度の低刺激性は得られるものの、十分な起泡力が得られず、洗浄時にぬめり感があり、洗浄後につっぱり感が残り、さっぱりとした感触が得られず、泡質が粗い。また、特公平２−２６６７７号公報では、アルキロイルアルキルタウリン塩型陰イオン性界面活性剤とアルキロイルアミドベタイン型両性界面活性剤とアルキロールアミド型非イオン性界面活性剤を組み合わせた組成物が開示されている。しかし、この組成物もある程度の低刺激性は得られ、また起泡性は高いものの、泡質が粗く、泡に持続性がなく、さらに洗浄時にぬめり感があり、洗浄後につっぱり感が残り、さっぱりとした感触が得られず、満足のいく使用感を得ることができない。これらのように、陰イオン性界面活性剤と両性界面活性剤やアルキロールアミド型非イオン性界面活性剤の組み合わせでは未だ満足のいく洗浄剤組成物が得られていなかった。
【０００４】
【発明が解決しようとする課題】
本発明は、低刺激性で、起泡性、泡安定性に優れ、良好な泡質で、洗い上がりの使用感に優れ、適度な洗浄力を有し、かつ経時安定性の良好な洗浄剤組成物を提供することが課題である。
【０００５】
【課題を解決するための手段】
すなわち、本発明は、下記の（ａ）および（ｂ）を含有し、（ａ）が０．５〜３５重量％であり、（ｂ）が０．４〜２５重量％であり、（ａ）＋（ｂ）が３〜５０重量％であり、（ａ）と（ｂ）の重量比が２０／１〜１／８であることを特徴とする洗浄剤組成物である。
（ａ）式（１）で表わされるアルキルイミノビス（β―ヒドロキシプロパンスルホン酸）塩
【０００６】
【化２】
【０００７】
（式中Ｒ¹は炭素数８〜２２の直鎖もしくは分岐のアルキル基またはアルケニル基、Ｍ¹およびＭ²は水素原子、アルカリ金属、アルカリ土類金属、アンモニウム、有機アンモニウムを示す。）
（ｂ）アシルメチルタウリン型陰イオン性界面活性剤
【０００８】
【発明の実施の形態】
式（１）で示されるアルキルイミノビス（β―ヒドロキシプロパンスルホン酸）塩は、Ｒ¹が炭素数８〜２２の直鎖もしくは分岐のアルキル基またはアルケニル基であり、好ましくはＲ¹が炭素数１２〜１８の直鎖もしくは分岐鎖のアルキルまたはアルケニル基である。具体的には、オクチル基、ノニル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、オクタデシル基、ノナデシル基、エイコシル基、ヘンエシコシル基、ドコシル基、オクタデセニル基、オクタデカジエニル基、さらにこれらの混合物であるヤシ油アルキル基、パーム核油アルキル基、牛脂アルキル基等が挙げられる。炭素数が７以下では毛髪や皮膚への刺激が強くなり、起泡性、泡安定性が低くなり、良好な泡質が得られず、洗い上がりの使用感が悪くなり、洗浄力が弱くなる。炭素数が２３以上では起泡性および泡安定性が低くなり、良好な泡質が得られず、洗浄力が過度になり、洗い上がりの使用感および経時安定性が悪くなる。
【０００９】
Ｍ¹およびＭ²は水素原子、アルカリ金属、アルカリ土類金属、アンモニウム、有機アンモニウムであり、具体的には、リチウム、ナトリウム、カリウム、１／２マグネシウム、１／２カルシウム、モノエタノールアミン、ジエタノールアミン、トリエタノールアミン等が挙げられ、Ｍ¹とＭ²は同一であっても異なっていても良い。
【００１０】
（ｂ）成分は陰イオン性界面活性剤であればいずれでも良いが、例えば、脂肪酸塩型陰イオン性界面活性剤、アルキル硫酸型陰イオン性界面活性剤、ポリオキシエチレンアルキルエーテル硫酸型陰イオン性界面活性剤、ポリオキシエチレン脂肪酸アミドエーテル硫酸型陰イオン性界面活性剤、アシルメチルタウリン型陰イオン性界面活性剤、アシルアミノ酸型陰イオン性界面活性剤、スルホコハク酸型陰イオン性界面活性剤等が挙げられる。
【００１１】
さらに、具体的には、脂肪酸の炭素数が８〜２０の脂肪酸で対イオンがアルカリ金属、アンモニウムまたは有機アンモニウム、好ましくは脂肪酸の炭素数が１０〜１８の脂肪酸で対イオンが有機アンモニウムである脂肪酸塩型陰イオン性界面活性剤、アルキル基の炭素数が８〜２０で対イオンが水素原子、アルカリ金属、アルカリ土類金属、アンモニウムまたは有機アンモニウム、好ましくはアルキル基の炭素数が１０〜１８で対イオンがアルカリ金属または有機アンモニウムであるアルキル硫酸型陰イオン性界面活性剤、アルキル基の炭素数が８〜２０、エチレンオキシドの平均付加モル数が２〜４、対イオンが水素原子、アルカリ金属、アルカリ土類金属、アンモニウムまたは有機アンモニウム、好ましくはアルキル基の炭素数が１０〜１８でエチレンオキシドの平均付加モル数が２〜４で対イオンがアルカリ金属または有機アンモニウムであるポリオキシエチレンアルキルエーテル硫酸型陰イオン性界面活性剤、アシル基の炭素数が８〜２０でエチレンオキシドの平均付加モル数が２〜４で対イオンが水素原子、アルカリ金属、アルカリ土類金属、アンモニウムまたは有機アンモニウムであり、好ましくはアシル基の炭素数が１０〜１８でエチレンオキシドの平均付加モル数が２〜４で対イオンがアルカリ金属、アルカリ土類金属または有機アンモニウムであるポリオキシエチレン脂肪酸アミドエーテル硫酸型陰イオン性界面活性剤、アシル基の炭素数が８〜２０で対イオンが水素原子、アルカリ金属、アルカリ土類金属、アンモニウムまたは有機アンモニウムであり、好ましくはアシル基の炭素数が１０〜１８で対イオンがアルカリ金属または有機アンモニウムであるアシルメチルタウリン型陰イオン性界面活性剤、アシル基の炭素数が８〜２０のアシルグルタミン酸あるいはアシルサルコシンのアルカリ金属塩、アンモニウム塩または有機アンモニウム塩であり、好ましくはアシル基の炭素数が１０〜１８のアシルグルタミン酸あるいはアシルサルコシンのアルカリ金属塩または有機アンモニウム塩であるアシルアミノ酸型陰イオン性界面活性剤、アシル基の炭素数が８〜２０で対イオンが水素原子、アルカリ金属、アルカリ土類金属、アンモニウムまたは有機アンモニウムであり、好ましくはアシル基の炭素数が１０〜１８で対イオンがアルカリ金属または有機アンモニウムであるスルホコハク酸型陰イオン性界面活性剤が挙げられる。
好ましい陰イオン性界面活性剤としてはポリオキシエチレンアミドエーテル硫酸型陰イオン性界面活性剤、アシルメチルタウリン型陰イオン性界面活性剤、アシルアミノ酸型陰イオン性界面活性剤、スルホコハク酸型陰イオン性界面活性剤等が挙げられ、さらに好ましくはアシルメチルタウリン型陰イオン性界面活性剤である。
【００１２】
（ａ）は０．５〜３５重量％であり、好ましくは０．６〜３３重量％である。
（ａ）が０．５重量％より小さいと起泡性や泡安定性が低くなり、良好な泡質、洗浄後のさっぱり感が得られず、洗浄力が弱くなる。（ａ）が３５重量％より大きいと洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られない。
【００１３】
（ｂ）は０．４〜２５重量％であり、好ましくは０．５〜２３重量％である。
（ｂ）が０．４重量％より小さいと起泡性や泡安定性が低くなり、良好な泡質、洗浄後のさっぱり感が得られず、洗浄力が弱くなる。（ｂ）が２５重量％より大きいと刺激性が強くなり、良好な泡質、洗浄後のさっぱり感が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄力が過度になり、経時安定性が悪くなる。
【００１４】
（ａ）＋（ｂ）は３〜５０重量％であり、好ましくは５〜４５重量％である。
（ａ）＋（ｂ）が３重量％より小さいと起泡性や泡安定性が低くなり、良好な泡質、洗浄後のさっぱり感が得られず、洗浄力が弱くなる。（ａ）＋（ｂ）が５０重量％より大きいと刺激性が強くなり、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られず、洗浄力が過度になり、経時安定性が悪くなる。
【００１５】
（ａ）と（ｂ）の重量比は（ａ）／（ｂ）は２０／１〜１／８であり、好ましくは１５／１〜１／６である。（ａ）／（ｂ）が２０／１より大きいと洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られなくなる。（ａ）／（ｂ）が１／８より小さいと刺激性が強くなり、泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄力が過度になり、経時安定性が悪くなる。
【００１６】
本発明の洗浄剤組成物は、所望により一般に配合される成分、例えば、セタノール、ステアリルアルコール等の高級アルコール、グリセリン、エチレングリコール、プロピレングリコール、１、３−ブタンジオール等の多価アルコール、スクワラン、ホホバ油、オリーブ油、ヒマシ油、ラノリン、レシチン等の油分、セルロ―スエーテル型陽イオン性高分子化合物、陽イオン性ポリビニルピロリドン誘導体、陽イオン性ポリアクリル酸誘導体、陽イオン性ポリアミド誘導体、ポリ塩化ジメチルジアリルアンモニウム、塩化ジメチルジアリルアンモニウムとアクリル酸アミドの共重合体、アルキルポリエチレンイミン等の陽イオン性高分子化合物、高重合メチルポリシロキサン、ジメチルシロキサン・メチル（ポリオキシエチレン）シロキサン共重合体等のシリコーン誘導体、エチレングリコールジステアレート、スチレンポリマー等のパール化剤、パラオキシ安息香酸エステル、安息香酸ナトリウム、フェノキシエタノール等の防腐剤、５−メチル−２−イソプロピルシクロヘキサノール、トウガラシチンキ等のトニック剤、エチレンジアミン四酢酸塩、クエン酸、ニトリロトリ酢酸三ナトリウム等のキレート剤、ベンゾフェノン誘導体、ベンゾトリアゾール誘導体等の紫外線吸収剤、色素および香料を本発明の効果を損なわない程度に含むことができる。
【００１７】
【発明の効果】
本発明の洗浄剤組成物は、低刺激性で、起泡性、泡安定性に優れ、良好な泡質で、洗い上がりの使用感に優れ、適度な洗浄力を有し、かつ経時安定性が良好であるので、ヘアシャンプー組成物、ボディシャンプー組成物、ハンドソープ組成物、洗顔用組成物、食器用洗浄剤組成物等に利用できる。
【００１８】
【実施例】
本発明を実施例により具体的に説明する。実施例で行った試験法及び評価法を以下に説明する。
（１）皮膚刺激性
蛋白質変性率により評価した。すなわち、水系高速液体クロマトグラフィーにより、卵白アルブミン０．０２５重量％濃度のｐＨ７緩衝溶液を用いて、試料濃度１％になるように調製した試料の２２０ｎｍの吸収ピークの高さを測定し、次の式により蛋白質変性率を求めた。
蛋白質変性率（％）＝［（ＨＯ−ＨＳ）／ＨＯ］×１００
ＨＯ；試料未添加のときの吸収ピークの高さ
ＨＳ；試料を添加したときの吸収ピークの高さ
蛋白質変性率により次の３段階で評価した。
皮膚刺激性が弱い。（蛋白質変性率３０％未満）
皮膚刺激性が中程度。（蛋白質変性率３０％以上６０％未満）
皮膚刺激性が強い。（蛋白質変性率６０％以上）
【００１９】
（２）起泡性
洗浄剤組成物を有効分で１重量％濃度になるように調製した水溶液をロスマイルス法により、４０℃で試料投入直後と５分後の泡高さを測定した。試料投入直後の泡高さが１５０ｍｍ以上のものを起泡性が良好な組成物とし、さらに次の式より求められる泡の持続率が９０％以上のものを泡の持続性が良い組成物と評価した。
泡の持続率（％）＝［（５分後の泡高さ）／（試料投入直後の泡高さ）］×１００
（３）泡質
２０名の女性をパネラーとし、洗浄剤組成物５ｇで手指を洗浄した時の泡質を評価した。泡が細かくよく伸びると感じた場合を２点、泡がやや粗いと感じた場合を１点、泡が粗く壊れやすいと感じた場合を０点として２０名の合計値を求めて、次の３段階で評価した。
泡質が良好である。（合計値３０点以上）
泡質がやや悪い。（合計値２０点以上３０点未満）
泡質が悪い。（合計値２０点未満）
【００２０】
（４）洗浄力
洗浄剤組成物を有効分で１重量％濃度になるように調製した水溶液を用いて、Ｔｅｒｇ−Ｏ−ｔｏｍｅｔｅｒで、ウールモスリンの人工汚染布を４０℃、７０ｒｐｍ、１０分の条件で洗浄する。汚染布を乾燥後、カラーコンピューターで表面反射率を測定し、下記の式より洗浄力を計算し、次の３段階で評価した。
洗浄力（％）＝（Ａ／Ｂ）×１００
Ａ：（洗浄後の汚染布の反射率）−（洗浄前の汚染布の反射率）
Ｂ：（ウールモスリンの反射率）−（洗浄前の汚染布の反射率）
洗浄力が過度。（洗浄力６０％以上）
洗浄力が良好。（洗浄力２５％以上６０％未満）
洗浄力が弱い。（洗浄力２５％未満）
（５）洗浄時のぬめり感
２０名の女性をパネラーとし、洗浄剤組成物５ｇで手指を洗浄した時のぬめり感を評価した。ぬめり感を感じなかった場合を２点、ややぬめり感があると感じた場合を１点、ぬめり感がしつこくてすすぎに時間がかかると感じた場合を０点として２０名の合計値を求めて、次の３段階で評価した。
ぬめり感がない。（合計値３０点以上）
ややぬめり感がある。（合計値２０点以上３０点未満）
ぬめり感が強い。（合計値２０点未満）
【００２１】
（６）洗浄後の肌のつっぱり感
２０名の女性をパネラーとし、洗浄剤組成物５ｇで手指を洗浄した後の肌のつっぱり感を評価した。肌が全くつっぱらないと感じた場合を２点、少しつっぱると感じた場合を１点、非常につっぱると感じた場合を０点として２０名の合計値を求めて、次の３段階で評価した。
つっぱり感がない。（合計値３０点以上）
少しつっぱり感がある。（平均値２０点以上３０点未満）
つっぱり感が強い。（平均値２０点未満）
（７）洗浄後のさっぱり感
２０名の女性をパネラーとし、洗浄剤組成物５ｇで手指を洗浄した後のさっぱり感を評価した。非常にさっぱりすると感じた場合を２点、あまりさっぱりしないと感じた場合を１点、ぬるついて全くさっぱりしないと感じた場合を０点として２０名の合計値を求めて、次の３段階で評価した。
十分なさっぱり感が得られる。（合計値３０点以上）
さっぱり感があまり得られない。（合計値２０点以上３０点未満）
さっぱり感が得られない。（合計値２０点未満）
【００２２】
（８）経時安定性
洗浄剤組成物を−５℃で１２時間保存した後に４５℃で１２時間保存し、これを１ヶ月間毎日繰り返した。洗浄剤組成物の外観を観察して、次の２段階で評価した。
〇：安定性良好。（１ヶ月間外観の変化がない）
×：安定性不良。（１ヶ月以内に分離や沈澱が認められるか、または固化する）
参考例１〜１０、実施例１１〜１５、参考例１６、実施例１７〜１９、参考例２０〜２５および比較例１〜２５
表１〜１０に示す洗浄剤組成物を作製し、上記の評価を行った。結果を表１〜１０に示す。
【００２３】
なお、表中の略称は以下に示すとおりである。
界面活性剤１：式（１）のＲ¹がドデシル基、Ｍ¹が水素原子、Ｍ²がナトリウムである。
界面活性剤２：式（１）のＲ¹がテトラデシル基、Ｍ¹が水素原子、Ｍ²がカリウムである。
界面活性剤３：式（１）のＲ¹がドデシル基、Ｍ¹が水素原子、Ｍ²がトリエタノールアミンである。
界面活性剤４：式（１）のＲ¹がヘキサデシル基、Ｍ¹が水素原子、Ｍ²がナトリウムである。
Ｒ²ＣＯＮＲ³（ＣＨ₂ＣＨ₂Ｏ）nＳＯ₃Ｍ³ （２）
陰イオン性界面活性剤１：式（２）のＲ²ＣＯがヤシ油アシル基、Ｒ³が水素原子、ｎが４、Ｍ³がナトリウムである。
陰イオン性界面活性剤２：式（２）のＲ²ＣＯがミリストイル基、Ｒ³が水素原子、ｎが４、Ｍ³が１／２マグネシウムである。
陰イオン性界面活性剤３：式（２）のＲ²ＣＯがラウロイル基、Ｒ³がメチル基、ｎが３、Ｍ³がナトリウムである。
【００２４】
【化３】
【００２５】
陰イオン性界面活性剤４：式（３）のＲ⁴ＣＯがラウロイル基、Ｒ⁵がメチル基、Ｍ⁴がナトリウムである。
陰イオン性界面活性剤５：式（３）のＲ⁴ＣＯがヤシ油アシル基、Ｒ⁵がメチル基、Ｍ⁴がナトリウムである。
陰イオン性界面活性剤６：式（３）のＲ⁴ＣＯがヤシ油アシル基、Ｒ⁵がメチル基、Ｍ⁴が１／２マグネシウムである。
陰イオン性界面活性剤７：式（３）のＲ⁴ＣＯがラウロイル基、Ｒ⁵が水素原子、Ｍ⁴がカリウムである。
陰イオン性界面活性剤８：（３）のＲ⁴ＣＯがヤシ油アシル基、Ｒ⁵がメチル基、Ｍ⁴がタウリンナトリウムである。
陰イオン性界面活性剤９：式（２）のＲ²ＣＯがヤシ油アシル基、Ｒ³が水素、ｎが４、Ｍ³がナトリウムである。
陰イオン性界面活性剤１０：式（３）のＲ⁴ＣＯがラウロイル基、Ｒ⁵がメチル基、Ｍ⁴がナトリウムである。
【００２６】
【表１】
【００２７】
【表２】
【００２８】
【表３】
【００２９】
【表４】
【００３０】
表１〜４から、本発明の参考例１〜１０の洗浄剤組成物は、低刺激性で、起泡性、洗い上がりの使用感に優れ、適度な洗浄力を有し、かつ経時安定性の良好な洗浄剤組成物であることがわかる。
比較例１の洗浄剤組成物は（ａ）が０．５重量％より小さいため、起泡性や泡安定性が低くなり、良好な泡質、洗浄後のさっぱり感が得られず、洗浄力が弱い。
比較例２の洗浄剤組成物は（ａ）＋（ｂ）が５０重量％を超えているため、刺激性が強くなり、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られず、洗浄力が過度になり、経時安定性が悪い。
比較例３の洗浄剤組成物は（ａ）／（ｂ）の重量比が１／８より小さいため、刺激性が強くなり、泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄力が過度になり、経時安定性が悪い。
比較例４の洗浄剤組成物は（ａ）／（ｂ）の重量比が２０／１より大きいため、洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られない。
比較例５の洗浄剤組成物は（ａ）＋（ｂ）が３重量％より小さいため、起泡性や泡安定性が低くなり、良好な泡質、洗浄後のさっぱり感が得られず、洗浄力が弱い。
比較例６の洗浄剤組成物は（ｂ）が２５重量％を超えているため、刺激性が強くなり、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄力が過度になり、経時安定性が悪い。
比較例７の洗浄剤組成物は（ａ）／（ｂ）の重量比が１／８より小さいため、刺激性が強くなり、泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄力が過度になり、経時安定性が悪い。
比較例８の洗浄剤組成物は（ａ）が３５重量％を超えているため、洗浄後のさっぱり感が得られず、洗浄後の肌のつっぱり感が強くなる。
比較例９の洗浄剤組成物は（ｂ）が０．４重量％より小さいため、起泡性や泡安定性が低くなり、良好な泡質、洗浄後のさっぱり感が得られず、洗浄力が弱い。
【００３１】
【表５】
【００３２】
【表６】
【００３３】
【表７】
【００３４】
表５〜７から、本発明の実施例１１〜１５、参考例１６、実施例１７〜１９の洗浄剤組成物は、低刺激性で、起泡性、洗い上がりの使用感に優れ、適度な洗浄力を有し、かつ経時安定性の良好な洗浄剤組成物であることがわかる。
比較例１０の洗浄剤組成物は（ａ）＋（ｂ）が３重量％より小さいため、起泡性や泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄力が弱い。
比較例１１の洗浄剤組成物は（ａ）＋（ｂ）が５０重量％を超えているため、刺激性が強くなり、洗浄時のぬめり感が強く、洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られず、洗浄力が過度になり、経時安定性が悪い。
比較例１２の洗浄剤組成物は（ａ）／（ｂ）の重量比が１／８より小さいため、刺激性が強くなり、泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄力が過度になり、経時安定性が悪い。
比較例１３の洗浄剤組成物は（ａ）／（ｂ）の重量比が２０／１より大きいため、洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られない。
比較例１４の洗浄剤組成物は（ａ）＋（ｂ）が３重量％より小さいため、起泡性や泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄力が弱い。
比較例１５の洗浄剤組成物は（ａ）＋（ｂ）が５０重量％を超えているため、刺激性が強くなり、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られず、洗浄力が過度になり、経時安定性が悪い。
比較例１６の洗浄剤組成物は（ａ）／（ｂ）の重量比が１／８より小さいため、刺激性が強くなり、泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄力が過度になり、経時安定性が悪い。
比較例１７の洗浄剤組成物は（ａ）／（ｂ）の重量比が２０／１より大きいため、洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られない。
【００３５】
【表８】
【００３６】
【表９】
【００３７】
【表１０】
【００３８】
表８〜１０から、本発明の参考例２０〜２５の洗浄剤組成物は、低刺激性で、起泡性、洗い上がりの使用感に優れ、適度な洗浄力を有し、かつ経時安定性の良好な洗浄剤組成物であることがわかる。
比較例１８の洗浄剤組成物は（ａ）＋（ｂ）が３重量％より小さいため、起泡性や泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄力が弱い。
比較例１９の洗浄剤組成物は（ａ）＋（ｂ）が５０重量％を超えているため、刺激性が強くなり、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られず、洗浄力が過度になり、経時安定性が悪い。
比較例２０の洗浄剤組成物は（ａ）／（ｂ）の重量比が１／８より小さいため、刺激性が強くなり、泡安定性が低くなり、良好な泡質および洗浄後のさっぱり感が得られず、洗浄時のぬめり感がおよび洗浄後の肌のつっぱり感が強くなり、洗浄力が過度になり、経時安定性が悪い。
比較例２１の洗浄剤組成物は（ａ）／（ｂ）の重量比が２０／１より大きいため、洗浄後の肌のつっぱり感および洗浄後のさっぱり感が得られない。
比較例２２の洗浄剤組成物は（ａ）／（ｂ）の重量比が１／８より小さいため、刺激性が強くなり、泡安定性が低くなり、良好な泡質が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られず、洗浄力が過度になり、経時安定性が悪い。
比較例２３の洗浄剤組成物は陰イオン性界面活性剤と従来の両性界面活性剤を組み合わせたため、刺激性が強くなり、起泡性が低くなり、良好な泡質が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られない。
比較例２４の洗浄剤組成物は陰イオン性界面活性剤と従来の両性界面活性剤を組み合わせたため、刺激性が強くなり、起泡性が低くなり、良好な泡質が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られない。
比較例２５の洗浄剤組成物は陰イオン性界面活性剤と従来の両性界面活性剤と非イオン性界面活性剤を組み合わせたため、刺激性が強くなり、泡安定性が低くなり、良好な泡質が得られず、洗浄時のぬめり感および洗浄後の肌のつっぱり感が強くなり、洗浄後のさっぱり感が得られない。[0001]
BACKGROUND OF THE INVENTION
The present invention is a low-irritant detergent composition with excellent foaming and foam stability, good foam quality, excellent feeling after washing, suitable detergency, and good stability over time. Related to things.
[0002]
[Prior art]
Conventionally, an anionic surfactant used as a main ingredient of a body cleaning agent is excellent in cleaning power and foaming power. However, when an anionic surfactant is used alone, the detergency is too strong, causing skin roughness and rough skin, and a feeling of slimness is strong, resulting in poor usability. Therefore, in order to make use of the detergency and foaming power possessed by anionic surfactants, amphoteric surfactants such as alkyl betaines, amidopropyl betaines, and imidazolinium betaines, which are said to have relatively low irritation, In combination with anionic surfactants or with nonionic surfactants such as diethanolamide and monoethanolamide, measures have been taken to reduce irritation and improve foam quality and feeling of use.
[0003]
However, although these attempts have achieved a certain degree of effect, they have many unsolved drawbacks. For example, Japanese Patent Application Laid-Open No. 11-29446 discloses a polyoxyethylene alkyl ether sulfate type anionic surfactant, an N-acyl glutamic acid type anionic surfactant, an alkylbetaine type amphoteric surfactant or an amide betaine type amphoteric interface. JP-A-6-49484 discloses a composition in which an activator is combined, and a composition in which an amide ether sulfate type anionic surfactant and an imidazolinium betaine type amphoteric surfactant are combined. However, although they can be moderately hypoallergenic, sufficient foaming power cannot be obtained, there is a feeling of sliminess during washing, a feeling of tension remains after washing, a refreshing feel is not obtained, and the foam quality is rough . JP-B-2-26677 discloses a composition comprising an alkyloylalkyltaurine salt type anionic surfactant, an alkyloylamide betaine type amphoteric surfactant, and an alkylolamide type nonionic surfactant. It is disclosed. However, although this composition also has a certain level of hypoallergenicity and high foaming properties, the foam quality is rough, the foam is not durable, and there is a feeling of sliminess during washing, and a feeling of tension remains after washing, A refreshing feel cannot be obtained and a satisfactory usability cannot be obtained. As described above, a satisfactory cleaning composition has not yet been obtained with a combination of an anionic surfactant and an amphoteric surfactant or an alkylolamide type nonionic surfactant.
[0004]
[Problems to be solved by the invention]
The present invention is a detergent with low irritation, excellent foaming and foam stability, good foam quality, excellent use feeling after washing, suitable detergency, and good stability over time. The challenge is to provide a composition.
[0005]
[Means for Solving the Problems]
That is, this invention contains the following (a) and (b), (a) is 0.5-35 weight%, (b) is 0.4-25 weight%, (a) + (B) is 3 to 50% by weight, and the weight ratio of (a) and (b) is 20/1 to 1/8.
(A) Alkyliminobis (β-hydroxypropanesulfonic acid) salt represented by the formula (1)
[Chemical 2]
[0007]
(Wherein R ¹ represents a linear or branched alkyl group or alkenyl group having 8 to 22 carbon atoms, and M ¹ and M ² represent a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or organic ammonium.)
(B) Acylmethyl taurine type anionic surfactant
DETAILED DESCRIPTION OF THE INVENTION
In the alkyliminobis (β-hydroxypropanesulfonic acid) salt represented by the formula (1), R ¹ is a linear or branched alkyl group or alkenyl group having 8 to 22 carbon atoms, preferably R ¹ is carbon number. 12 to 18 linear or branched alkyl or alkenyl groups. Specifically, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, eicosyl group, hensicosyl group, docosyl group, Examples thereof include an octadecenyl group, an octadecadienyl group, and a coconut oil alkyl group, a palm kernel oil alkyl group, and a beef tallow alkyl group that are a mixture thereof. When the number of carbon atoms is 7 or less, the irritation to hair and skin becomes strong, foaming properties and foam stability are lowered, good foam quality is not obtained, the feeling after washing is deteriorated, and the cleaning power is weakened. . When the number of carbon atoms is 23 or more, the foamability and foam stability are lowered, a good foam quality cannot be obtained, the detergency is excessive, and the feeling after use and the stability over time are deteriorated.
[0009]
M ¹ and M ² are a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or an organic ammonium. Specifically, lithium, sodium, potassium, 1/2 magnesium, 1/2 calcium, monoethanolamine, diethanolamine Triethanolamine and the like, and M ¹ and M ² may be the same or different.
[0010]
The component (b) may be any anionic surfactant, for example, fatty acid salt type anionic surfactant, alkyl sulfate type anionic surfactant, polyoxyethylene alkyl ether sulfate type anion. Surfactant, polyoxyethylene fatty acid amide ether sulfuric acid type anionic surfactant, acylmethyl taurine type anionic surfactant, acylamino acid type anionic surfactant, sulfosuccinic acid type anionic surfactant Etc.
[0011]
More specifically, the fatty acid whose fatty acid has 8 to 20 carbon atoms and whose counter ion is alkali metal, ammonium or organic ammonium, preferably fatty acid whose fatty acid has 10 to 18 carbon atoms and whose counter ion is organic ammonium. Salt type anionic surfactant, alkyl group having 8 to 20 carbon atoms and counter ion being hydrogen atom, alkali metal, alkaline earth metal, ammonium or organic ammonium, preferably alkyl group having 10 to 18 carbon atoms An alkylsulfuric acid type anionic surfactant whose counter ion is an alkali metal or organic ammonium, an alkyl group having 8 to 20 carbon atoms, an average addition mole number of ethylene oxide of 2 to 4, a counter ion being a hydrogen atom, an alkali metal, Alkaline earth metal, ammonium or organic ammonium, preferably the alkyl group has 10 to 10 carbon atoms Polyoxyethylene alkyl ether sulfate anionic surfactant having an average addition mole number of ethylene oxide of 2 to 4 and a counter ion of alkali metal or organic ammonium, an average of ethylene oxide having 8 to 20 carbon atoms in the acyl group The addition mole number is 2 to 4 and the counter ion is a hydrogen atom, alkali metal, alkaline earth metal, ammonium or organic ammonium, preferably the acyl group has 10 to 18 carbon atoms and the average addition mole number of ethylene oxide is 2 to 2. 4, polyoxyethylene fatty acid amide ether sulfate anionic surfactant whose counter ion is alkali metal, alkaline earth metal or organic ammonium, acyl group having 8-20 carbon atoms, counter ion is hydrogen atom, alkali metal Is, alkaline earth metal, ammonium or organic ammonium, preferred Or an acylmethyltaurine-type anionic surfactant having an acyl group having 10 to 18 carbon atoms and a counter ion of an alkali metal or organic ammonium; an acylglutamic acid having an acyl group having 8 to 20 carbon atoms or an alkali of acylsarcosine An acylamino acid type anionic surfactant which is a metal salt, an ammonium salt or an organic ammonium salt, preferably an alkali metal salt or acyl ammonium salt of acyl glutamic acid or acyl sarcosine having an acyl group of 10 to 18 carbon atoms, acyl The group has 8 to 20 carbon atoms and the counter ion is a hydrogen atom, alkali metal, alkaline earth metal, ammonium or organic ammonium, preferably the acyl group has 10 to 18 carbon atoms and the counter ion is alkali metal or organic ammonium. Is a sulfosuccinic acid type anionic Surfactant is mentioned.
Preferred anionic surfactants include polyoxyethylene amide ether sulfate type anionic surfactants, acylmethyl taurine type anionic surfactants, acylamino acid type anionic surfactants, sulfosuccinic acid type anionic surfactants. Surfactant etc. are mentioned, More preferably, it is an acylmethyl taurine type anionic surfactant.
[0012]
(A) is 0.5 to 35% by weight, preferably 0.6 to 33% by weight.
When (a) is less than 0.5% by weight, foamability and foam stability are lowered, good foam quality and a refreshing feeling after washing cannot be obtained, and washing power is weakened. When (a) is larger than 35% by weight, the feeling of skin firmness after washing becomes strong and the feeling of refreshing after washing cannot be obtained.
[0013]
(B) is 0.4 to 25% by weight, preferably 0.5 to 23% by weight.
When (b) is less than 0.4% by weight, the foaming property and foam stability are lowered, and good foam quality and a refreshing feeling after washing cannot be obtained, resulting in weak cleaning power. If (b) is greater than 25% by weight, the irritation will be strong, good foam quality, a feeling of refreshing after washing will not be obtained, and a feeling of slimness at the time of washing and a feeling of firmness of the skin after washing will become stronger, and the cleaning power Becomes excessive, and the stability with time deteriorates.
[0014]
(A) + (b) is 3 to 50% by weight, preferably 5 to 45% by weight.
When (a) + (b) is less than 3% by weight, the foaming property and foam stability are lowered, good foam quality and a refreshing feeling after washing cannot be obtained, and the cleaning power is weakened. If (a) + (b) is greater than 50% by weight, the irritation will be strong, the feeling of slimness during washing and the feeling of skin tightness after washing will be stronger, and the feeling of refreshing after washing will not be obtained. It becomes excessive and the stability over time deteriorates.
[0015]
As for the weight ratio of (a) and (b), (a) / (b) is 20/1 to 1/8, preferably 15/1 to 1/6. When (a) / (b) is larger than 20/1, the feeling of skin firmness after washing becomes strong, and the feeling of refreshing after washing cannot be obtained. When (a) / (b) is less than 1/8, the irritation becomes strong, the foam stability is lowered, the good foam quality and the refreshing feeling after washing cannot be obtained, the slimy feeling during washing and after washing The feeling of tightness of the skin becomes strong, the cleaning power becomes excessive, and the stability with time deteriorates.
[0016]
The detergent composition of the present invention is a component generally blended as desired, for example, higher alcohols such as cetanol and stearyl alcohol, polyhydric alcohols such as glycerin, ethylene glycol, propylene glycol and 1,3-butanediol, squalane, Oils such as jojoba oil, olive oil, castor oil, lanolin, lecithin, cellulose ether type cationic polymer compound, cationic polyvinyl pyrrolidone derivative, cationic polyacrylic acid derivative, cationic polyamide derivative, polydimethyl chloride Diallylammonium, dimethyldiallylammonium chloride and acrylic amide copolymer, cationic polymer such as alkylpolyethyleneimine, highly polymerized methylpolysiloxane, dimethylsiloxane methyl (polyoxyethylene) siloxane Silicone derivatives such as polymers, pearlizing agents such as ethylene glycol distearate, styrene polymers, etc., preservatives such as paraoxybenzoic acid ester, sodium benzoate, phenoxyethanol, 5-methyl-2-isopropylcyclohexanol, red pepper tincture, etc. Tonic agents, chelating agents such as ethylenediaminetetraacetate, citric acid, nitrilotriacetic acid trisodium, ultraviolet absorbers such as benzophenone derivatives and benzotriazole derivatives, dyes and fragrances can be included to such an extent that the effects of the present invention are not impaired.
[0017]
【The invention's effect】
The cleaning composition of the present invention has low irritation, excellent foaming and foam stability, good foam quality, excellent feeling after washing, suitable cleaning power, and stability over time. Can be used for hair shampoo compositions, body shampoo compositions, hand soap compositions, facial cleansing compositions, dishwashing detergent compositions, and the like.
[0018]
【Example】
The present invention will be specifically described with reference to examples. The test methods and evaluation methods performed in the examples are described below.
(1) The skin irritation protein denaturation rate was evaluated. That is, the height of an absorption peak at 220 nm of a sample prepared to have a sample concentration of 1% was measured by aqueous high-performance liquid chromatography using a pH 7 buffer solution having an ovalbumin concentration of 0.025% by weight. The protein denaturation rate was determined by the formula.
Protein denaturation rate (%) = [(HO−HS) / HO] × 100
HO: Absorption peak height when no sample was added HS; Absorption peak height when the sample was added The protein denaturation rate was evaluated in the following three stages.
Skin irritation is weak. (Protein denaturation rate less than 30%)
Moderate skin irritation. (Protein denaturation rate 30% or more and less than 60%)
Strong skin irritation. (Protein denaturation rate of 60% or more)
[0019]
(2) The foam height was measured immediately after the sample was added and after 5 minutes at 40 ° C. by an Ross Miles method using an aqueous solution prepared so that the foamable detergent composition had an effective content of 1% by weight. A foam having a foam height of 150 mm or more immediately after the sample is put into a composition having a good foaming property, and a foam having a foam persistence of 90% or more obtained from the following formula is a composition having a good foam persistence: evaluated.
Bubble persistence (%) = [(bubble height after 5 minutes) / (bubble height immediately after sample introduction)] × 100
(3) Foam quality 20 women were panelists, and the foam quality when fingers were washed with 5 g of the detergent composition was evaluated. The total value of 20 people is calculated with 2 points when the foam feels fine and well stretched, 1 point when the foam feels slightly rough, and 0 points when the foam feels rough and fragile. Rated by stage.
Good foam quality. (Total value of 30 points or more)
The foam quality is slightly bad. (Total value 20 points or more and less than 30 points)
The foam quality is poor. (Total value less than 20 points)
[0020]
(4) Detergency Using an aqueous solution prepared with an effective amount of 1% by weight of the detergent composition, an artificially contaminated cloth of wool muslin at 40 ° C., 70 rpm, 10 minutes with a Terg-O-meter Wash under conditions. After the contaminated fabric was dried, the surface reflectance was measured with a color computer, the cleaning power was calculated from the following formula, and evaluated in the following three stages.
Detergency (%) = (A / B) × 100
A: (Reflectivity of contaminated cloth after washing) − (Reflectance of contaminated cloth before washing)
B: (Wool muslin reflectance)-(Contaminated cloth reflectance before washing)
Excessive cleaning power. (Detergency 60% or more)
Good detergency. (Detergency: 25% to less than 60%)
Detergency is weak. (Detergency less than 25%)
(5) Slimy feeling at the time of washing 20 women were panelists, and the slimy feeling when the fingers were washed with 5 g of the cleaning composition was evaluated. Find the total value of 20 people, 2 points when you do not feel slimy, 1 point when you feel slightly slimy, and 0 points when you feel that the feeling of slimness is persistent and it takes time to rinse Evaluation was made in the following three stages.
There is no slimy feeling. (Total value of 30 points or more)
Somewhat slimy. (Total value 20 points or more and less than 30 points)
Strong feeling of sliminess. (Total value less than 20 points)
[0021]
(6) Tightness of skin after washing 20 female panelists were used to evaluate the feeling of skin tightness after washing fingers with 5 g of the detergent composition. A total of 20 people were scored with 2 points when they felt that their skin was not at all, 1 point when they felt that they were slightly stuck, and 0 points when they felt that they were very tight. .
There is no feeling. (Total value of 30 points or more)
There is a sense of tension. (Average 20 or more and less than 30)
There is a strong feeling. (Average value less than 20 points)
(7) Refreshing feeling after washing 20 women were panelists, and the refreshing feeling after washing fingers with 5 g of the cleaning composition was evaluated. 2 points when feeling very refreshed, 1 point when feeling not very refreshed, and 0 points when feeling not very refreshed, and evaluates in the following three levels. did.
A sufficient refreshing feeling can be obtained. (Total value of 30 points or more)
A refreshing feeling cannot be obtained. (Total value 20 points or more and less than 30 points)
A refreshing feeling cannot be obtained. (Total value less than 20 points)
[0022]
(8) Stability over time The cleaning composition was stored at −5 ° C. for 12 hours and then stored at 45 ° C. for 12 hours, and this was repeated every day for one month. The appearance of the cleaning composition was observed and evaluated in the following two stages.
◯: Good stability. (No change in appearance for one month)
X: Stability failure. (Separation or precipitation is observed or solidifies within one month)
Reference Examples 1 to 10, Examples 11 to 15, Reference Example 16, Example 17-19, Reference Examples 20-25 and Comparative Examples 1-2 5
The cleaning composition shown to Tables 1-10 was produced, and said evaluation was performed. The results are shown in Tables 1-10.
[0023]
Abbreviations in the table are as shown below.
Surfactant 1: R ^{1 in} formula (1) is a dodecyl group, M ¹ is a hydrogen atom, and M ² is sodium.
Surfactant 2: R ^{1 in} formula (1) is a tetradecyl group, M ¹ is a hydrogen atom, and M ² is potassium.
Surfactant 3: R ^{1 in} formula (1) is a dodecyl group, M ¹ is a hydrogen atom, and M ² is triethanolamine.
Surfactant 4: R ^{1 in} formula (1) is a hexadecyl group, M ¹ is a hydrogen atom, and M ² is sodium.
R ² CONR ³ (CH ₂ CH ₂ O) nSO ₃ M ³ (2)
Anionic surfactant 1: R ² CO in formula (2) is a coconut oil acyl group, R ³ is a hydrogen atom, n is 4, and M ³ is sodium.
Anionic surfactant 2: R ² CO in formula (2) is a myristoyl group, R ³ is a hydrogen atom, n is 4, and M ³ is 1/2 magnesium.
Anionic surfactant 3: R ² CO in formula (2) is a lauroyl group, R ³ is a methyl group, n is 3, and M ³ is sodium.
[0024]
[Chemical 3]
[0025]
Anionic surfactant 4: R ⁴ CO in formula (3) is a lauroyl group, R ⁵ is a methyl group, and M ⁴ is sodium.
Anionic surfactant 5: R ⁴ CO in formula (3) is a coconut oil acyl group, R ⁵ is a methyl group, and M ⁴ is sodium.
Anionic surfactant 6: R ⁴ CO in the formula (3) is a coconut oil acyl group, R ⁵ is a methyl group, and M ⁴ is 1/2 magnesium.
Anionic surfactant 7: R ⁴ CO in formula (3) is a lauroyl group, R ⁵ is a hydrogen atom, and M ⁴ is potassium.
Anionic surfactant 8: In (3), R ⁴ CO is a coconut oil acyl group, R ⁵ is a methyl group, and M ⁴ is taurine sodium.
Anionic surfactant 9: R ² CO in the formula (2) is a coconut oil acyl group, R ³ is hydrogen, n is 4, and M ³ is sodium.
Anionic surfactant 10: R ⁴ CO in formula (3) is a lauroyl group, R ⁵ is a methyl group, and M ⁴ is sodium.
[0026]
[Table 1]
[0027]
[Table 2]
[0028]
[Table 3]
[0029]
[Table 4]
[0030]
From Tables 1 to 4, the detergent compositions of Reference Examples 1 to 10 of the present invention are hypoallergenic, excellent in foaming properties, excellent feeling after washing, have an appropriate detergency, and are stable over time. It can be seen that this is a good cleaning composition.
Since the cleaning composition of Comparative Example 1 (a) is less than 0.5% by weight, the foaming property and foam stability are low, good foam quality and a refreshing feeling after washing cannot be obtained, and the cleaning power Is weak.
Since the cleaning composition of Comparative Example 2 (a) + (b) exceeds 50% by weight, the irritation becomes strong, and the feeling of slimming during washing and the feeling of tightness of the skin after washing become stronger, and washing is performed. The subsequent refreshing feeling cannot be obtained, the cleaning power becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is smaller than 1/8, the cleaning composition of Comparative Example 3 has strong irritation, low foam stability, good foam quality and refreshing feeling after washing. Cannot be obtained, and the feeling of slimming during washing and the feeling of firmness of the skin after washing become strong, the detergency becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is larger than 20/1 in the cleaning composition of Comparative Example 4, the feeling of firmness of the skin after washing becomes strong, and the feeling of refreshing after washing cannot be obtained.
Since the cleaning composition of Comparative Example 5 (a) + (b) is less than 3% by weight, foaming properties and foam stability are low, and good foam quality and a refreshing feeling after washing cannot be obtained. Detergency is weak.
Since the cleaning composition of Comparative Example 6 (b) exceeds 25% by weight, the irritation becomes strong, the slimy feeling at the time of cleaning and the tightness of the skin after the cleaning become strong, and the good foam quality and A refreshing feeling after cleaning cannot be obtained, the cleaning power becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is smaller than 1/8, the cleaning composition of Comparative Example 7 has high irritation, low foam stability, good foam quality and a refreshing feeling after washing. Cannot be obtained, and the feeling of slimming during washing and the feeling of firmness of the skin after washing become strong, the detergency becomes excessive, and the stability over time is poor.
Since the cleaning composition of Comparative Example 8 (a) exceeds 35% by weight, a refreshing feeling after cleaning cannot be obtained, and the feeling of firmness of the skin after cleaning becomes strong.
Since the cleaning composition of Comparative Example 9 has (b) of less than 0.4% by weight, foaming properties and foam stability are low, good foam quality and a refreshing feeling after washing cannot be obtained, and cleaning power Is weak.
[0031]
[Table 5]
[0032]
[Table 6]
[0033]
[Table 7]
[0034]
From Tables 5 to 7, the cleaning compositions of Examples 11 to 15, Reference Example 16 and Examples 17 to 19 of the present invention are mild, excellent in foaming properties, and excellent in use feeling after washing. It can be seen that this is a detergent composition having a detergency and good stability over time.
Since the cleaning composition of Comparative Example 10 (a) + (b) is less than 3% by weight, foaming properties and foam stability are lowered, and good foam quality and a refreshing feeling after washing cannot be obtained. Detergency is weak.
Since the cleaning composition of Comparative Example 11 (a) + (b) exceeds 50% by weight, the irritation is strong, the feeling of sliminess during washing is strong, and the feeling of tightness of the skin after washing becomes strong. A refreshing feeling after cleaning cannot be obtained, the cleaning power becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is smaller than 1/8, the cleaning composition of Comparative Example 12 has high irritation, low foam stability, good foam quality and a refreshing feeling after washing. Cannot be obtained, the feeling of slimness during washing and the feeling of skin firmness after washing become strong, the cleaning power becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is larger than 20/1 in the cleaning composition of Comparative Example 13, the skin feeling after washing becomes strong, and the feeling of refreshing after washing cannot be obtained.
Since the cleaning composition of Comparative Example 14 (a) + (b) is less than 3% by weight, the foaming property and foam stability are low, and good foam quality and a refreshing feeling after washing cannot be obtained. Detergency is weak.
Since the cleaning composition of Comparative Example 15 (a) + (b) exceeds 50% by weight, the irritation becomes stronger, and the feeling of slimness during washing and the feeling of tightness of the skin after washing become stronger. The subsequent refreshing feeling cannot be obtained, the cleaning power becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is less than 1/8, the cleaning composition of Comparative Example 16 has strong irritation, low foam stability, good foam quality and a refreshing feeling after washing. Cannot be obtained, and the feeling of slimming during washing and the feeling of firmness of the skin after washing become strong, the detergency becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is larger than 20/1 in the cleaning composition of Comparative Example 17, the skin feeling after washing becomes strong and the feeling of refreshing after washing cannot be obtained.
[0035]
[Table 8]
[0036]
[Table 9]
[0037]
[Table 10]
[0038]
From Tables 8 to 10, the detergent compositions of Reference Examples 20 to 25 of the present invention are hypoallergenic, excellent in foaming properties, excellent feeling after washing, have an appropriate detergency, and are stable over time. It can be seen that this is a good cleaning composition.
Since the cleaning composition of Comparative Example 18 has (a) + (b) of less than 3% by weight, foaming properties and foam stability are low, and good foam quality and a refreshing feeling after washing cannot be obtained. Detergency is weak.
Since the cleaning composition of Comparative Example 19 has (a) + (b) of more than 50% by weight, the irritation becomes strong, and the feeling of slimness during washing and the feeling of tightness of the skin after washing become stronger. The subsequent refreshing feeling cannot be obtained, the cleaning power becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is smaller than 1/8, the cleaning composition of Comparative Example 20 has strong irritation, low foam stability, good foam quality and refreshing feeling after washing. Cannot be obtained, the feeling of slimness during washing and the feeling of firmness of the skin after washing become strong, the cleaning power becomes excessive, and the stability over time is poor.
Since the weight ratio of (a) / (b) is larger than 20/1 in the cleaning composition of Comparative Example 21, it is not possible to obtain a feeling of firmness after washing and a feeling of refreshing after washing.
Since the weight ratio of (a) / (b) is smaller than 1/8, the cleaning composition of Comparative Example 22 has strong irritation, low foam stability, and no good foam quality, and cleaning. The feeling of sliminess at the time and the feeling of firmness of the skin after washing become strong, the feeling of freshness after washing cannot be obtained, the cleaning power becomes excessive, and the stability over time is poor.
Since the detergent composition of Comparative Example 23 is a combination of an anionic surfactant and a conventional amphoteric surfactant, the irritation becomes strong, the foaming property becomes low, and a good foam quality cannot be obtained. The slimy feeling of the skin and the firmness of the skin after washing become strong, and the refreshing feeling after washing cannot be obtained.
Since the detergent composition of Comparative Example 24 is a combination of an anionic surfactant and a conventional amphoteric surfactant, the irritation becomes strong, the foaming property becomes low, and good foam quality cannot be obtained. The slimy feeling of the skin and the firmness of the skin after washing become strong, and the refreshing feeling after washing cannot be obtained.
Since the detergent composition of Comparative Example 25 is a combination of an anionic surfactant, a conventional amphoteric surfactant and a nonionic surfactant, the irritation becomes stronger, the foam stability is lowered, and the foam quality is good. Cannot be obtained, and a feeling of slimness during washing and a feeling of firmness of the skin after washing become strong, and a feeling of refreshing after washing cannot be obtained.

Claims

The following (a) and (b) are contained, (a) is 0.5 to 35% by weight, (b) is 0.4 to 25% by weight, and (a) + (b) is 3 A cleaning composition, wherein the weight ratio of (a) and (b) is 20/1 to 1/8.
(A) Alkyliminobis (β-hydroxypropanesulfonic acid) salt represented by formula (1)
(Wherein R ¹ represents a linear or branched alkyl group or alkenyl group having 8 to 22 carbon atoms, and M ¹ and M ² represent a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or organic ammonium.)
(B) Acylmethyl taurine type anionic surfactant