JP4126248B2 - Water-in-oil emulsion composition - Google Patents
Water-in-oil emulsion composition Download PDFInfo
- Publication number
- JP4126248B2 JP4126248B2 JP2003151510A JP2003151510A JP4126248B2 JP 4126248 B2 JP4126248 B2 JP 4126248B2 JP 2003151510 A JP2003151510 A JP 2003151510A JP 2003151510 A JP2003151510 A JP 2003151510A JP 4126248 B2 JP4126248 B2 JP 4126248B2
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- JP
- Japan
- Prior art keywords
- oil
- water
- component
- emulsion composition
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000001035 drying Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
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- 239000003676 hair preparation Substances 0.000 description 1
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- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
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- DXGLGDHPHMLXJC-UHFFFAOYSA-N oxybenzone Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 DXGLGDHPHMLXJC-UHFFFAOYSA-N 0.000 description 1
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- YVBBRRALBYAZBM-UHFFFAOYSA-N perfluorooctane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YVBBRRALBYAZBM-UHFFFAOYSA-N 0.000 description 1
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- 229940066842 petrolatum Drugs 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
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- 238000005063 solubilization Methods 0.000 description 1
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Description
【０００１】
【発明の属する技術分野】
本発明は、特に油中水型乳化化粧料に好適な油中水型乳化組成物に関し、更に詳しくは、特定のシリコーン化合物、シリコーン油を含む油剤、ポリアスパラギン酸塩、及び水を特定量含有し、使用時の感触と肌効果に優れ、経時安定性が良好な油中水型乳化組成物に関する。
【０００２】
【従来の技術】
従来より、化粧料として用いられる一般的な乳化組成物は、油中水型（Ｗ／Ｏ型）乳化組成物と水中油型（Ｏ／Ｗ型）乳化組成物に大別される。
油中水型乳化組成物は、水中油型乳化組成物と比較すると、肌への親和性が高く、水分の蒸散を防ぎ、肌を乾燥から保護したり、肌にトリートメント効果を付与する等、その官能特性の広さから、様々な化粧料に応用されている。
【０００３】
油中水型乳化組成物は、外相が油剤であるため、肌に塗布した際に油感を比較的強く感じる場合がある。そこで、感触的にさっぱりとしたシリコーン油を配合させる検討がなされており、シリコーン油と有機変性粘土鉱物との配合（例えば、特許文献１参照。）や、シリコーン油と脂肪酸金属塩との配合（例えば、特許文献２参照。）等が提案されている。
【０００４】
また、油中水型乳化組成物においては、外相の油剤、乳化安定性を向上させるための界面活性剤、外相のゲル化剤等の検討だけでなく、内相である水相の検討もなされており、水膨潤性粘土鉱物と非イオン性界面活性剤との配合（例えば、特許文献３参照。）や、特定の活性剤と水性ゲル化試薬との配合（例えば、特許文献４参照。）等が提案されている。
【０００５】
【特許文献１】
特公平４−１９２６９号公報
【特許文献２】
特開平２−２５８７１１号公報
【特許文献３】
特開昭６１−２９９５９１号公報
【特許文献４】
特表平６−５０６４８７号公報
【０００６】
【発明が解決しようとする課題】
しかしながら、油中水型乳化組成物においては、上述したような特徴的な使用感、使用効果を得られるものの、後肌のハリ感（肌が潤って張ったような弾性がある感覚）の高いものを得ることが困難であった。即ち、通常の油中水型乳化組成物において、水分蒸散抑制や、後肌のハリ感向上のために用いられるペースト油、ワックス等の固形油等を多用すると、これらが外相に存在するために、使用中の伸びが顕著に重くなり、また、性状も固形〜固いクリーム状のものに制限される場合が多かった。また、外相にシリコーン油が多く配合されている場合、相溶性が低いことによる分離やブツ、結晶の析出の問題が発生する場合があった。
【０００７】
また、油中水型乳化組成物においては、水中油型乳化組成物のような使用中の水系成分の揮発にともなう転相と油系成分によるなじみ、とまりがないために、とまりが遅く、肌なじみが悪くずるつきを感じる場合が多かった。上記のペースト油、固形油等の配合効果は、内相にこれらが存在する水中油型乳化組成物においては有効であるが、外相に存在する油中水型乳化組成物においては効果がなく、とまりや肌なじみの良い油中水型乳化組成物を得ることが困難な現状にあった。
【０００８】
【課題を解決するための手段】
上記実情に鑑み、本発明者は鋭意研究の結果、特定の界面活性剤等とポリアスパラギン酸塩を含有することにより、使用中の感触において肌なじみが良く、使用後の肌効果に非常に高いハリ感や高い保湿効果が認められ、なおかつ経時安定性も非常に良好な油中水型乳化組成物が得られることを見出し、本発明を完成するに至った。
ここで、ポリアスバラギン酸塩は、肌への親和性が高く、優れた保湿能と吸湿性を持つ安全性の高い保湿剤であることが知られ、化粧料への配合が提案されている（特開平６−１５７２３７号公報、特開２０００−１０３７２７号公報）。しかしながら、凝集性の強い電解質ポリマーであるために乳化系に安定に配合することが困難であり、また、塗布した際に強い粘着性のべたつき感を伴うこと等から、その用途及び配合量は限られたものであった。
本発明においては、ポリアスバラギン酸塩のもっているべたつき感も非常に低減されており、なおかつ上記のように使用感、肌効果ともに優れ、製剤安定性にも優れるものが得られた。
【０００９】
すなわち本発明は、次の成分（ａ）〜（ｄ）；
（ａ）下記一般式（１）で表されるシリコーン化合物 ０．３〜５質量％
Ｒ１ ａＲ２ ｂＲ３ ｃＳｉＯ（４−ａ−ｂ−ｃ）／２ （１）
［式中、Ｒ１は炭素数１〜３０のアルキル基、アリール基、アラルキル基、フッ素置換アルキル基、あるいは、−ＣｍＨ２ｍ−Ｏ−（Ｃ２Ｈ４Ｏ）ｄ（Ｃ３Ｈ６Ｏ）ｅＲ４で表される有機基から選択される同種又は異種の有機基であり、Ｒ２は−ＣｍＨ２ｍ−Ｏ−（Ｃ２Ｈ４Ｏ）ｆ（Ｃ３Ｈ６Ｏ）ｇ−Ｒ５で表されるポリオキシアルキレン基、Ｒ３は下記一般式（２）
【００１０】
【化２】
で表されるオルガノシロキサンであって、Ｒ４は炭素数４〜３０の炭化水素基又はＲ６−（ＣＯ）−で示される有機基、Ｒ５は水素原子若しくは炭素数１〜３０の炭化水素基又はＲ６−（ＣＯ）−で示される有機基、Ｒ６は炭素数１〜３０の炭化水素基である。ａ、ｂ、ｃはそれぞれ１．０≦ａ≦２．５、０．００１≦ｂ≦１．５、０．００１≦ｃ≦１．５であり、ｄ、ｅはそれぞれ０≦ｄ≦５０、０≦ｅ≦５０の整数であり、ｆ、ｇはそれぞれ２≦ｆ≦２００、０≦ｇ≦２００、かつｆ＋ｇが３〜２００の整数である。また、ｍは０≦ｍ≦１５の整数、ｈは０≦ｈ≦５００の整数であり、ｎは１≦ｎ≦５の整数である。］
（ｂ）シリコーン油を含む油剤 ６〜５０質量％
（ｃ）ポリアスパラギン酸塩 ０．０２〜２０質量％
（ｄ）水相成分 ３〜９３質量％
を含有することを特徴とする油中水型乳化組成物である。
さらに、上述した成分（ｂ）において、油剤中に占めるシリコーン油の含有量が３０〜９７質量％であることを特徴とする油中水型乳化組成物である。
さらに、上述した成分（ｃ）及び成分（ｄ）を含有する水系のｐＨが４．５〜７．５であることを特徴とする油中水型乳化組成物である。
さらに、上述した成分に加え、さらに成分（ｅ）として無機粉体を０．１〜１０％質量含有することを特徴とする油中水型乳化組成物である。
さらに、該成分（ｅ）が光輝性顔料であることを特徴とする油中水型乳化組成物である。
さらには、油中水型乳化化粧料であることを特徴とする油中水型乳化組成物である。
以下、詳述する。
【００１２】
【発明の実施の形態】
本発明に用いられる成分（ａ）のシリコーン化合物は、前述した一般式（１）で表されるものであって、特開２００１−３９８１９号公報に記載されたものであり、優れた乳化性能及び乳化安定性を有するものである。
【００１３】
一般式（１）で表されるシリコーン化合物の質量平均分子量は特に限定されるものではないが、５００〜２００，０００であることが好ましく、特に１，０００〜１００，０００であることが好ましい。また、油中水型乳化組成物の乳化剤又は乳化助剤として、ＨＬＢが２．５〜６のものが好適に用いられる。市販品としては、ＫＦ−６０２８（信越化学工業社製）等が挙げられる。
【００１４】
成分（ａ）の含有量は、０．３〜５質量％（以下、単に「％」と記す）であり、より好ましくは０．５〜４％である。
成分（ａ）の含有量が０．３％未満であると、乳化性及び乳化安定性が充分ではなく、経時安定性の確保が困難となる。また、５％を超えて配合した場合には、使用時にべたつき感が生じたり、伸びが重くなる等、使用感触が悪化する。
【００１５】
本発明に用いられる成分（ｂ）の油剤は、油中水型乳化組成物の外相を形成するもので、感触的にさっぱり感を付与するために、シリコーン油を含有することを必須とする。
油剤としては、化粧品一般に使用される動物油、植物油、合成油等の起源及び、固形油、半固形油、液体油、揮発性油等の性状を問わず、炭化水素類、油脂類、ロウ類、硬化油類、エステル油類、脂肪酸類、高級アルコール類、フッ素系油類、ラノリン誘導体類、油性ゲル化剤類、親油性界面活性剤類、油溶性紫外線吸収剤類等を配合することができる。
具体的には、流動パラフィン、スクワラン、ワセリン、ポリイソブチレン、ポリブテン、パラフィンワックス、セレシンワックス、マイクロクリスタリンワックス、モンタンワックス、フィッシャートロプシュワックス等の炭化水素類、オリーブ油、ヒマシ油、ホホバ油、ミンク油、マカデミアンナッツ油、モクロウ等の油脂類、ミツロウ、ラノリン、カルナウバワックス、キャンデリラワックス、ゲイロウ、ホホバ油等のロウ類、セチルイソオクタネート、ミリスチン酸イソプロピル、パルミチン酸イソプロピル、ミリスチン酸オクチルドデシル、トリオクタン酸グリセリル、ジイソステアリン酸ポリグリセリル、トリイソステアリン酸ジグリセリル、トリベヘン酸グリセリル、ロジン酸ペンタエリトリットエステル、ジオクタン酸ネオペンチルグリコール、コレステロール脂肪酸エステル、Ｎ−ラウロイル−Ｌ−グルタミン酸ジ（コレステリル・ベヘニル・オクチルドデシル）等のエステル類、ステアリン酸、ラウリン酸、ミリスチン酸、ベヘン酸、イソステアリン酸、オレイン酸、ロジン酸等の高級脂肪酸類、ステアリルアルコール、セチルアルコール、ラウリルアルコール、オレイルアルコール、イソステアリルアルコール、ベヘニルアルコール等の高級アルコール類、パーフルオロポリエーテル、パーフルオロデカン、パーフルオロオクタン等のフッ素系油剤類、ラノリン、酢酸ラノリン・ラノリン脂肪酸イソプロピル、ラノリンアルコール等のラノリン誘導体、デキストリン脂肪酸エステル、蔗糖脂肪酸エステル、デンプン脂肪酸エステル、１２−ヒドロキシステアリン酸、ステアリン酸カルシウム等の油性ゲル化剤類、アミノ安息香酸エチル、メトキシケイ皮酸−２−エチルヘキシル、４−ｔｅｒｔ−ブチル−４’−メトキシジベンゾイルメタン、オキシベンゾン等の油溶性紫外線吸収剤類等が挙げられ、これらの一種又は二種以上を組み合わせて用いることができる。
【００１６】
シリコーン油は、油剤としての機能と感触的なさっぱり感を肌に付与することを目的として配合されるものであり、シリコーン油を配合しない場合には、使用中ののびが重くなったり油っぽくなるなど、良好な使用感が得られない。
シリコーン油の構造は特に限定されず、直鎖状、環状、架橋型等のいずれを用いても良い。
具体的に例示すると、ジメチルポリシロキサン、メチルフェニルポリシロキサン、メチルハイドロジェンポリシロキサン、ジメチルポリシロキサン・メチルフェニルポリシロキサン共重合体等の低粘度から高粘度のシリコーン油、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、テトラメチルテトラハイドロジェンシクロテトラシロキサン、テトラメチルテトラフェニルシクロテトラシロキサン等の環状シリコーン油、ステアロキシシリコーン等の高級アルコキシ変性シリコーン、高級脂肪酸変性シリコーン、アミノ変性シリコーン、フッ素変性シリコーン等が挙げられ、これらの一種又は二種を適宜選択して使用することができる。
これらのなかでも、さっぱりとした感触を容易に得られるという観点から、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等の環状シリコーン油が好ましい。
【００１７】
本発明に用いられる成分（ｂ）の含有量は６〜５０％であり、好ましくは７〜３５％である。６％未満では、外相比が低くなり安定な乳化が困難となり、また５０％を超えて配合すると、使用感が油っぽく、ずるついてとまりが悪くなるなど、官能面でのデメリットが大きくなる。
また、油剤中に占めるシリコーン油の含有量は特に限定されないが、好ましくは３０〜９７％、より好ましくは６０〜９６％である。
【００１８】
本発明に用いられる成分（ｃ）のポリアスパラギン酸塩は、使用中の肌なじみを良くし、使用後に皮膚上に保護膜を形成し、高い保湿効果を与え、肌のハリ感を付与するために用いられる。
ポリアスパラギン酸塩は、Ｌ−アスパラギン酸、Ｄ−アスパラギン酸、またはそれらの混合物がαまたはβ結合により重合したものである。その平均分子量は特に限定されるものではないが、１，０００〜１００，０００が好ましく、使用感並びに肌効果の観点から５，０００〜５０，０００のものがより好ましい。
その塩としては、ナトリウム、カリウム、マグネシウム等の金属塩、エタノールアミン塩、ジエタノールアミン塩、トリエタノールアミン塩等のアルカノールアミン塩、塩基性アミノ酸塩等が用いられる。
塩の中和度は、成分（ｃ）と後述する成分（ｄ）を含有する水系のｐＨが４．５〜７．５となるようにすることが好ましい。ｐＨが４．５未満や７．５を超える場合は、配合成分の劣化等により、酸敗臭やムレ臭の発生する場合がある。
市販品としては、ポリアスパラギン酸ナトリウムの３０％水溶液であるアクアデュウＳＰＡ−３０（味の素社製）等が挙げられる。
【００１９】
成分（ｃ）の含有量は０．０２〜２０％であり、より好ましくは０．１〜１５％である。
成分（ｃ）の含有量が０．０２％未満であると、剤型が不安定となって乳化滴の経時合一や粘度低下を招く場合があり、かつ使用中の肌なじみや後肌の保湿効果、ハリ感が十分でない。２０％を超えて配合すると、べたつきが出てしまうとともに、それ以上の配合効果が望めない。
【００２０】
本発明に用いられる成分（ｄ）の水相成分は、非連続相として連続相である油相に分散された水及び水溶性物質、水系分散物全般を指す。従ってその中には、水、親水性界面活性剤、低級アルコール類、ポリオール類、電解質、高分子物質、保湿成分、水溶性ビタミン類等の美容成分、防腐剤、紫外線吸収剤、酸化防止剤、色素などが含まれる。この水相成分には、必要に応じて、乳化又は可溶化等により油性物質を配合することが可能である。
【００２１】
成分（ｄ）の含有量は３〜９３％であり、より好ましくは１０〜９０％である。３％未満では、成分（ｃ）を十分に溶解することができず、使用感もみずみずしさが損なわれる。また、９３％を超えて配合すると、内相比率が高くなりすぎて乳化困難となる。
【００２２】
本発明の油中水型乳化組成物においては、上述した必須成分に加え、さらに成分（ｅ）として、無機粉体を含有することにより、使用中から使用後にかけてのべたつき感が更に低減された良好なものとなり、好ましい。
無機粉体としては、形状や粒子径は特に限定されるものではなく、球状、板状、不定形等の任意の形状、粒度分布のものを用いることができ、一般に化粧品に用いられるものを使用することができる。
例えば、具体的には、酸化チタン、コンジョウ、群青、ベンガラ、黄酸化鉄、黒酸化鉄、酸化チタン、酸化亜鉛、酸化アルミニウム、二酸化珪素、酸化マグネシウム、酸化ジルコニウム、炭酸マグネシウム、炭酸カルシウム、酸化クロム、水酸化クロム、カーボンブラック、ケイ酸アルミニウム、ケイ酸マグネシウム、ケイ酸アルミニウムマグネシウム、マイカ、合成マイカ、合成セリサイト、セリサイト、タルク、カオリン、炭化珪素、硫酸バリウム、ベントナイト、スメクタイト、窒化硼素等の体質／着色粉体類、オキシ塩化ビスマス、酸化鉄雲母チタン、有機顔料処理雲母チタン、アルミニウムパウダー等の光輝性粉体類、微粒子酸化チタン被覆雲母チタン、微粒子酸化亜鉛被覆雲母チタン、硫酸バリウム被覆雲母チタン、酸化チタン含有二酸化珪素、酸化亜鉛含有二酸化珪素等の複合粉体等が挙げられ、これらを一種又は二種以上組み合わせて用いることができる。また、これら粉体は、フッ素化合物、シリコーン系油剤、金属石ケン、ロウ、界面活性剤、油脂、炭化水素等を用いて公知の方法により表面処理を施したものや、有機粉体又は異種の無機粉体と複合化したものであっても良い。
これら無機粉体の中でも、雲母チタン、酸化鉄コーティング雲母等の光輝性顔料を用いることにより、美麗な外観を呈し、配合量によってはメークアップ効果も付与することが可能となるので、より好ましい。
【００２３】
本発明における成分（ｅ）の含有量は特に限定されないが、好ましくは０．１〜１０％、より好ましくは０．３〜５％である。
【００２４】
本発明においては、上記成分に加え、さらに通常の化粧料に用いられる成分、例えば、界面活性剤、無機粉体以外の粉体、紫外線吸収剤、酸化防止剤、殺菌剤、防腐剤、香料、着色料、美容成分等を本発明の効果を損なわない範囲で使用することができる。
また、本発明の油中水型乳化組成物は、通常の製造方法にて可能であり、例えば、油相中に水相を添加しながら乳化する分散乳化法等で得ることができる。
さらに、本発明の油中水型乳化組成物は、上述した成分を含有する油中水型乳化化粧料として用いるのが好ましいが、予め油中水型乳化物を調製し、さらに内水相に油分を乳化して油中水中油型（Ｏ／Ｗ／Ｏ型）乳化化粧料としたり、該油中水型乳化物を水中に分散して水中油中水型（Ｗ／Ｏ／Ｗ型）乳化化粧料としても良い。
【００２５】
本発明の油中水型乳化組成物は、乳液、クリーム、マッサージ料、ハンドクリーム、ボディクリ−ム、日焼け止め料等のスキンケア化粧料、ファンデーション、メークアップ下地、コントロ−ル料等のメークアップ化粧料、ヘア乳液、ヘアクリーム等の頭髪化粧料等として用いることができ、その使用法は、手で使用する方法、不織布等に含浸させて使用する方法等が挙げられる。
【００２６】
【実施例】
次に、実施例を挙げて本発明をさらに詳細に説明するが、本発明はこれらによりなんら制約されるものではない。
【００２７】
実施例１〜７及び比較例１〜５ 油中水型乳化化粧料
下記表１に示す油中水型乳化化粧料を製造し、経時安定性並びに使用感について評価した。
【００２８】
【表１】
（注１）味の素社製
（注２）信越化学工業社製
（注３）信越化学工業社製
【００３０】
（製造方法）
Ａ：成分１〜１０を７０℃にて均一に溶解する。
Ｂ：成分１１〜１９を７０℃にて均一に混合する。
Ｃ：ＢにＡを添加し、乳化する。
【００３１】
（評価方法）
１．経時安定性
表１の各化粧料を５℃、５０℃に、１ヶ月間恒温静置し、外観変化を目視にて観察し、以下の基準に従って判定を行った。
（判定基準） （判定）
外観的な変化は認められない ：○
５０℃、５℃のいずれかは分離傾向がある ：△
５０℃、５℃のいずれか、または両方が明らかに分離している ：×
【００３２】
２．使用感評価
実施例１〜７及び比較例１〜５の各化粧料について、女性専門パネル１０名により、下記の項目に関する評価をしてもらい、以下の基準に従って判定を行った。
【００３３】
（評価項目）
・使用時に肌なじみが良いと感じるか（＋）、否か（−）
・使用中から使用後にかけてべたつきがないと感じるか（＋）、否か（−）
・使用後に保湿効果が高いと感じるか（＋）、否か（−）
・使用後に肌のハリ感が高くなったと感じるか（＋）、否か（−）
【００３４】
（判定基準） （判定）
８名以上が＋とした ：◎
６〜７名が＋とした ：○
３〜５名が＋とした ：△
２名以下が＋とした ：×
上記評価方法により得られた結果を、表１に併せて示す。
【００３５】
評価結果から明らかなように、本発明に係る実施例１〜７は、経時安定性が良好で、使用感も良好なものであった。それに対し、比較例においては、すべてを満足するものは得られなかった。
【００３６】
実施例８ 固形状油中水型ファンデ−ション
（成分） （％）
１．アクアデュウＳＰＡ−３０（注４） １．０
２．エタノール ５．０
３．１，３−ブチレングリコール ５．０
４．クエン酸ナトリウム ０．５
５．香料 適量
６．精製水 残量
７．防腐剤 適量
８．硫酸バリウム被覆雲母チタン １．５
９．シリコーン被覆酸化チタン ７．５
１０．シリコーン被覆黄酸化鉄 ０．４
１１．シリコーン被覆ベンガラ ０．０７
１２．シリコーン被覆黒酸化鉄 ０．０１
１３．ＫＦ−６０２８（注５） ２．０
１４．スクワラン １．０
１５．オクタメチルシクロテトラシロキサン ７．０
１６．サラコス９９（注６） １０．０
１７．蔗糖脂肪酸エステル １．０
１８．キャンデリラワックス ４．０
１９．マイクロクリスタリンワックス ２．０
２０．酢酸トコフェロ−ル ０．０５
（注４）味の素社製
（注５）信越化学工業社製
（注６）日清製油社製
【００３７】
（製造方法）
Ａ：成分１〜７を７０℃にて均一に溶解する。
Ｂ：成分８〜２０を７０℃にて均一に混合する。
Ｃ：ＣにＢを添加し、乳化する。
Ｄ：７０℃にて容器に流し込み充填後放冷する。
【００３８】
以上のようにして得られた本発明の実施例８の固形状油中水型ファンデ−ションは、使用中の肌なじみがよく、保湿効果も高く、べたつきもなく、使用後高いハリ感が得られ、良好なメーキャップ効果をもち経時安定性が良好な優れた固形状油中水型ファンデ−ションであった。
【００３９】
実施例９ マッサ−ジ料
（成分） （％）
１．アクアデュウＳＰＡ−３０（注７） １．５
２．メチルセルロース ０．０２
３．プロピレングリコール ５．０
４．ジプロピレングリコール １０．０
５．グリセリン １０．０
６．ポリエチレングリコール４００ ２．０
７．乳酸ナトリウム ０．５
８．ＰＣＡソーダ １．３
９．防腐剤 適量
１０．精製水 残量
１１．ＡＢＩＬ ＥＭ９０（注８） ２．０
１２．ＫＦ−６０２８（注９） ０．７
１３．デカメチルシクロペンタシロキサン ８．０
１４．マカデミアンナッツ油 ２．０
１５．イソノナン酸イソトリデシル ５．０
１６．イソオクタン酸グリセリル ３．０
１７．有機変性ベントナイト １．０
１８．香料 適量
（注７）味の素社製
（注８）ゴールドシュミット社製
（注９）信越化学工業社製
【００４０】
（製造方法）
Ａ：成分１〜１０を室温にて均一に溶解する。
Ｂ：成分１１〜１８を室温にて均一に混合する。
Ｃ：ＢにＡを添加し、乳化する。
【００４１】
以上のようにして得られた本発明の実施例９のマッサ−ジ料は、使用中の肌なじみがよく、保湿効果も高く、べたつきもなく、使用後高いハリ感が得られ、経時安定性が良好な優れたマッサ−ジ料であった。
【００４２】
実施例１０ 目元用美容液
（成分） （％）
１．ＫＦ−６０２８（注１０） ２．０
２．デカメチルシクロペンタシロキサン １０．０
３．ジメチルポリシロキサン（５０ｍｍ２／ｓ） ６．０
４．シリコーン処理雲母チタン ２．０
５．酢酸トコフェロール ０．１
６．アクアデュウＳＰＡ−３０（注１１） １０．０
７．プロピレングリコール ５．０
８．ジプロピレングリコール １０．０
９．グリセリン ３．０
１０．ポリオキシエチレン（１０Ｅ．Ｏ．） ３．０
メチルグルコシド
１１．アスコルビン酸リン酸マグネシウム ２．０
１２．防腐剤 適量
１３．香料 適量
１４．精製水 残量
（注１０）信越化学工業社製
（注１１）味の素社製
【００４３】
（製造方法）
Ａ：成分６〜１４を室温にて均一に溶解する。
Ｂ：成分１〜５を室温にて均一に混合する。
Ｃ：ＢにＡを加え、乳化する。
【００４４】
以上のようにして得られた本発明の実施例１０の目元用美容液は、使用中の肌なじみがよく、保湿効果も高く、べたつきもなく、使用後高いハリ感が得られ、後肌に程よいメーキャップ効果があり経時安定性が良好な優れた目元用美容液であった。
【００４５】
【発明の効果】
以上詳述したように、本発明の油中水型乳化組成物は、特定のシリコーン化合物、シリコーン油を含む油剤、ポリアスパラギン酸塩、及び水を特定量含有することにより、使用時の感触と肌効果に優れ、経時安定性が良好なものである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water-in-oil emulsified composition particularly suitable for water-in-oil emulsified cosmetics, and more specifically, contains a specific silicone compound, an oil containing silicone oil, a polyaspartate, and a specific amount of water. In addition, the present invention relates to a water-in-oil emulsion composition that is excellent in feel and skin effect during use and has good temporal stability.
[0002]
[Prior art]
Conventionally, general emulsion compositions used as cosmetics are roughly classified into water-in-oil (W / O type) emulsion compositions and oil-in-water (O / W type) emulsion compositions.
Compared with oil-in-water emulsified composition, water-in-oil emulsified composition has high affinity for skin, prevents moisture transpiration, protects skin from drying, and gives treatment effect to skin, etc. Due to its wide sensory characteristics, it is applied to various cosmetics.
[0003]
Since the water-in-oil type emulsion composition is an oil agent in the outer phase, it may feel a relatively strong oil feeling when applied to the skin. Therefore, studies have been made on blending silicone oils that are refreshing to the touch, such as blending of silicone oil and organically modified clay mineral (for example, see Patent Document 1), blending of silicone oil and fatty acid metal salt ( For example, see Patent Document 2).
[0004]
In addition, in a water-in-oil emulsion composition, not only the oil agent for the outer phase, the surfactant for improving the emulsion stability, the gelling agent for the outer phase, etc., but also the water phase that is the inner phase is studied. Formulation of a water-swellable clay mineral and a nonionic surfactant (for example, see Patent Document 3), or blending of a specific active agent and an aqueous gelling reagent (for example, see Patent Document 4). Etc. have been proposed.
[0005]
[Patent Document 1]
Japanese Patent Publication No. 4-19269 [Patent Document 2]
JP-A-2-258711 [Patent Document 3]
JP 61-299591 A [Patent Document 4]
JP 6-506487 A [0006]
[Problems to be solved by the invention]
However, in the water-in-oil emulsion composition, the characteristic feeling of use and the use effect as described above can be obtained, but the firmness of the back skin (feeling of elasticity that the skin is moistened and stretched) is high. It was difficult to get things. That is, in a normal water-in-oil emulsion composition, when solid oils such as paste oil and wax used to suppress moisture transpiration and improve the firmness of the back skin are used frequently, these are present in the outer phase. The elongation during use became significantly heavy, and the properties were often limited to solid to hard cream. In addition, when a large amount of silicone oil is blended in the outer phase, there may be a problem of separation, bumps and crystal precipitation due to low compatibility.
[0007]
In addition, in a water-in-oil emulsion composition, since the phase inversion accompanying the volatilization of an aqueous component in use, such as an oil-in-water emulsion composition, and the familiarity due to the oil-based component, there is no sticking, the stoppage is slow, and the skin There were many cases where I felt unfamiliar and slippery. The blending effect of the above paste oil, solid oil, etc. is effective in the oil-in-water emulsion composition in which these are present in the inner phase, but is not effective in the water-in-oil emulsion composition present in the outer phase, It was difficult to obtain a water-in-oil emulsified composition with good fit and skin.
[0008]
[Means for Solving the Problems]
In view of the above situation, as a result of earnest research, the present inventor has a specific surface active agent and the like and polyaspartate, so that the skin feels well during use and the skin effect after use is very high. The inventors found that a water-in-oil emulsion composition having a firm feeling and a high moisturizing effect and having very good temporal stability was obtained, and the present invention was completed.
Here, polyasbalate is known to be a highly safe moisturizer with high affinity for the skin, excellent moisturizing ability and hygroscopicity, and its formulation in cosmetics has been proposed (special (Kaihei 6-157237, JP-A 2000-103727). However, because it is an electrolyte polymer with strong cohesiveness, it is difficult to stably blend it into an emulsifying system, and because it has a strong sticky stickiness when applied, its application and blending amount are limited. It was what was done.
In the present invention, the sticky feeling of the polyasbalamate is greatly reduced, and as described above, both the feeling in use and the skin effect are excellent, and the formulation stability is also excellent.
[0009]
That is, the present invention comprises the following components (a) to (d);
(A) Silicone compound represented by the following general formula (1) 0.3-5 mass%
R 1 a R 2 b R 3 c SiO (4-a-b-c) / 2 (1)
[Wherein, R 1 represents an alkyl group having 1 to 30 carbon atoms, an aryl group, an aralkyl group, a fluorine-substituted alkyl group, or —C m H 2m —O— (C 2 H 4 O) d (C 3 H 6 O) e R 4 is the same or different organic group selected from organic groups represented by R 4 , and R 2 is —C m H 2m —O— (C 2 H 4 O) f (C 3 H 6 O). The polyoxyalkylene group represented by g- R 5 , R 3 represents the following general formula (2)
[0010]
[Chemical 2]
R 4 is a hydrocarbon group having 4 to 30 carbon atoms or an organic group represented by R 6- (CO)-, R 5 is a hydrogen atom or a hydrocarbon having 1 to 30 carbon atoms A group or an organic group represented by R 6 — (CO) —, R 6 is a hydrocarbon group having 1 to 30 carbon atoms. a, b and c are 1.0 ≦ a ≦ 2.5, 0.001 ≦ b ≦ 1.5 and 0.001 ≦ c ≦ 1.5, respectively, d and e are 0 ≦ d ≦ 50, An integer of 0 ≦ e ≦ 50, f and g are integers of 2 ≦ f ≦ 200, 0 ≦ g ≦ 200, and f + g is 3 to 200, respectively. M is an integer of 0 ≦ m ≦ 15, h is an integer of 0 ≦ h ≦ 500, and n is an integer of 1 ≦ n ≦ 5. ]
(B) Oil agent containing silicone oil 6-50 mass%
(C) Polyaspartate 0.02 to 20% by mass
(D) 3-93 mass% of water phase components
It is a water-in-oil emulsion composition characterized by containing.
Furthermore, in the component (b) described above, the content of silicone oil in the oil agent is 30 to 97% by mass, which is a water-in-oil emulsion composition.
Furthermore, the water-in-oil emulsified composition is characterized in that the pH of the aqueous system containing the component (c) and the component (d) described above is 4.5 to 7.5.
Furthermore, in addition to the components described above, the water-in-oil emulsion composition further contains 0.1 to 10% by mass of inorganic powder as component (e).
Furthermore, the water-in-oil emulsion composition, wherein the component (e) is a glitter pigment.
Furthermore, it is a water-in-oil type emulsion composition characterized by being a water-in-oil type emulsion cosmetic.
Details will be described below.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The silicone compound of component (a) used in the present invention is represented by the general formula (1) described above and is described in JP-A No. 2001-39819. It has emulsion stability.
[0013]
The mass average molecular weight of the silicone compound represented by the general formula (1) is not particularly limited, but is preferably 500 to 200,000, and more preferably 1,000 to 100,000. As the emulsifier or emulsification aid for the water-in-oil emulsion composition, those having an HLB of 2.5 to 6 are preferably used. As a commercial item, KF-6028 (made by Shin-Etsu Chemical Co., Ltd.) etc. are mentioned.
[0014]
The content of the component (a) is 0.3 to 5% by mass (hereinafter simply referred to as “%”), more preferably 0.5 to 4%.
When the content of the component (a) is less than 0.3%, the emulsifying property and the emulsifying stability are not sufficient, and it becomes difficult to ensure the stability over time. Moreover, when it mixes exceeding 5%, a feeling of stickiness will arise at the time of use, or a feeling of use will deteriorate, such as elongation becoming heavy.
[0015]
The oil agent of component (b) used in the present invention forms the outer phase of the water-in-oil emulsion composition, and it is essential to contain a silicone oil in order to impart a refreshing feeling to the touch.
As the oil agent, hydrocarbons, oils and fats, waxes, regardless of the origin of animal oil, vegetable oil, synthetic oil and the like commonly used in cosmetics and the properties of solid oil, semi-solid oil, liquid oil, volatile oil, etc. Hardened oils, ester oils, fatty acids, higher alcohols, fluorinated oils, lanolin derivatives, oil-based gelling agents, lipophilic surfactants, oil-soluble UV absorbers, etc. can be blended. .
Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, montan wax, Fischer-Tropsch wax, olive oil, castor oil, jojoba oil, mink oil, Macadamian nut oil, oils such as owl, beeswax, lanolin, carnauba wax, candelilla wax, gay wax, jojoba oil and other waxes, cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, Glyceryl trioctanoate, polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, rosin acid pentaerythritol ester, neope dioctanoate Esters such as til glycol, cholesterol fatty acid ester, N-lauroyl-L-glutamate di (cholesteryl, behenyl, octyldodecyl), stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid, rosin acid, etc. Higher fatty acids, higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, and behenyl alcohol, fluorinated oils such as perfluoropolyether, perfluorodecane, and perfluorooctane, lanolin, lanolin acetate Lanolin derivatives such as lanolin fatty acid isopropyl, lanolin alcohol, dextrin fatty acid ester, sucrose fatty acid ester, starch fatty acid ester, 12-hydroxy steari Oil-soluble gelling agents such as acid and calcium stearate, oil-soluble UV absorbers such as ethyl aminobenzoate, methoxycinnamic acid-2-ethylhexyl, 4-tert-butyl-4'-methoxydibenzoylmethane, oxybenzone, etc. These can be used, and these can be used alone or in combination.
[0016]
Silicone oil is formulated for the purpose of imparting the function as an oil agent and a tactile refreshing feeling to the skin. When silicone oil is not blended, the spread during use becomes heavy or oily. A good feeling of use cannot be obtained.
The structure of the silicone oil is not particularly limited, and any of linear, cyclic, and crosslinked types may be used.
Specific examples include low to high viscosity silicone oils such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, dimethylpolysiloxane / methylphenylpolysiloxane copolymer, octamethylcyclotetrasiloxane, deca Cyclic silicone oils such as methylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethyltetrahydrogencyclotetrasiloxane, tetramethyltetraphenylcyclotetrasiloxane, higher alkoxy modified silicones such as stearoxy silicone, higher fatty acid modified silicones, amino modified Examples thereof include silicone and fluorine-modified silicone, and one or two of these can be appropriately selected and used.
Among these, cyclic silicone oils such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane are preferable from the viewpoint that a refreshing feel can be easily obtained.
[0017]
Content of the component (b) used for this invention is 6 to 50%, Preferably it is 7 to 35%. If it is less than 6%, the external phase ratio becomes low and stable emulsification becomes difficult, and if it exceeds 50%, the demerit on the sensory side becomes large, for example, the feeling of use is oily and the stickiness becomes poor.
Moreover, the content of the silicone oil in the oil is not particularly limited, but is preferably 30 to 97%, more preferably 60 to 96%.
[0018]
The polyaspartate of component (c) used in the present invention improves skin familiarity during use, forms a protective film on the skin after use, gives a high moisturizing effect, and gives skin firmness. Used for.
The polyaspartate is obtained by polymerizing L-aspartic acid, D-aspartic acid, or a mixture thereof by α or β bonds. The average molecular weight is not particularly limited, but is preferably 1,000 to 100,000, and more preferably 5,000 to 50,000 from the viewpoints of feeling of use and skin effect.
Examples of the salt include metal salts such as sodium, potassium and magnesium, alkanolamine salts such as ethanolamine salts, diethanolamine salts and triethanolamine salts, basic amino acid salts and the like.
The neutralization degree of the salt is preferably such that the pH of the aqueous system containing the component (c) and the component (d) described later is 4.5 to 7.5. When the pH is less than 4.5 or more than 7.5, an acid odor or stuffy odor may occur due to deterioration of the blended components.
As a commercial item, Aqua Dew SPA-30 (manufactured by Ajinomoto Co., Inc.), which is a 30% aqueous solution of sodium polyaspartate, can be mentioned.
[0019]
Content of a component (c) is 0.02 to 20%, More preferably, it is 0.1 to 15%.
If the content of the component (c) is less than 0.02%, the dosage form may become unstable, resulting in coalescence of emulsion droplets over time or a decrease in viscosity. Moisturizing effect and firmness are not enough. If it exceeds 20%, stickiness will appear and no further blending effect can be expected.
[0020]
The aqueous phase component of the component (d) used in the present invention refers to water, water-soluble substances, and general aqueous dispersions dispersed in an oil phase that is a continuous phase as a discontinuous phase. Therefore, among them, water, hydrophilic surfactants, lower alcohols, polyols, electrolytes, polymer substances, moisturizing ingredients, cosmetic ingredients such as water-soluble vitamins, preservatives, ultraviolet absorbers, antioxidants, Pigments and the like are included. If necessary, an oily substance can be added to the aqueous phase component by emulsification or solubilization.
[0021]
The content of component (d) is 3 to 93%, more preferably 10 to 90%. If it is less than 3%, the component (c) cannot be sufficiently dissolved, and the feeling of use and the freshness are impaired. Moreover, when it mix | blends exceeding 93%, an internal phase ratio will become high too much and it will become difficult to emulsify.
[0022]
In the water-in-oil emulsified composition of the present invention, in addition to the essential components described above, the addition of inorganic powder as component (e) further reduces the sticky feeling from use to use after use. It becomes favorable and preferable.
As the inorganic powder, the shape and particle diameter are not particularly limited, and any shape such as a spherical shape, a plate shape, an irregular shape, or a particle size distribution can be used, and those generally used for cosmetics are used. can do.
For example, specifically, titanium oxide, conger, ultramarine blue, bengara, yellow iron oxide, black iron oxide, titanium oxide, zinc oxide, aluminum oxide, silicon dioxide, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, chromium oxide , Chromium hydroxide, carbon black, aluminum silicate, magnesium silicate, magnesium aluminum silicate, mica, synthetic mica, synthetic sericite, sericite, talc, kaolin, silicon carbide, barium sulfate, bentonite, smectite, boron nitride, etc. Body composition / colored powders, luminescent powders such as bismuth oxychloride, iron oxide mica titanium, organic pigment-treated mica titanium, aluminum powder, fine particle titanium oxide coated mica titanium, fine particle zinc oxide coated mica titanium, barium sulfate coating Mica titanium, titanium oxide Yes silicon dioxide, the composite powder such as zinc oxide-containing silicon dioxide and the like, can be used in combination thereof to one or more kinds. In addition, these powders are those that have been surface-treated by a known method using fluorine compounds, silicone oils, metal soaps, waxes, surfactants, fats and oils, organic powders or different types of powders. It may be a composite with inorganic powder.
Among these inorganic powders, the use of a luster pigment such as mica titanium or iron oxide-coated mica is more preferable because it has a beautiful appearance and can provide a make-up effect depending on the blending amount.
[0023]
Although content of the component (e) in this invention is not specifically limited, Preferably it is 0.1 to 10%, More preferably, it is 0.3 to 5%.
[0024]
In the present invention, in addition to the above components, further components used in normal cosmetics, for example, surfactants, powders other than inorganic powders, ultraviolet absorbers, antioxidants, bactericides, antiseptics, perfumes, Colorants, cosmetic ingredients, and the like can be used as long as the effects of the present invention are not impaired.
The water-in-oil emulsion composition of the present invention can be obtained by a normal production method, and can be obtained by, for example, a dispersion emulsification method in which an aqueous phase is added to an oil phase and emulsified.
Further, the water-in-oil emulsion composition of the present invention is preferably used as a water-in-oil emulsion cosmetic containing the above-mentioned components. However, a water-in-oil emulsion is prepared in advance and further into the inner water phase. Oil-in-oil-in-oil (O / W / O type) emulsified cosmetics by emulsifying oil, or water-in-oil-in-water type (W / O / W type) by dispersing the water-in-oil emulsion in water It may be an emulsified cosmetic.
[0025]
The water-in-oil emulsified composition of the present invention comprises skin care cosmetics such as emulsions, creams, massages, hand creams, body creams, sunscreens, makeup makeups such as foundations, makeup bases, and control materials. It can be used as a hair cosmetic such as a hair preparation, hair emulsion, hair cream, etc., and its usage includes a method of using by hand, a method of using it by impregnating a nonwoven fabric and the like.
[0026]
【Example】
Next, although an Example is given and this invention is demonstrated further in detail, this invention is not restrict | limited at all by these.
[0027]
Examples 1 to 7 and Comparative Examples 1 to 5 Water-in-oil emulsified cosmetics Water-in-oil emulsified cosmetics shown in Table 1 below were produced and evaluated for stability over time and feeling of use.
[0028]
[Table 1]
(Note 1) Ajinomoto Co. (Note 2) Shin-Etsu Chemical Co., Ltd. (Note 3) Shin-Etsu Chemical Co., Ltd. [0030]
(Production method)
A: Components 1 to 10 are uniformly dissolved at 70 ° C.
B: Components 11 to 19 are mixed uniformly at 70 ° C.
C: A is added to B and emulsified.
[0031]
(Evaluation methods)
1. Stability over time Each cosmetic material in Table 1 was allowed to stand at 5 ° C. and 50 ° C. for 1 month, visually observed for changes in appearance, and judged according to the following criteria.
(Criteria) (Judgment)
No change in appearance: ○
Either 50 ° C. or 5 ° C. tends to separate: Δ
Either 50 ° C, 5 ° C or both are clearly separated: x
[0032]
2. Usability evaluation Examples 1 to 7 and Comparative Examples 1 to 5 were evaluated according to the following criteria by having 10 female specialist panels evaluate the following items.
[0033]
(Evaluation item)
・ Do you feel good skin familiarity when using (+) or not (-)?
・ Do you feel that there is no stickiness from use to use (+) or not (-)?
・ Do you feel the moisturizing effect is high after use (+) or not (-)?
・ Do you feel that your skin feels firmer after use (+) or not (-)?
[0034]
(Criteria) (Judgment)
Eight or more people made +: ◎
6 to 7 people made +: ○
3 to 5 people made +: △
Less than 2 people made +: ×
The results obtained by the above evaluation methods are also shown in Table 1.
[0035]
As is apparent from the evaluation results, Examples 1 to 7 according to the present invention have good temporal stability and good usability. On the other hand, in the comparative example, what satisfied all was not obtained.
[0036]
Example 8 Solid water-in-oil type foundation (component) (%)
1. Aqua Dew SPA-30 (Note 4) 1.0
2. Ethanol 5.0
3. 1,3-butylene glycol 5.0
4). Sodium citrate 0.5
5. Perfume appropriate amount 6. 6. Purified water remaining amount Preservative appropriate amount 8. Barium sulfate coated mica titanium 1.5
9. Silicone-coated titanium oxide 7.5
10. Silicone-coated yellow iron oxide 0.4
11. Silicone coated bengara 0.07
12 Silicone-coated black iron oxide 0.01
13. KF-6028 (Note 5) 2.0
14 Squalane 1.0
15. Octamethylcyclotetrasiloxane 7.0
16. Saracos 99 (Note 6) 10.0
17. Sucrose fatty acid ester 1.0
18. Candelilla wax 4.0
19. Microcrystalline wax 2.0
20. Tocopherol acetate 0.05
(Note 4) Ajinomoto Co. (Note 5) Shin-Etsu Chemical Co., Ltd. (Note 6) Nisshin Oil Industries Co., Ltd. [0037]
(Production method)
A: Components 1 to 7 are uniformly dissolved at 70 ° C.
B: Components 8 to 20 are mixed uniformly at 70 ° C.
C: B is added to C and emulsified.
D: Pour into a container at 70 ° C. and allow to cool after filling.
[0038]
The solid water-in-oil type foundation of Example 8 of the present invention obtained as described above has good skin familiarity during use, high moisturizing effect, no stickiness, and high elasticity after use. It was an excellent solid water-in-oil type foundation having a good makeup effect and good stability over time.
[0039]
Example 9 Massage Material (Ingredient) (%)
1. Aqua Dew SPA-30 (Note 7) 1.5
2. Methylcellulose 0.02
3. Propylene glycol 5.0
4). Dipropylene glycol 10.0
5. Glycerin 10.0
6). Polyethylene glycol 400 2.0
7). Sodium lactate 0.5
8). PCA soda 1.3
9. Preservative appropriate amount10. Purified water remaining amount 11. ABIL EM90 (Note 8) 2.0
12 KF-6028 (Note 9) 0.7
13. Decamethylcyclopentasiloxane 8.0
14 Macadamia nut oil 2.0
15. Isotridecyl isononanoate 5.0
16. Glyceryl isooctanoate 3.0
17. Organically modified bentonite 1.0
18. Perfume Appropriate amount (Note 7) Ajinomoto Co. (Note 8) Gold Schmidt (Note 9) Shin-Etsu Chemical Co., Ltd. [0040]
(Production method)
A: Components 1 to 10 are uniformly dissolved at room temperature.
B: Components 11 to 18 are mixed uniformly at room temperature.
C: A is added to B and emulsified.
[0041]
The massage material of Example 9 of the present invention obtained as described above has good skin familiarity during use, high moisturizing effect, no stickiness, high elasticity after use, and stability over time. Was a good and excellent massage material.
[0042]
Example 10 Eye lotion (component) (%)
1. KF-6028 (Note 10) 2.0
2. Decamethylcyclopentasiloxane 10.0
3. Dimethylpolysiloxane (50 mm 2 / s) 6.0
4). Silicone-treated mica titanium 2.0
5. Tocopherol acetate 0.1
6). Aqua Dew SPA-30 (Note 11) 10.0
7). Propylene glycol 5.0
8). Dipropylene glycol 10.0
9. Glycerin 3.0
10. Polyoxyethylene (10E.O.) 3.0
Methyl glucoside11. Magnesium ascorbate phosphate 2.0
12 Preservative appropriate amount13. Perfume appropriate amount14. Purified water remaining amount (Note 10) Shin-Etsu Chemical Co., Ltd. (Note 11) Ajinomoto Co., Inc. [0043]
(Production method)
A: Components 6 to 14 are uniformly dissolved at room temperature.
B: Components 1 to 5 are mixed uniformly at room temperature.
C: A is added to B and emulsified.
[0044]
The eye lotion of Example 10 of the present invention obtained as described above is well-familiar with the skin during use, has a high moisturizing effect, is not sticky, has a high elasticity after use, and is applied to the back skin. It was an excellent eye lotion with a moderate makeup effect and good stability over time.
[0045]
【The invention's effect】
As described above in detail, the water-in-oil emulsion composition of the present invention contains a specific silicone compound, an oil containing silicone oil, a polyaspartate, and a specific amount of water, so Excellent skin effect and good stability over time.
Claims (6)
（ａ）下記一般式（１）で表されるシリコーン化合物 ０．３〜５質量％
Ｒ１ ａＲ２ ｂＲ３ ｃＳｉＯ（４−ａ−ｂ−ｃ）／２ （１）
［式中、Ｒ１は炭素数１〜３０のアルキル基、アリール基、アラルキル基、フッ素置換アルキル基、あるいは、−ＣｍＨ２ｍ−Ｏ−（Ｃ２Ｈ４Ｏ）ｄ（Ｃ３Ｈ６Ｏ）ｅＲ４で表される有機基から選択される同種又は異種の有機基であり、Ｒ２は−ＣｍＨ２ｍ−Ｏ−（Ｃ２Ｈ４Ｏ）ｆ（Ｃ３Ｈ６Ｏ）ｇ−Ｒ５で表されるポリオキシアルキレン基、Ｒ３は下記一般式（２）
（ｂ）シリコーン油を含む油剤 ６〜５０質量％
（ｃ）ポリアスパラギン酸塩 ０．０２〜２０質量％
（ｄ）水相成分 ３〜９３質量％
を含有することを特徴とする油中水型乳化組成物。The following components (a) to (d);
(A) Silicone compound represented by the following general formula (1) 0.3-5 mass%
R 1 a R 2 b R 3 c SiO (4-a-b-c) / 2 (1)
[Wherein, R 1 represents an alkyl group having 1 to 30 carbon atoms, an aryl group, an aralkyl group, a fluorine-substituted alkyl group, or —C m H 2m —O— (C 2 H 4 O) d (C 3 H 6 O) e R 4 is the same or different organic group selected from organic groups represented by R 4 , and R 2 is —C m H 2m —O— (C 2 H 4 O) f (C 3 H 6 O). The polyoxyalkylene group represented by g- R 5 , R 3 represents the following general formula (2)
(B) Oil agent containing silicone oil 6-50 mass%
(C) Polyaspartate 0.02 to 20% by mass
(D) 3-93 mass% of water phase components
A water-in-oil emulsified composition comprising:
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