JP3786041B2 - Cleansing fee - Google Patents

Description

（式中、Ｒ¹は水素原子またはメチル基、Ｒ²、Ｒ³およびＲ⁴は炭素数１〜８のアルキル基、ｎは２〜４の整数である。）
を０．０００１〜１重量％含有することを特徴とする前記（１）または（２）のクレンジング料である。
【０００８】
【発明の実施の形態】
本発明に用いるａ成分は、２５℃で液状の炭化水素油である。
炭化水素油とは炭素数が１０以上の炭化水素化合物であり、直鎖、分岐または環状の構造であっても、飽和または不飽和結合を有していても良く、石油や植物精油の構成成分のテルペン類として天然に存在するもののほか、人工的に合成したものも使用可能である。例えばデカン、ウンデカン、ドデカン、トリデカン、テトラデカン、ペンタデカン、デセンなどの正パラフィンや炭素鎖に分岐を有するイソパラフィン、スクワランやスクワレン等が挙げられ、使用時ののび、汚れとのなじみ易さ、洗浄性、使用後の感触および保存安定性の点から、正パラフィン、イソパラフィン、スクワランのうち２５℃での粘度が１００ｍＰａ・ｓ以下の化合物の使用が好ましい。
【０００９】
本発明に用いるｂ成分は２５℃で液状のエステル油である。
エステル油とは、カルボン酸と１〜３価のアルコールとの脱水反応やエステル交換反応等によって得られる構造を持つカルボン酸エステル化合物であり、具体的には、セバシン酸ジエチル、２−エチルヘキサン酸セチル、２−エチルヘキサン酸イソセチル、パルミチン酸イソプロピル、パルミチン酸２−エチルヘキシル、イソステアリン酸イソプロピル、イソステアリン酸２−ヘキシルデシル、イソステアリン酸イソステアリル、トリイソステアリン酸トリメチルプロパン、ミリスチン酸オクチルドデシル、ミリスチン酸イソプロピル、ミリスチン酸イソステアリル、ミリスチン酸イソセチル、ラウリン酸ヘキシル、オレイン酸エチル、ピバリン酸イソステアリル、イソステアリン酸イソプロピル、イソノナン酸イソノニル、イソノナン酸２−エチルヘキシル、イソノナン酸イソデシル、オレイン酸エチル、イソノナン酸イソトリデシル、ジデカン酸ネオペンチルグリコール、トリ２−エチルヘキサン酸グリセリル、トリヘキサン酸グリセリル等の合成エステル油や、ホホバ油、ひまわり油、オリーブ油、マカデミアナッツ油、茶実油、綿実油、シソ油、サフラワー油、キョウニン油等の天然油脂由来のエステル油が挙げられる。汚れとのなじみ易さ、洗浄性および使用後の感触の点で、好ましくはセバシン酸ジエチル、２−エチルヘキサン酸セチル、２−エチルヘキサン酸イソセチル、パルミチン酸イソプロピル、パルミチン酸２−エチルヘキシル、オレイン酸エチル、イソノナン酸イソノニル、イソノナン酸２−エチルヘキシル、イソノナン酸イソデシル、トリ２−エチルヘキサン酸グリセリル、ホホバ油、ひまわり油、オリーブ油、マカデミアナッツ油、茶実油、綿実油、シソ油、サフラワー油、キョウニン油である。
【００１０】
本発明の組成物において、ａ、ｂ成分の含有量合計ａ＋ｂは２０〜７５重量％、好ましくは３０〜７０重量％、さらに好ましくは４０〜６５重量％である。２０重量％を下回る場合は、油性汚れとのなじみ性や洗浄性が悪くなり、７５重量％を超える場合は、すすぎ性や使用後の感触が悪くなるばかりでなく、製品の保存安定性も悪くなる。
また、ａ成分とｂ成分の重量比ａ／ｂは１／１〜１０／１であり、好ましくは１／１〜８／１、さらに好ましくは３／２〜５／１である。１／１を下回る場合は保存安定性が悪くなり、１０／１を超える場合は油性汚れとのなじみ性や洗浄性が悪くなる。
【００１１】
本発明に用いるｃ成分のポリオキシエチレングリセリン脂肪酸エステル型非イオン性界面活性剤は、グリセリンと脂肪酸をエステル化反応させた後、エチレンオキシドを付加して得られる化合物であり、ポリオキシエチレングリセリンモノ脂肪酸エステル、ポリオキシエチレングリセリンジ脂肪酸エステルが挙げられ、ｃ成分として単独で、あるいは２種以上を組み合わせて使用することができる。
【００１２】
本発明に用いるｃ成分を構成する脂肪酸は、炭素数が８〜２４の飽和あるいは不飽和脂肪酸であり、例えばラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、オレイン酸などの単一脂肪酸、ヤシ油脂肪酸、牛脂脂肪酸等の動植物油由来の混合脂肪酸などを用いることができる。好ましい脂肪酸の炭素数としては１０〜１８である。脂肪酸の炭素数が８を下回る場合は、親油性が低くなるため油性汚れとのなじみが悪くなり洗浄性が低下することがあるばかりでなく、刺激性のある匂いが生じることがある。また脂肪酸の炭素数が２４を超える場合は、親水性が低くなるため水との相溶性が悪くなり、さっぱりとした洗い上がりになりにくい。
【００１３】
グリセリン１モルに対するエチレンオキシドの平均付加モル数は５〜１００であることが好ましく、さらに好ましくは５〜８０、最適には７〜５０である。エチレンオキシドの平均付加モル数が５を下回る場合は、親水性が低くなるため水との相溶性が悪くなりさっぱりとした洗い上がりになりにくい。また１００を超える場合は、親油性が低くなるため油性汚れとのなじみが悪くなり、洗浄性が低下することがある。
また、本発明に用いるｃ成分のＨＬＢ値は１０〜２０であることが好ましく、さらに好ましくは１０〜１８、最適には１１〜１６である。ＨＬＢ値が１０を下回る場合は、親水性が低くなるため水との相溶性が悪くなりさっぱりとした洗い上がりになりにくい。また２０を超える場合は、保存安定性が悪くなるばかりでなく、親油性が低くなるため油性汚れとのなじみが悪くなり、洗浄性が低下することがある。ここで言うＨＬＢ値はＧｒｉｆｆｉｎ（Ｗ．Ｃ．Ｇｒｉｆｆｉｎ：Ｊ．Ｓｏｃ．Ｃｏｓｍｅｔｉｃ Ｃｈｅｍｉｓｔｓ，３３，１１８０（１９６０））のＨＬＢの概念によって定めるものである。
【００１４】
ｃ成分としては具体的には、ポリオキシエチレン（７モル）グリセリンヤシ油脂肪酸エステル（ＨＬＢ値＝１３．０）、ポリオキシエチレン（１２モル）グリセリンラウリン酸エステル（ＨＬＢ値＝１５．０）、ポリオキシエチレン（２０モル）グリセリンオレイン酸エステル（ＨＬＢ値＝１５．４）、ポリオキシエチレン（３０モル）グリセリンヤシ油脂肪酸エステル（ＨＬＢ値＝１７．４）等が挙げられる。
【００１５】
本発明に用いるｄ成分であるソルビタン脂肪酸エステル型非イオン性界面活性剤は、ソルビタンと脂肪酸をエステル反応させて得られる化合物であり、ソルビタンモノ脂肪酸エステル、ソルビタンジ脂肪酸エステル、ソルビタントリ脂肪酸エステル、ソルビタンテトラ脂肪酸エステルが挙げられる。本発明では、これらの化合物をｄ成分として単独で、あるいは２種以上を組み合せて用いることができる。
【００１６】
本発明に用いるｄ成分を構成する脂肪酸は、炭素数が８〜２４の飽和あるいは不飽和脂肪酸であり、ｃ成分を構成する脂肪酸が挙げられる。好ましい脂肪酸の炭素数としては１０〜２０である。脂肪酸の炭素数が８を下回る場合は、親油性が低くなるため油性汚れとのなじみが悪くなり洗浄性が低下することがあるばかりでなく、刺激性のある匂いが生じることがある。また脂肪酸の炭素数が２４を超える場合は、親水性が低くなるため水との相溶性が悪くなり、さっぱりとした洗い上がりになりにくい。
【００１７】
ｄ成分としては具体的には、ソルビタンモノステアリン酸エステル、ソルビタンモノオレイン酸エステル、ソルビタンセスキオレイン酸エステル、ソルビタントリオレイン酸エステル等が挙げられる。
【００１８】
本発明の組成物において、ｃ、ｄ成分の含有量合計ｃ＋ｄは２０〜６０重量％、好ましくは２５〜５０重量％、さらに好ましくは３０〜４０重量％である。２０重量％を下回る場合は、洗浄性と保存安定性が悪くなり、６０重量％を超える場合は使用時ののびが悪くなる。
また、ｃ成分とｄ成分の重量比ｃ／ｄは１／１〜４／１、好ましくは３／２〜７／２、さらに好ましくは２／１〜３／１である。１／１を下回る場合は、すすぎ性が悪くなるばかりでなく、使用後の感触や保存安定性も悪くなり、４／１を超える場合は保存安定性が悪くなる。
【００１９】
本発明の組成物においてａ、ｂ、ｃおよびｄ成分の含有量合計ａ＋ｂ＋ｃ＋ｄは６０〜９８重量％であり、好ましくは７０〜９７重量％以上、さらに好ましくは８０〜９５重量％以上である。６０重量％を下回る場合は、汚れとのなじみや洗浄性が悪くなり、９８重量％を超える場合は使用後の感触が悪くなる場合がある。
【００２０】
本発明においては、使用時ののび、油性汚れとのなじみ性、洗浄性をさらに向上する目的でｅ成分を加えることが好ましい。
本発明に用いるｅ成分は２５℃で液状の環状シリコーン油である。
ここで環状シリコーン油とは、環状ポリシロキサン化合物であり、例えば１個のケイ素原子に２個のメチル基が結合したジメチルシクロシロキサンが挙げられる。本発明で用いるｅ成分はこれに限定されるものではなく、２５℃で液状の環状ポリシロキサン化合物であれば良い。ジメチルシクロシロキサンの場合、シロキサンの重合度が４以上の化合物が２５℃で液状であり、このような化合物として、例えばオクタメチルシクロテトラシロキサン、デカメチルシクロペンタシロキサン、ドデカメチルシクロヘキサシロキサン、テトラデカメチルシクロヘプタシロキサンなどが挙げられるが、汚れとのなじみ易さ、洗浄性、使用後の感触の点からオクタメチルシクロテトラシロキサン、デカメチルシクロペンタシロキサンの使用が好ましい。鎖状シリコーン油では、汚れとのなじみ性、洗浄性および使用後の感触が悪い。
【００２１】
本発明の組成物において、ｅ成分の添加量は１〜１５重量％、好ましくは２〜１２重量％、さらに好ましくは５〜１０重量％である。１重量％を下回る場合は、油性汚れとのなじみ性、洗浄性、使用後の感触が十分に向上せず、１５重量％を超える場合は製品の保存安定性が悪くなる場合がある。
また、ｅ成分を添加する場合、本発明の油性成分であるａ、ｂ成分とｅ成分の合計含有量は２１〜８０重量％であることが好ましく、さらに好ましくは３０〜７５重量％である。８０重量％を超える場合は、保存安定性が悪くなる場合がある。
【００２２】
本発明においては、安全性と保存安定性を改善する目的で、さらにｆ成分を添加することが好ましい。
本発明に用いるｆ成分のポリマーは式（１）で示され、２−（メタ）アクリロイルオキシエチルホスホリルコリン（以下、ＰＣと記す）のホモポリマー、またはＰＣと（メタ）アクリル酸アルキルエステルを共重合させたポリマーであり、その重量比は１００／０〜１０／９０、好ましくは１００／０〜３０／７０、さらに好ましくは９５／５〜５０／５０である。該ポリマー中のＰＣに基づく構成単位と（メタ）アクリル酸アルキルエステルに基づく構成単位の合計量は合わせて６０〜１００重量％であり、好ましくは７０〜１００重量％、さらに好ましくは８０〜１００重量％である。また、該ポリマーの分子量は１０,０００〜１０,０００,０００が好ましく、さらに好ましくは５０,０００〜５,０００,０００である。
【００２３】
本発明に用いられるｆ成分のポリマーには、ＰＣおよび（メタ）アクリル酸アルキルエステルと共重合性を有する他の単量体との共重合体も、本発明の効果を損なわない範囲で含有することができる。
ＰＣおよび（メタ）アクリル酸アルキルエステルと共重合性を有する他の単量体は、付加重合可能な二重結合を有する化合物であり、例えばエチレン、プロピレン、ブテン、イソブテン、スチレン等のオレフィン性炭化水素およびそれらの異性化オレフィン、多量化オレフィン、またはこれらに各種誘導体を導入したオレフィン性化合物；アクリル酸、メタクリル酸、ビニル酢酸、イタコン酸、クロトン酸、マレイン酸、フマル酸等のエチレン性不飽和カルボン酸およびそれらの多量体、無水物、炭素数１〜６の多価アルコールとのエステル、またはこれらにカルボニル基、アミノ基、シアノ基、ニトリル基などを導入したエチレン性不飽和カルボン酸誘導体；ビニルアルコールおよびこれと各種カルボン酸とのエステル、各種アルコールとのエーテル、またはこれらにカルボニル基、アミノ基、シアノ基、ニトリル基などを導入したエチレン性不飽和カルボン酸誘導体、ビニルアルコールおよびこれらと各種カルボン酸とのエステル、各種アルコールとのエーテル、またはこれらにカルボニル基、アミノ基、シアノ基、ニトリル基などを導入したビニルアルコール誘導体などが挙げられる
【００２４】
単量体ＰＣにおいて、Ｒ¹は水素原子またはメチル基であり、Ｒ²、Ｒ³およびＲ⁴は炭素数１〜８のアルキル基であり、ｎは２〜４の整数である。好ましくはＲ¹、Ｒ²、Ｒ³およびＲ⁴がメチル基、ｎが２である２−メタクリロイルオキシエチルホスホリルコリン（以下、ＭＰＣと記す）である。
また、単量体の（メタ）アクリル酸アルキルエステルを構成するアルコールは炭素数１〜６のアルコールであり、好ましくは炭素数２〜５のアルコール、さらに好ましくは炭素数３〜４のアルコールである。なお、（メタ）アクリルはメタクリルまたはアクリルを示す。
【００２５】
本発明の組成物において、ｆ成分の添加量は０.０００１〜１重量％、好ましくは０．００１〜０．５重量％、さらに好ましくは０．０１〜０．１重量％である。０.０００１重量％を下回る場合は、安全性と保存安定性の改善効果が不十分であり、１重量％を超える場合は使用時ののびが悪くなるだけでなく、コスト的にも不利であり好ましくない。
【００２６】
なお、本発明のクレンジング料には、前記の成分以外に必要に応じて一般に化粧料に用いられる成分、例えば低級アルコール、油性基剤、保湿剤、水溶性高分子、シリコーン誘導体、非イオン性界面活性剤、陰イオン性界面活性剤、両性界面活性剤、半極性界面活性剤、陽イオン性界面活性剤、無機または有機粉末、無機または有機顔料、色素、無機または有機塩、ｐＨ調製剤、殺菌剤、キレート剤、抗酸化剤、紫外線吸収剤、抗炎症剤、天然エキス、精油、香料等を含有することが可能である。
【００２７】
【実施例】
次に実施例によって本発明をさらに詳細に説明する。
実施例１〜７及び比較例１〜１０
表１〜表３に示すクレンジング料を調製し、下記の方法により評価を行なった。結果を表１〜表３に示す。表中の含有量は有効分重量％を示す。
【００２８】
<ａ成分>
以下に示す３種類の炭化水素油を用いた。これらはいずれも２５℃で液状である。
<ａ−１成分>
イソパラフィン：日本油脂（株）製「パールリーム ４」
<ａ−２成分>
イソパラフィン：日本油脂（株）製「パールリーム ＥＸ」
<ａ−３成分>
スクワラン：ソフィム社製「フィトスクワラン」
【００２９】
<ｂ成分>
以下に示す７種類のエステル油を用いた。これらはいずれも２５℃で液状である。
<ｂ−１成分>
ホホバ油：香栄興業（株）製「精製ホホバ油」
<ｂ−２成分>
オレイン酸エチル：日本油脂（株）製「ＮＯＦＡＢＬＥ ＥＯ−８５Ｓ」
<ｂ−３成分>
２−エチルヘキサン酸セチル：高級アルコール工業（株）製「ＣＥＨ」
<ｂ−４成分>
イソノナン酸イソデシル：高級アルコール工業（株）製「ＫＡＫ−１０９」
<ｂ−５成分>
トリ−２エチルヘキサン酸グリセリル：日本油脂（株）製「パナセート ８００Ｂ」
<ｂ−６成分>
ヒマワリ油：日本油脂（株）製「精製ヒマワリ油８５」
<ｂ−７成分>
オリーブ油：日本油脂（株）製「精製オリ−ブ油」
【００３０】
<ｃ成分>
以下に示す３種類のポリオキシエチレングリセリン脂肪酸エステル型非イオン性界面活性剤を用いた。
<ｃ−１成分>
ポリオキシエチレン（７モル）グリセリンヤシ油脂肪酸エステル：コグニスジャパン（株）製「ＣＥＴＩＯＬ ＨＥ」、ＨＬＢ値＝１３．０
<ｃ−２成分>
ポリオキシエチレン（２０モル）グリセリンオレイン酸エステル：日本油脂（株）製「ユニグリ ＭＯ−２２０」、ＨＬＢ値＝１５．４
<ｃ−３成分>
ポリオキシエチレン（１２モル）グリセリンラウリン酸エステル：日本油脂（株）製「ユニグリ ＭＬ−２１２」、ＨＬＢ値＝１５．０
【００３１】
<ｄ成分>
以下に示す３種類のソルビタン脂肪酸エステル型非イオン性界面活性剤を用いた。
<ｄ−１成分>
ソルビタンモノステアリン酸エステル：日本油脂（株）製「ノニオン ＳＰ−６０ＲＰ」
<ｄ−２成分>
ソルビタンモノオレイン酸エステル：日本油脂（株）製「ＮＯＦＡＢＬＥ ＳＯ−８５１Ｓ」
<ｄ−３成分>
ソルビタンセスキオレイン酸エステル：日本油脂（株）製「ＮＯＦＡＢＬＥ ＳＯ−８５２Ｓ」
【００３２】
<ｅ成分>
以下に示す２種類の環状シリコーン油を用いた。これらはいずれも２５℃で液状である。
<ｅ−１成分>
デカメチルシクロペンタシロキサン：信越化学工業（株）製「シリコーン ＫＦ−９９５」
<ｅ−２成分>
オクタメチルシクロテトラシロキサン：信越化学工業（株）製「シリコーン ＫＦ−９９４」
【００３３】
<ｆ成分>
以下に示す２種類のポリマーを用いた。
<ｆ−１成分>
ＭＰＣ ９０重量％とメタクリル酸ブチル １０重量％の各構成単位からなる平均分子量６０万のコポリマーの５％水溶液：日本油脂（株）製「Ｌｉｐｉｄｕｒｅ−ＰＭＢ」
<ｆ−２成分>
ＭＰＣ １００重量％の構成単位からなる平均分子量８万のポリマーの４０％水溶液：日本油脂（株）製「Ｌｉｐｉｄｕｒｅ−ＨＭ」
【００３４】
<その他成分>
<その他−１>
ポリオキシエチレン（２０モル）ソルビタンモノオレイン酸エステル：日本油脂（株）製「ＮＯＦＡＢＬＥ ＥＳＯ−８５２０」
【００３５】
表１〜表３中の特性の評価は下記の方法で行った。
（１）使用時ののび
メイクをした２０名の女性（２１才〜３５才）をパネラーとし、クレンジング料を使用した時ののびについて下記のように判定し、２０名の合計値が３０点以上を使用時ののびの良好なクレンジング料であると評価した。
２点：使用時ののびが良く、軽い感触であると感じた場合。
１点：使用時ののびがやや悪く、やや重い感触であると感じた場合。
０点：使用時ののびが悪く、重い感触であると感じた場合。
【００３６】
（２）汚れとのなじみ性
メイクをした２０名の女性（２１才〜３５才）をパネラーとし、クレンジング料を使用した時の汚れとのなじみ性について下記のように判定し、２０名の合計値が３０点以上を汚れとのなじみ性が良好なクレンジング料であると評価した。
２点：塗布後速やかにメイク汚れとなじんだと感じた場合。
１点：ややメイク汚れとのなじみが悪いと感じた場合。
０点：明らかにメイク汚れとのなじみが悪いと感じた場合。
【００３７】
（３）洗浄性
メイクをした２０名の女性（２１才〜３５才）をパネラーとし、クレンジング料を使用した時の洗浄性（汚れ落ち）について下記のように判定し、２０名の合計値が３０点以上を洗浄性が良好なクレンジング料であると評価した。
２点：十分メイク汚れが落ちたと感じた場合。
１点：ややメイク汚れの落ちが悪いと感じた場合。
０点：明らかにメイク汚れの落ちが悪いと感じた場合。
【００３８】
（４）すすぎ性
メイクをした２０名の女性（２１才〜３５才）をパネラーとし、クレンジング料を使用し、ぬるま湯で洗い流した時のすすぎ性について下記のように判定し、２０名の合計値が３０点以上をすすぎ性が良好なクレンジング料であると評価した。
２点：すすぎ時のぬめりもなく、速やかにすすぎができたと感じた場合。
１点：すすぎ時にややぬめりが残り、ややすすぎ性が悪いと感じた場合。
０点：ぬめりが落ち難く、明らかにすすぎ性が悪いと感じた場合。
【００３９】
（５）使用後の感触
メイクをした２０名の女性（２１才〜３５才）をパネラーとし、クレンジング料を使用した後の感触について下記のように判定し、２０名の合計値が３０点以上を使用後の感触が良好なクレンジング料であると評価した。
２点：べたつきも無く、すべすべの肌になったと感じた場合。
１点：ややべたつきがある、もしくはやや肌がかさかさすると感じた場合。
０点：べたつきが多い、もしくは肌がかさかさになったと感じた場合。
【００４０】
（６）口紅に対する溶解性Ａ
口紅約０．０３ｇを１００ｍｌビーカー底面に塗布した後、クレンジング料を１０ｇ加え、スターラーにより６０回転／分の速度で攪拌して口紅に対する溶解性について下記のように評価し、１分以内に完全に溶解した場合（◎、○）を、口紅に対する溶解性Ａが良好なクレンジング料であると評価した。
◎：３０秒以内に完全に溶解した場合。
○：３０秒を超えて１分以内に完全に溶解した場合。
△：１分を超えて２分以内に完全に溶解した場合。
×：２分以内に完全に溶解しない場合。
【００４１】
（７）口紅に対する溶解性Ｂ
口紅約０．０５ｇを塗布した手の甲にクレンジング料を１滴（約０．０５ｇ）落とし、指で１０回又は２０回こすった後水洗いをして口紅に対する溶解性について下記のように評価し、１０回のこすり洗いにより完全に除去できた場合を口紅に対する溶解性Ｂが良好なクレンジング料であると評価した。
○：１０回のこすり洗いにより完全に除去できた場合。
△：２０回のこすり洗いにより完全に除去できた場合。
×：２０回のこすり洗いによっても完全に除去できなかった場合。
【００４２】
（８）保存安定性
クレンジング料を透明ガラス容器に密封して０℃、２５℃および４０℃で３ヶ月間保存し、その外観を観察して下に示す３段階で評価した。
○：安定性良好（いずれの温度でも外観の変化がない。）
△：安定性やや不良（いずれかの温度において若干着色を生じる。）
×：安定性不良（いずれかの温度において分離、または着色が著しい。）
【００４３】
（９）眼粘膜刺激性試験
日本白色種ウサギ（１群３匹）を用いて次のようにして試験と評価を行った。試験はＯＥＣＤ毒性試験ガイドラインの試験法（４０５）に基づいて実施し、試験濃度は原液とした。判定はＤｒａｉｚｅ法の判定基準に基づいて行い、急性眼刺激指数の最大値（I.A.O.I値）により下記のように判定し、I.A.O.I値２．５未満（◎、○）の場合を刺激性の低いクレンジング料であると評価した。
◎： I.A.O.I値 ０以上０．５未満
○： I.A.O.I値 ０．５以上２．５未満
△： I.A.O.I値 ２．５以上１５未満
×： I.A.O.I値 １５以上
【００４４】
【表１】

【００４５】
【表２】

【００４６】
【表３】

【００４７】
実施例１〜７より、本発明のクレンジング料はいずれも使用時の肌へののび、汚れとのなじみ性、洗浄性、すすぎ性および使用後の感触に優れ、保存安定性が良好な安全性の高い組成物であった。
これに対して比較例１〜１０では十分な性能が得られていない。比較例１はａ、ｂ成分の含有量合計ａ＋ｂが少ないため、汚れとのなじみ性や洗浄性が悪いばかりでなく、口紅に対する溶解性も不良であった。比較例２はａ＋ｂが多いため、すすぎ性や使用後の感触が悪いばかりでなく、保存安定性が不良であった。比較例３はａ成分とｂ成分の重量比ａ／ｂが１より小さいため、保存安定性が不良であった。比較例４はａ／ｂが大きいため、汚れとのなじみ性や洗浄性が悪いばかりでなく、口紅に対する溶解性も不良であった。比較例５はｃ成分の代わりにポリオキシエチレンソルビタン脂肪酸エステル型非イオン性界面活性剤を含有しているため、洗浄性、すすぎ性および使用後の感触が悪いばかりでなく、口紅に対する溶解性や保存安定性も不良であった。比較例６はｃ、ｄ成分の含有量合計ｃ＋ｄが少ないため、洗浄性が悪く、口紅に対する溶解性や保存安定性も不良であった。比較例７はｃ＋ｄが多いため、使用時ののびが悪かった。比較例８はｃ成分とｄ成分の重量比ｃ／ｄが小さいため、すすぎ性や使用後の感触が悪いばかりでなく、保存安定性も不良であった。比較例９はｃ／ｄが大きいため、保存安定性が不良であった。比較例１０はａ、ｂ、ｃおよびｄ成分の含有量合計ａ＋ｂ＋ｃ＋ｄが少ないため、汚れとのなじみ性や洗浄性が悪いばかりでなく、口紅に対する溶解性も不良であった。
【００４８】
【発明の効果】
本発明のクレンジング料は、使用時の肌へののび、汚れとのなじみ性、洗浄性、すすぎ性および使用後の感触に優れ、保存安定性が良好な安全性の高い組成物であった。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a makeup cleanser, a UV-preventive cosmetic, and a skin cleansing agent that removes dirt such as sebum, and more specifically, spreads to the skin during use, compatibility with dirt, cleanability, rinse The present invention relates to a cleansing material with excellent safety and feel after use, and high storage stability with good storage stability.
[0002]
[Prior art]
Makeup cosmetics and anti-UV cosmetics have the effect of protecting the skin from external stimuli and making it appear more beautiful, and are indispensable in the lives of modern society. However, since these cosmetics contain a large amount of oily components, inorganic pigment components, etc., they block the pores of the skin, impede metabolism, and the cosmetics themselves may be gradually oxidized to be irritating. Use will cause skin problems. For this reason, it is desirable to remove these cosmetics once a day using a cleansing material.
There are wiping types and cleansing products that are washed away with water or hot water. However, in recent years, “washing out” products that are simpler and less burdensome on the skin have been favored. The performance required for a cleansing-type cleansing agent includes the ability to spread during use, compatibility with dirt, cleanability (stain removal), rinsing properties, and feel after cleaning. Various compositions have been studied so far. It has been.
[0003]
For example, Japanese Patent Application Laid-Open No. 62-108806 and Japanese Patent Application Laid-Open No. 3-161428 disclose cleansing materials obtained by combining a specific surfactant and liquid oil. However, these compositions are not satisfactory in the feeling after use, although they are excellent in spreading at the time of use, compatibility with dirt, and cleaning properties. Japanese Patent Application Laid-Open No. 9-87139 discloses a cleansing makeup containing an alkyl methacrylate copolymer, a specific surfactant, a water-soluble polyhydric alcohol, and an oil component content of 2% by weight or less. Fees are disclosed. However, the content of the oily component is small, and it is not satisfactory in terms of ease of compatibility with spread and dirt during use and cleanability. Further, JP-A-8-127512 discloses a gel cleansing composition containing a nonionic surfactant, a water-soluble compound having a hydroxyl group, a liquid oil and water. That wasn't enough.
[0004]
Furthermore, polyoxyethylene glycerin fatty acid esters are often used in cleansing materials for the purpose of improving detergency, rinsing properties and feel after use. For example, JP-A-11-92359 discloses a one-phase transparent skin cleanser containing a polyoxyethylene glycerin fatty acid ester, and JP-A-2001-19619 contains a gelling agent and polyoxyethylene fatty acid glyceryl. A cleansing cosmetic is disclosed, but it is not sufficient in terms of ease of compatibility with spread and dirt during use. Japanese Patent Application Laid-Open No. 2001-213761 discloses that one or more selected from anionic surfactants, nonionic surfactants excluding polyoxyethylene glycerin fatty acid esters, and amphoteric surfactants and polyoxy Although a skin cleanser composition containing an ethylene glycerin fatty acid ester and a non-silicone oil is disclosed, it is not sufficient in terms of ease of compatibility with dirt and cleanability.
[0005]
Thus, the present condition is that the composition satisfy | filled simultaneously at the time of use at the same time about the spread | extendedness at the time of use, the compatibility with a stain | pollution | contamination, the touch after use, and storage stability has not been obtained until now. In addition, since cleansing materials are often used on the face, it is desired to develop cleansing materials that are less irritating to the eyes.
[0006]
[Problems to be solved by the invention]
The present invention solves the above-mentioned problems, and provides a cleansing material with high safety that is excellent in storage stability, excellent in spreading to the skin during use, compatibility with dirt, cleanability, rinsing properties and feel after use. The purpose is to provide.
[0007]
[Means for Solving the Problems]
That is, the present invention
(1) The following a, b, c and d are contained, a + b is 20 to 75% by weight, c + d is 20 to 60% by weight, a + b + c + d is 60 to 98% by weight, and a / b weight ratio a / A cleansing material, wherein b is 1/1 to 10/1, and the weight ratio c / d between c and d is 1/1 to 4/1.
a. A hydrocarbon oil which is liquid at 25 ° C. b. Ester oil which is liquid at 25 ° C. c. Polyoxyethylene glycerin fatty acid ester type nonionic surfactant d. Sorbitan fatty acid ester type nonionic surfactant (2) e. The cleansing material described above, which contains 1 to 15% by weight of a cyclic silicone oil that is liquid at 25 ° C.
(3) f. Containing 60 to 100% by weight of a structural unit based on 2- (meth) acryloyloxyethyl phosphorylcholine represented by formula (1) and a structural unit based on (meth) acrylic acid alkyl ester as 100/0 to 10/90 by weight ratio Polymer to
[Chemical 2]

(Wherein R ¹ is a hydrogen atom or a methyl group, R ² , R ³ and R ⁴ are alkyl groups having 1 to 8 carbon atoms, and n is an integer of 2 to 4)
Is a cleansing material according to (1) or (2) above, characterized by containing 0.0001 to 1% by weight.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The component a used in the present invention is a hydrocarbon oil that is liquid at 25 ° C.
Hydrocarbon oil is a hydrocarbon compound having 10 or more carbon atoms, and may have a linear, branched or cyclic structure, or may have a saturated or unsaturated bond, and is a constituent of petroleum or plant essential oil. In addition to naturally occurring terpenes, those synthesized artificially can also be used. Examples include normal paraffins such as decane, undecane, dodecane, tridecane, tetradecane, pentadecane, and decene, isoparaffins having a branch in the carbon chain, squalane and squalene, and the like. From the viewpoint of feel after use and storage stability, it is preferable to use a compound having a viscosity of 100 mPa · s or less at 25 ° C. among normal paraffin, isoparaffin, and squalane.
[0009]
The component b used in the present invention is an ester oil that is liquid at 25 ° C.
The ester oil is a carboxylic acid ester compound having a structure obtained by dehydration reaction or transesterification reaction between a carboxylic acid and a monohydric alcohol, and specifically, diethyl sebacate, 2-ethylhexanoic acid. Cetyl, isocetyl 2-ethylhexanoate, isopropyl palmitate, 2-ethylhexyl palmitate, isopropyl isostearate, 2-hexyldecyl isostearate, isostearyl isostearate, trimethylpropane triisostearate, octyldodecyl myristate, isopropyl myristate, Isostearyl myristate, isocetyl myristate, hexyl laurate, ethyl oleate, isostearyl pivalate, isopropyl isostearate, isononyl isononanoate, isononanoic acid 2 Synthetic ester oils such as ethylhexyl, isodecyl isononanoate, ethyl oleate, isotridecyl isononanoate, neopentyl glycol didecanoate, glyceryl tri-2-ethylhexanoate, glyceryl trihexanoate, jojoba oil, sunflower oil, olive oil, macadamia nut oil, Examples include ester oils derived from natural fats and oils such as tea seed oil, cotton seed oil, perilla oil, safflower oil, and kyounin oil. In terms of easy compatibility with dirt, cleanability and feel after use, preferably diethyl sebacate, cetyl 2-ethylhexanoate, isocetyl 2-ethylhexanoate, isopropyl palmitate, 2-ethylhexyl palmitate, oleic acid Ethyl, isononyl isononanoate, 2-ethylhexyl isononanoate, isodecyl isononanoate, glyceryl tri-2-ethylhexanoate, jojoba oil, sunflower oil, olive oil, macadamia nut oil, tea seed oil, cottonseed oil, perilla oil, safflower oil, konnin oil It is.
[0010]
In the composition of the present invention, the total content a + b of the components a and b is 20 to 75% by weight, preferably 30 to 70% by weight, and more preferably 40 to 65% by weight. If the amount is less than 20% by weight, the compatibility with oily dirt and the cleaning property are deteriorated. If the amount is more than 75% by weight, not only the rinsing property and the feeling after use are deteriorated but also the storage stability of the product is deteriorated. Become.
The weight ratio a / b of the component a and the component b is 1/1 to 10/1, preferably 1/1 to 8/1, and more preferably 3/2 to 5/1. When it is less than 1/1, the storage stability is deteriorated, and when it is more than 10/1, the compatibility with the oily soil and the washability are deteriorated.
[0011]
The polyoxyethylene glycerin fatty acid ester type nonionic surfactant of component c used in the present invention is a compound obtained by esterifying glycerin and fatty acid and then adding ethylene oxide, and polyoxyethylene glycerin mono fatty acid. Examples include esters and polyoxyethylene glycerin difatty acid esters, and the component c can be used alone or in combination of two or more.
[0012]
The fatty acid constituting the component c used in the present invention is a saturated or unsaturated fatty acid having 8 to 24 carbon atoms. For example, a single fatty acid such as lauric acid, myristic acid, palmitic acid, stearic acid or oleic acid, coconut oil Mixed fatty acids derived from animal and vegetable oils such as fatty acids and beef tallow fatty acids can be used. The preferred fatty acid has 10 to 18 carbon atoms. When the number of carbon atoms of the fatty acid is less than 8, the lipophilicity is low, so that the familiarity with the oily soil is deteriorated and the detergency may be lowered, and an irritating odor may be generated. When the number of carbon atoms of the fatty acid exceeds 24, the hydrophilicity is low and the compatibility with water is deteriorated, so that it is difficult to make a refreshing wash.
[0013]
The average number of moles of ethylene oxide added per mole of glycerin is preferably 5 to 100, more preferably 5 to 80, and most preferably 7 to 50. When the average added mole number of ethylene oxide is less than 5, the hydrophilicity is low, so that the compatibility with water is deteriorated and it is difficult to make a refreshing wash. On the other hand, when it exceeds 100, the lipophilicity is lowered, so that the compatibility with oily soil is deteriorated, and the detergency may be lowered.
Further, the HLB value of the component c used in the present invention is preferably 10 to 20, more preferably 10 to 18, and most preferably 11 to 16. When the HLB value is less than 10, the hydrophilicity is low, so the compatibility with water is deteriorated and it is difficult to make a fresh wash. On the other hand, when it exceeds 20, not only the storage stability is deteriorated, but also the lipophilicity is lowered, so that the compatibility with the oily soil is deteriorated, and the cleaning property may be lowered. The HLB value here is determined by the concept of HLB of Griffin (WC Griffin: J. Soc. Cosmetic Chemist, 33, 1180 (1960)).
[0014]
Specifically, as the component c, polyoxyethylene (7 mol) glycerin coconut oil fatty acid ester (HLB value = 13.0), polyoxyethylene (12 mol) glycerin laurate (HLB value = 15.0), Polyoxyethylene (20 mol) glycerin oleate (HLB value = 15.4), polyoxyethylene (30 mol) glycerine coconut oil fatty acid ester (HLB value = 17.4), and the like.
[0015]
The sorbitan fatty acid ester type nonionic surfactant which is the d component used in the present invention is a compound obtained by subjecting sorbitan and a fatty acid to an ester reaction. Examples include tetra fatty acid esters. In the present invention, these compounds can be used alone or in combination of two or more as the d component.
[0016]
The fatty acid constituting the component d used in the present invention is a saturated or unsaturated fatty acid having 8 to 24 carbon atoms, and examples thereof include fatty acids constituting the component c. The preferred fatty acid has 10 to 20 carbon atoms. When the number of carbon atoms of the fatty acid is less than 8, the lipophilicity is low, so that the familiarity with the oily soil is deteriorated and the detergency may be lowered, and an irritating odor may be generated. When the number of carbon atoms of the fatty acid exceeds 24, the hydrophilicity is low and the compatibility with water is deteriorated, so that it is difficult to make a refreshing wash.
[0017]
Specific examples of the component d include sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, and the like.
[0018]
In the composition of the present invention, the total content c + d of components c and d is 20 to 60% by weight, preferably 25 to 50% by weight, and more preferably 30 to 40% by weight. When it is less than 20% by weight, the cleaning property and storage stability are deteriorated, and when it exceeds 60% by weight, the spread during use is deteriorated.
The weight ratio c / d between the c component and the d component is 1/1 to 4/1, preferably 3/2 to 7/2, and more preferably 2/1 to 3/1. When the ratio is less than 1/1, not only the rinsing property is deteriorated, but also the feeling after use and the storage stability are deteriorated, and when it exceeds 4/1, the storage stability is deteriorated.
[0019]
In the composition of the present invention, the total content a + b + c + d of the components a, b, c and d is 60 to 98% by weight, preferably 70 to 97% by weight or more, and more preferably 80 to 95% by weight or more. When the amount is less than 60% by weight, familiarity with dirt and cleaning properties are deteriorated, and when it exceeds 98% by weight, the feeling after use may be deteriorated.
[0020]
In the present invention, it is preferable to add the e component for the purpose of further improving the compatibility at the time of use, the compatibility with the oily soil, and the cleaning property.
The e component used in the present invention is a cyclic silicone oil that is liquid at 25 ° C.
Here, the cyclic silicone oil is a cyclic polysiloxane compound, and examples thereof include dimethylcyclosiloxane in which two methyl groups are bonded to one silicon atom. The e component used in the present invention is not limited to this, and any cyclic polysiloxane compound that is liquid at 25 ° C. may be used. In the case of dimethylcyclosiloxane, a compound having a siloxane polymerization degree of 4 or more is liquid at 25 ° C., and examples of such compounds include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and tetradecasiloxane. Examples thereof include methylcycloheptasiloxane, but octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane are preferred from the viewpoint of easy compatibility with dirt, cleanability, and feel after use. The chain silicone oil has poor compatibility with dirt, cleanability, and feel after use.
[0021]
In the composition of the present invention, the amount of component e is 1 to 15% by weight, preferably 2 to 12% by weight, and more preferably 5 to 10% by weight. When the amount is less than 1% by weight, the compatibility with oily soil, the washing property, and the feeling after use are not sufficiently improved, and when it exceeds 15% by weight, the storage stability of the product may be deteriorated.
Moreover, when adding e component, it is preferable that the total content of a, b component and e component which are the oil-based components of this invention is 21 to 80 weight%, More preferably, it is 30 to 75 weight%. If it exceeds 80% by weight, the storage stability may deteriorate.
[0022]
In the present invention, it is preferable to further add the f component for the purpose of improving safety and storage stability.
The polymer of component f used in the present invention is represented by the formula (1) and is a copolymer of 2- (meth) acryloyloxyethyl phosphorylcholine (hereinafter referred to as PC) or a copolymer of PC and (meth) acrylic acid alkyl ester. The weight ratio of the polymer is 100/0 to 10/90, preferably 100/0 to 30/70, and more preferably 95/5 to 50/50. The total amount of the structural unit based on PC and the structural unit based on (meth) acrylic acid alkyl ester in the polymer is 60 to 100% by weight, preferably 70 to 100% by weight, more preferably 80 to 100% by weight. %. The molecular weight of the polymer is preferably 10,000 to 10,000,000, more preferably 50,000 to 5,000,000.
[0023]
In the polymer of component f used in the present invention, a copolymer of PC and another monomer having copolymerizability with (meth) acrylic acid alkyl ester is contained within a range not impairing the effects of the present invention. be able to.
Other monomers copolymerizable with PC and (meth) acrylic acid alkyl esters are compounds having a double bond capable of addition polymerization, such as olefinic carbonization such as ethylene, propylene, butene, isobutene and styrene. Hydrogen and their isomerized olefins, multimerized olefins, or olefinic compounds in which various derivatives are introduced; ethylenic unsaturation such as acrylic acid, methacrylic acid, vinyl acetic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid Carboxylic acids and their multimers, anhydrides, esters with polyhydric alcohols having 1 to 6 carbon atoms, or ethylenically unsaturated carboxylic acid derivatives in which a carbonyl group, amino group, cyano group, nitrile group or the like is introduced; Vinyl alcohol and its esters with various carboxylic acids, various alcohols Ethers, ethylenically unsaturated carboxylic acid derivatives introduced with a carbonyl group, amino group, cyano group, nitrile group, etc., vinyl alcohol and esters thereof with various carboxylic acids, ethers with various alcohols, or carbonyls with these And vinyl alcohol derivatives into which a group, amino group, cyano group, nitrile group, etc. are introduced.
In the monomer PC, R ¹ is a hydrogen atom or a methyl group, R ² , R ³ and R ⁴ are alkyl groups having 1 to 8 carbon atoms, and n is an integer of 2 to 4. R ¹ , R ² , R ³ and R ⁴ are preferably methyl groups and n is 2, 2-methacryloyloxyethyl phosphorylcholine (hereinafter referred to as MPC).
The alcohol constituting the monomeric (meth) acrylic acid alkyl ester is an alcohol having 1 to 6 carbon atoms, preferably an alcohol having 2 to 5 carbon atoms, more preferably an alcohol having 3 to 4 carbon atoms. . In addition, (meth) acryl shows methacryl or acrylic.
[0025]
In the composition of the present invention, the amount of component f added is 0.0001 to 1% by weight, preferably 0.001 to 0.5% by weight, and more preferably 0.01 to 0.1% by weight. When the amount is less than 0.0001% by weight, the effect of improving the safety and storage stability is insufficient, and when it exceeds 1% by weight, not only the spread during use is deteriorated but also disadvantageous in terms of cost. It is not preferable.
[0026]
In addition, the cleansing material of the present invention includes components generally used in cosmetics as necessary in addition to the above components, such as lower alcohols, oily bases, humectants, water-soluble polymers, silicone derivatives, nonionic interfaces. Activators, anionic surfactants, amphoteric surfactants, semipolar surfactants, cationic surfactants, inorganic or organic powders, inorganic or organic pigments, dyes, inorganic or organic salts, pH adjusters, bactericides Agents, chelating agents, antioxidants, ultraviolet absorbers, anti-inflammatory agents, natural extracts, essential oils, perfumes and the like.
[0027]
【Example】
Next, the present invention will be described in more detail by way of examples.
Examples 1-7 and Comparative Examples 1-10
Cleansing materials shown in Tables 1 to 3 were prepared and evaluated by the following methods. The results are shown in Tables 1 to 3. The content in the table indicates the effective weight%.
[0028]
<a component>
Three types of hydrocarbon oils shown below were used. These are all liquid at 25 ° C.
<a-1 component>
Isoparaffin: Nippon Oil & Fats Co., Ltd. “Pearl Ream 4”
<a-2 component>
Isoparaffin: Nippon Oil & Fats Co., Ltd. “Pearl Dream EX”
<a-3 component>
Squalane: Sophim's "Phytosqualane"
[0029]
<b component>
Seven types of ester oils shown below were used. These are all liquid at 25 ° C.
<b-1 component>
Jojoba oil: “refined jojoba oil” manufactured by Koei Kogyo Co., Ltd.
<b-2 component>
Ethyl oleate: NOFABLE EO-85S manufactured by NOF Corporation
<b-3 component>
Cetyl 2-ethylhexanoate: “CEH” manufactured by Higher Alcohol Industry Co., Ltd.
<b-4 component>
Isodecyl isononanoate: “KAK-109” manufactured by Higher Alcohol Industry Co., Ltd.
<b-5 component>
Glyceryl tri-2-ethylhexanoate: “Panasate 800B” manufactured by NOF Corporation
<b-6 component>
Sunflower oil: “refined sunflower oil 85” manufactured by Nippon Oil & Fats Co., Ltd.
<b-7 component>
Olive oil: "refined olive oil" manufactured by Nippon Oil & Fats Co., Ltd.
[0030]
<component c>
The following three types of polyoxyethylene glycerin fatty acid ester type nonionic surfactants were used.
<C-1 component>
Polyoxyethylene (7 mol) glycerin coconut oil fatty acid ester: “CETIOL HE” manufactured by Cognis Japan Co., Ltd., HLB value = 13.0
<C-2 component>
Polyoxyethylene (20 mol) glycerin oleate: “Yuniguri MO-220” manufactured by NOF Corporation, HLB value = 15.4
<C-3 component>
Polyoxyethylene (12 mol) glycerin laurate: “Yuniguri ML-212” manufactured by NOF Corporation, HLB value = 15.0
[0031]
<d component>
The following three types of sorbitan fatty acid ester type nonionic surfactants were used.
<d-1 component>
Sorbitan monostearate: “Nonion SP-60RP” manufactured by NOF Corporation
<d-2 component>
Sorbitan monooleate: NOFABLE SO-851S manufactured by NOF Corporation
<d-3 component>
Sorbitan sesquioleate: NOFABLE SO-852S manufactured by NOF Corporation
[0032]
<e component>
The following two types of cyclic silicone oils were used. These are all liquid at 25 ° C.
<e-1 component>
Decamethylcyclopentasiloxane: “Silicone KF-995” manufactured by Shin-Etsu Chemical Co., Ltd.
<e-2 component>
Octamethylcyclotetrasiloxane: “Silicone KF-994” manufactured by Shin-Etsu Chemical Co., Ltd.
[0033]
<F component>
Two types of polymers shown below were used.
<F-1 component>
5% aqueous solution of copolymer having an average molecular weight of 600,000 consisting of 90% by weight of MPC and 10% by weight of butyl methacrylate: “Lipidure-PMB” manufactured by NOF Corporation
<F-2 component>
40% aqueous solution of polymer having an average molecular weight of 80,000 composed of 100% by weight of MPC: “Lipidure-HM” manufactured by NOF Corporation
[0034]
<Other ingredients>
<Others-1>
Polyoxyethylene (20 mol) sorbitan monooleate: NOFABLE ESO-8520 manufactured by NOF Corporation
[0035]
The characteristics in Tables 1 to 3 were evaluated by the following methods.
(1) 20 females (21 to 35 years old) who made makeup at the time of use are panelists, and the use of cleansing fee is determined as follows. The total value of 20 people is 30 points or more. Was evaluated as a cleansing agent with a good spread during use.
2 points: When it feels easy to use and feels light.
1 point: When the feel of use is slightly poor and feels slightly heavy.
0 point: When the feel of use is poor and the feel is heavy.
[0036]
(2) Twenty women (21 to 35 years old) with makeup that is compatible with dirt are panelists, and the compatibility with dirt when using a cleansing fee is determined as follows. A value of 30 or more was evaluated as a cleansing material with good compatibility with dirt.
2 points: When it is felt that it has become dirty with makeup immediately after application.
1 point: If you feel that you are not familiar with makeup stains.
0 points: When it is apparently unfamiliar with makeup stains.
[0037]
(3) 20 women (21 to 35 years old) who had a cleansing makeup were used as panelists, and the cleanability (stain removal) when using a cleansing fee was determined as follows. 30 points or more were evaluated as cleansing materials with good detergency.
2 points: When you feel that makeup stains have been removed sufficiently.
1 point: When it feels that makeup stains are slightly removed.
0 points: When the makeup stains are clearly felt to be bad.
[0038]
(4) 20 females (21 to 35 years old) who have made rinsing makeup are panelists, use a cleansing fee, and determine the rinsing properties when rinsed with warm water as follows. Evaluated that it was a cleansing material with good rinsing properties.
2 points: When the user feels that rinsing has been completed promptly without slickness.
1 point: When slightly lingering remains during rinsing and feels that rinsing is not easy.
0 point: It is hard to fall off, and when it feels that the rinse property is clearly bad.
[0039]
(5) Twenty women (21 to 35 years old) who made touch feel after use were panelists, and the touch after using cleansing fee was determined as follows, and the total value of 20 people was 30 points or more Was evaluated as a cleansing material with a good feel after use.
2 points: When there is no stickiness and the skin feels smooth.
1 point: When it feels somewhat sticky or the skin is somewhat bulky.
0 points: When the stickiness is high or the skin feels bulky.
[0040]
(6) Solubility A for lipstick
After applying about 0.03g of lipstick to the bottom of a 100ml beaker, add 10g of cleansing material and stir with a stirrer at a speed of 60 rpm to evaluate the solubility in the lipstick as follows. When dissolved (◎, ○), it was evaluated as a cleansing material having good solubility A for lipstick.
A: When completely dissolved within 30 seconds.
○: When completely dissolved within 1 minute over 30 seconds.
Δ: When completely dissolved within 2 minutes exceeding 1 minute.
X: When not completely dissolved within 2 minutes.
[0041]
(7) Solubility B for lipstick
1 drop (about 0.05 g) of cleansing material was applied to the back of the hand coated with about 0.05 g of lipstick, rubbed with fingers 10 or 20 times, then washed with water and evaluated for solubility in lipstick as follows. The case where it was completely removed by rubbing was evaluated as a cleansing material having good solubility B for lipstick.
○: When completely removed by 10 rubs.
(Triangle | delta): When it can remove completely by scrubbing 20 times.
X: When it was not completely removed even after 20 scrubbing.
[0042]
(8) Storage stability The cleansing material was sealed in a transparent glass container and stored at 0 ° C., 25 ° C. and 40 ° C. for 3 months. The appearance was observed and evaluated in the following three stages.
○: Good stability (no change in appearance at any temperature)
Δ: Slightly poor (slightly colored at any temperature)
X: Stability failure (separation or coloring is remarkable at any temperature)
[0043]
(9) Ocular mucosal irritation test Japanese white rabbits (3 per group) were tested and evaluated as follows. The test was conducted based on the test method (405) of the OECD toxicity test guideline, and the test concentration was a stock solution. Judgment is based on the criteria of the Draize method, and it is judged as follows based on the maximum value (IAOI value) of the acute eye irritation index. When the IAOI value is less than 2.5 (◎, ○), cleansing with low irritation It was evaluated as a fee.
◎: IAOI value 0 or more and less than 0.5 ○: IAOI value 0.5 or more and less than 2.5 △: IAOI value 2.5 or more and less than 15 ×: IAOI value 15 or more
[Table 1]

[0045]
[Table 2]

[0046]
[Table 3]

[0047]
From Examples 1 to 7, all of the cleansing materials of the present invention are excellent in spreading on the skin during use, compatibility with dirt, cleanability, rinsing properties and feel after use, and good storage stability. The composition was high.
On the other hand, in Comparative Examples 1-10, sufficient performance is not obtained. In Comparative Example 1, since the total content a + b of the components a and b was small, not only the compatibility with dirt and the cleaning property were poor, but also the solubility in lipstick was poor. In Comparative Example 2, since a + b is large, not only the rinsing property and the feeling after use were bad, but also the storage stability was poor. In Comparative Example 3, since the weight ratio a / b between the component a and the component b was smaller than 1, the storage stability was poor. In Comparative Example 4, since a / b was large, not only the compatibility with dirt and the cleaning property were poor, but also the solubility in lipstick was poor. Since Comparative Example 5 contains a polyoxyethylene sorbitan fatty acid ester type nonionic surfactant in place of the component c, it not only has poor cleaning properties, rinsing properties, and feel after use, but also has solubility in lipstick and Storage stability was also poor. In Comparative Example 6, the total content c + d of the c and d components was small, so that the detergency was poor and the solubility in lipstick and the storage stability were also poor. Since Comparative Example 7 had a large amount of c + d, the spread during use was poor. In Comparative Example 8, since the weight ratio c / d between the c component and the d component was small, not only the rinsing properties and the feeling after use were bad, but also the storage stability was poor. In Comparative Example 9, since c / d was large, the storage stability was poor. In Comparative Example 10, since the total content a + b + c + d of the components a, b, c and d was small, not only the compatibility with dirt and the cleaning property were poor, but also the solubility in lipstick was poor.
[0048]
【The invention's effect】
The cleansing material of the present invention was a highly safe composition having excellent storage stability, excellent skin spreading during use, compatibility with dirt, cleanability, rinsing properties and feel after use.

Claims (3)

A + b is 20 to 75% by weight, c + d is 20 to 60% by weight, a + b + c + d is 60 to 98% by weight, and the weight ratio a / b is 1 / 1 to 10/1, and the weight ratio c / d of c to d is 1/1 to 4/1.
a. A hydrocarbon oil which is liquid at 25 ° C. b. Ester oil which is liquid at 25 ° C. c. Polyoxyethylene glycerin fatty acid ester type nonionic surfactant d. Sorbitan fatty acid ester type nonionic surfactant e. The cleansing material according to claim 1, comprising 1 to 15% by weight of a cyclic silicone oil which is liquid at 25 ° C. f. Containing 60 to 100% by weight of a structural unit based on 2- (meth) acryloyloxyethyl phosphorylcholine represented by formula (1) and a structural unit based on (meth) acrylic acid alkyl ester as 100/0 to 10/90 by weight ratio Polymer to

(Wherein R ¹ is a hydrogen atom or a methyl group, R ² , R ³ and R ⁴ are alkyl groups having 1 to 8 carbon atoms, and n is an integer of 2 to 4)
The cleansing material according to claim 1 or 2, characterized by containing 0.0001 to 1% by weight.