JP2004083423A

JP2004083423A - Cosmetic

Info

Publication number: JP2004083423A
Application number: JP2002242639A
Authority: JP
Inventors: Ayumi Shinpou; 進邦　あゆみ; Shuji Maruyama; 丸山　修司
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2002-08-22
Filing date: 2002-08-22
Publication date: 2004-03-18
Anticipated expiration: 2022-08-22
Also published as: JP3892775B2

Abstract

<P>PROBLEM TO BE SOLVED: To prepare a cosmetic which gives a bright finish with transparency feeling without conspicuous unevenness, imparts a natural skin color, and is good in the feeling of use. <P>SOLUTION: This cosmetic contains a component (A) which is at least two kinds of platy coloring pigment each prepared by covering the surface of a platy powder having a refractive index lower than 2.0 with a powder having a refractive index of 2.0 or higher and further with a colorant and a component (B) which is a spherical powder having an average particle diameter of 1-20 μm. At least one of the above two kinds of platy coloring pigment has an outward appearance color in the Munsell system of 10P or higher but lower than 5YR; at least one of the other kinds has that of 5YR or higher and 10Gy or lower. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、凹凸が目立たず、透明感のある明るい仕上がりが得られ、且つ、自然な肌色を付与する化粧料に関する。
【０００２】
【従来の技術】
従来、化粧料用の着色剤として、酸化鉄顔料、紺青、群青、酸化クロム等の無機顔料、赤色２０１号、黄色４０１号、青色１号、緑色３号等の有機顔料等が用いられている。
【０００３】
これら従来の着色顔料を用いて化粧料の着色を行う場合、特に、肌色に着色する場合に、充分な着色力を有するまでこれら着色顔料を含有すると、着色顔料の光吸収により透明感がなく、仕上がりが暗くなり、肌の凹凸が目立つ傾向があるという問題がある。
【０００４】
そこで、仕上がりを明るくするために、化粧料にパール光沢を有する雲母チタン等のパール顔料を含有することが提案されている。しかしながら、パール顔料の含有量が少ない場合には、着色顔料によって雲母チタンの反射干渉光が吸収、散乱され、仕上がりを明るくする効果が充分に得られず、肌の凹凸が目立つ傾向を改善する効果も充分に得られない。反対に、仕上がりを明るくする効果が実感できるまでパール顔料の含有量を増やすと、パール顔料の反射干渉光が観察される角度と観察されない角度の間で明るさの差が大きいために、ギラツキ感を呈し、不自然な仕上がりとなり、肌の凹凸が目立ってしまうという問題がある。
【０００５】
そこで、特開平８−８１３３４号や特開２０００−１６９１８号には、着色顔料による光の吸収、散乱を抑えるために、着色顔料を直接雲母チタンに被覆した着色雲母チタンが提案されている。しかしながら、これらの着色雲母チタンを着色剤として用いた化粧料を顔全体等の広い範囲に塗布した場合には、観察者に正対する部分と正対していない部分で彩度が異なるため、不自然な仕上がりとなり凹凸が目立ってしまうという問題がある。さらに、これらの着色雲母チタンを着色顔料として用いて肌色を調色するためには、酸化鉄顔料や二酸化チタン、雲母チタン等を多量に配合する必要があり、透明感のある明るい仕上がりが得られないという問題がある。
【０００６】
【発明が解決しようとする課題】
本発明の目的は、凹凸が目立たず、透明感のある明るい仕上がりが得られ、且つ、自然な肌色を付与し、使用感も良好な化粧料を提供することにある。
【０００７】
【課題を解決するための手段】
本発明者らは、次の成分（Ａ）及び（Ｂ）：
（Ａ）屈折率２．０未満の板状粉体の表面を、屈折率２．０以上の粉体で被覆し、更に着色剤で被覆した２種以上の板状着色顔料、及び
（Ｂ）平均粒子径が１〜２０μｍである球状粉体、
を含有する化粧料であって、前記２種以上の板状着色顔料のマンセル表色系における外観色のうち、少なくとも１種が色相１０Ｐ以上５ＹＲ未満であり、少なくとも別の１種が色相５ＹＲ以上１０ＧＹ以下である化粧料が、上記課題を解決できることを見出した。
【０００８】
【発明の実施の形態】
本発明に係る化粧料は、次の成分（Ａ）及び（Ｂ）：
（Ａ）屈折率２．０未満の板状粉体の表面を、屈折率２．０以上の粉体で被覆し、更に着色剤で被覆した２種以上の板状着色顔料、及び
（Ｂ）平均粒子径が１〜２０μｍである球状粉体、
を含有する化粧料であって、前記２種以上の板状着色顔料のマンセル表色系における外観色のうち、少なくとも１種が色相１０Ｐ以上５ＹＲ未満であり、少なくとも別の１種が色相５ＹＲ以上１０ＧＹ以下である化粧料である。
【０００９】
本発明に用いる（Ａ）成分の板状着色顔料は、屈折率２．０未満の板状粉体の表面を、屈折率２．０以上の粉体で被覆し、更に着色剤で被覆している。この板状着色顔料は反射干渉光の散乱、吸収が抑えられているため、板状粉体を高い屈折率の粉体で被覆した、いわゆるパール顔料由来の反射干渉光による仕上がりを明るくする効果と、当該パール顔料表面を被覆する着色顔料による着色効果とが充分に得られる。
【００１０】
また、本発明においては板状着色顔料として、マンセル表色系における外観色が色相１０Ｐ以上５ＹＲ未満である１種又は２種以上の板状着色顔料（Ａ−１）と、マンセル表色系における外観色が色相５ＹＲ以上１０ＧＹ以下である１種又は２種以上の板状着色顔料（Ａ−２）とを組み合わせて用いる。色相が１０Ｐ以上５ＹＲ未満、好ましくは２．５ＲＰ以上２．５ＹＲ以下、特に好ましくは１０ＲＰ以上１０Ｒ以下の赤系板状着色顔料（Ａ−１）の少なくとも１種と、色相が５ＹＲ以上１０ＧＹ以下、好ましくは７．５ＹＲ以上１０Ｙ以下、特に好ましくは１０ＹＲ以上７．５Ｙ以下の黄系板状着色顔料（Ａ−２）の少なくとも１種とを組み合わせることによって、自然な肌色を実現することができる。更に必要に応じて、上記板状着色顔料（Ａ−１）又は（Ａ−２）以外の色相を有する板状着色顔料を追加することもできる。
【００１１】
（Ａ）成分の板状着色顔料、板状粉体の形状は、特に限定されず、例えば、四角板状、楕円板状、円板状、六角板状、菱形板状等のいずれの形状であっても良い。基盤となる板状粉体は、一辺の長さ（板径）が１〜５０μｍで、板径／厚さ（板状比）が２以上であり、且つ、最長径／最短径（板径比）が１０以下であることが好ましい。
【００１２】
本発明で（Ａ）成分に用いられる板状着色顔料の基盤となる板状粉体の屈折率は、２．０未満であり、より好ましくは１．８未満である。このような板状粉体としては、例えば、雲母（白雲母、黒雲母、金雲母、合成雲母等）、セリサイト、タルク、板状アルミナ粉末、板状シリカ、板状硫酸バリウム等が挙げられるが、中でも雲母が、透明性が高く、反射干渉光を散乱しないので好ましい。
【００１３】
また、上記板状着色顔料の基盤となる屈折率が２．０未満の板状粉体を被覆する粉体の屈折率は、２．０以上であり、より好ましくは２．２以上である。このような粉体としては、例えば、二酸化チタン、酸化亜鉛、黄酸化鉄、赤酸化鉄、黒酸化鉄、酸化クロム等が挙げられ、これらを組み合わせて被覆しても良い。これらの中でも特に、二酸化チタンを含むことが、屈折率が高く、被覆する着色顔料の色合いを損なわないことから好ましい。更に、膜厚及び／又は結晶型制御を目的に、必要に応じて、酸化鉄、酸化アルミニウム、又は酸化錫等の金属酸化物、水酸化鉄、水酸化アルミニウム等の金属水酸化物、又は金、銀、アルミニウム等の金属、無機酸塩又は有機酸塩等の塩等を組み合わせて被覆しても良い。
【００１４】
屈折率が２．０未満の板状粉体を屈折率が２．０以上の粉体で被覆するには、公知の方法で被覆することができ、例えば、雲母を二酸化チタンで被覆する場合には、例えば硫酸チタニル、四塩化チタン等のチタンの無機酸塩を雲母の存在下で中和法あるいは加水分解法によって分解し、含水酸化チタンあるいは二酸化チタンを析出させた後、大気中５００〜１０００℃、好ましくは７００〜９００℃の温度で焼成する方法（特公昭４３−２５６４４）等で製造される。
【００１５】
屈折率が２．０未満の板状粉体の表面を被覆する屈折率が２．０以上の粉体層は、公知の製造法において、反応系中の被覆する粉体の塩濃度、被覆する粉体の塩の加水分解温度、被覆する粉体の塩の加水分解時間、被覆される板状粉体の表面処理等の反応条件を調節することにより、被覆する屈折率が２．０以上の粉体の光学的膜厚等を変えることができ、この結果、様々な反射干渉光の色を有する板状粉体を製造することができる。
【００１６】
屈折率が２．０以上の粉体層は、１４０ｎｍ〜４００ｎｍの光学的膜厚で、屈折率が２．０未満の板状粉体の表面を被覆するのが好ましい。
【００１７】
本発明の（Ａ）成分に用いられる板状着色顔料は、屈折率２．０未満の板状粉体の表面を屈折率２．０以上の粉体で被覆したその表面を、更に着色剤で被覆する。　使用する着色剤としては、黄酸化鉄、べんがら、黒酸化鉄、紺青、群青、酸化クロム、タール系色素、天然色素等（例えば最新化粧品科学＜改訂増補２＞（日本化粧品技術者会編、薬事日報社）第３３０〜３８７頁に記載）の着色剤が挙げられる。中でも特に、酸化鉄、酸化クロム、紺青等の無機着色剤は、耐溶解性、長期保存安定性が優れるので好ましく用いられる。
【００１８】
屈折率２．０未満の板状粉体表面を屈折率２．０以上の粉体で被覆後に、さらに着色剤を被覆する方法としては、着色剤を化学反応により被覆させる方法、機械的衝撃力により物理的に被覆させる方法等がある。
【００１９】
例えば、雲母チタンに着色剤を化学反応により被覆する場合には、着色剤の原料となる無機、有機鉄化合物の水溶液中に雲母チタンを添加した後、加温して鉄化合物の加水分解物を析出させ、水洗、乾燥し、さらに必要に応じて焼成することにより、着色雲母チタンが製造できる。着色顔料の原料となる無機、有機鉄化合物としては、例えば、塩化第一鉄、塩化第二鉄、硫酸第一鉄、硫酸第二鉄、硝酸第一鉄、硝酸第二鉄、シュウ酸第一鉄、シュウ酸第二鉄アンモニウム、硫酸第二鉄アンモニウム、リン酸第二鉄、クエン酸第二鉄、乳酸第一鉄、フマル酸鉄、紺青、群青、酸化クロム、タール系色素、天然色素等を使用することができる。なお、加水分解の速度を調整するために、無機、有機鉄化合物の水溶液中に雲母チタンを添加する前又は後に水酸化ナトリウム、水酸化カリウム、アンモニア、アミン等の塩基、又はこれら塩基の水溶液を添加してもよい。
【００２０】
板状着色顔料中の着色剤の被覆率は、板状着色顔料に対し１〜２０重量％であることが好ましく、２〜１５重量％であることがより好ましい。この範囲の着色剤の被覆率であると、着色剤の吸収、散乱により、屈折率２．０以上の粉体で被覆した屈折率２．０未満の板状粉体の反射干渉光が弱められることなく、且つ、充分な着色力を示すので好ましい。
【００２１】
板状着色顔料は、必要に応じて、疎水化処理剤を用いてその表面を疎水化処理したものであってもよい。疎水化処理は、例えばシリコーン油、脂肪酸金属塩、アルキルリン酸、アルキルリン酸のアルカリ金属塩又はアミン塩、Ｎ−モノ長鎖（炭素数８〜２２）脂肪族アシル塩基性アミノ酸、パーフルオロアルキル基を有するフッ素化合物等の疎水化処理剤を用いて行うことができる。
【００２２】
また、本発明の（Ａ）成分に用いる板状着色顔料は、平均粒子径が１〜４０μｍであることが好ましく、２〜２０μｍであることがより好ましい。板状着色顔料の平均粒子径がこの範囲にあると、可視光が散乱されすぎないため透明感が損なわれず、且つ、表面反射光が多いことによるギラツキ感が発生しない上、肌上での伸び広がりが良好で、充分に肌を隠蔽しながら自然に仕上がるため、好ましい。ここで、平均粒子径は、レーザー回折／散乱法で測定した値であり、レーザー回折／散乱式粒度分布計（例えば、堀場製作所製、ＬＡ−９２０）を用いて測定することができる。
【００２３】
（Ａ）成分である板状着色顔料の含有量は、充分な着色力を持たせるために、色相が１０Ｐ以上５ＹＲ未満の板状着色顔料（Ａ−１）と色相が５ＹＲ以上１０ＧＹ以下の板状着色顔料（Ａ−２）の合計で、化粧料中に５〜５０重量％であることが好ましく、１０〜３０重量％であることがより好ましい。
【００２４】
この際に、色相が１０Ｐ以上５ＹＲ未満の板状着色顔料（Ａ−１）と色相が５ＹＲ以上１０ＧＹ以下の板状着色顔料（Ａ−２）夫々を適宜選択し、配合比を調節することによって、化粧料の外観色がマンセル表色系において色相が２．５Ｒ〜１０Ｙ、明度が３以上の範囲にあるように調整すると、明るい肌色の仕上がりが得られるので特に好ましい。
【００２５】
本発明において（Ｂ）成分として用いられる球状粉体は、平均粒子径が１〜２０μｍ、好ましくは３〜１５μｍの球状である。ここで球状粉体とは、正反射及び／又は乱反射を抑制する性質を有するものであり、その形状は、真球、略球状、回転楕円体を含み、さらに表面に凹凸がある球状粉体も含む。
【００２６】
平均粒子径が１〜２０μｍであると、化粧膜に埋もれないため、毛穴、小じわ等の凹凸の境界部をぼかして見えにくくする効果である「ぼかし」効果を発現し、毛穴、小じわ等の凹凸を目立ちにくくする。球状粉体の平均粒子径を１μｍ以上とすることにより、球状粉体が化粧膜に埋もれずに、使用感がなめらかになり、３μｍ以上とすることにより、使用感がよりなめらかになる。球状粉体の平均粒子径を２０μｍ以下とすることにより、凹凸部に均一に付着しやすいので、凹凸の境界部を見えにくくする「ぼかし」効果が充分に発現する上、使用感がざらつかず、１５μｍ以下とすることにより、さらに使用感が良くなる。ここで、平均粒子径はレーザー回折／散乱法により測定され、レーザー回折／散乱式粒度分布計（例えば、堀場製作所製、ＬＡ−９２０）を用いて測定することができる。
【００２７】
また、球状粉体の屈折率は、１．３以上１．８以下であることが好ましく、１．４以上１．６以下であることがより好ましい。球状粉体の屈折率がこの範囲内であると、ぎらつき感を充分に抑えて「ぼかし」効果を発現させることができ、さらに、より自然な仕上がり感を得ることができるので好ましい。
【００２８】
このような球状粉体の具体例としては、球状であるＳｉＯ_２、Ａｌ_２Ｏ_３等の金属酸化物、硫酸バリウム等の硫酸塩、炭酸カルシウム等の炭酸塩等の無機化合物、ポリエチレン、ポリメチルメタクリレート、ポリスチレン、ナイロン、セルロース、シリコーン及びポリウレタン等の高分子化合物等が挙げられる。球状粉体は、１種又は２種以上の混合物として使用することができる。
【００２９】
（Ｂ）成分の球状粉体は、必要に応じて（Ａ）成分と同様に、疎水化処理して使用しても良い。
【００３０】
化粧料中における（Ｂ）成分の含有量は、全組成中に０．１〜３０重量％程度とすることが好ましく、１〜２０重量％とすることが、さらに好ましい。（Ｂ）成分の球状粉体の含有量が上記範囲内であれば、凹凸を目立ちにくくする効果に優れるとともに、使用感も良好であり好ましい。
【００３１】
本発明の化粧料の着色顔料としては、上記板状着色顔料以外に、酸化鉄、酸化クロム、紺青、タール系色素等の着色顔料（例えば最新化粧品科学＜改訂増補２＞（日本化粧品技術者会編、薬事日報社）第３３０〜３８７頁に記載）が挙げられる。
【００３２】
本発明の化粧料には、上記の必須成分である（Ａ）及び（Ｂ）成分の他に、必要に応じて通常の化粧料に配合される成分を配合することができる。例えば、界面活性剤、高分子化合物、油分、体質顔料、保湿剤、防腐剤、薬剤、紫外線吸収剤、抗酸化剤、無機酸塩又は有機酸塩、香料、キレート剤、ｐＨ調整剤、水等を配合することができる。
【００３３】
本発明の化粧料は、上記各材料を用いて常法に従って製造することができ、粉末固形型、高含油粉末固形型、油分散型、水分散型、油中水乳化液、水中油乳化液等の任意の剤型とすることができる。
【００３４】
本発明の化粧料を顔面等に塗布すると、（Ａ）成分である板状着色顔料は反射干渉光の散乱、吸収が抑えられているため、板状粉体を高屈折率粉体で被覆したいわゆるパール顔料由来の反射干渉光による仕上がりを明るくする効果と、当該パール顔料表面を被覆する着色顔料による着色効果とが充分に得られると共に、（Ｂ）成分である球状粉体が、毛穴、小じわ等の凹凸部に均一に付着して、形態上の難点がある部分を目立たなくする「ぼかし」効果と、使用感をなめらかにする効果を発現するため、化粧後には毛穴、小じわ等の凹凸部の形態上の難点が目立たない効果が強化され、使用感が良好で、透明感のある明るい色を有し、肌の凹凸が目立たない自然な仕上がりが得られる。
【００３５】
特に本発明の化粧料は、色相が１０Ｐ以上５ＹＲ未満の板状着色顔料（Ａ−１）と色相が５ＹＲ以上１０ＧＹ以下の板状着色顔料（Ａ−２）夫々を適宜選択し、配合比を調節することによって、明るい肌色の仕上がりが得られる。
【００３６】
本発明の化粧料は、特にファンデーション、白粉、コンシーラー、頬紅、アイシャドウ、アイブロウ等に適用可能であり、凹凸が目立たず、且つ、透明感のある明るい自然な肌色を有する仕上がりの効果が有効に発揮される点から、ファンデーションとして非常に好適に用いることができる。
【００３７】
【実施例】
（評価方法）
１．外観色
外観色は、プレス成形可能な検体は、全皿に充填し成形した試料を、プレス成形不能な又は液状の検体は、液体／粉末用セルに充填して、測色装置（日本電子（株）：ＳＱ−３００Ｈ）で測色した。
【００３８】
２．平均粒子径の測定方法
レーザー回折／散乱式粒度分布計（堀場製作所、ＬＡ−９２０）を用いて、分散溶媒：エタノール、循環速度：４、超音波分散：１分間にて体積平均粒子径を測定した。
【００３９】
（製造例１）
雲母７５重量部をイオン交換水５００重量部に添加して撹拌して均一に分散させて得られた分散液に、濃度３０重量％の硫酸チタニル水溶液２５０重量部を加え、撹拌しながら加熱して４時間沸騰させた。放冷後、濾過、水洗し、９５０℃で焼成して、二酸化チタン（屈折率２．７１）で被覆された雲母（屈折率１．５８）（雲母チタン）１００重量部を得た。また、別に硫酸第二鉄ｎ水和物６０重量部をイオン交換水２０００重量部に溶解させ、これを０．１ｍｏｌ／Ｌ水酸化ナトリウム水溶液でｐＨ２．８に調整して得られた水溶液に、先に製造した雲母チタン１００重量部を加えて、充分に撹拌して均一に分散させた。次に、この雲母チタン分散液を撹拌しながら加熱して、６時間沸騰させた。放冷後、濾過、水洗して、黄酸化鉄で被覆された雲母チタン（黄色着色雲母チタン）１０３重量部を得た。得られた黄色着色雲母チタンの平均粒子径は８．２μｍであり、着色剤の被覆率は黄色着色雲母チタン全体に対して７重量％であった。また、外観色はマンセル表色系において４．８Ｙ、明度５．５であった。
【００４０】
（製造例２）
硫酸第二鉄ｎ水和物６０重量部をイオン交換水２０００重量部に溶解させ、これを０．１ｍｏｌ／Ｌ水酸化ナトリウム水溶液でｐＨ２．８に調整して得られた水溶液にＥＮＧＥＬＨＡＲＤ社製の雲母チタン（ＦＬＡＭＥＮＣＯ　ＳＡＴＩＮ　ＲＥＤ　４６０Ｍ）１００重量部を加えて、充分に撹拌して均一に分散させた。次に、この雲母チタン分散液を撹拌しながら加熱して、６時間沸騰させた。放冷後、濾過、水洗し、８００℃で２時間焼成して赤酸化鉄で被覆された雲母チタン（赤色着色雲母チタン）１０２重量部を得た。得られた赤色着色雲母チタンの平均粒子径は７．３μｍであり、着色剤の被覆率は赤色着色雲母チタン全体に対して７重量％であった。また、外観色はマンセル表色系において６．５Ｒ、明度５．３であった。
【００４１】
（製造例３）
セリサイト５０重量部をイオン交換水５００重量部に添加して撹拌して均一に分散させて得られた分散液に濃度３０重量％の硫酸チタニル水溶液３００重量部を加え、撹拌しながら加熱して４時間沸騰させた。放冷後、濾過、水洗し、９５０℃で焼成して、二酸化チタン（屈折率２．７１）で被覆されたセリサイト（屈折率１．５７）（セリサイトチタン）１００重量部を得た。また、別に硫酸第二鉄ｎ水和物６０重量部をイオン交換水２０００重量部に溶解させ、これを０．１ｍｏｌ／Ｌ水酸化ナトリウム水溶液でｐＨ２．８に調整して得られた水溶液に先に合成した雲母チタン１００重量部を加えて、充分に撹拌して均一に分散させた。次に、このセリサイトチタン分散液を撹拌しながら加熱して、６時間沸騰させた。放冷後、濾過、水洗し、８００℃で２時間焼成して赤酸化鉄で被覆されたセリサイトチタン（赤色着色セリサイトチタン）１０３重量部を得た。得られた赤色着色セリサイトチタンの平均粒子径は１１．２μｍであり、着色剤の被覆率は赤色着色セリサイトチタン全体に対して７重量％であった。また、外観色はマンセル表色系において２．８Ｒ、明度４．７であった。
【００４２】
（実施例１〜５、比較例１〜６）
製造例１〜３、従来の着色顔料、及び市販品の着色雲母チタンを用い、表１に示す組成で、リキッドファンデーションを調製し、該リキッドファンデーションを使用した時の「凹凸の目立ちにくさ」、「使用感（ざらつきのなさ・なめらかさ）」、「透明感のある仕上がり」、「明るい仕上がり」、「自然な肌色」を評価した。
【００４３】
＜製法＞
表４に示す組成で、成分（１）〜（１５）を混合し、得られた混合物を粉砕機に供して、粉砕した。得られた粉砕物を、７０℃で加熱した成分（２０）に添加し、７０℃でホモミキサー処理をした。これにさらに７０℃に加熱した成分（１６）〜（１９）を加え、７０℃でホモミキサー処理をして、実施例１〜５及び比較例１〜６の液状ファンデーションを得た。
【００４４】
＜評価方法＞
実施例１〜５及び比較例１〜６のリキッドファンデーションを、化粧品専用パネラー２０名が使用し、下記の５段階の評価基準及び判定基準により判定した。
【００４５】
［評価基準］
５点：非常に良好
４点：良好
３点：普通
２点：やや不良
１点：不良
［判定基準］（パネル２０人による評価基準点の平均値）
◎：４点以上〜５点以下
○：３点以上〜４点未満
△：２点以上〜３点未満
×：１点以上〜２点未満
各リキッドファンデーションの評価結果を表１に示す。
【００４６】
【表１】

【００４７】
＊１　東色ピグメント社、Ｄ−８００
＊２　東色ピグメント社、Ｄ−４００
＊３　綜研化学社、ＭＰ２２００
＊４　東色ピグメント社、Ｄ−３００
＊５　ＭＥＲＣＫ社、ＴＩＭＩＲＯＮ　ＭＰ−２５を分級し平均粒子径３８μｍとしたもの（２．４Ｙ、明度：７．２）
＊６　ＭＥＲＣＫ社、ＣＯＬＯＲＯＮＡ　ＲＥＤ　ＢＲＯＷＮを分級し平均粒子径３５μｍとしたもの（９．８Ｒ、明度：４．１）
＊７　ＭＥＲＣＫ社、ＴＩＭＩＲＯＮ　ＭＰ−１００５
表１から明らかなように、本発明の着色雲母チタンと球状粉体を含有した実施例１〜５のリキッドファンデーションは、凹凸が目立たず、且つ、透明感がある自然な肌色の明るい仕上がりで、使用感も良好であった。特に、従来の顔料を含まず、本発明の着色雲母チタンのみで着色した実施例１については、すべての評価においてより良好な結果が得られた。
【００４８】
これに対し、パール顔料を含有せず、従来の着色顔料のみで着色した比較例１のファンデーションは、凹凸は目立たなかったが、着色顔料が可視光を散乱してしまい、透明感のない暗く重たい印象の仕上がりであった。市販の着色雲母チタンを使用した比較例２は、着色効果が不充分なため肌色を調整するのに多量の着色雲母チタンを配合しなければならず、明るい仕上がりは得られるものの、不自然なギラつきがあり、結果として凹凸が目立ち、また、透明感のある仕上がりや自然な肌色において本発明品１〜５より劣るものであった。また、製造例１または２の着色雲母チタンを１種のみ含有した比較例３〜４は、肌色に調色するために従来の着色顔料を多く配合しているため、自然な肌色において本発明品１〜５に劣るものであった。平均粒子径が１μｍ未満の球状粉体を使用した比較例５では、本発明の着色雲母チタンの効果により透明感のある、明るい仕上がりで自然な肌色であったが、なめらかさがなくなり使用感が悪化した。平均粒子径が２０μｍより上の球状粉体を使用した比較例６では、本発明の着色雲母チタンの効果により透明感のある、明るい仕上がりで自然な肌色であったが、使用感がざらつき悪化した上、凹凸も少し目立つ仕上がりとなった。
【００４９】
（実施例６：クリーム状ファンデーション）
表２に示す組成に従って、成分（７）〜（１０）を７０℃で加熱撹拌後、充分混合粉砕された成分（１１）〜（１９）を添加し、７０℃でホモミキサー処理をした。これにさらに７０℃に加熱した成分（１）〜（６）を加え、７０℃でホモミキサー処理をした。これを撹拌しながら冷却し４５℃で成分（２０）を加え、室温まで冷却してクリーム状ファンデーションを得た。このクリーム状ファンデーションを実施例１〜５と同様の手法及び評価基準により評価した結果を、後述の表８に示す。
【００５０】
【表２】

【００５１】
（実施例７：固形粉末状ファンデーション）
表３に示す組成に従って、成分（１）〜（１１）を撹拌混合したものに、予め加熱しておいた成分（１２）、（１３）を添加し、混合分散し、粉砕機で粉砕し、中皿に打型して固形粉末状ファンデーションを得た。この固形粉末状ファンデーションを実施例１〜５と同様の手法及び評価基準により評価した結果を、後述の表８に示す。
【００５２】
【表３】

【００５３】
（実施例８：粉末ルース状ファンデーション）
表４に示す組成に従って、（１）〜（１１）を撹拌混合したものに、予め加熱しておいた（１２）を添加し、混合分散し、粉砕機で粉砕した後、ふるいを通して粉末ルース状ファンデーションを得た。この粉末ルース状ファンデーションを実施例１〜５と同様の手法及び評価基準により評価した結果を、後述の表８に示す。
【００５４】
【表４】

【００５５】
（実施例９：粉白粉）
表５に示す組成に従って、（１）〜（９）を撹拌混合したものに、粉砕機で粉砕した後、ふるいを通して粉白粉を得た。この粉白粉を実施例１〜５と同様の手法及び評価基準により評価した結果を、後述の表８に示す。
【００５６】
【表５】

【００５７】
（実施例１０：固形白粉）
表６に示す組成に従って、（１）〜（９）を撹拌混合したものに、予め加熱しておいた（１０）〜（１２）を添加し、混合分散した後、（１３）を噴霧し均一に混ぜた。これを粉砕機で粉砕し、中皿に打型して固形白粉を得た。この固形白粉を実施例１〜５と同様の手法及び評価基準により評価した結果を、後述の表８に示す。
【００５８】
【表６】

【００５９】
（実施例１１：水中油乳化型（Ｏ／Ｗ）クリーム）
表７に示す組成に従って、（１５）に（１２）〜（１４）を加え充分に撹拌混合し、充分に混合粉砕された（８）〜（１０）を撹拌しながら添加し分散させた。これに、加熱溶解された（１）〜（７）の油相を徐々に添加し、７０℃でホモミキサー処理して乳化させ、撹拌しながら冷却し、４５℃で（１１）を加え、室温まで冷却して、水中油乳化型（Ｏ／Ｗ）クリームを得た。この水中油乳化型（Ｏ／Ｗ）クリームを実施例１〜５と同様の手法及び評価基準により評価した結果を、後述の表８に示す。
【００６０】
【表７】

【００６１】
表８に示すように、実施例６〜１１で得られた化粧料はいずれも、凹凸が目立たず、且つ、透明感のある明るい仕上がりが得られた。自然な肌色のきめ細かな仕上がりで、かつ、額部と頬側面部の塗布色の差が非常に少ない自然な仕上がりを示し、使用感も良かった。
【００６２】
【表８】

【００６３】
【発明の効果】
本発明の化粧料は、（Ａ）成分の板状着色顔料によってパール顔料由来の光沢を損なうことなく十分な着色効果が得られると共に、（Ｂ）成分である球状粉体によって「ぼかし」効果と使用感をなめらかにする効果が得られるので、使用感が良く、透明感のある明るい色を有し、肌の凹凸が目立たない自然な仕上がりが得られる。
【００６４】
特に本発明の化粧料は、着色顔料として、色相が１０Ｐ以上５ＹＲ未満の板状着色顔料（Ａ−１）と色相が５ＹＲ以上１０ＧＹ以下の板状着色顔料（Ａ−２）を組み合わせて用いることによって、明るい肌色の仕上がりが得られる。
【００６５】
従って、本発明の化粧料を化粧を施したい部分に塗布することにより、使用感が良好で、明るく透明感があり、肌の凹凸が目立たない自然な肌色が得られる。[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a cosmetic that gives a natural skin color and has a transparent and bright finish without concavity and convexity.
[0002]
[Prior art]
Conventionally, as pigments for cosmetics, iron oxide pigments, inorganic pigments such as bitumen, ultramarine blue and chromium oxide, organic pigments such as red 201, yellow 401, blue 1 and green 3 are used. .
[0003]
When coloring these cosmetics using these conventional coloring pigments, especially when coloring to skin color, if these coloring pigments are contained until they have sufficient coloring power, there is no transparency due to the light absorption of the coloring pigments, There is a problem that the finish becomes dark and the unevenness of the skin tends to be noticeable.
[0004]
Therefore, in order to brighten the finish, it has been proposed that the cosmetic material contains a pearl pigment such as mica titanium having a pearly luster. However, when the content of the pearl pigment is small, the reflection interference light of titanium mica is absorbed and scattered by the color pigment, and the effect of brightening the finish cannot be obtained sufficiently, and the effect of improving the tendency of the unevenness of the skin to be noticeable Cannot be obtained sufficiently. On the other hand, if the pearl pigment content is increased until the effect of brightening the finish can be realized, the difference in brightness between the angle at which the reflected interference light of the pearl pigment is observed and the angle at which it is not observed is large. Presents an unnatural finish, and the unevenness of the skin becomes conspicuous.
[0005]
In view of this, Japanese Patent Application Laid-Open Nos. 8-81334 and 2000-16918 propose colored mica titanium in which mica titanium is directly coated with a colored pigment in order to suppress light absorption and scattering by the colored pigment. However, when cosmetics using these colored mica titaniums as a coloring agent are applied to a wide area such as the entire face, the saturation is different between the part facing the observer and the part not facing the observer. There is a problem that the unevenness becomes conspicuous with a smooth finish. Furthermore, in order to adjust the skin color using these colored mica titanium as a coloring pigment, it is necessary to add a large amount of iron oxide pigment, titanium dioxide, mica titanium, etc., and a bright finish with a transparent feeling can be obtained. There is no problem.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide a cosmetic material that has a concavity and convexity, a bright and transparent finish, a natural skin color, and a good feeling to use.
[0007]
[Means for Solving the Problems]
We have the following components (A) and (B):
(A) Two or more kinds of plate-like color pigments, in which the surface of a plate-like powder having a refractive index of less than 2.0 is coated with a powder having a refractive index of 2.0 or more, and further coated with a colorant;
(B) a spherical powder having an average particle diameter of 1 to 20 μm,
Of the two or more kinds of plate-like colored pigments in the Munsell color system, at least one of which is a hue of 10P or more and less than 5YR, and at least another of which is a hue of 5YR or more. It has been found that cosmetics having 10 GY or less can solve the above problems.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The cosmetic according to the present invention has the following components (A) and (B):
(A) Two or more kinds of plate-like color pigments, in which the surface of a plate-like powder having a refractive index of less than 2.0 is coated with a powder having a refractive index of 2.0 or more, and further coated with a colorant;
(B) a spherical powder having an average particle diameter of 1 to 20 μm,
Of the two or more kinds of plate-like colored pigments in the Munsell color system, at least one of which is a hue of 10P or more and less than 5YR, and at least another of which is a hue of 5YR or more. It is a cosmetic that is 10 GY or less.
[0009]
The plate-like colored pigment of component (A) used in the present invention is obtained by coating the surface of a plate-like powder having a refractive index of less than 2.0 with a powder having a refractive index of 2.0 or more and further coating with a colorant. Yes. Since this plate-like colored pigment suppresses scattering and absorption of reflected interference light, it has the effect of brightening the finish by reflection interference light derived from so-called pearl pigment, which is obtained by coating the plate-like powder with powder having a high refractive index. The coloring effect by the coloring pigment covering the surface of the pearl pigment is sufficiently obtained.
[0010]
Further, in the present invention, as the plate-like colored pigment, one or two or more plate-like colored pigments (A-1) whose appearance color in the Munsell color system has a hue of 10P or more and less than 5YR, and in the Munsell color system The appearance color is used in combination with one or more plate-like coloring pigments (A-2) having a hue of 5 YR or more and 10 GY or less. At least one red plate-like colored pigment (A-1) having a hue of 10P or more and less than 5YR, preferably 2.5RP or more and 2.5YR or less, particularly preferably 10RP or more and 10R or less, and a hue of 5YR or more and 10GY or less, A natural skin color can be realized by combining at least one kind of yellow-based plate-like colored pigment (A-2) preferably from 7.5 YR to 10 Y, particularly preferably from 10 YR to 7.5 Y. Furthermore, if necessary, a plate-like color pigment having a hue other than the plate-like color pigment (A-1) or (A-2) can be added.
[0011]
The shape of the plate-like colored pigment and the plate-like powder of the component (A) is not particularly limited, and for example, any shape such as a square plate shape, an oval plate shape, a disc shape, a hexagonal plate shape, a rhombus plate shape, There may be. The base plate powder has a side length (plate diameter) of 1 to 50 μm, a plate diameter / thickness (plate ratio) of 2 or more, and a longest diameter / shortest diameter (plate diameter ratio). ) Is preferably 10 or less.
[0012]
The refractive index of the plate-like powder serving as the base of the plate-like colored pigment used for the component (A) in the present invention is less than 2.0, more preferably less than 1.8. Examples of such plate-like powders include mica (muscovite, biotite, phlogopite, synthetic mica, etc.), sericite, talc, plate-like alumina powder, plate-like silica, plate-like barium sulfate and the like. However, mica is preferable because it has high transparency and does not scatter reflected interference light.
[0013]
In addition, the refractive index of the powder covering the plate-like powder having a refractive index of less than 2.0 which is the base of the plate-like colored pigment is 2.0 or more, more preferably 2.2 or more. Examples of such powders include titanium dioxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, and the like, and these may be coated in combination. Among these, it is particularly preferable to include titanium dioxide because it has a high refractive index and does not impair the color of the color pigment to be coated. Further, for the purpose of controlling the film thickness and / or crystal type, a metal oxide such as iron oxide, aluminum oxide or tin oxide, a metal hydroxide such as iron hydroxide or aluminum hydroxide, or gold is used as necessary. Further, a metal such as silver or aluminum, or a salt such as an inorganic acid salt or an organic acid salt may be combined and coated.
[0014]
In order to coat a plate-like powder having a refractive index of less than 2.0 with a powder having a refractive index of 2.0 or more, it can be coated by a known method, for example, when mica is coated with titanium dioxide. For example, titanium salt such as titanyl sulfate and titanium tetrachloride is decomposed by neutralization or hydrolysis in the presence of mica to precipitate hydrous titanium oxide or titanium dioxide, and then in the atmosphere 500 to 1000 It is manufactured by a method (Japanese Examined Patent Publication No. 43-25644) or the like which is fired at a temperature of 700C, preferably 700-900C.
[0015]
A powder layer having a refractive index of 2.0 or more that covers the surface of a plate-like powder having a refractive index of less than 2.0 is coated with the salt concentration of the powder to be coated in the reaction system in a known production method. By adjusting the reaction conditions such as the hydrolysis temperature of the powder salt, the hydrolysis time of the salt of the powder to be coated, and the surface treatment of the coated plate powder, the refractive index to be coated is 2.0 or more. The optical film thickness and the like of the powder can be changed. As a result, plate-like powder having various reflected interference light colors can be produced.
[0016]
The powder layer having a refractive index of 2.0 or more preferably covers the surface of a plate-like powder having an optical film thickness of 140 nm to 400 nm and a refractive index of less than 2.0.
[0017]
The plate-like colored pigment used in the component (A) of the present invention is obtained by coating the surface of a plate-like powder having a refractive index of less than 2.0 with a powder having a refractive index of 2.0 or more with a colorant. Cover. Coloring agents used include yellow iron oxide, bengara, black iron oxide, bitumen, ultramarine, chromium oxide, tar pigments, natural pigments, etc. (for example, the latest cosmetic science <revision supplement 2> (edited by Japan Cosmetic Engineers Association, Pharmaceutical Affairs) Nikkansha) (described on pages 330 to 387). Among these, inorganic colorants such as iron oxide, chromium oxide, and bitumen are particularly preferably used since they have excellent dissolution resistance and long-term storage stability.
[0018]
After coating the surface of a plate-like powder having a refractive index of less than 2.0 with a powder having a refractive index of 2.0 or more, the colorant is further coated by a chemical reaction or mechanical impact force. There is a method of physically covering with.
[0019]
For example, when a mica titanium is coated with a colorant by a chemical reaction, titanium mica is added to an aqueous solution of an inorganic or organic iron compound that is a raw material of the colorant, and then heated to heat the hydrolyzate of the iron compound. Colored titanium mica can be produced by precipitation, washing with water, drying, and firing as necessary. Examples of the inorganic and organic iron compounds that are the raw materials for the color pigment include ferrous chloride, ferric chloride, ferrous sulfate, ferric sulfate, ferrous nitrate, ferric nitrate, and oxalic acid Iron, ferric ammonium oxalate, ferric ammonium sulfate, ferric phosphate, ferric citrate, ferrous lactate, iron fumarate, bitumen, ultramarine, chromium oxide, tar dyes, natural dyes, etc. Can be used. In order to adjust the rate of hydrolysis, a base such as sodium hydroxide, potassium hydroxide, ammonia, amine, or an aqueous solution of these bases is added before or after adding mica titanium to an aqueous solution of an inorganic or organic iron compound. It may be added.
[0020]
The coverage of the colorant in the plate-like colored pigment is preferably 1 to 20% by weight, more preferably 2 to 15% by weight, based on the plate-like colored pigment. When the covering ratio of the colorant is within this range, the reflected interference light of the plate-like powder having a refractive index of less than 2.0 coated with powder having a refractive index of 2.0 or more is weakened due to absorption and scattering of the colorant. And a sufficient coloring power is exhibited.
[0021]
The plate-like colored pigment may be obtained by hydrophobizing the surface using a hydrophobizing agent as necessary. Hydrophobizing treatment includes, for example, silicone oil, fatty acid metal salt, alkyl phosphoric acid, alkali metal salt or amine salt of alkyl phosphoric acid, N-mono long chain (carbon number 8 to 22) aliphatic acyl basic amino acid, perfluoroalkyl It can be performed using a hydrophobizing agent such as a fluorine compound having a group.
[0022]
The plate-like colored pigment used for the component (A) of the present invention preferably has an average particle size of 1 to 40 μm, more preferably 2 to 20 μm. If the average particle size of the plate-like colored pigment is in this range, the visible light is not scattered too much, so that the transparency is not impaired, and the glare caused by the large amount of reflected light from the surface is not generated, and the elongation on the skin is increased. It is preferable because it spreads well and finishes naturally while sufficiently hiding the skin. Here, the average particle diameter is a value measured by a laser diffraction / scattering method, and can be measured using a laser diffraction / scattering particle size distribution analyzer (for example, LA-920 manufactured by Horiba, Ltd.).
[0023]
The content of the plate-like colored pigment as component (A) is such that the plate-like colored pigment (A-1) having a hue of 10P or more and less than 5YR and a plate having a hue of 5YR or more and 10GY or less in order to give sufficient coloring power. The total amount of the colored pigment (A-2) is preferably 5 to 50% by weight in the cosmetic, and more preferably 10 to 30% by weight.
[0024]
At this time, by appropriately selecting a plate-like color pigment (A-1) having a hue of 10P or more and less than 5YR and a plate-like color pigment (A-2) having a hue of 5YR or more and 10GY or less, and adjusting the blending ratio. It is particularly preferable to adjust the appearance color of the cosmetic so that the hue is 2.5R to 10Y and the brightness is in the range of 3 or more in the Munsell color system because a bright skin color finish can be obtained.
[0025]
The spherical powder used as the component (B) in the present invention has a spherical shape with an average particle diameter of 1 to 20 μm, preferably 3 to 15 μm. Here, the spherical powder has a property of suppressing regular reflection and / or irregular reflection, and the shape thereof includes a true sphere, a substantially spherical shape, and a spheroid, and a spherical powder having an uneven surface. Including.
[0026]
If the average particle size is 1 to 20 μm, it will not be buried in the cosmetic film, so it will exhibit a “blurring” effect, which is the effect of blurring the boundary of irregularities such as pores and fine lines, and irregularities such as pores and fine lines Make it less noticeable. When the average particle diameter of the spherical powder is 1 μm or more, the spherical powder is not buried in the decorative film, and the feeling of use is smooth, and when it is 3 μm or more, the feeling of use is smoother. By making the average particle size of the spherical powder 20 μm or less, it easily adheres uniformly to the uneven portions, so that a “blurring” effect that makes the boundary portions of the uneven portions difficult to be seen is manifested and the feeling of use is not rough. When the thickness is 15 μm or less, the usability is further improved. Here, the average particle diameter is measured by a laser diffraction / scattering method, and can be measured using a laser diffraction / scattering particle size distribution analyzer (for example, LA-920 manufactured by Horiba, Ltd.).
[0027]
The refractive index of the spherical powder is preferably 1.3 or more and 1.8 or less, and more preferably 1.4 or more and 1.6 or less. When the refractive index of the spherical powder is within this range, it is preferable since the “blurring” effect can be exerted by sufficiently suppressing the glare feeling, and more natural finish feeling can be obtained.
[0028]
As a specific example of such spherical powder, spherical SiO ₂ , Al ₂ O ₃ Inorganic compounds such as metal oxides such as sulfates such as barium sulfate, carbonates such as calcium carbonate, and polymer compounds such as polyethylene, polymethyl methacrylate, polystyrene, nylon, cellulose, silicone, and polyurethane. The spherical powder can be used as one kind or a mixture of two or more kinds.
[0029]
The spherical powder of the component (B) may be used after being hydrophobized as necessary, similarly to the component (A).
[0030]
The content of the component (B) in the cosmetic is preferably about 0.1 to 30% by weight, more preferably 1 to 20% by weight in the total composition. When the content of the spherical powder of the component (B) is within the above range, it is preferable because the effect of making the unevenness inconspicuous is excellent and the feeling of use is good.
[0031]
As the color pigments of the cosmetics of the present invention, in addition to the above plate-like color pigments, color pigments such as iron oxide, chromium oxide, bitumen, tar pigments (for example, the latest cosmetic science <Revised Supplement 2> (Japan Cosmetic Engineers Association) Ed., Yakuji Nipposha), described on pages 330 to 387).
[0032]
In addition to the above-described essential components (A) and (B), the cosmetic of the present invention can be blended with components that are blended in ordinary cosmetics as necessary. For example, surfactants, polymer compounds, oils, extenders, moisturizers, preservatives, drugs, UV absorbers, antioxidants, inorganic acid salts or organic acid salts, fragrances, chelating agents, pH adjusters, water, etc. Can be blended.
[0033]
The cosmetic of the present invention can be produced according to a conventional method using each of the above materials, and is a powder solid type, a highly oil-containing powder solid type, an oil dispersion type, a water dispersion type, a water-in-oil emulsion, an oil-in-water emulsion. It can be set as arbitrary dosage forms.
[0034]
When the cosmetic material of the present invention is applied to the face or the like, the plate-like colored pigment as component (A) is prevented from scattering and absorbing reflected interference light, so the plate-like powder is coated with a high refractive index powder. The effect of brightening the finish by the so-called reflection interference light derived from the pearl pigment and the coloring effect by the color pigment covering the surface of the pearl pigment can be sufficiently obtained, and the spherical powder as the component (B) has pores, fine lines. In order to create a "blurring" effect that uniformly adheres to uneven parts such as the form, and to make the parts that have difficulty in form inconspicuous, and to smooth the feeling of use, uneven parts such as pores and fine lines after makeup The effect of not conspicuous in terms of the form is strengthened, the feeling of use is good, the color is transparent, and the natural finish is inconspicuous.
[0035]
In particular, in the cosmetic of the present invention, the plate-like color pigment (A-1) having a hue of 10P or more and less than 5YR and the plate-like color pigment (A-2) having a hue of 5YR or more and 10GY or less are appropriately selected, and the blending ratio is set. By adjusting, a bright skin tone is obtained.
[0036]
The cosmetics of the present invention are particularly applicable to foundations, white powders, concealers, blushers, eye shadows, eyebrows, etc., and the effect of finishing with a bright natural skin color that is not conspicuous and transparent is effective. From the point of being exhibited, it can be used very suitably as a foundation.
[0037]
【Example】
(Evaluation methods)
1. Appearance color
Appearance color: press-moldable specimens are filled into a whole dish and molded specimens, press-moldable or liquid specimens are filled into liquid / powder cells, and a color measuring device (JEOL Ltd.) : SQ-300H).
[0038]
2. Measuring method of average particle size
Using a laser diffraction / scattering particle size distribution analyzer (Horiba, LA-920), the volume average particle diameter was measured in a dispersion solvent: ethanol, a circulation rate: 4, and an ultrasonic dispersion: 1 minute.
[0039]
(Production Example 1)
To a dispersion obtained by adding 75 parts by weight of mica to 500 parts by weight of ion-exchanged water and stirring and dispersing uniformly, 250 parts by weight of an aqueous solution of titanyl sulfate having a concentration of 30% by weight is added and heated while stirring. Boiled for 4 hours. After standing to cool, it was filtered, washed with water, and fired at 950 ° C. to obtain 100 parts by weight of mica (refractive index 1.58) (titanium mica) coated with titanium dioxide (refractive index 2.71). Separately, 60 parts by weight of ferric sulfate n-hydrate was dissolved in 2000 parts by weight of ion-exchanged water, and this was adjusted to pH 2.8 with 0.1 mol / L sodium hydroxide aqueous solution. 100 parts by weight of the previously produced titanium mica was added, and the mixture was sufficiently stirred and dispersed uniformly. Next, this mica titanium dispersion was heated with stirring and boiled for 6 hours. After standing to cool, it was filtered and washed with water to obtain 103 parts by weight of mica titanium (yellow colored mica titanium) coated with yellow iron oxide. The average particle diameter of the obtained yellow colored mica titanium was 8.2 μm, and the coating ratio of the colorant was 7% by weight based on the whole yellow colored mica titanium. Further, the appearance color was 4.8Y and brightness 5.5 in the Munsell color system.
[0040]
(Production Example 2)
An aqueous solution obtained by dissolving 60 parts by weight of ferric sulfate n-hydrate in 2000 parts by weight of ion-exchanged water and adjusting the pH to 2.8 with a 0.1 mol / L sodium hydroxide aqueous solution is manufactured by ENGELHARD. 100 parts by weight of mica titanium (FLAMENCO SATIN RED 460M) was added, and the mixture was sufficiently stirred and dispersed uniformly. Next, this mica titanium dispersion was heated with stirring and boiled for 6 hours. After standing to cool, it was filtered, washed with water, and calcined at 800 ° C. for 2 hours to obtain 102 parts by weight of mica titanium (red colored mica titanium) coated with red iron oxide. The average particle diameter of the obtained red colored mica titanium was 7.3 μm, and the coating ratio of the colorant was 7% by weight with respect to the entire red colored mica titanium. Further, the appearance color was 6.5R and the brightness was 5.3 in the Munsell color system.
[0041]
(Production Example 3)
Add 50 parts by weight of sericite to 500 parts by weight of ion-exchanged water, stir and disperse it uniformly, add 300 parts by weight of a 30% strength by weight aqueous solution of titanyl sulfate, and heat with stirring. Boiled for 4 hours. After standing to cool, it was filtered, washed with water, and fired at 950 ° C. to obtain 100 parts by weight of sericite (refractive index 1.57) (sericite titanium) coated with titanium dioxide (refractive index 2.71). Separately, 60 parts by weight of ferric sulfate n-hydrate was dissolved in 2000 parts by weight of ion-exchanged water, and this was adjusted to a pH of 2.8 with a 0.1 mol / L sodium hydroxide aqueous solution. 100 parts by weight of the synthesized mica titanium was added and sufficiently stirred to disperse uniformly. Next, this sericite titanium dispersion was heated with stirring and boiled for 6 hours. After standing to cool, it was filtered, washed with water, and calcined at 800 ° C. for 2 hours to obtain 103 parts by weight of sericite titanium (red colored sericite titanium) coated with red iron oxide. The average particle diameter of the obtained red colored sericite titanium was 11.2 μm, and the coating ratio of the colorant was 7% by weight with respect to the entire red colored sericite titanium. Further, the appearance color was 2.8R and lightness 4.7 in the Munsell color system.
[0042]
(Examples 1-5, Comparative Examples 1-6)
Using Production Examples 1 to 3, conventional colored pigments, and commercially available colored mica titanium, a liquid foundation was prepared with the composition shown in Table 1, and “inconspicuous unevenness” when using the liquid foundation, We evaluated “feeling of use (no roughness / smoothness)”, “transparent finish”, “bright finish”, and “natural skin color”.
[0043]
<Production method>
In the composition shown in Table 4, components (1) to (15) were mixed, and the resulting mixture was subjected to a pulverizer and pulverized. The obtained pulverized product was added to the component (20) heated at 70 ° C., and homomixed at 70 ° C. Components (16) to (19) heated to 70 ° C. were further added thereto, and homomixer treatment was performed at 70 ° C. to obtain liquid foundations of Examples 1 to 5 and Comparative Examples 1 to 6.
[0044]
<Evaluation method>
The liquid foundations of Examples 1 to 5 and Comparative Examples 1 to 6 were used by 20 panelists dedicated to cosmetics, and judged according to the following five-stage evaluation criteria and judgment criteria.
[0045]
[Evaluation criteria]
5 points: Very good
4 points: Good
3 points: normal
2 points: Somewhat bad
1 point: Defect
[Judgment Criteria] (average evaluation criteria score by 20 panelists)
A: 4 to 5 points
○: 3 points or more and less than 4 points
Δ: 2 points or more and less than 3 points
×: 1 point or more and less than 2 points
The evaluation results of each liquid foundation are shown in Table 1.
[0046]
[Table 1]

[0047]
* 1 Eastern Color Pigment, D-800
* 2 Toyo Pigment, D-400
* 3 Soken Chemical Company, MP2200
* 4 Toshi Pigment, D-300
* 5 MERCK, TIMIRON MP-25 was classified to an average particle size of 38 μm (2.4Y, brightness: 7.2)
* 6 MERCK, COLORONA RED BROWN classified to an average particle size of 35 μm (9.8R, brightness: 4.1)
* 7 MERCK, TIMIRON MP-1005
As is clear from Table 1, the liquid foundations of Examples 1 to 5 containing the colored mica titanium and the spherical powder of the present invention have a bright finish with a natural skin color that is not conspicuous and has a transparent feeling. The feeling of use was also good. In particular, better results were obtained in all the evaluations of Example 1 which did not contain a conventional pigment and was colored only with the colored mica titanium of the present invention.
[0048]
On the other hand, the foundation of Comparative Example 1 which did not contain a pearl pigment and was colored only with a conventional color pigment did not show concavity and convexity, but the color pigment scatters visible light and is dark and heavy with no transparency. It was an impressive finish. In Comparative Example 2 using commercially available colored mica titanium, the coloring effect is insufficient, so a large amount of colored mica titanium must be blended to adjust the skin color, and although a bright finish is obtained, unnatural glare As a result, unevenness was conspicuous, and the finished product with transparency and natural skin color were inferior to the products 1 to 5 of the present invention. In addition, Comparative Examples 3 to 4 containing only one kind of colored mica titanium of Production Example 1 or 2 are blended with a lot of conventional coloring pigments in order to adjust the skin color. It was inferior to 1-5. In Comparative Example 5 using a spherical powder having an average particle size of less than 1 μm, the effect of the colored mica titanium of the present invention was a transparent, bright finish and a natural skin color. It got worse. In Comparative Example 6 in which a spherical powder having an average particle diameter of more than 20 μm was used, the effect of the colored mica titanium of the present invention resulted in a transparent, bright finish and a natural skin color, but the feeling of use deteriorated. Above, the unevenness was a little noticeable.
[0049]
(Example 6: Cream foundation)
In accordance with the composition shown in Table 2, components (7) to (10) were heated and stirred at 70 ° C., and then sufficiently mixed and ground components (11) to (19) were added, followed by homomixer treatment at 70 ° C. To this, components (1) to (6) heated to 70 ° C. were added and homomixed at 70 ° C. This was cooled while stirring, component (20) was added at 45 ° C., and cooled to room temperature to obtain a creamy foundation. The results of evaluating this cream foundation by the same method and evaluation criteria as in Examples 1 to 5 are shown in Table 8 described later.
[0050]
[Table 2]

[0051]
(Example 7: Solid powdery foundation)
In accordance with the composition shown in Table 3, the components (1) to (11) were mixed with stirring, the components (12) and (13) that had been heated in advance were added, mixed and dispersed, and pulverized with a pulverizer. A solid powdery foundation was obtained by casting in an intermediate dish. The results of evaluating this solid powder foundation by the same method and evaluation criteria as in Examples 1 to 5 are shown in Table 8 described later.
[0052]
[Table 3]

[0053]
(Example 8: Powdered loose foundation)
According to the composition shown in Table 4, (1) to (11) were stirred and mixed, and (12) heated in advance was added, mixed and dispersed, pulverized with a pulverizer, and then passed through a sieve to form a powder loose shape. I got a foundation. The results of evaluating this powdery loose foundation by the same method and evaluation criteria as in Examples 1 to 5 are shown in Table 8 described later.
[0054]
[Table 4]

[0055]
(Example 9: white powder)
In accordance with the composition shown in Table 5, after stirring and mixing (1) to (9) with a pulverizer, powdered white powder was obtained through a sieve. The results of evaluating this powdered white powder by the same method and evaluation criteria as in Examples 1 to 5 are shown in Table 8 described later.
[0056]
[Table 5]

[0057]
(Example 10: solid white powder)
In accordance with the composition shown in Table 6, (10) to (12), which have been heated in advance, are added to the mixture obtained by stirring and mixing (1) to (9), and after mixing and dispersing, spray (13) to make uniform Mixed in. This was pulverized with a pulverizer and cast into an inner dish to obtain a solid white powder. The results of evaluating this solid white powder by the same method and evaluation criteria as in Examples 1 to 5 are shown in Table 8 described later.
[0058]
[Table 6]

[0059]
(Example 11: Oil-in-water emulsion type (O / W) cream)
According to the composition shown in Table 7, (12) to (14) were added to (15) and mixed with sufficient stirring, and then sufficiently mixed and ground (8) to (10) were added and dispersed while stirring. To this, the oil phase (1) to (7) dissolved by heating was gradually added, emulsified by homomixing at 70 ° C., cooled with stirring, (11) was added at 45 ° C., and room temperature To obtain an oil-in-water emulsion (O / W) cream. The results of evaluating this oil-in-water emulsion (O / W) cream by the same method and evaluation criteria as in Examples 1 to 5 are shown in Table 8 described later.
[0060]
[Table 7]

[0061]
As shown in Table 8, all of the cosmetics obtained in Examples 6 to 11 did not show concavity and convexity, and a bright finish with a transparent feeling was obtained. It was a fine finish with a natural skin color, and it showed a natural finish with very little difference in application color between the forehead and cheek side, and the feeling of use was also good.
[0062]
[Table 8]

[0063]
【The invention's effect】
The cosmetic of the present invention provides a sufficient coloring effect without impairing the luster derived from the pearl pigment by the plate-like colored pigment of the component (A), and the “blurring” effect by the spherical powder of the component (B). Since the effect of smoothing the feeling of use can be obtained, it is possible to obtain a natural finish that has a good feeling of use, a transparent bright color, and inconspicuous skin irregularities.
[0064]
In particular, the cosmetic of the present invention uses, as a color pigment, a combination of a plate-like color pigment (A-1) having a hue of 10P or more and less than 5YR and a plate-like color pigment (A-2) having a hue of 5YR or more and 10GY or less. Gives a bright skin finish.
[0065]
Therefore, by applying the cosmetic of the present invention to a portion where makeup is desired, a natural skin color that is good in use, bright and transparent, and inconspicuous on the skin is obtained.

Claims

The following components (A) and (B):
(A) Two or more kinds of plate-like color pigments, in which the surface of a plate-like powder having a refractive index of less than 2.0 is coated with a powder having a refractive index of 2.0 or more, and further coated with a colorant, and (B) A spherical powder having an average particle size of 1 to 20 μm,
Of the two or more types of plate-like colored pigments in the Munsell color system, at least one of which is a hue of 10P or more and less than 5YR, and at least another of which is a hue of 5YR or more. Cosmetics that are 10 GY or less.

The cosmetic according to claim 1, wherein a covering ratio of the colorant of the plate-like colored pigment is 1 to 20% by weight with respect to the whole plate-like colored pigment.

The cosmetic according to claim 1 or 2, wherein the cosmetic is a foundation.