JP3671013B2 - COMPOSITE POWDER, MAKEUP COSMETICS COMPRISING THE SAME, AND METHOD FOR PRODUCING COMPOSITE POWDER - Google Patents
COMPOSITE POWDER, MAKEUP COSMETICS COMPRISING THE SAME, AND METHOD FOR PRODUCING COMPOSITE POWDER Download PDFInfo
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Description
【0001】
【発明の属する技術分野】
本発明は複合粉末、それを配合したメークアップ化粧料、及び複合粉末の製造方法、特に肌の凹凸、色彩的な欠点の補正及び自然な仕上り、及び仕上がりの持続性の改良に関する。
【0002】
【従来の技術】
従来、素肌の毛穴や小じわなどの肌の物理的な凹凸を補正する方法として、球状粉末の拡散反射によるボカシ効果が用いられてきた。
特に最近ではこのような効果を得る目的で、タルク、マイカ、アルミナ、硫酸バリウム等の薄片状粉末の表面上に微小な球状樹脂粉末を均一に複合化した複合粉末や、球状シリカ粒子の表面に酸化チタン層とシリカ層を設けて光の屈折率を高めることにより光拡散性を向上させ、ボカシ効果を高めた複合粉体の開発も行われている。
【0003】
一方、素肌のくすみやしみ、そばかす、赤味、目の回りのくま等に例示される色彩的な欠点を補正する方法としては、主に屈折率が2.69の強い隠蔽性及び着色力がある酸化チタン顔料が用いられてきた。
また、このように色彩的な欠点を補正する方法としては、粉末の分光特性による補正が有効であることも知られている。
【0004】
【発明が解決しようとする課題】
しかしながら、球状粉末の拡散反射によるボカシ効果では毛穴や小じわなどの肌の凹凸を補正することができ、化粧肌の均一な仕上りの観点からはやや満足されているものの、肌の色彩的な欠点について十分な補正を与えるものではない。
【0005】
一方、酸化チタン顔料を使用することにより、肌の色彩的な欠点を隠蔽して見えなくすることは可能であるが、その質感は光沢のないマットな状態であり、また高い屈折率による強い光散乱性から、ファンデーションの仕上がりが青白くなり、決して自然な仕上がりを与えるものではなかった。さらに、透明感が感じられず実際の素肌とはかけ離れた異質な印象しか与えなかった。
この問題を解決するために、酸化チタンに酸化鉄をドーピングし、黄橙色に着色することで肌に自然に馴染んだ仕上りを目指した粉末が開発(特開平7―3181)されているが、仕上りを自然な印象に見せる効果に一定の寄与はするものの、問題を十分に解決したものとはいえなかった。
【0006】
さらには、実際の素肌に近い仕上りを得るために皮膚組織の構造に着目した粉体開発も行われているが、複雑な皮膚組織を模倣することには限界があり、自然な仕上りが得られないばかりか、隠蔽性も低いために肌のくすみや色むら等の色彩的な欠点をカバーしきれず、十分な効果を期待できないのが現状である。
そして、肌の色彩的な欠点を補正するためには粉末の分光特性による補正が自然に補正する方法として最も有効であることが知られており、実際に干渉系雲母チタンによるこのような補正がメークアップ化粧料においてなされている。しかしながら、雲母チタンは表面反射が強いためにチカチカしたような見え方に化粧肌が仕上がり、毛穴や小じわなどの肌の凹凸も目立つことから自然で美しい仕上りを得ることは大変難しかった。
【0007】
また、メークアップ化粧料の処方によっては経時により分泌される皮脂によりテカリや化粧くずれを生じ、仕上がりの持続性に欠けるといった問題があった。本発明は前記従来技術に鑑みなされたものであり、その目的は化粧料に配合することにより肌の凹凸や色彩的な欠点を補正すると共に自然な仕上りを与え、さらに仕上がりの持続性を有する複合粉末、それを配合したメークアップ化粧料、及び複合粉末の製造方法を提供することにある。
【0008】
【課題を解決するための手段】
本発明者等は上記課題に鑑み鋭意検討した結果、干渉色を発現する薄片状基板粒子の表面に突起状の酸化亜鉛粒子を一定量付着した複合粉体をメークアップ化粧料に配合することにより、肌の凹凸及び肌の色彩的な欠点を補正すると共に、素肌の光学特性に近似した透明感のある自然な仕上りが得られることを見出し、本発明を完成するに至った。
すなわち、本発明の複合粉末は、薄片状基板粉末と、該基板粉末の表面に突起状に付着した酸化亜鉛粒子を含むことを特徴とする。
【0009】
また、前記粉末において、前記酸化亜鉛粒子は細長い針状であることが好適である。
また、前記粉末において、前記基板粉末の表面に付着した酸化亜鉛粒子は、略均一な粒子径を有することが好適である。
また、前記粉末において、前記酸化亜鉛粒子はその粒子間隔が略均一であるように前記基板粉末の表面に付着していることが好適である。
【0010】
また、前記粉末において、干渉色を発現する基板粉末としては雲母チタンが例示される。
また、前記粉末において、酸化亜鉛粒子の付着率が前記基板に対して15〜100質量%であることが好適である。
また、本発明のメークアップ化粧料は、前記複合粉末を配合したことを特徴とする。
また、本発明の複合粉末の製造方法は、薄片状基板粉末のスラリー溶液に種粒子を共存させ、該溶液に亜鉛イオン溶液とアルカリ水溶液を添加して反応させることにより、前記種粒子を核として酸化亜鉛を結晶成長させ、生成した酸化亜鉛粒子を前記基板粉末の表面に付着させることを特徴とする。
【0011】
【発明の実施の形態】
以下、本発明の好適な実施形態について説明する。
本発明の製造方法により得られる粉末は、薄片状粉末を基板として、その表面に突起状の酸化亜鉛粒子が一定量付着した複合粉末である。この粉末をメークアップ化粧料に配合すれば、薄片状粉末の表面に突起状に付着した酸化亜鉛粒子の光拡散性により肌の凹凸が均一に補正され、自然で美しい仕上がりが得られる。さらに、酸化亜鉛粒子が経時によって分泌する皮脂を吸収し、時間が経ってもこのような光学特性が発揮され、皮脂によるテカリ感や化粧くずれを生じることなく仕上がりを持続させることができる。
【0012】
また、基板粉末の表面に酸化亜鉛粒子が突起状に付着しているので、粉末と肌との接点が少なくなって使用感触が軽くなり、これを化粧料に配合して使用する際には、板状であるためフィット感に優れながら、且つなめらかに肌へ均一に広がるため、使用感触の点においても好ましい効果が得られる。
上記した「突起状」の酸化亜鉛粒子の形状としては、使用する基板粉末や製造条件により種々の形状のものが得られるが、通常は例えば図14に示した様に、細長い針状のものが得られる。
【0013】
このような複合粉末の基板として使用される干渉色を発現する薄片状粉末としては、雲母等が例示され、平均粒子径が1〜150μmのものであれば特に限定されない。
また、酸化亜鉛の付着率が前記基板に対して15〜100質量%であることが好適である。
【0014】
さらに、雲母チタン等の干渉色を発現する薄片状粉末を基板として、本発明の方法によりその表面に突起状の酸化亜鉛粒子を一定量付着して得られた複合粉末は、これをメークアップ化粧料に配合することにより、薄片状粉末の干渉色による分光特性とその表面に突起状に付着した酸化亜鉛粒子の光拡散性により肌の凹凸及び色彩的な欠点を均一に補正することができる。
さらに、突起状に酸化亜鉛粒子を付着することで粉末の拡散反射特性が向上するため、雲母チタン等に特有の強い表面反射光を低減し、また酸化亜鉛の屈折率(2.05)がオイルの屈折率(1.4〜1.5)に比して高いため、乳化基剤に配合したときにも適度なツヤによる自然で美しい仕上がりが可能となる。
【0015】
すなわち、雲母チタン等の干渉色を発現する層状構造粉末の干渉光は青色、黄色、緑色、赤色、紫色などがあり、肌に対応した好ましい干渉色を選択することで肌の色彩的な欠点を補正しつつ、雲母チタン等に特有のチカチカ感を生じずに自然で美しい仕上がりが可能となる。
例えば、くすんだ肌や目の回りのくまなどはメラニンやうっ血により吸収された黄色〜赤色の光が色彩的に不足しているため赤〜橙色の反射干渉光により補正することで肌を健康的に明るく透明感のある仕上がりにすることができる。
【0016】
また、最近増えた敏感肌やアトピー肌、ニキビ肌等の赤味の強い肌には血液中のヘモグロビン色素に吸収され不足している緑色の反射干渉光により赤味をやわらげた自然な仕上がりに補正することができる。また、しみやそばかす等の色ムラの多い肌の場合には濃いメラニン色素により吸収された黄色の反射干渉光を補正することによって肌を自然に均一化した美しい化粧肌が得られる。
干渉色を発現する層状構造粉末の基板として使用される薄片状粉末としては、雲母チタン、低次酸化チタン被覆雲母、酸化鉄被覆雲母チタン等が例示され、平均粒子径が1〜150μmのものてあれば特に限定されない。
【0017】
また、干渉色を発現する基板表面に付着される硫酸バリウムの付着率は、基板に対して15〜100質量%であることが好適である。酸化亜鉛の付着率が15質量%以下では薄片状基板粉末の表面反射を抑えることができず、チカチカしたような特性が見られ好ましくない。さらには経時での皮脂の吸着が悪く、テカリ感が化粧肌に出てくる。付着率が100質量%を超える場合には、粉末にざらつき感が出て使用感触が極端に悪くなり、さらには薄片状粉末の干渉色が過度に隠蔽されて化粧肌の色彩的な補正に支障をきたすなど化粧効果が極端に悪化する。
【0018】
突起状の粒子が付着した薄片状粉末を得るために、本発明の製造方法では粉末製造時に種粒子を使用することを特徴としている。すなわち、亜鉛イオン溶液とアルカリ水溶液の混合による反応時に、金属酸化物等の微粒子を共存させることでそれが酸化亜鉛の結晶成長の核となり、種粒子から酸化亜鉛が結晶成長して形成された粒子が基板粉末上に均一に付着した構造が得られる。以下、本発明に係る複合粉末の製造方法を説明する。
【0019】
複合粉末の原料として使用する亜鉛化合物は、水、アルコールなどの溶媒中で亜鉛イオンを生じるものであればよく、その種類は特に限定されない。反応時には、亜鉛化合物を溶媒に溶解して得た亜鉛イオン溶液をあらかじめ調整して使用する。
このような亜鉛化合物としては塩化亜鉛、硫酸亜鉛、硝酸亜鉛、リン酸亜鉛、ハロゲン化亜鉛等の無機塩類や、ギ酸亜鉛、酢酸亜鉛、プロピオン酸亜鉛、乳酸亜鉛、シュウ酸亜鉛、クエン酸亜鉛等の有機塩類が例示される。このうち、副生成物の処理が容易であることから、塩化亜鉛、酢酸亜鉛が好適である。
【0020】
また、アルカリ水溶液の原料としては、水酸化リチウム、水酸化ナトリウム、水酸化カリウム、炭酸リチウム、炭酸ナトリウム、炭酸カリウム、炭酸水素ナトリウム、炭酸水素カリウム、アンモニア、炭酸アンモニウム等が例示される。このうち、特に水酸化ナトリウムが好適である。
亜鉛イオン溶液、アルカリ水溶液の濃度は、ともに通常0.01mmol/L〜1mol/Lに調製される。好ましくは、1mmol/L〜100mmol/Lの範囲である。濃度がこの範囲より小さい場合、工業的製法として効率が悪くなる。また、濃度がこの範囲より大きい場合には、過飽和度が大きいために核発生が多くなり、微少な粒子が多数発生し、凝集等が起こり、化粧料用途には使用しにくくなる。
【0021】
また、亜鉛イオン溶液及びアルカリ水溶液を反応時に経時的に混和すれば、反応溶液中では実質調製時より低い濃度で反応が進行することになる。
反応時に共存させる種粒子としては、酸化チタン、酸化亜鉛、アルミナ、水酸化アルミニウム、シリカ、酸化鉄等の粒子が使用できる。これらの粒子径は0.02μm〜2μm、好ましくは0.1μm〜0.5μmであり、これらの微粒子が酸化亜鉛の結晶成長の核となり、基板粉末表面に対する酸化亜鉛の均一な付着を促すことができる。
【0022】
また、粒子の結晶成長の制御を目的として、金属イオンを添加することができる。粒子の結晶成長を制御することで、光学的な拡散反射を増強したり、或いは角度依存的な光沢感の変化を付与することができる。
金属イオンとしては、リチウムイオン、ナトリウムイオン、カリウムイオン、マグネシウムイオン、カルシウムイオン、アルミニウムイオンが例示される。これらは、単独或いは2種以上組合わせて使用される。それぞれの金属イオンは、該当する金属を含む塩化合物の水溶液またはアルコール溶液として与えられる。
【0023】
該金属イオンは、亜鉛イオンに対して、0.001〜10当量の範囲で添加される。0.001当量未満では、形態的な付着構造の制御が困難となる。また、10当量を超えると、生成する酸化亜鉛が凝集を起こしてしまい、基板への均一な付着ができず凝集状態となり使用感を低下させる等のため、化粧料用途として使用できなくなる。
【0024】
金属イオンを与えるための金属塩としては、例えば水酸化リチウム、塩化リチウム、硝酸リチウム、炭酸リチウム、酢酸リチウム等のリチウム塩;水酸化ナトリウム、塩化ナトリウム、硝酸ナトリウム、炭酸ナトリウム、酢酸ナトリウム等のナトリウム塩;水酸化カリウム、塩化カリウム、硝酸カリウム、炭酸カリウム、酢酸カリウム等のカリウム塩;水酸化マグネシウム、塩化マグネシウム、硝酸マグネシウム、炭酸マグネシウム、酢酸マグネシウム等のマグネシウム塩;水酸化カルシウム、塩化カルシウム、硝酸カルシウム、炭酸カルシウム、酢酸カルシウム等のカルシウム塩;水酸化アルミニウム、塩化アルミニウム、硝酸アルミニウム、炭酸アルミニウム、酢酸アルミニウム等のアルミニウム塩が使用される。また、これらの金属イオンの他、同じく粒子の結晶成長の制御を目的として、酢酸、グルタミン酸、アスパラギン酸等の酸を反応溶液に共存させることもできる。
【0025】
上述のように調製した亜鉛イオン溶液とアルカリイオン水溶液を、種粒子、及び必要に応じて添加した金属イオンや酸を含む基板粉末のスラリー水溶液に添加して反応させる。反応終了後の溶液について濾過水洗、粉砕等の処理を行い本発明の複合粉末が得られる。
以下に、本発明の製造方法の代表的な実施形態を示す。
【0026】
<実施形態1>
雲母チタンのスラリー水溶液に、種粒子として使用する酸化鉄微粒子を超音波分散した溶液を添加して攪拌混合した後、上述のように調製した塩化亜鉛水溶液とアルカリ水溶液を同時に添加する。この際亜鉛イオンに対するアルカリイオンのモル比は、1/2〜2/1の範囲になるようにする。反応温度としては、10〜100℃が好適であり、25〜100℃がさらに好適である。
【0027】
<実施形態2>
反応容器に200mlのイオン交換水と基板となる雲母チタン50gを入れ、攪拌装置および2台のマイクロチューブポンプを接続したpHコントローラーをセットする。2台のマイクロチューブポンプを150mlのイオン交換水に37.65gの塩化亜鉛を溶解した水溶液と450mlのイオン交換水に25gの水酸化ナトリウムを溶解した水溶液にそれぞれ接続し、反応容器に滴下できるように固定する。
常圧常温で攪拌を行いながら、2種の水溶液の滴下量を調節しながら約20分間滴下を行い反応させる。得られた生成物を濾過し、水洗、遠心分離を3回づつ繰り返し、オーブンで80℃、15時間乾燥した後パーソナルミルで粉砕する。得られた粉末を100メッシュのふるいに通し目的物を得る。
【0028】
本発明の複合粉末をメークアップ化粧料に配合する場合、配合量としては特に限定されないが、例えば体質顔料として多量配合することにより肌の凹凸補正効果が得られる。
但し、基板として雲母チタン等の干渉色を有する顔料を使用する場合、くすみやしみ・そばかす、赤味、目の回りのくまなど肌の色彩的な欠点を補正する効果を持たせるためには化粧料に対して1質量%以上配合することが好ましい。また20質量%以上配合すると、干渉光が強調されすぎて不自然な仕上がりになるなどの影響があり好ましくない。また上述の光学的な色彩補正や新しい質感等を考慮した場合には、3質量%以上が化粧効果を付与できるためさらに好ましい。
【0029】
また、本発明の複合粉末に対して、その効果を損なわない範囲で、通常の化粧料顔料に用いられる処理剤、例えばシリコーン、金属セッケン、レシチン、アミノ酸、コラーゲン、フッ素化合物等で表面処理したものを用いることもできる。本発明の化粧料には他の粉末成分として、酸化チタン、酸化亜鉛、ベンガラ、黄酸化鉄、黒酸化鉄、群青、酸化セリウム、タルク、マイカ、セリサイト、カオリン、ベントナイト、クレー、ケイ酸、無水ケイ酸、ケイ酸マグネシウム、ステアリン酸亜鉛、含フッ素金雲母、合成タルク、硫酸バリウム、硫酸マグネシウム、硫酸カルシウム、チッ化ホウ素、オキシ塩化ビスマス、アルミナ、酸化ジルコニウム、酸化マグネシウム、酸化クロム、カラミン、炭酸マグネシウムおよびこれらの複合体等の無機粉体;シリコーン粉末、シリコーン弾性粉末、ポリウレタン粉末、セルロース粉末、ナイロン粉末、PMMA粉末、スターチ、ポリエチレン粉末およびこれらの複合体等の有機粉体を1種または2種以上必要に応じて配合することができる。
【0030】
また、本発明の化粧料には油性成分として、流動パラフィン、スクワラン、エステル油、ジグリセライド、トリグリセライド、パーフルオロポリエーテル、ワセリン、ラノリン、セレシン、カルナバロウ、固型パラフィン、脂肪酸、多価アルコール、シリコーン樹脂、フッ素樹脂、アクリル樹脂、ビニルピロリド等を1種または2種以上必要に応じて配合することができる。
また、本発明の化粧料には、色素、pH調整剤、保湿剤、増粘剤、界面活性剤、分散剤、安定化剤、着色剤、防腐剤、酸化防止剤、紫外線吸収剤、香料等も本発明の目的を達する範囲内で適宜配合することができる。
【0031】
本発明のメークアップ化粧料は通常の方法で製造され、剤型としては乳化ファンデーション、パウダーファンデーション、油性ファンデーション、スティックファンデーション、アイシャドウ、チークカラー、ボディーパウダー、パヒュームパウダー、ベビーパウダー、フェースパウダー等が例示される。
【0032】
【実施例】
以下、実施例により本発明をさらに詳細に説明する。なお、本発明はこれによって限定されるものではなく、化粧料の実施例における各成分の配合量は化粧料全量に対する質量%で表す。
本発明の複合粉末を各種条件で製造した(実施例1〜16)。
【0033】
実施例1
容量3000mlの丸底セパラブルフラスコに、基板として用いる粒子径約12μmの赤色干渉系雲母チタン50gを測り、イオン交換水400mlを加えて攪拌混合した。別途、種粒子として使用する粒子径約0.3μmの黄酸化鉄粒子0.5g(雲母チタンに対して1質量%)を100mlの水溶液中で超音波分散し調整した後、前記雲母チタンのスラリー水溶液に添加、攪拌混合した。雲母チタンのスラリー水溶液の液温を60℃とした後、184mmol/L−塩化亜鉛水溶液150mlと250mmol/L−水酸化ナトリウム水溶液500mlを別々に添加した。滴下と同時に白色の酸化亜鉛が生成・析出し、2時間反応を行った。
【0034】
反応溶液を室温まで冷却して、得られた固形生成物を沈降させた後濾過水洗をして塩を除去し、120℃で12時間乾燥した。乾燥後、粉砕、ふるい処理を施し実施例1の赤色干渉系白色粉末を得た。その粉末表面のSEM写真を図1に示す。また、得られた粉末の酸化亜鉛付着量は、基板の雲母チタンに対して45質量%であった。
【0035】
実施例2〜4
容量3000mlの丸底セパラブルフラスコに、基板として用いる粒子径約12μmの各種干渉系雲母チタン50g(実施例2:黄色干渉系、実施例3:緑色干渉系、実施例4:青色干渉系)を測り、イオン交換水400mlを加えて攪拌混合した。別途、種粒子として使用する粒子径約0.3μmの黄酸化鉄粒子0.5g(雲母チタンに対して1質量%)を100mlの水溶液中で超音波分散し調整した後、前記雲母チタンのスラリー水溶液に添加、攪拌混合した。雲母チタンのスラリー水溶液の液温を60℃とした後、184mmol/L−塩化亜鉛水溶液150mlと250mmol/L−水酸化ナトリウム水溶液500mlを別々に添加した。滴下と同時に白色の酸化亜鉛が生成・析出し、2時間反応を行った。
【0036】
反応溶液を室温まで冷却して、得られた固形生成物は、沈降させ、濾過水洗をして塩を除去した後、120℃で12時間乾燥した。乾燥後、粉砕処理を施し実施例2〜4の各種干渉系白色粉末(実施例2:黄色干渉系、実施例3:緑色干渉系、実施例4:青色干渉系)を得た。その粉末表面のSEM写真を図2〜4に示す。また、得られた粉末の酸化亜鉛付着率は基板の雲母チタンに対して、100質量%(実施例2)、30質量%(実施例3)、45質量%(実施例4)であった。
【0037】
実施例5〜8
容量3000mlの丸底セパラブルフラスコに、基板として用いる粒子径約12μmの各種干渉系薄片状粉末(チミロンスプレンディッド(メルク株式会社製)、実施例5:赤色干渉系、実施例6:黄色干渉系、実施例7:緑色干渉系、実施例8:青色干渉系)50gを測り、イオン交換水400mlを加えて攪拌混合した。別途、種粒子として使用する粒子径約0.3μmの黄酸化鉄粒子0.5g(雲母チタンに対して1質量%)を100mlの水溶液中で超音波分散し調整した後、前記雲母チタンのスラリー水溶液に添加、攪拌混合した。雲母チタンのスラリー水溶液の液温を60℃とした後、184mmol/L−塩化亜鉛水溶液150mlと250mmol/L−水酸化ナトリウム水溶液500mlを別々に滴下した。滴下と同時に白色の酸化亜鉛が生成・析出し、2時間反応を行った。
【0038】
反応溶液を室温まで冷却して、得られた固形生成物は、沈降させ、濾過水洗をして塩を除去した後、120℃で12時間乾燥した。乾燥後、粉砕処理を施し実施例5〜8の各種干渉系白色粉末(実施例5:赤色干渉系、実施例6:黄色干渉系、実施例7:緑色干渉系、実施例8:青色干渉系)を得た。実施例5の粉末表面のSEM写真を図5に示す。また、得られた粉末の酸化亜鉛付着率は、基板の雲母チタンに対して45質量%であった。
【0039】
実施例9〜11
容量3000mlの丸底セパラブルフラスコに、基板として用いる粒子径約12μmの赤色干渉系雲母チタン50gを測り、イオン交換水400mlを加えて攪拌混合した。別途、種粒子として使用する粒子径約0.3μmの黄酸化鉄粒子0.5g(雲母チタンに対して1質量%)を100mlの水溶液中で超音波分散し調整した後、前記雲母チタンのスラリー水溶液に添加、攪拌混合した。さらに各種酸(実施例9:グルタミン酸、実施例10:酢酸、実施例11:アスパラギン酸)を亜鉛イオンに対して1当量共存させるために、実施例9ではL−グルタミン酸ソーダ水溶液を、実施例10では酢酸水溶液を、実施例11ではL−アスパラギン酸ソーダ水溶液をそれぞれ添加した。雲母チタンのスラリー水溶液の液温を60℃とした後、184mmol/L−塩化亜鉛水溶液150mlと250mmol/L−水酸化ナトリウム水溶液500mlを別々に添加した。滴下と同時に白色の酸化亜鉛が生成・析出し、2時間反応を行った。
【0040】
反応溶液を室温まで冷却して、得られた固形生成物は、沈降させ、濾過水洗をして塩を除去した後、120℃で12時間乾燥した。乾燥後、粉砕処理を施し実施例9〜11の赤色干渉系白色粉末を得た。その粉末表面のSEM写真を図6〜8に示す。また、得られた粉末の酸化亜鉛付着率は、基板の雲母チタンに対して45質量%であった。
【0041】
実施例12〜13
容量3000mlの丸底セパラブルフラスコに、基板として用いる粒子径約12μmの赤色干渉系雲母チタン50gを測り、イオン交換水400mlを加えて攪拌混合した。別途、種粒子として使用する粒子径約0.3μmの黄酸化鉄粒子0.5g(雲母チタンに対して1質量%)を100mlの水溶液中で超音波分散し調整した後、前記雲母チタンのスラリー水溶液に添加、攪拌混合した。さらに各種金属イオン(実施例12:マグネシウムイオン、実施例13:カルシウムイオン)を添加し、亜鉛イオンに対して1当量共存させた。雲母チタンのスラリー水溶液の液温を60℃とした後、184mmol/L−塩化亜鉛水溶液150mlと250mmol/L−水酸化ナトリウム水溶液500mlを別々に添加した。滴下と同時に白色の酸化亜鉛が生成・析出し、2時間反応を行った。
【0042】
反応溶液を室温まで冷却して、得られた固形生成物は、沈降させ、後濾過水洗をして塩を除去した後、120℃で12時間乾燥した。乾燥後、粉砕処理を施し実施例12〜13の赤色干渉系白色粉末を得た。また、得られた粉末の酸化亜鉛付着率は、基板の雲母チタンに対して45質量%であった。
【0043】
実施例14〜16
容量3000mlの丸底セパラブルフラスコに、基板として用いる粒子径約12μmのタルク(実施例14)または雲母(実施例15,16)50gを測り、イオン交換水400mlを加えて攪拌混合した。別途、種粒子として使用する粒子径約0.3μmの黄酸化鉄粒子0.5g(雲母チタンに対して1質量%)を100mlの水溶液中で超音波分散し調整した後、前記雲母チタンのスラリー水溶液に添加、攪拌混合した。雲母チタンのスラリー水溶液の液温を60℃とした後、184mmol/L−塩化亜鉛水溶液150mlと250mmol/L−水酸化ナトリウム水溶液500mlを別々に添加した。滴下と同時に白色の酸化亜鉛が生成・析出し、2時間反応を行った。
反応溶液を室温まで冷却して、得られた固形生成物は、沈降させ、後濾過水洗をして塩を除去した後、120℃で12時間乾燥した。乾燥後、粉砕処理を施し実施例14〜16の白色粉末を得た。その粉末表面のSEM写真を図9〜11に示す。
【0044】
比較例1
比較例として、共存種粒子は一切添加せず、イオン交換水を適量調整した以外は実施例1と同様の製法で白色粉末を得た。
上記実施例の複合粉末を配合した各種化粧料を20名の女性パネラーに塗布し、肌の凹凸(素肌の毛穴や小じわ等)及び色彩的な欠点(くすみやしみ・そばかす、赤味、目の回りのくま等)を補正する効果、透明感、仕上りの自然さ、及び経時でのテカリ感について下記基準に基づき実用特性評価を行った。
【0045】
実用特性評価基準
◎ 17名以上が良いと回答
○ 12名〜16名が良いと回答
△ 9名〜11名が良いと回答
× 5名〜8名が良いと回答
×× 4名以下が良いと回答
化粧料の処方と評価結果を以下に示す。
【0046】
【表1】
【0047】
表1から明らかなように、実施例1の複合粉末を配合した実施例17のファンデーションは、肌の凹凸や色彩的な欠点を補正すると共に透明感のある自然な仕上りを与えるものであった。さらに、皮脂による経時でのテカリ感が抑えらていた。
これに対し、比較例1の複合粉末を配合した比較例2のファンデーションでは、肌の凹凸や色彩的な欠点が補正されず、さらに透明感のある自然な仕上りが得られなかった。さらに、時間がたつとテカリ感が生じてしまった。また、干渉系雲母チタンを配合した比較例3のファンデーションでは、色彩的な欠点は補正されているものの、肌の凹凸が目立ち、チカチカ感があり透明感のある自然な仕上りが得られなかった。さらに、時間がたつとテカリ感が生じてしまった。
【0048】
【表2】
【0049】
表2から明らかなように、実施例2の複合粉末を配合した実施例18のファンデーションは、肌の凹凸や色彩的な欠点を補正すると共に透明感のある自然な仕上りを与えるものであった。さらに、皮脂による経時でのテカリ感が抑えられていた。
これに対し、比較例1の複合粉末を配合した比較例4のファンデーションでは、肌の凹凸が補正されず、さらに透明感及び自然な仕上りについても十分な結果が得られなかった。さらに、時間がたつとテカリ感が生じてしまった。また、干渉系雲母チタンを配合した比較例5のファンデーションでは、肌の凹凸が目立ってチカチカ感があり、透明感のある自然な仕上りが得られなかった。さらに、時間がたつとテカリ感が生じてしまった。
【0050】
【表3】
【0051】
表3から明らかなように、実施例1,5の複合粉末を配合した実施例19,20のフェースパウダーは、肌の凹凸や色彩的な欠点を補正すると共に透明感のある自然な仕上りを与えるものであった。さらに、使用感触においてもなめらかな軽い感触を有していた。さらに、皮脂による経時でのテカリ感が抑えられていた。
これに対し、比較例1の複合粉末を配合した比較例6のフェースパウダーでは、肌の凹凸が目立ってチカチカ感があり、透明感のある自然な仕上りが得られなかった。さらに、時間がたつとテカリ感が生じてしまった。
【0052】
【表4】
【0053】
表4から明らかなように、実施例1,11の複合粉末を配合した実施例21,22のファンデーションは、肌の凹凸や色彩的な欠点を補正すると共に透明感のある自然な仕上りを与えるものであった。さらに、使用感触においてもなめらかな軽い感触を有していた。さらに、皮脂による経時でのテカリ感が抑えられていた。
これに対し、干渉系雲母チタンを配合した比較例7のファンデーションでは、肌の凹凸が目立ってチカチカ感があり、透明感のある自然な仕上りが得られなかった。さらに、時間がたつとテカリ感が生じてしまった。
【0054】
以下、実施を行った他の処方を示す。
【表5】
【0055】
【表6】
【0056】
【表7】
【0057】
表5〜7の化粧料はいずれも十分に肌の凹凸や色彩的な欠点を補正すると共に透明感のある自然な仕上りを与えるものであった。さらに、皮脂による経時でのテカリ感が十分に抑えられていた。
次に、以下の製法で得た複合粉末について、光学特性(チカチカ感)及び皮脂固化作用の測定評価を行った。
【0058】
実施例26〜28
容量3000mlの丸底セパラブルフラスコに、基板として用いる粒子径約12μmの赤色干渉系雲母チタン50gを測り、イオン交換水400mlを加えて攪拌混合した。別途、種粒子として使用する粒子径約0.3μmの黄酸化鉄粒子(雲母チタンに対して1質量%(実施例26)、3質量%(実施例27)、5質量%(実施例28))を100mlの水溶液中で超音波分散し調整した後、前記雲母チタンのスラリー水溶液に添加、攪拌混合した。雲母チタンのスラリー水溶液の液温を60℃とした後、基板に対する酸化亜鉛付着率が30%(実施例26)、50%(実施例27)、100%(実施例28)となるように塩化亜鉛水溶液と水酸化ナトリウム水溶液を別々に添加した。滴下と同時に白色の酸化亜鉛が生成・析出し、30分反応を行った。
【0059】
反応溶液を室温まで冷却して、得られた固形生成物を沈降させた後濾過水洗をして塩を除去し、150℃で12時間乾燥した。乾燥後、粉砕、ふるい処理を施し実施例26〜28の赤色干渉系白色粉末を得た。
比較例8
また、種粒子を添加せず、基板に対する酸化亜鉛付着率が15%となるようにした以外は上記と同様の製法で比較例8の白色粉末を得た。
チカチカ感の測定評価
実施例26〜28及び比較例8の複合粉末について、顕微光沢計でSE値の測定を行い粉末のチカチカ感を評価した。その結果を図12に示す。
【0060】
図12から明らかなように、種粒子を共存させて製造した実施例26〜28の粉末では、種粒子を共存させないで製造した比較例8の粉末に比してチカチカ感が低減されていることがわかる。
皮脂固化作用の測定評価
実施例26〜28、比較例8の複合粉末、さらに複合化処理を施さない赤色干渉系雲母チタン(チミロンスーパーレッド)と亜鉛華(AZO−BS)について、レオメーターで硬度の測定を行い粉末の皮脂固化作用を評価した。その結果を図13に示す。
【0061】
図13から明らかなように、実施例26〜28の粉末では、比較例8の粉末及び干渉系雲母チタンと異なり経時と共に皮脂を固化することがわかる。また、亜鉛華と比べても経時と共に優れた皮脂固化作用を発揮し、実施例26〜28の粉末は経時での皮脂固化作用に特に優れていることがわかる。したがって、これらの粉末をメークアップ化粧料に配合すれば、経時での皮脂の分泌によるテカリ感や化粧くずれを効果的に抑え、仕上がりを持続させることができる。
【0062】
【発明の効果】
以上説明したように本発明によれば、突起状の酸化亜鉛粒子が干渉色を発現する薄片状基板粉末の表面に付着した複合粉末が得られ、これを配合したメークアップ化粧料を使用すれば肌の凹凸及び色彩的な欠点が均一に補正され、透明感のある自然で美しい仕上がりが得られる。
【図面の簡単な説明】
【図1】実施例1の複合粉末表面のSEM写真である。
【図2】実施例2の複合粉末表面のSEM写真である。
【図3】実施例3の複合粉末表面のSEM写真である。
【図4】実施例4の複合粉末表面のSEM写真である。
【図5】実施例5の複合粉末表面のSEM写真である。
【図6】実施例9の複合粉末表面のSEM写真である。
【図7】実施例10の複合粉末表面のSEM写真である。
【図8】実施例11の複合粉末表面のSEM写真である。
【図9】実施例14の複合粉末表面のSEM写真である。
【図10】実施例15の複合粉末表面のSEM写真である。
【図11】実施例16の複合粉末表面のSEM写真である。
【図12】顕微光沢計で測定したSE値により粉末のチカチカ感を評価したグラフである。
【図13】レオメーターで測定した硬度により粉末の皮脂固化作用を評価したプロットである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a composite powder, a makeup cosmetic containing the composite powder, and a method for producing the composite powder, and more particularly to skin irregularities, correction of color defects and a natural finish, and improvement of finish sustainability.
[0002]
[Prior art]
Conventionally, as a method for correcting physical unevenness of skin such as pores and fine lines on the bare skin, the blur effect by diffuse reflection of spherical powder has been used.
In particular, for the purpose of obtaining such an effect recently, the surface of a flaky powder such as talc, mica, alumina, barium sulfate or the like is obtained by uniformly combining a fine spherical resin powder on the surface of spherical silica particles. Development of composite powders that improve the light diffusibility by providing a titanium oxide layer and a silica layer to increase the refractive index of light and enhance the blur effect has been carried out.
[0003]
On the other hand, as a method for correcting chromatic defects exemplified by dullness and blemishes on skin, freckles, redness, dark circles around eyes, etc., strong concealment and coloring power with a refractive index of 2.69 are mainly used. Certain titanium oxide pigments have been used.
It is also known that correction based on the spectral characteristics of powder is effective as a method for correcting such color defects.
[0004]
[Problems to be solved by the invention]
However, the blur effect due to the diffuse reflection of spherical powder can correct unevenness of the skin such as pores and fine lines, which is somewhat satisfactory from the viewpoint of uniform finish of the makeup skin, but about the color defects of the skin It does not give sufficient correction.
[0005]
On the other hand, by using titanium oxide pigment, it is possible to hide the color defects of the skin and make it invisible, but the texture is matte matte and strong light due to high refractive index Due to the scattering properties, the foundation finish turned pale and did not give a natural finish. Furthermore, it did not feel transparent and gave only a different impression that was far from the actual skin.
In order to solve this problem, a powder has been developed (Japanese Unexamined Patent Publication (Kokai) No. 7-3181) aimed at finishing naturally adapted to the skin by doping titanium oxide with iron oxide and coloring it yellow-orange. Although it made a certain contribution to the effect of making the image appear natural, it could not be said that the problem was fully solved.
[0006]
Furthermore, in order to obtain a finish close to the actual bare skin, powder development focusing on the structure of the skin tissue has been carried out, but there are limits to imitating complex skin tissue, and a natural finish can be obtained. In addition, it is not concealed, so it cannot cover color defects such as dull skin and uneven color, and it cannot be expected to have a sufficient effect.
And it is known that the correction by the spectral characteristics of powder is the most effective method for correcting the color defects of the skin, and such correction by the interference system mica titanium is actually effective. It is made in makeup cosmetics. However, since mica titanium has a strong surface reflection, makeup skin is finished with a flickering appearance, and skin irregularities such as pores and fine lines are conspicuous, making it difficult to obtain a natural and beautiful finish.
[0007]
Further, depending on the prescription of the makeup cosmetic, there is a problem that the sebum secreted over time causes shine and makeup loss, resulting in lack of sustainability of the finish. The present invention has been made in view of the above prior art, and its purpose is to correct the unevenness of skin and color defects by blending in cosmetics, give a natural finish, and further have a finish finish. An object of the present invention is to provide a powder, a makeup cosmetic containing the powder, and a method for producing a composite powder.
[0008]
[Means for Solving the Problems]
As a result of intensive studies in view of the above problems, the present inventors,Express interference colorBy blending complex powder with a certain amount of protruding zinc oxide particles on the surface of flaky substrate particles into make-up cosmetics, skin irregularities and skin color defects are corrected, as well as bare skin optics. The present inventors have found that a natural finish with transparency close to the characteristics can be obtained, and completed the present invention.
That is, the composite powder of the present invention is characterized by containing flaky substrate powder and zinc oxide particles adhering to the surface of the substrate powder in a protruding shape.
[0009]
In the powder, it is preferable that the zinc oxide particles have an elongated needle shape.
In the powder, it is preferable that the zinc oxide particles attached to the surface of the substrate powder have a substantially uniform particle diameter.
In the powder, it is preferable that the zinc oxide particles adhere to the surface of the substrate powder so that the particle interval is substantially uniform.
[0010]
Moreover, in the powder, mica titanium is exemplified as the substrate powder that expresses the interference color.
Moreover, it is suitable for the said powder that the adhesion rate of a zinc oxide particle is 15-100 mass% with respect to the said board | substrate.
Moreover, the makeup cosmetic of the present invention is characterized by blending the composite powder.
Further, the method for producing a composite powder of the present invention is such that seed particles coexist in a slurry solution of a flaky substrate powder, and a zinc ion solution and an alkaline aqueous solution are added to the solution and reacted, thereby using the seed particles as a nucleus. Zinc oxide is crystal-grown, and the generated zinc oxide particles are adhered to the surface of the substrate powder.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described.
The powder obtained by the production method of the present invention is a composite powder in which a certain amount of protruding zinc oxide particles adhere to the surface of a flaky powder as a substrate. When this powder is blended into a makeup cosmetic, the unevenness of the skin is uniformly corrected by the light diffusibility of the zinc oxide particles adhering to the surface of the flaky powder, and a natural and beautiful finish is obtained. Further, the zinc oxide particles absorb sebum secreted over time, and such optical characteristics are exhibited over time, so that the finish can be maintained without causing a feeling of shine and makeup loss due to sebum.
[0012]
In addition, since zinc oxide particles adhere to the surface of the substrate powder, the contact between the powder and the skin is reduced and the feeling of use becomes lighter.When this is used in cosmetics, Since it is plate-shaped and has a good fit, it spreads smoothly and evenly on the skin, so that a favorable effect can be obtained in terms of use feeling.
As the shape of the above-mentioned “projection-like” zinc oxide particles, various shapes can be obtained depending on the substrate powder to be used and the production conditions. Usually, for example, as shown in FIG. can get.
[0013]
Used as a substrate for such composite powderExpress interference colorExamples of the flaky powder include mica, and are not particularly limited as long as the average particle diameter is 1 to 150 μm.
Moreover, it is suitable that the adhesion rate of a zinc oxide is 15-100 mass% with respect to the said board | substrate.
[0014]
Furthermore, a composite powder obtained by attaching a certain amount of protruding zinc oxide particles on the surface of a flaky powder that expresses an interference color such as titanium mica as a substrate, is applied to the makeup makeup. By blending with the material, the unevenness of the skin and the color defects can be uniformly corrected by the spectral characteristics of the flaky powder due to the interference color and the light diffusibility of the zinc oxide particles adhering to the surface of the flaky powder.
Furthermore, the zinc oxide particles adhere to the protrusions to improve the diffuse reflection characteristics of the powder, thereby reducing the strong surface reflection light peculiar to mica titanium and the like, and the refractive index of zinc oxide (2.05) is oil. Since it is higher than the refractive index (1.4 to 1.5), a natural and beautiful finish with an appropriate gloss becomes possible even when blended in an emulsifying base.
[0015]
That is, the interference light of the layered structure powder that expresses the interference color such as titanium mica has blue, yellow, green, red, purple, etc., and by selecting the preferred interference color corresponding to the skin, the color defect of the skin While correcting, a natural and beautiful finish is possible without causing a flickering sensation peculiar to mica titanium or the like.
For example, dull skin and dark circles around the eyes lack the color of yellow to red light absorbed by melanin and stasis, so the skin is healthy by correcting with red to orange reflected interference light. The result is a bright and transparent finish.
[0016]
In addition, recently developed sensitive skin such as sensitive skin, atopic skin, and acne skin has been corrected to a natural finish that softens the redness by the green reflected interference light that is insufficiently absorbed by the hemoglobin pigment in the blood. can do. In addition, in the case of skin with many color irregularities such as stains and freckles, a beautiful makeup skin can be obtained in which the skin is naturally uniformed by correcting the yellow reflected interference light absorbed by the dark melanin pigment.
Examples of the flaky powder used as the substrate of the layered structure powder that expresses the interference color include mica titanium, low-order titanium oxide-coated mica, and iron oxide-coated mica titanium, and those having an average particle diameter of 1 to 150 μm. If there is no particular limitation.
[0017]
Moreover, it is suitable for the adhesion rate of barium sulfate adhering to the board | substrate surface which expresses an interference color to be 15-100 mass% with respect to a board | substrate. When the adhesion rate of zinc oxide is 15% by mass or less, the surface reflection of the flaky substrate powder cannot be suppressed, and a flickering characteristic is seen, which is not preferable. Furthermore, sebum adsorption over time is poor, and a feeling of shine appears on the makeup skin. When the adhesion rate exceeds 100% by mass, the powder feels rough and the feeling of use becomes extremely bad. Further, the interference color of the flaky powder is excessively concealed and hinders color correction of the makeup skin. The cosmetic effect is extremely deteriorated.
[0018]
In order to obtain a flaky powder to which protruding particles are attached, the production method of the present invention is characterized in that seed particles are used during the production of the powder. In other words, particles formed by coexisting fine particles such as metal oxides at the time of reaction by mixing a zinc ion solution and an alkaline aqueous solution, which becomes the nucleus of crystal growth of zinc oxide, and crystal growth of zinc oxide from seed particles A structure in which is uniformly deposited on the substrate powder is obtained. Hereinafter, a method for producing a composite powder according to the present invention will be described.
[0019]
The zinc compound used as a raw material for the composite powder is not particularly limited as long as it generates zinc ions in a solvent such as water or alcohol. During the reaction, a zinc ion solution obtained by dissolving a zinc compound in a solvent is prepared and used in advance.
Such zinc compounds include inorganic salts such as zinc chloride, zinc sulfate, zinc nitrate, zinc phosphate, zinc halide, zinc formate, zinc acetate, zinc propionate, zinc lactate, zinc oxalate, zinc citrate, etc. These organic salts are exemplified. Of these, zinc chloride and zinc acetate are preferred because the treatment of by-products is easy.
[0020]
Examples of the raw material for the alkaline aqueous solution include lithium hydroxide, sodium hydroxide, potassium hydroxide, lithium carbonate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, ammonia, ammonium carbonate and the like. Of these, sodium hydroxide is particularly preferred.
The concentrations of the zinc ion solution and the aqueous alkaline solution are both usually adjusted to 0.01 mmol / L to 1 mol / L. Preferably, it is in the range of 1 mmol / L to 100 mmol / L. When the concentration is smaller than this range, the efficiency is deteriorated as an industrial production method. On the other hand, when the concentration is larger than this range, the degree of nucleation increases due to the high degree of supersaturation, many fine particles are generated, aggregation occurs, and it becomes difficult to use for cosmetics.
[0021]
In addition, if a zinc ion solution and an aqueous alkali solution are mixed with time during the reaction, the reaction proceeds in the reaction solution at a concentration lower than that during substantial preparation.
As seed particles that coexist during the reaction, particles of titanium oxide, zinc oxide, alumina, aluminum hydroxide, silica, iron oxide, and the like can be used. These particle diameters are 0.02 μm to 2 μm, preferably 0.1 μm to 0.5 μm, and these fine particles serve as the nucleus of zinc oxide crystal growth and promote uniform adhesion of zinc oxide to the substrate powder surface. it can.
[0022]
Metal ions can be added for the purpose of controlling the crystal growth of the particles. By controlling the crystal growth of the particles, optical diffuse reflection can be enhanced or a change in glossiness depending on the angle can be imparted.
Examples of metal ions include lithium ions, sodium ions, potassium ions, magnesium ions, calcium ions, and aluminum ions. These may be used alone or in combination of two or more. Each metal ion is given as an aqueous solution or alcohol solution of a salt compound containing the corresponding metal.
[0023]
The metal ions are added in the range of 0.001 to 10 equivalents with respect to zinc ions. If it is less than 0.001 equivalent, control of the morphological adhesion structure becomes difficult. On the other hand, when the amount exceeds 10 equivalents, the generated zinc oxide aggregates and cannot be uniformly adhered to the substrate, resulting in an agglomerated state and lowering the feeling of use.
[0024]
Examples of metal salts for giving metal ions include lithium salts such as lithium hydroxide, lithium chloride, lithium nitrate, lithium carbonate and lithium acetate; sodium such as sodium hydroxide, sodium chloride, sodium nitrate, sodium carbonate and sodium acetate. Salts; potassium salts such as potassium hydroxide, potassium chloride, potassium nitrate, potassium carbonate, potassium acetate; magnesium salts such as magnesium hydroxide, magnesium chloride, magnesium nitrate, magnesium carbonate, magnesium acetate; calcium hydroxide, calcium chloride, calcium nitrate Calcium salts such as calcium carbonate and calcium acetate; aluminum salts such as aluminum hydroxide, aluminum chloride, aluminum nitrate, aluminum carbonate and aluminum acetate are used. In addition to these metal ions, acids such as acetic acid, glutamic acid and aspartic acid can also be present in the reaction solution for the purpose of controlling the crystal growth of the particles.
[0025]
The zinc ion solution and alkali ion aqueous solution prepared as described above are added to the slurry aqueous solution of the substrate powder containing seed particles and optionally added metal ions and acid, and reacted. The composite powder of the present invention can be obtained by subjecting the solution after completion of the reaction to treatment such as washing with water and pulverization.
Below, typical embodiment of the manufacturing method of this invention is shown.
[0026]
<
A solution in which iron oxide fine particles used as seed particles are ultrasonically dispersed is added to a slurry aqueous solution of titanium mica and stirred and mixed, and then the zinc chloride aqueous solution and the alkaline aqueous solution prepared as described above are added simultaneously. At this time, the molar ratio of alkali ions to zinc ions is set to a range of 1/2 to 2/1. The reaction temperature is preferably 10 to 100 ° C, more preferably 25 to 100 ° C.
[0027]
<
200 ml of ion-exchanged water and 50 g of titanium mica as a substrate are placed in a reaction vessel, and a pH controller connected with a stirrer and two microtube pumps is set. Two microtube pumps can be connected to an aqueous solution in which 37.65 g of zinc chloride is dissolved in 150 ml of ion exchange water and an aqueous solution in which 25 g of sodium hydroxide is dissolved in 450 ml of ion exchange water, respectively. Secure to.
While stirring at normal pressure and normal temperature, the reaction is carried out by dropwise addition for about 20 minutes while adjusting the amount of the two aqueous solutions dropped. The obtained product is filtered, washed with water and centrifuged three times, dried in an oven at 80 ° C. for 15 hours, and then pulverized with a personal mill. The obtained powder is passed through a 100 mesh sieve to obtain the desired product.
[0028]
When the composite powder of the present invention is blended in a makeup cosmetic, the blending amount is not particularly limited, but for example, by blending a large amount as an extender pigment, an effect of correcting skin unevenness can be obtained.
However, when using pigments with interference colors, such as titanium mica, as a substrate, make-up is required to correct the skin's chromatic defects such as dullness, spots, freckles, redness and dark circles around the eyes. It is preferable to mix 1% by mass or more with respect to the material. Moreover, when 20 mass% or more is mix | blended, since interference light is overemphasized and there exists an influence of becoming unnatural finish etc., it is unpreferable. In consideration of the above-described optical color correction, new texture, etc., 3% by mass or more is more preferable because a cosmetic effect can be imparted.
[0029]
The composite powder of the present invention is surface-treated with a treatment agent used for ordinary cosmetic pigments, such as silicone, metal soap, lecithin, amino acid, collagen, fluorine compound, etc., as long as the effect is not impaired. Can also be used. In the cosmetic of the present invention, as other powder components, titanium oxide, zinc oxide, bengara, yellow iron oxide, black iron oxide, ultramarine, cerium oxide, talc, mica, sericite, kaolin, bentonite, clay, silicic acid, Silicic anhydride, magnesium silicate, zinc stearate, fluorine-containing phlogopite, synthetic talc, barium sulfate, magnesium sulfate, calcium sulfate, boron nitride, bismuth oxychloride, alumina, zirconium oxide, magnesium oxide, chromium oxide, calamine, Inorganic powders such as magnesium carbonate and composites thereof; one kind of organic powders such as silicone powder, silicone elastic powder, polyurethane powder, cellulose powder, nylon powder, PMMA powder, starch, polyethylene powder, and composites thereof. Two or more kinds can be blended as necessary.
[0030]
In addition, the cosmetics of the present invention include oily components such as liquid paraffin, squalane, ester oil, diglyceride, triglyceride, perfluoropolyether, petrolatum, lanolin, ceresin, carnauba wax, solid paraffin, fatty acid, polyhydric alcohol, silicone resin. Fluorine resin, acrylic resin, vinyl pyrrolide, etc. can be blended as needed, or two or more.
The cosmetics of the present invention include pigments, pH adjusters, humectants, thickeners, surfactants, dispersants, stabilizers, colorants, preservatives, antioxidants, ultraviolet absorbers, fragrances, and the like. Can be appropriately blended within the range of achieving the object of the present invention.
[0031]
The makeup cosmetics of the present invention are produced by a usual method, and dosage forms include emulsifying foundation, powder foundation, oil foundation, stick foundation, eye shadow, cheek color, body powder, perfume powder, baby powder, face powder and the like. Illustrated.
[0032]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples. In addition, this invention is not limited by this, The compounding quantity of each component in the Example of cosmetics is represented by the mass% with respect to cosmetics whole quantity.
The composite powder of the present invention was produced under various conditions (Examples 1 to 16).
[0033]
Example 1
In a round bottom separable flask having a capacity of 3000 ml, 50 g of red interference type mica titanium having a particle diameter of about 12 μm used as a substrate was measured, and 400 ml of ion exchange water was added and stirred and mixed. Separately, 0.5 g of yellow iron oxide particles having a particle diameter of about 0.3 μm used as seed particles (1% by mass with respect to titanium mica) were ultrasonically dispersed in a 100 ml aqueous solution, and then the slurry of titanium mica was prepared. It was added to the aqueous solution and mixed with stirring. After the liquid temperature of the slurry aqueous solution of titanium mica was 60 ° C., 150 ml of 184 mmol / L-zinc chloride aqueous solution and 500 ml of 250 mmol / L-sodium hydroxide aqueous solution were added separately. Simultaneously with the dropwise addition, white zinc oxide was produced and precipitated, and the reaction was carried out for 2 hours.
[0034]
The reaction solution was cooled to room temperature, the obtained solid product was allowed to settle, washed with filtered water to remove salts, and dried at 120 ° C. for 12 hours. After drying, pulverization and sieving were performed to obtain a red interference white powder of Example 1. An SEM photograph of the powder surface is shown in FIG. Moreover, the zinc oxide adhesion amount of the obtained powder was 45 mass% with respect to the mica titanium of a board | substrate.
[0035]
Examples 2-4
Various interference system mica titanium 50 g (Example 2: yellow interference system, Example 3: green interference system, Example 4: blue interference system) used as a substrate in a round bottom separable flask having a capacity of 3000 ml. Measured, 400 ml of ion exchange water was added and mixed with stirring. Separately, 0.5 g of yellow iron oxide particles having a particle diameter of about 0.3 μm used as seed particles (1% by mass with respect to titanium mica) were ultrasonically dispersed in a 100 ml aqueous solution, and then the slurry of titanium mica was prepared. It was added to the aqueous solution and mixed with stirring. After the liquid temperature of the slurry aqueous solution of titanium mica was 60 ° C., 150 ml of 184 mmol / L-zinc chloride aqueous solution and 500 ml of 250 mmol / L-sodium hydroxide aqueous solution were added separately. Simultaneously with the dropwise addition, white zinc oxide was produced and precipitated, and the reaction was carried out for 2 hours.
[0036]
The reaction solution was cooled to room temperature, and the resulting solid product was allowed to settle, washed with filtered water to remove salts, and then dried at 120 ° C. for 12 hours. After drying, pulverization was performed to obtain various interference white powders of Examples 2 to 4 (Example 2: yellow interference system, Example 3: green interference system, Example 4: blue interference system). SEM photographs of the powder surface are shown in FIGS. Moreover, the zinc oxide adhesion rate of the obtained powder was 100 mass% (Example 2), 30 mass% (Example 3), and 45 mass% (Example 4) with respect to the mica titanium of a board | substrate.
[0037]
Examples 5-8
Various interference type flaky powders having a particle size of about 12 μm used as a substrate in a 3000 ml round bottom separable flask (Timilon Splendid (manufactured by Merck Ltd.), Example 5: Red interference system, Example 6: Yellow interference system Example 7: Green interference system, Example 8: Blue interference system) 50 g was measured, and 400 ml of ion-exchanged water was added and stirred and mixed. Separately, 0.5 g of yellow iron oxide particles having a particle diameter of about 0.3 μm used as seed particles (1% by mass with respect to titanium mica) were ultrasonically dispersed in a 100 ml aqueous solution, and then the slurry of titanium mica was prepared. It was added to the aqueous solution and mixed with stirring. After the liquid temperature of the aqueous slurry of mica titanium was 60 ° C., 150 ml of 184 mmol / L-zinc chloride aqueous solution and 500 ml of 250 mmol / L-sodium hydroxide aqueous solution were separately added dropwise. Simultaneously with the dropwise addition, white zinc oxide was produced and precipitated, and the reaction was carried out for 2 hours.
[0038]
The reaction solution was cooled to room temperature, and the resulting solid product was allowed to settle, washed with filtered water to remove salts, and then dried at 120 ° C. for 12 hours. After drying, pulverization was performed, and various interference white powders of Examples 5 to 8 (Example 5: red interference system, Example 6: yellow interference system, Example 7: green interference system, Example 8: blue interference system) ) An SEM photograph of the powder surface of Example 5 is shown in FIG. Moreover, the zinc oxide adhesion rate of the obtained powder was 45 mass% with respect to the mica titanium of a board | substrate.
[0039]
Examples 9-11
In a round bottom separable flask having a capacity of 3000 ml, 50 g of red interference type mica titanium having a particle diameter of about 12 μm used as a substrate was measured, and 400 ml of ion exchange water was added and stirred and mixed. Separately, 0.5 g of yellow iron oxide particles having a particle diameter of about 0.3 μm used as seed particles (1% by mass with respect to titanium mica) were ultrasonically dispersed in a 100 ml aqueous solution, and then the slurry of titanium mica was prepared. It was added to the aqueous solution and mixed with stirring. Further, in order to allow 1 equivalent of various acids (Example 9: glutamic acid, Example 10: acetic acid, Example 11: aspartic acid) to zinc ions, in Example 9, an aqueous solution of sodium L-glutamate was used in Example 10. In Example 11, an aqueous acetic acid solution was added, and in Example 11, an aqueous L-aspartate aqueous solution was added. After the liquid temperature of the slurry aqueous solution of titanium mica was 60 ° C., 150 ml of 184 mmol / L-zinc chloride aqueous solution and 500 ml of 250 mmol / L-sodium hydroxide aqueous solution were added separately. Simultaneously with the dropwise addition, white zinc oxide was produced and precipitated, and the reaction was carried out for 2 hours.
[0040]
The reaction solution was cooled to room temperature, and the resulting solid product was allowed to settle, washed with filtered water to remove salts, and then dried at 120 ° C. for 12 hours. After drying, pulverization was performed to obtain red interference white powders of Examples 9-11. SEM photographs of the powder surface are shown in FIGS. Moreover, the zinc oxide adhesion rate of the obtained powder was 45 mass% with respect to the mica titanium of a board | substrate.
[0041]
Examples 12-13
In a round bottom separable flask having a capacity of 3000 ml, 50 g of red interference type mica titanium having a particle diameter of about 12 μm used as a substrate was measured, and 400 ml of ion exchange water was added and stirred and mixed. Separately, 0.5 g of yellow iron oxide particles having a particle diameter of about 0.3 μm used as seed particles (1% by mass with respect to titanium mica) were ultrasonically dispersed in a 100 ml aqueous solution, and then the slurry of titanium mica was prepared. It was added to the aqueous solution and mixed with stirring. Furthermore, various metal ions (Example 12: Magnesium ion, Example 13: Calcium ion) were added, and 1 equivalent was made to coexist with zinc ion. After the liquid temperature of the slurry aqueous solution of titanium mica was 60 ° C., 150 ml of 184 mmol / L-zinc chloride aqueous solution and 500 ml of 250 mmol / L-sodium hydroxide aqueous solution were added separately. Simultaneously with the dropwise addition, white zinc oxide was produced and precipitated, and the reaction was carried out for 2 hours.
[0042]
The reaction solution was cooled to room temperature, and the resulting solid product was allowed to settle, and then washed with filtered water to remove salts, and then dried at 120 ° C. for 12 hours. After drying, pulverization was performed to obtain red interference white powders of Examples 12-13. Moreover, the zinc oxide adhesion rate of the obtained powder was 45 mass% with respect to the mica titanium of a board | substrate.
[0043]
Examples 14-16
In a 3000 ml round bottom separable flask, 50 g of talc (Example 14) or mica (Examples 15 and 16) having a particle size of about 12 μm used as a substrate was measured, and 400 ml of ion-exchanged water was added and mixed with stirring. Separately, 0.5 g of yellow iron oxide particles having a particle diameter of about 0.3 μm used as seed particles (1% by mass with respect to titanium mica) was ultrasonically dispersed in 100 ml of aqueous solution, and then the slurry of titanium mica was prepared. Added to the aqueous solution and mixed with stirring. After the liquid temperature of the slurry aqueous solution of titanium mica was 60 ° C., 150 ml of 184 mmol / L-zinc chloride aqueous solution and 500 ml of 250 mmol / L-sodium hydroxide aqueous solution were added separately. Simultaneously with the dropwise addition, white zinc oxide was formed and precipitated, and reacted for 2 hours.
The reaction solution was cooled to room temperature, and the resulting solid product was allowed to settle, and then washed with filtered water to remove salts, and then dried at 120 ° C. for 12 hours. After drying, pulverization was performed to obtain white powders of Examples 14-16. SEM photographs of the powder surface are shown in FIGS.
[0044]
Comparative Example 1
As a comparative example, white powder was obtained by the same production method as in Example 1 except that no coexisting seed particles were added and an appropriate amount of ion-exchanged water was adjusted.
Various cosmetics containing the composite powders of the above examples were applied to 20 female panelists, and skin irregularities (such as pores and fine lines on the skin) and color defects (dullness, spots, freckles, redness, eyes) Practical properties were evaluated based on the following criteria for the effect of correcting surrounding bears, etc., transparency, naturalness of the finish, and shine feeling over time.
[0045]
Practical property evaluation criteria
◎ More than 17 people answered
○ Twelve to 16 people are good
△ Nine to eleven people are good
× 5-8 people answered good
Xx Answer that 4 or fewer people are good
The prescription and evaluation results of cosmetics are shown below.
[0046]
[Table 1]
[0047]
As is apparent from Table 1, the foundation of Example 17 in which the composite powder of Example 1 was blended corrected the unevenness of the skin and the color defects, and gave a natural finish with transparency. Furthermore, the feeling of shine due to sebum over time was suppressed.
On the other hand, in the foundation of Comparative Example 2 in which the composite powder of Comparative Example 1 was blended, the unevenness of the skin and the color defects were not corrected, and a transparent natural finish was not obtained. In addition, the feeling of shine was generated over time. Further, in the foundation of Comparative Example 3 in which the interference type mica titanium was blended, although the color defects were corrected, the unevenness of the skin was conspicuous, there was a flickering feeling, and a transparent natural finish was not obtained. In addition, the feeling of shine was generated over time.
[0048]
[Table 2]
[0049]
As is clear from Table 2, the foundation of Example 18 in which the composite powder of Example 2 was blended corrected the unevenness of the skin and the color defects, and gave a natural finish with transparency. Furthermore, the feeling of shine due to sebum over time was suppressed.
On the other hand, in the foundation of Comparative Example 4 in which the composite powder of Comparative Example 1 was blended, the unevenness of the skin was not corrected, and sufficient results were not obtained with respect to transparency and natural finish. In addition, the feeling of shine was generated over time. Moreover, in the foundation of the comparative example 5 which mix | blended interference type mica titanium, the unevenness | corrugation of skin was conspicuous and there was a flickering feeling, and the transparent natural finish was not obtained. In addition, the feeling of shine was generated over time.
[0050]
[Table 3]
[0051]
As is apparent from Table 3, the face powders of Examples 19 and 20 in which the composite powders of Examples 1 and 5 were blended corrected the unevenness of the skin and color defects, and gave a natural finish with transparency. It was a thing. Furthermore, it had a smooth and light touch when used. Furthermore, the feeling of shine due to sebum over time was suppressed.
On the other hand, in the face powder of Comparative Example 6 in which the composite powder of Comparative Example 1 was blended, the unevenness of the skin was conspicuous and there was a flickering feeling, and a transparent natural finish was not obtained. In addition, the feeling of shine was generated over time.
[0052]
[Table 4]
[0053]
As is apparent from Table 4, the foundations of Examples 21 and 22 containing the composite powders of Examples 1 and 11 correct the unevenness of the skin and color defects, and give a natural finish with transparency. Met. Furthermore, it had a smooth and light touch when used. Furthermore, the feeling of shine due to sebum over time was suppressed.
On the other hand, in the foundation of Comparative Example 7 in which the interference type mica titanium was blended, the unevenness of the skin was conspicuous and there was a flickering feeling, and a transparent natural finish was not obtained. In addition, the feeling of shine was generated over time.
[0054]
Hereinafter, other prescriptions performed are shown.
[Table 5]
[0055]
[Table 6]
[0056]
[Table 7]
[0057]
All of the cosmetics in Tables 5 to 7 sufficiently corrected the unevenness of the skin and the color defects, and gave a natural finish with transparency. Furthermore, the sensation of aging due to sebum was sufficiently suppressed.
Next, the composite powder obtained by the following manufacturing method was subjected to measurement and evaluation of optical properties (tickiness) and sebum solidifying action.
[0058]
Examples 26-28
In a round bottom separable flask having a capacity of 3000 ml, 50 g of red interference type mica titanium having a particle diameter of about 12 μm used as a substrate was measured, and 400 ml of ion exchange water was added and stirred and mixed. Separately, yellow iron oxide particles having a particle diameter of about 0.3 μm used as seed particles (1 mass% (Example 26), 3 mass% (Example 27), 5 mass% (Example 28) with respect to titanium mica) Was ultrasonically dispersed in a 100 ml aqueous solution and then added to the slurry aqueous solution of titanium mica and mixed with stirring. After the liquid temperature of the aqueous solution of titanium mica is 60 ° C., the zinc oxide adhesion rate to the substrate is 30% (Example 26), 50% (Example 27), and 100% (Example 28). An aqueous zinc solution and an aqueous sodium hydroxide solution were added separately. Simultaneously with the dropwise addition, white zinc oxide was produced and precipitated, and the reaction was carried out for 30 minutes.
[0059]
The reaction solution was cooled to room temperature, the obtained solid product was allowed to settle, washed with filtered water to remove salts, and dried at 150 ° C. for 12 hours. After drying, pulverization and sieving were performed to obtain red interference white powders of Examples 26 to 28.
Comparative Example 8
Moreover, the white powder of the comparative example 8 was obtained with the manufacturing method similar to the above except not adding seed particles and making it the zinc oxide adhesion rate with respect to a board | substrate becoming 15%.
Measurement evaluation of flickering feeling
For the composite powders of Examples 26 to 28 and Comparative Example 8, the SE value was measured with a microgloss meter to evaluate the flickering feeling of the powder. The result is shown in FIG.
[0060]
As is clear from FIG. 12, the powders of Examples 26 to 28 produced by coexisting seed particles have a reduced flickering feeling compared to the powder of Comparative Example 8 produced without coexisting seed particles. I understand.
Measurement and evaluation of sebum solidification
For the composite powders of Examples 26 to 28 and Comparative Example 8 and further red interference-free mica titanium (Timilon super red) and zinc white (AZO-BS) not subjected to the composite treatment, the hardness was measured with a rheometer, and the powder The sebum solidifying action was evaluated. The result is shown in FIG.
[0061]
As can be seen from FIG. 13, the powders of Examples 26 to 28 solidify sebum over time unlike the powder of Comparative Example 8 and the interference system titanium mica. Moreover, even if compared with zinc white, the sebum solidifying action excellent with time is exhibited, and it can be seen that the powders of Examples 26 to 28 are particularly excellent in sebum solidifying action over time. Therefore, if these powders are blended into a makeup cosmetic, it is possible to effectively suppress the sensation and makeup loss due to sebum secretion over time and maintain the finish.
[0062]
【The invention's effect】
As described above, according to the present invention, the protruding zinc oxide particles areExpress interference colorA composite powder adhered to the surface of the flaky substrate powder is obtained. By using a makeup cosmetic containing this, the unevenness of the skin and the color defects are uniformly corrected, and a natural and beautiful finish with transparency is obtained. can get.
[Brief description of the drawings]
1 is a SEM photograph of the surface of a composite powder of Example 1. FIG.
2 is a SEM photograph of the surface of a composite powder of Example 2. FIG.
3 is a SEM photograph of the composite powder surface of Example 3. FIG.
4 is a SEM photograph of the composite powder surface of Example 4. FIG.
5 is a SEM photograph of the composite powder surface of Example 5. FIG.
6 is a SEM photograph of the composite powder surface of Example 9. FIG.
7 is a SEM photograph of the composite powder surface of Example 10. FIG.
8 is a SEM photograph of the composite powder surface of Example 11. FIG.
9 is a SEM photograph of the composite powder surface of Example 14. FIG.
10 is a SEM photograph of the composite powder surface of Example 15. FIG.
11 is a SEM photograph of the composite powder surface of Example 16. FIG.
FIG. 12 is a graph in which the flickering feeling of the powder is evaluated based on the SE value measured with a microgloss meter.
FIG. 13 is a plot in which the sebum solidifying action of a powder is evaluated by the hardness measured with a rheometer.
Claims (8)
該基板粉末の表面に突起状に付着した酸化亜鉛粒子を含むことを特徴とする複合粉末。Flaky substrate powder expressing interference color ;
A composite powder comprising zinc oxide particles adhering in a protruding manner to the surface of the substrate powder.
Priority Applications (7)
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JP2002062748A JP3671013B2 (en) | 2002-03-07 | 2002-03-07 | COMPOSITE POWDER, MAKEUP COSMETICS COMPRISING THE SAME, AND METHOD FOR PRODUCING COMPOSITE POWDER |
PCT/JP2003/002712 WO2003074012A1 (en) | 2002-03-07 | 2003-03-07 | Composite powder, cosmetic containing the same and process for producing composite powder |
KR1020047013054A KR100982375B1 (en) | 2002-03-07 | 2003-03-07 | Composite powder, cosmetic containing the same and process for producing composite powder |
EP03710273.8A EP1481659B1 (en) | 2002-03-07 | 2003-03-07 | Composite powder, cosmetic containing the same and process for producing composite powder |
TW092104891A TWI313610B (en) | 2002-03-07 | 2003-03-07 | Compound powder, cosmetics blended with same and method for producing same |
US10/507,007 US7682604B2 (en) | 2002-03-07 | 2003-03-07 | Composite powder, cosmetics containing the same, and process for producing composite powder |
CNB038054523A CN100352417C (en) | 2002-03-07 | 2003-03-07 | Composite powder, cosmetic containing the same and process for producing composite powder |
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JP2002062748A JP3671013B2 (en) | 2002-03-07 | 2002-03-07 | COMPOSITE POWDER, MAKEUP COSMETICS COMPRISING THE SAME, AND METHOD FOR PRODUCING COMPOSITE POWDER |
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KR101066781B1 (en) | 2007-12-19 | 2011-09-21 | 가부시키가이샤 시세이도 | Manufacturing method of powder cosmetic |
JP2009280542A (en) * | 2008-05-26 | 2009-12-03 | Shiseido Co Ltd | Composite powder, its manufacturing method and cosmetic comprising the composite powder |
US20120039830A1 (en) | 2009-03-18 | 2012-02-16 | Takuma Kurahashi | Process for producing powdery composition and powdery cosmetic |
AU2010237765B2 (en) | 2009-04-16 | 2015-11-26 | Shiseido Company, Ltd. | Powdered solid cosmetic and manufacturing method therefor |
JP2011132155A (en) * | 2009-12-24 | 2011-07-07 | Miyoshi Kasei Inc | Composite powder, and cosmetic blended with the same |
JP5653697B2 (en) * | 2010-03-29 | 2015-01-14 | 富士フイルム株式会社 | Base makeup cosmetic and method for producing the same |
CN103781858A (en) * | 2011-09-09 | 2014-05-07 | Dic株式会社 | Composite pigment and method for producing same |
JP6042165B2 (en) * | 2012-10-05 | 2016-12-14 | 大東化成工業株式会社 | Method for producing composite powder |
JP6616123B2 (en) * | 2015-08-20 | 2019-12-04 | 株式会社コーセー | Makeup cosmetics |
WO2020202764A1 (en) | 2019-04-05 | 2020-10-08 | 株式会社 資生堂 | Cell activator |
EP4082619A4 (en) | 2019-12-23 | 2024-01-24 | Shiseido Company, Ltd. | Method for producing powdered solid cosmetic |
CN114845685A (en) | 2019-12-23 | 2022-08-02 | 株式会社资生堂 | Powdery solid cosmetic |
CN117320684A (en) | 2021-06-14 | 2023-12-29 | 株式会社资生堂 | Powder cosmetic and method for producing same |
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JPH09286713A (en) * | 1996-04-18 | 1997-11-04 | Sunstar Inc | Cosmetic |
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