JP3788680B2 - Organic-inorganic composite pigment and method for producing the same - Google Patents

Organic-inorganic composite pigment and method for producing the same Download PDF

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JP3788680B2
JP3788680B2 JP35295797A JP35295797A JP3788680B2 JP 3788680 B2 JP3788680 B2 JP 3788680B2 JP 35295797 A JP35295797 A JP 35295797A JP 35295797 A JP35295797 A JP 35295797A JP 3788680 B2 JP3788680 B2 JP 3788680B2
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organic
inorganic composite
pigment
composite pigment
inorganic
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JPH11181329A (en
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雅史 柴田
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Kao Corp
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Kao Corp
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Description

【0001】
【発明の属する技術分野】
本発明は発色が良好で分散性に優れ、かつ耐久性の高い有機無機複合顔料及びにその製造法に関するものである。
【0002】
【従来の技術及び発明が解決しようとする課題】
無機顔料の表面に有機色剤を付着させた複合顔料は、それぞれ単純に混合した場合に比べて、彩度が高く、特に化粧品に配合した場合、外観色を鮮明にする効果が高い。複合化させる有機色剤が微粒子でかつ無機顔料表面に高分散に付着していると彩度はより高くなる。
【0003】
ところで無機顔料表面に有機色剤を付着させる方法としては、無機顔料表面の電荷を利用して有機染料を吸着させる方法、あるいは多価イオンや界面活性剤を無機白色顔料表面に吸着させた後に染料を吸着させる方法が知られている。これらの方法を用いれば、無機顔料表面に、有機色剤を高分散に付着することができる。
【0004】
しかしながら、これらの方法で得られた無機有機複合顔料は水中で有機色剤が脱離しやすく、また、無機顔料表面に付着させることのできる有機色剤の量も十分とはいえない。
【0005】
一方バインダーを用いて無機顔料表面に有機色剤を付着させる方法も広く用いられている。かかるバインダーとしては水溶性高分子が一般的であるが、水溶性高分子は耐水性に劣るため、微量の水分で有機色剤が無機顔料表面から脱離したり、変色が生じる場合がある。また種々の高分子、例えばアクリル系高分子をバインダーに用いる方法も知られているが(特開平1−294611号公報)、特に微粒子の有機顔料を用いると溶媒中で凝集をおこしやすく、彩度の向上効果はあまり高くない。
【0006】
したがって本発明は、彩度が高く、特に化粧品に配合した場合色調を鮮明にする効果が高く、更に耐久性にも優れた有機無機複合顔料を提供することを目的とする。
【0007】
【課題を解決するための手段】
本発明者らは上記目的を達成すべく鋭意研究した結果、高吸油性無機顔料、微粒子有機色剤及び特定のオルガノポリシロキサンを含有した有機無機複合顔料が、彩度が高く、化粧品に配合することにより外観色を鮮明にすることができるとともに、耐久性にも優れていることを見出し、本発明を完成させた。
【0008】
すなわち本発明は、次の成分(a)〜(c)、
(a)吸油量(JIS K5101測定法による、以下同じ)が50〜300mL/100gである、高吸油性無機顔料、(b)微粒子有機色剤及び(c)環状シリコーンに溶解するオルガノポリシロキサン又はその誘導体を含有する有機無機複合顔料;
並びにオルガノポリシロキサン又はその誘導体を環状シリコーンに溶解し、得られた溶液に有機色剤を添加して微粒化処理した後、高吸油性無機顔料を含浸させ、次いで環状シリコーンを揮発させて除去することを特徴とする有機無機複合顔料の製造法を提供するものである。
【0009】
【発明の実施の形態】
本発明において(a)成分は、吸油量が50〜300mL/100g、好ましくは70〜250mL/100gの高吸油性無機顔料である。50mL/100g未満では高吸油性無機顔料の表面に有機色剤が均一に付着せず、また300mL/100gを超えると油性固形化粧料に用いた場合にオイル量が少なくなり感触が悪化する。かかる高吸油性無機顔料としては例えば、マイカ、タルク、ベントナイト及びゼオライト等の無機鉱物、酸化チタン、酸化亜鉛、酸化ジルコニア、チッ化ホウ素、アルミナ及びシリカ等の金属酸化物等が挙げられる。本発明においてはこれらを1種又は2種以上用いることができる。このうち有機色剤の発色を高める効果が高いことから、酸化チタン、酸化亜鉛、酸化ジルコニア、チッ化ホウ素、シリカ及びアルミナが好ましい。また2種以上の組み合わせとしては、例えば酸化亜鉛と酸化チタン、シリカとアルミナ、あるいはシリカと酸化チタン等が挙げられる。
【0010】
かかる(a)成分の平均粒径(走査型電子顕微鏡で観察、以下同じ)は、1.0〜50μmであることが好ましく、2.0〜15μmであることが特に好ましい。1.0〜50μmであれば彩度の高い有機無機複合顔料を得ることができる。
【0011】
成分(b)の有機色剤としては特に制限はなく、例えば赤色2号、赤色3号、赤色102号、赤色104号、赤色105号、赤色106号、黄色4号、黄色5号、緑色3号、青色1号、青色2号、赤色227号、赤色230号、赤色231号、赤色232号、橙色205号、橙色207号、黄色202号、黄色203号、緑色201号、緑色204号、緑色205号、青色205号、赤色201号、赤色401号、赤色502号、赤色503号、赤色504号、赤色506号、橙色402号、黄色402号、黄色403号、黄色406号、黄色407号、緑色402号、紫色401号、黒色401号等の酸性染料、かかる酸性染料のアルミニウム、バリウム及びジルコニウム塩などのレーキ顔料、赤色213号、赤色214号等の塩基性染料、赤色215号、赤色218号、赤色223号、橙色201号、橙色206号、黄色201号、黄色204号、緑色202号、紫色201号、赤色501号、赤色505号、橙色403号、黄色404号、黄色405号、青色403号等の油溶性染料、赤色226号、青色201号、青色204号等の建染染料、赤色202号、赤色213号、赤色404号、赤色405号、橙色203号、橙色204号、橙色401号などの顔料、並びにラッカイン酸、カルミン酸、シコニン、ベーターカロチン、シソニン、ルチン、クロロフィル等を挙げることができる。かかる有機色剤は1種又は2種以上を組合せて用いることができる。
【0012】
成分(b)の有機色剤は微粒子であることが必要であり、その粒径は環状シリコーン中に分散された状態で0.001〜1.0μmであることが好ましく、0.01〜0.5μmであることが特に好ましい。0.001μm未満では着色力が必ずしも十分でなく、1.0μmより大きいと彩度がやや劣る。なお、色剤微粒子の平均粒径はレーザードップラー型粒子径測定器などを用いて測定することが可能である。
【0013】
本発明において(c)成分は、環状シリコーンに溶解するオルガノポリシロキサン又はその誘導体である。本発明において環状シリコーンとは、30〜50℃、好ましくは20〜60℃で液体であり、かつ100℃、10mmHgで揮発するものをいう。かかる環状シリコーンとしては例えば、オクタメチルシクロテトラシロキサン及びデカメチルシクロペンタシロキサン等を挙げることができる。また市販品としては例えば、SH244、SH245(東レ・ダウコーニング(株))等を挙げることができる。
【0014】
また環状シリコーンに溶解するとは、オルガノポリシロキサン又はその誘導体が、常温又は環状シリコーンの沸点以下で環状シリコーンに5重量%以上、好ましくは10重量%以上溶解することをいう。
【0015】
上記環状シリコーンに溶解するものであればオルガノポリシロキサン又はその誘導体の構造に特に制限はないが、より好ましくは、分子内に親水性セグメントを有するものが、有機色剤の分散性を向上させ、無機顔料表面へ均一に付着させる上で適している。このような親水性セグメントとしては、例えば末端を封鎖されたN−アシルアルキルイミン、ポリアルキレングリコール、ポリアルキレングリコールモノアルキルエーテル、アクリル酸、メタクリル酸、N,N−ジメチルアクリルアミド、ジメチルアミノエチルメタクリレート、四級ジメチルアミノエチルメタクリレート、メタクリルアミド、N−t−ブチルアクリルアミド、マレイン酸、無水マレイン酸、無水マレイン酸の半エステル、クロトン酸、イタコン酸、アクリルアミド、アクリレートアルコール類、ヒドロキシエチルメタクリレート、ジアリルジメチルアンモニウムクロライド、ビニルピロリドン、ビニルエーテル類、ビニルピリジン、ビニルイミダゾール、スチレンスルホネート、アリルアルコール、ビニルアルコール、ビニルカプロラクタム、N−アルキレンカルボベタイン及び糖由来残基などが挙げられる。
【0016】
このうちオルガノポリシロキサン誘導体中の親水性セグメントとオルガノポリシロキサンセグメントの構成比(重量)が1/50〜20/1であり、オルガノポリシロキサンの重量平均分子量が500〜500000の共重合体であることが、有機色剤の分散性を向上させる上で特に好ましい。
更に、安定性、安全性の点より、オルガノポリシロキサン・N−アシルアルキルイミン共重合体であることが最も好ましい。
【0017】
本発明の有機無機複合顔料は、成分(a)〜(c)が複合化した顔料であり、このうち(c)成分をバインダーとして(a)成分表面に(b)成分が高分散に付着したものであることが、彩度、化粧品等に配合した場合の色の鮮明さ及び耐久性等の観点から好ましい。また本発明の有機無機複合顔料の平均粒径は、彩度や耐久性向上等の観点から1.0〜50μm、特に2.0〜15μmであることが好ましい。
【0018】
次に本発明の有機無機複合顔料の製造方法について説明する。まずオルガノポリシロキサン又はその誘導体を環状シリコーン溶液に添加し、適宜撹拌、加熱してオルガノポリシロキサン又はその誘導体を完全に溶解する。次いでこの溶液に(b)成分を添加し、適宜撹拌して均一に分散させる。あるいは微粒化されていない有機色剤を添加し、かかる溶液中で有機顔料の微粒化処理を行ってもよい。微粒化処理は、例えばビーズミル、サンドミル、ボールミル、マイクロフルイダイザー、又はナノマイザー等を用いて常法にしたがって行うことができる。
【0019】
上記で得られた混合液中の(b)成分の含有量は、0.01〜50重量%、特に0.1〜20重量%であることが好ましい。0.01重量%未満では顔料の量が少ないため望ましい色調を得ることが困難であり、50重量%より多いと混合液中での有機色剤の分散が困難となる。また上記で得られた混合液中において、オルガノポリシロキサン又はその誘導体の(b)成分に対する含有量は、1〜100重量%、特に5〜50重量%であることが好ましい。1重量%未満では(a)成分表面に(b)成分を安定的に付着させることが困難となり、100重量%より多いと有機無機複合顔料が凝集を起こし易い。
【0020】
次いで上記で得られた混合液に、(a)成分を含浸させる。このとき上記混合液は含浸させる(a)成分に対して体積比で0.1〜1000、特に0.5〜100であることが好ましい。0.1未満では(a)成分表面に(b)成分が均一に付着し難く、1000より大きいと環状シリコーンを揮発させて除去するのに長時間を要し、操作が煩雑となる。その後環状シリコーンを常圧又は減圧下で揮発させて除去することにより、本発明の有機無機複合顔料を得ることができる。
【0021】
本発明の有機無機複合顔料は、例えば化粧料、塗料、プラスチック、インキ、クレヨン、絵の具、トナー、日用雑貨品及び装飾品等に使用することができる。このうち化粧料として使用することが好ましい。化粧料としては、例えば口紅、アイシャドウ、頬紅、ネイルエナメル、アイライナー、マスカラ、ファンデーション及び乳液等が挙げられる。
【0022】
上記用途に用いるにあたっては、本発明の有機無機複合顔料に、必要に応じて通常の有機又は無機顔料に対して行われている表面処理、例えば金属石鹸、高級脂肪酸、界面活性剤、シリカ、アルミナ、酸化チタン、ジルコニア、チッ化ケイ素、シロキサン、ポリシロキサン、ポリシロキサン誘導体、フッ素系高分子、アミノ酸誘導体、フィブロイン等のタンパク質、PMMA、ナイロン等の高分子等による表面処理を行うことができる。
【0023】
【実施例】
次に実施例を示して本発明を更に詳細に説明するが、本発明は以下の実施例に限定されるものではない。
【0024】
実施例1
環状シリコーン(SH244、東レ・ダウコーニング(株))95重量部にポリ(N−プロピオニルエチレンイミン)変性シリコーン(花王(株))2.5重量部を添加して完全に溶解させた。得られた溶液に赤色202号(癸巳化成)2.5重量部を添加し、サンドミルで処理して微粒子有機色剤を分散させた。得られた分散液中の赤色202号の平均粒径は0.3μmであった。次いでこの分散液に10重量部の高吸油性シリカ(サンスフェアH122、吸油量205mL/100g、平均粒径12μm、旭硝子)を添加し、十分撹拌して含浸させた。次いでロータリーポンプを用い、80℃、減圧条件下で環状シリコーンを揮発除去し、有機無機複合顔料を得た。得られた有機無機複合顔料の平均粒径は12μmであった。
【0025】
実施例2
高重合メチルポリシロキサンを環状シリコーンに溶解した溶液(XF49、東芝シリコーン)10重量部と環状シリコーン(SH245、東レ・ダウコーニング(株))90重量部とを混合した溶液(樹脂含量1.5重量%)に、赤色104号アルミニウムレーキ(癸巳化成)3.0重量部を添加してマイクロフルイダイザーで処理して微粒子有機色剤を分散させた。得られた分散液中の赤色104号アルミニウムレーキの平均粒径は0.6μmであった。次いでこの分散液に10.3重量部の高吸油性酸化チタン(チタンマイクロビード1511、吸油量75mL/100g、平均粒径7μm、触媒化成)を添加し、十分撹拌して含浸させた。次いでロータリーポンプを用い、80℃、減圧条件下で環状シリコーンを揮発除去し、有機無機複合顔料を得た。得られた有機無機複合顔料の平均粒径は8μmであった。
【0026】
実施例3
環状シリコーン(SH244、東レ・ダウコーニング(株))95重量部にアクリル酸・メタクリル酸ブチル・ポリジメチルシロキサン共重合体(花王(株))にて合成)2.5重量部を添加して完全に溶解させた。得られた溶液に、赤色202号(癸巳化成)2.5重量部を添加し、サンドミルで処理して微粒子有機色剤を分散させた。得られた分散液中の赤色201号の平均粒径は0.5μmであった。次いでこの分散液に10重量部の高吸油性シリカ(サンスフェアH122、平均粒子系12μm、旭硝子、吸油量205mL/100g)を添加し、十分攪拌して含浸させた。次いでロータリーポンプを用い、80℃、減圧条件で環状シリコーンを揮発除去し、有機無機複合粉体を得た。得られた有機無機複合顔料の平均粒径は12μmであった。
【0027】
比較例1
環状シリコーン(SH244、東レ・ダウコーニング(株))97.5重量部に赤色202号(癸巳化成)2.5重量部を添加し、サンドミルで処理して微粒子有機色剤を分散させた。得られた分散液中の赤色202号の平均粒径は0.8μmであった。次いでこの分散液に10重量部の高吸油性シリカ(サンスフェアH122、吸油量205mL/100g、平均粒径12μm、旭硝子)を添加し、十分撹拌して含浸させた。次いでロータリーポンプを用い、80℃、減圧条件下で環状シリコーンを揮発除去し、有機無機複合顔料を得た。得られた有機無機複合顔料の平均粒径は13μmであった。
【0028】
比較例2
実施例2において得られた分散液に10.3重量部の酸化チタン(CR50、吸油量20mL/100g、平均粒径0.8μm、石原産業)を添加し、緩やかに撹拌した後、ロータリーポンプを用い、80℃、減圧条件下で環状シリコーンを揮発除去し、有機無機複合顔料を得た。得られた有機無機複合顔料の平均粒径は0.8μmであった。
【0029】
比較例3
エタノール95重量部にN−メタクリルロイルエチルN,N−ジメチルアンモニウム・α−N−メチルカルボキシベタイン・メタクリル酸ブチル共重合体(ユカフォーマーAM−75、三菱油化)2.5重量部を添加して完全に溶解させた。得られた溶液に赤色202号(癸巳化成)2.5重量部を添加し、サンドミルで処理して微粒子有機色剤を分散させた。得られた分散液中の赤色201号の平均粒径は0.9μmであった。次いでこの分散液に10重量部の高吸油性シリカ(サンスフェアH122、平均粒子系12μm、旭硝子、吸油量205mL/100g)を添加し、十分攪拌して含浸させた。次いで、ロータリポンプを用い、80℃、減圧条件でエタノールを揮発除去し、有機無機複合粉体を得た。得られた有機無機複合顔料の平均粒径は12μmであった。
【0030】
試験例1
各実施例及び比較例で得られた各有機無機複合顔料の表面を走査型電子顕微鏡を用いて観察し、有機色剤の無機顔料表面への付着状態を以下の評価基準で評価した。結果を表1に示す。
(評価基準)
○:有機色剤がほぼ均一に無機顔料表面に付着
△:有機色剤がやや凝集して無機顔料表面に付着
×:有機色剤が無機顔料表面にほとんど付着せず
【0031】
試験例2
各実施例及び比較例で得られた各有機無機複合顔料0.5gを水50mLに入れ、スターラーで3時間強く撹拌した後乾燥した。次いでその表面を走査型電子顕微鏡を用いて観察し、有機顔料の無機顔料表面への残存状態を以下の評価基準で評価した。結果を表1に示す。
(評価基準)
○:有機色剤の大部分が無機顔料表面に残存
△:有機色剤の一部が無機顔料表面に残存
×:有機色剤が無機顔料表面にほとんど残存せず
【0032】
試験例3
各実施例及び比較例で得られた各有機無機複合顔料1gとスクワラン5mlとをペイントナイフを用いて混合し、測色計(Σ80、日本電色工業社製)にて彩度(C値)を測定した。対照として各実施例又は比較例で用いた各有機色剤及び無機顔料をそれぞれ同一の比率で混合したものを用い、上記と同様にして彩度を測定し、以下の評価基準で彩度の向上効果を評価した。結果を表1に示す。
(評価基準)
○:対照と比較してC値が5%以上上昇した
△:対照と比較したC値の差が5%未満
×:対照と比較してC値が5%以上低下した
【0033】
試験例4
各実施例及び比較例で得られた各有機無機複合顔料0.5gを直鎖パラフィン系溶剤50mlに添加し、超音波分散機を用いて30秒間分散させ、5分間静置した後、分散状態を以下の評価基準で目視評価した。結果を表1に示す。
(評価基準)
○:有機無機複合顔料がほぼ均一に分散
△:有機無機複合顔料が一部分散
×:有機無機複合顔料がほぼ完全に沈降
【0034】
【表1】

Figure 0003788680
【0035】
表1より、実施例1及び2は比較例1及び2より優れており、特に実施例1はいずれの項目でも優れていることが確認された。
【0036】
配合例1
表2に示す配合でアイシャドウを作成した。すなわち粉体成分を粉砕器で混合し、更に油分を添加して均一になるまで混合した。これをふるいに通した後、型に入れて圧縮し、固形に成型してアイシャドウとした。得られたアイシャドウは彩度が高く、色調が鮮明で、更に耐久性にも優れたものであった。
【0037】
【表2】
(成分) (重量%)
タルク 16.7
マイカ 10.0
ステアリン酸亜鉛 7.0
有機無機複合顔料(実施例1) 18.0
酸化チタン 3.0
群青 0.3
雲母チタン 25.0
流動パラフィン 10.0
ミリスチン酸イソプロピル 10.0
【0038】
【発明の効果】
本発明の方法により製造した有機無機複合顔料は、有機顔料と無機顔料とが複合化したものであり、彩度が高く、特に化粧料に配合した場合色調が鮮明となり、かつ耐久性にも優れたものである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an organic-inorganic composite pigment having good color development, excellent dispersibility, and high durability, and a method for producing the same.
[0002]
[Prior art and problems to be solved by the invention]
A composite pigment having an organic colorant attached to the surface of an inorganic pigment has a higher chroma than in the case of simple mixing, and is particularly effective in sharpening the appearance color when blended in cosmetics. If the organic colorant to be combined is a fine particle and adheres to the surface of the inorganic pigment with high dispersion, the saturation becomes higher.
[0003]
By the way, as a method of attaching the organic colorant to the surface of the inorganic pigment, a method of adsorbing an organic dye using the charge on the surface of the inorganic pigment, or a dye after adsorbing polyvalent ions or a surfactant to the surface of the inorganic white pigment is used. A method of adsorbing is known. If these methods are used, the organic colorant can be adhered to the surface of the inorganic pigment with high dispersion.
[0004]
However, the organic / organic composite pigments obtained by these methods tend to release the organic colorant in water, and the amount of the organic colorant that can be attached to the surface of the inorganic pigment is not sufficient.
[0005]
On the other hand, a method of attaching an organic colorant to the surface of an inorganic pigment using a binder is also widely used. As such a binder, a water-soluble polymer is generally used. However, since the water-soluble polymer is inferior in water resistance, the organic colorant may be detached from the surface of the inorganic pigment or may be discolored with a small amount of water. In addition, a method using various polymers such as acrylic polymers as a binder is also known (Japanese Patent Laid-Open No. 1-294411). However, when fine organic pigments are used, aggregation is likely to occur in a solvent, and saturation is increased. The improvement effect is not so high.
[0006]
Accordingly, an object of the present invention is to provide an organic-inorganic composite pigment that has high chroma, has a high effect of sharpening the color tone when blended with cosmetics, and is excellent in durability.
[0007]
[Means for Solving the Problems]
As a result of intensive research aimed at achieving the above-mentioned object, the present inventors have found that an organic-inorganic composite pigment containing a highly oil-absorbing inorganic pigment, a fine-particle organic colorant and a specific organopolysiloxane has high chroma and is incorporated into cosmetics. As a result, it was found that the appearance color can be clarified and the durability is excellent, and the present invention has been completed.
[0008]
That is, the present invention includes the following components (a) to (c),
(A) high oil-absorbing inorganic pigment having an oil absorption (according to JIS K5101 measurement method, the same shall apply hereinafter) of 50 to 300 mL / 100 g, (b) a fine particle organic colorant and (c) an organopolysiloxane dissolved in a cyclic silicone or An organic-inorganic composite pigment containing the derivative;
In addition, an organopolysiloxane or a derivative thereof is dissolved in a cyclic silicone, and an organic colorant is added to the resulting solution for atomization, followed by impregnation with a highly oil-absorbing inorganic pigment, and then the cyclic silicone is volatilized and removed. The present invention provides a method for producing an organic-inorganic composite pigment.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the component (a) is a highly oil-absorbing inorganic pigment having an oil absorption of 50 to 300 mL / 100 g, preferably 70 to 250 mL / 100 g. If it is less than 50 mL / 100 g, the organic colorant does not uniformly adhere to the surface of the highly oil-absorbing inorganic pigment, and if it exceeds 300 mL / 100 g, the amount of oil is reduced when used in an oily solid cosmetic, and the feeling deteriorates. Examples of such highly oil-absorbing inorganic pigments include inorganic minerals such as mica, talc, bentonite and zeolite, and metal oxides such as titanium oxide, zinc oxide, zirconia oxide, boron nitride, alumina and silica. In the present invention, one or more of these can be used. Of these, titanium oxide, zinc oxide, zirconia oxide, boron nitride, silica, and alumina are preferred because of the high effect of enhancing the color development of the organic colorant. Examples of combinations of two or more include zinc oxide and titanium oxide, silica and alumina, or silica and titanium oxide.
[0010]
The average particle size (observed with a scanning electron microscope, the same applies hereinafter) of the component (a) is preferably 1.0 to 50 μm, and particularly preferably 2.0 to 15 μm. If it is 1.0-50 micrometers, an organic-inorganic composite pigment with high chroma can be obtained.
[0011]
There is no restriction | limiting in particular as an organic colorant of a component (b), For example, red No. 2, red No. 3, red No. 102, red No. 104, red No. 105, red No. 106, yellow No. 4, yellow No. 5, green 3 No. 1, Blue No. 1, Blue No. 2, Red No. 227, Red No. 230, Red No. 231, Red No. 232, Orange No. 205, Orange No. 207, Yellow No. 202, Yellow No. 203, Green No. 201, Green No. 204, Green 205, Blue 205, Red 201, Red 401, Red 502, Red 503, Red 504, Red 506, Orange 402, Yellow 402, Yellow 403, Yellow 406, Yellow 407 No., green 402, purple 401, black 401, etc. acid dyes, lake pigments such as aluminum, barium and zirconium salts of such acid dyes, red 213, red 214 etc. basic dyes Red 215, Red 218, Red 223, Orange 201, Orange 206, Yellow 201, Yellow 204, Green 202, Purple 201, Red 501, Red 505, Orange 403, Yellow 404 No., oil-soluble dyes such as yellow 405, blue 403, vat dyes such as red 226, blue 201, blue 204, red 202, red 213, red 404, red 405, orange 203 No., orange 204, orange 401, and the like, as well as lacqueric acid, carminic acid, shikonin, beta-carotene, shisonin, rutin, chlorophyll and the like. Such organic colorants can be used alone or in combination of two or more.
[0012]
The organic colorant of component (b) needs to be fine particles, and its particle size is preferably 0.001 to 1.0 μm in a state dispersed in cyclic silicone, and 0.01 to 0.00. A thickness of 5 μm is particularly preferable. If it is less than 0.001 μm, the coloring power is not always sufficient, and if it is more than 1.0 μm, the saturation is slightly inferior. The average particle size of the colorant fine particles can be measured using a laser Doppler type particle size measuring device or the like.
[0013]
In the present invention, the component (c) is an organopolysiloxane or a derivative thereof that dissolves in the cyclic silicone. In the present invention, the cyclic silicone means a liquid which is liquid at 30 to 50 ° C., preferably 20 to 60 ° C., and volatilizes at 100 ° C. and 10 mmHg. Examples of the cyclic silicone include octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane. Examples of commercially available products include SH244 and SH245 (Toray Dow Corning Co., Ltd.).
[0014]
The term “dissolved in cyclic silicone” means that organopolysiloxane or a derivative thereof is dissolved in cyclic silicone at 5% by weight or more, preferably 10% by weight or more at room temperature or below the boiling point of cyclic silicone.
[0015]
The structure of the organopolysiloxane or derivative thereof is not particularly limited as long as it dissolves in the cyclic silicone, but more preferably, the one having a hydrophilic segment in the molecule improves the dispersibility of the organic colorant, Suitable for uniform adhesion to the surface of inorganic pigments. Examples of such hydrophilic segments include N-acylalkylimines blocked at the end, polyalkylene glycol, polyalkylene glycol monoalkyl ether, acrylic acid, methacrylic acid, N, N-dimethylacrylamide, dimethylaminoethyl methacrylate, Quaternary dimethylaminoethyl methacrylate, methacrylamide, Nt-butylacrylamide, maleic acid, maleic anhydride, half-ester of maleic anhydride, crotonic acid, itaconic acid, acrylamide, acrylate alcohols, hydroxyethyl methacrylate, diallyldimethylammonium Chloride, vinyl pyrrolidone, vinyl ethers, vinyl pyridine, vinyl imidazole, styrene sulfonate, allyl alcohol, vinyl alcohol, vinyl Caprolactam, etc. N- alkylene carbobetaine and sugar derived residues.
[0016]
Among these, the composition ratio (weight) of the hydrophilic segment and the organopolysiloxane segment in the organopolysiloxane derivative is 1/50 to 20/1, and the weight average molecular weight of the organopolysiloxane is a copolymer of 500 to 500,000. Is particularly preferable for improving the dispersibility of the organic colorant.
Furthermore, from the viewpoint of stability and safety, an organopolysiloxane / N-acylalkylimine copolymer is most preferable.
[0017]
The organic-inorganic composite pigment of the present invention is a pigment in which the components (a) to (c) are complexed. Among these, the component (c) is used as a binder and the component (b) adheres to the surface of the component (a) with high dispersion. It is preferable from the viewpoints of color clarity and durability when blended in a chroma, cosmetics and the like. Moreover, the average particle diameter of the organic-inorganic composite pigment of the present invention is preferably 1.0 to 50 μm, particularly preferably 2.0 to 15 μm, from the viewpoint of saturation and durability improvement.
[0018]
Next, the manufacturing method of the organic inorganic composite pigment of this invention is demonstrated. First, an organopolysiloxane or a derivative thereof is added to a cyclic silicone solution, and appropriately stirred and heated to completely dissolve the organopolysiloxane or a derivative thereof. Next, the component (b) is added to this solution, and the mixture is properly stirred and dispersed uniformly. Or the organic colorant which is not atomized may be added and the atomization process of the organic pigment may be performed in this solution. The atomization treatment can be performed according to a conventional method using, for example, a bead mill, a sand mill, a ball mill, a microfluidizer, or a nanomizer.
[0019]
The content of the component (b) in the mixed solution obtained above is preferably 0.01 to 50% by weight, particularly preferably 0.1 to 20% by weight. If it is less than 0.01% by weight, it is difficult to obtain a desired color tone because the amount of the pigment is small, and if it exceeds 50% by weight, it is difficult to disperse the organic colorant in the mixed solution. In the mixed solution obtained above, the content of the organopolysiloxane or its derivative with respect to the component (b) is preferably 1 to 100% by weight, particularly preferably 5 to 50% by weight. If the amount is less than 1% by weight, it is difficult to stably attach the component (b) to the surface of the component (a). If the amount is more than 100% by weight, the organic-inorganic composite pigment tends to aggregate.
[0020]
Next, the mixture (a) obtained above is impregnated with the component (a). At this time, the liquid mixture is preferably in a volume ratio of 0.1 to 1000, particularly 0.5 to 100 with respect to the component (a) to be impregnated. If it is less than 0.1, the component (b) hardly adheres uniformly to the surface of the component (a). If it exceeds 1000, it takes a long time to volatilize and remove the cyclic silicone, and the operation becomes complicated. Thereafter, the cyclic silicone is volatilized and removed under normal pressure or reduced pressure, whereby the organic-inorganic composite pigment of the present invention can be obtained.
[0021]
The organic-inorganic composite pigment of the present invention can be used, for example, in cosmetics, paints, plastics, inks, crayons, paints, toners, daily goods and decorative products. Among these, it is preferable to use it as a cosmetic. Examples of cosmetics include lipstick, eye shadow, blusher, nail enamel, eyeliner, mascara, foundation, and emulsion.
[0022]
When used in the above applications, the organic-inorganic composite pigment of the present invention may be subjected to surface treatment performed on a normal organic or inorganic pigment as necessary, for example, metal soap, higher fatty acid, surfactant, silica, alumina. Surface treatment can be performed with titanium oxide, zirconia, silicon nitride, siloxane, polysiloxane, polysiloxane derivatives, fluorine-based polymers, amino acid derivatives, proteins such as fibroin, polymers such as PMMA, nylon, and the like.
[0023]
【Example】
EXAMPLES Next, although an Example is shown and this invention is demonstrated further in detail, this invention is not limited to a following example.
[0024]
Example 1
To 95 parts by weight of cyclic silicone (SH244, Toray Dow Corning Co., Ltd.), 2.5 parts by weight of poly (N-propionylethyleneimine) modified silicone (Kao Co., Ltd.) was added and completely dissolved. To the resulting solution, 2.5 parts by weight of Red No. 202 (Hatsukasei) was added and treated with a sand mill to disperse the fine particle organic colorant. The average particle size of Red No. 202 in the obtained dispersion was 0.3 μm. Next, 10 parts by weight of highly oil-absorbing silica (Sunsphere H122, oil absorption 205 mL / 100 g, average particle size 12 μm, Asahi Glass) was added to this dispersion and impregnated with sufficient stirring. Next, the cyclic silicone was removed by volatilization at 80 ° C. under reduced pressure using a rotary pump to obtain an organic-inorganic composite pigment. The average particle size of the obtained organic-inorganic composite pigment was 12 μm.
[0025]
Example 2
A solution (resin content 1.5 weight) of 10 parts by weight of a solution of highly polymerized methylpolysiloxane dissolved in cyclic silicone (XF49, Toshiba Silicone) and 90 parts by weight of cyclic silicone (SH245, Toray Dow Corning Co., Ltd.) %) Was added with 3.0 parts by weight of red No. 104 aluminum lake (Kai Kasei) and treated with a microfluidizer to disperse the fine particle organic colorant. The average particle size of red No. 104 aluminum lake in the obtained dispersion was 0.6 μm. Next, 10.3 parts by weight of highly oil-absorbing titanium oxide (titanium microbead 1511, oil absorption 75 mL / 100 g, average particle size 7 μm, catalyst conversion) was added to this dispersion, and the mixture was sufficiently stirred and impregnated. Next, the cyclic silicone was removed by volatilization at 80 ° C. under reduced pressure using a rotary pump to obtain an organic-inorganic composite pigment. The average particle diameter of the obtained organic-inorganic composite pigment was 8 μm.
[0026]
Example 3
A total of 95 parts by weight of cyclic silicone (SH244, Toray Dow Corning Co., Ltd.) and 2.5 parts by weight of acrylic acid / butyl methacrylate / polydimethylsiloxane copolymer (synthesized by Kao Corporation) are completely added. Dissolved in. To the resulting solution, 2.5 parts by weight of Red No. 202 (Hana Kasei) was added and treated with a sand mill to disperse the fine organic colorant. The average particle size of Red No. 201 in the obtained dispersion was 0.5 μm. Next, 10 parts by weight of highly oil-absorbing silica (Sunsphere H122, average particle size 12 μm, Asahi Glass, oil absorption 205 mL / 100 g) was added to this dispersion, and the mixture was impregnated with sufficient stirring. Next, using a rotary pump, the cyclic silicone was removed by volatilization at 80 ° C. under reduced pressure to obtain an organic-inorganic composite powder. The average particle size of the obtained organic-inorganic composite pigment was 12 μm.
[0027]
Comparative Example 1
2.5 parts by weight of Red No. 202 (Hana Kasei) was added to 97.5 parts by weight of cyclic silicone (SH244, Toray Dow Corning Co., Ltd.) and treated with a sand mill to disperse the fine organic particles. The average particle size of Red No. 202 in the obtained dispersion was 0.8 μm. Next, 10 parts by weight of highly oil-absorbing silica (Sunsphere H122, oil absorption 205 mL / 100 g, average particle size 12 μm, Asahi Glass) was added to this dispersion and impregnated with sufficient stirring. Next, the cyclic silicone was removed by volatilization at 80 ° C. under reduced pressure using a rotary pump to obtain an organic-inorganic composite pigment. The average particle diameter of the obtained organic-inorganic composite pigment was 13 μm.
[0028]
Comparative Example 2
10.3 parts by weight of titanium oxide (CR50, oil absorption 20 mL / 100 g, average particle size 0.8 μm, Ishihara Sangyo) was added to the dispersion obtained in Example 2, and after stirring gently, a rotary pump was used. The cyclic silicone was volatilized and removed at 80 ° C. under reduced pressure to obtain an organic-inorganic composite pigment. The average particle diameter of the obtained organic-inorganic composite pigment was 0.8 μm.
[0029]
Comparative Example 3
To 95 parts by weight of ethanol, 2.5 parts by weight of N-methacryloylethyl N, N-dimethylammonium / α-N-methylcarboxybetaine / butyl methacrylate copolymer (Yukaformer AM-75, Mitsubishi Yuka) was added. It was completely dissolved. To the resulting solution, 2.5 parts by weight of Red No. 202 (Hatsukasei) was added and treated with a sand mill to disperse the fine particle organic colorant. The average particle size of Red No. 201 in the obtained dispersion was 0.9 μm. Next, 10 parts by weight of highly oil-absorbing silica (Sunsphere H122, average particle size 12 μm, Asahi Glass, oil absorption 205 mL / 100 g) was added to this dispersion, and the mixture was impregnated with sufficient stirring. Next, ethanol was volatilized and removed at 80 ° C. under reduced pressure using a rotary pump to obtain an organic-inorganic composite powder. The average particle size of the obtained organic-inorganic composite pigment was 12 μm.
[0030]
Test example 1
The surface of each organic-inorganic composite pigment obtained in each Example and Comparative Example was observed using a scanning electron microscope, and the adhesion state of the organic colorant to the inorganic pigment surface was evaluated according to the following evaluation criteria. The results are shown in Table 1.
(Evaluation criteria)
○: The organic colorant adheres almost uniformly to the surface of the inorganic pigment. Δ: The organic colorant slightly aggregates and adheres to the surface of the inorganic pigment. ×: The organic colorant hardly adheres to the surface of the inorganic pigment.
Test example 2
0.5 g of each organic-inorganic composite pigment obtained in each Example and Comparative Example was placed in 50 mL of water, and stirred vigorously with a stirrer for 3 hours and then dried. Subsequently, the surface was observed using a scanning electron microscope, and the remaining state of the organic pigment on the surface of the inorganic pigment was evaluated according to the following evaluation criteria. The results are shown in Table 1.
(Evaluation criteria)
○: Most of the organic colorant remains on the surface of the inorganic pigment. Δ: A part of the organic colorant remains on the surface of the inorganic pigment. ×: Almost no organic colorant remains on the surface of the inorganic pigment.
Test example 3
1 g of each organic-inorganic composite pigment obtained in each Example and Comparative Example and 5 ml of squalane were mixed using a paint knife, and saturation (C value) was measured with a colorimeter (Σ80, Nippon Denshoku Industries Co., Ltd.). Was measured. As a control, each organic colorant and inorganic pigment used in each example or comparative example were mixed at the same ratio, and the saturation was measured in the same manner as described above, and the saturation was improved according to the following evaluation criteria. The effect was evaluated. The results are shown in Table 1.
(Evaluation criteria)
○: C value increased by 5% or more compared to the control Δ: Difference in C value compared to the control was less than 5% ×: C value decreased by 5% or more compared to the control
Test example 4
0.5 g of each organic-inorganic composite pigment obtained in each Example and Comparative Example was added to 50 ml of a linear paraffin solvent, dispersed for 30 seconds using an ultrasonic disperser, allowed to stand for 5 minutes, and then dispersed. Was visually evaluated according to the following evaluation criteria. The results are shown in Table 1.
(Evaluation criteria)
○: Organic / inorganic composite pigment is almost uniformly dispersed Δ: Organic / inorganic composite pigment is partially dispersed ×: Organic / inorganic composite pigment is almost completely precipitated [0034]
[Table 1]
Figure 0003788680
[0035]
From Table 1, it was confirmed that Examples 1 and 2 were superior to Comparative Examples 1 and 2, and in particular, Example 1 was superior in all items.
[0036]
Formulation Example 1
Eye shadows were prepared with the formulation shown in Table 2. That is, the powder components were mixed with a pulverizer and further mixed with oil until uniform. After passing this through a sieve, it was put into a mold and compressed, and then molded into a solid to form an eye shadow. The obtained eye shadow had high saturation, a clear color tone, and excellent durability.
[0037]
[Table 2]
(Ingredient) (wt%)
Talc 16.7
Mica 10.0
Zinc stearate 7.0
Organic-inorganic composite pigment (Example 1) 18.0
Titanium oxide 3.0
Ultramarine 0.3
Mica titanium 25.0
Liquid paraffin 10.0
Isopropyl myristate 10.0
[0038]
【The invention's effect】
The organic-inorganic composite pigment produced by the method of the present invention is a composite of an organic pigment and an inorganic pigment, and has high saturation, especially when blended in cosmetics, has a clear color tone, and is excellent in durability. It is a thing.

Claims (8)

次の成分(a)〜(c)、
(a)吸油量(JIS K5101測定法による)が50〜300mL/100gの高吸油性無機顔料、
(b)微粒子有機色剤、
(c)環状シリコーンに溶解するオルガノポリシロキサン又はその誘導体、
を含有する有機無機複合顔料。
The following components (a) to (c),
(A) a highly oil-absorbing inorganic pigment having an oil absorption (according to JIS K5101 measurement method) of 50 to 300 mL / 100 g;
(B) a fine particle organic colorant,
(C) an organopolysiloxane or a derivative thereof that dissolves in the cyclic silicone;
An organic-inorganic composite pigment containing
成分(a)が、マイカ、タルク、ベントナイト、ゼオライト、酸化チタン、酸化亜鉛、酸化ジルコニア、チッ化ホウ素、シリカ及びアルミナからなる群より選ばれる1種又は2種以上である請求項1記載の有機無機複合顔料。The organic material according to claim 1, wherein the component (a) is one or more selected from the group consisting of mica, talc, bentonite, zeolite, titanium oxide, zinc oxide, zirconia oxide, boron nitride, silica and alumina. Inorganic composite pigment. 成分(a)の平均粒径が、1.0〜50μmである請求項1又は2記載の有機無機複合顔料。The organic-inorganic composite pigment according to claim 1 or 2, wherein the component (a) has an average particle size of 1.0 to 50 µm. 成分(b)の平均粒径が0.001〜1.0μmである請求項1〜3のいずれか1項記載の有機無機複合顔料。The organic-inorganic composite pigment according to any one of claims 1 to 3, wherein the component (b) has an average particle size of 0.001 to 1.0 µm. 成分(c)が、末端を封鎖されたN−アシルアルキルイミン、ポリアルキレングリコール、ポリアルキレングリコールモノアルキルエーテル、アクリル酸、メタクリル酸、N,N−ジメチルアクリルアミド、ジメチルアミノエチルメタクリレート、四級ジメチルアミノエチルメタクリレート、メタクリルアミド、N−t−ブチルアクリルアミド、マレイン酸、無水マレイン酸、無水マレイン酸の半エステル、クロトン酸、イタコン酸、アクリルアミド、アクリレートアルコール類、ヒドロキシエチルメタクリレート、ジアリルジメチルアンモニウムクロライド、ビニルピロリドン、ビニルエーテル類、ビニルピリジン、ビニルイミダゾール、スチレンスルホネート、アリルアルコール、ビニルアルコール、ビニルカプロラクタム、N−アルキレンカルボベタイン及び糖残基からなる群より選ばれる1種又は2種以上から誘導される官能基を有するオルガノポリシロキサン誘導体である請求項1〜4のいずれか1項記載の有機無機複合顔料。Component (c) is a N-acylalkylimine whose end is blocked, polyalkylene glycol, polyalkylene glycol monoalkyl ether, acrylic acid, methacrylic acid, N, N-dimethylacrylamide, dimethylaminoethyl methacrylate, quaternary dimethylamino Ethyl methacrylate, methacrylamide, Nt-butylacrylamide, maleic acid, maleic anhydride, half-ester of maleic anhydride, crotonic acid, itaconic acid, acrylamide, acrylate alcohols, hydroxyethyl methacrylate, diallyldimethylammonium chloride, vinylpyrrolidone , Vinyl ethers, vinyl pyridine, vinyl imidazole, styrene sulfonate, allyl alcohol, vinyl alcohol, vinyl caprolactam, N-alkyl Emissions carbobetaines and one or organic and inorganic composite pigments according to any one of claims 1 to 4 is an organopolysiloxane derivative having a functional group derived from two or more selected from the group consisting of sugar residues. 平均粒径が1.0〜50μmである請求項1〜5のいずれか1項記載の有機無機複合顔料。The organic-inorganic composite pigment according to any one of claims 1 to 5, having an average particle size of 1.0 to 50 µm. 化粧料に使用するものである請求項1〜6のいずれか1項記載の有機無機複合顔料。The organic-inorganic composite pigment according to any one of claims 1 to 6, which is used for cosmetics. オルガノポリシロキサン又はその誘導体を環状シリコーンに溶解し、得られた溶液に有機顔料を添加して微粒化処理した後、高吸油性無機顔料を主体とする粉体を含浸させ、次いで環状シリコーンを揮発させて除去することを特徴とする請求項1〜7のいずれか1項記載の有機無機複合顔料の製造法。Dissolve organopolysiloxane or its derivative in cyclic silicone, add organic pigment to the resulting solution and atomize it, impregnate with powder mainly composed of highly oil-absorbing inorganic pigment, then volatilize cyclic silicone It removes by making it remove, The manufacturing method of the organic inorganic composite pigment of any one of Claims 1-7 characterized by the above-mentioned.
JP35295797A 1997-12-22 1997-12-22 Organic-inorganic composite pigment and method for producing the same Expired - Fee Related JP3788680B2 (en)

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US7022752B2 (en) 2000-09-01 2006-04-04 Toda Kogyo Corporation Composite particles, process for producing the same, and pigment, paint and resin composition using the same
JP4678099B2 (en) 2001-06-12 2011-04-27 戸田工業株式会社 Organic-inorganic composite pigment, paint using the organic-inorganic composite pigment, and resin composition using the organic-inorganic composite pigment
AU2003266494A1 (en) * 2002-10-02 2004-04-23 L'oreal Composition intended to be applied to the skin and the integuments
FR2868694B1 (en) * 2004-04-08 2008-04-04 Oreal COMPOSITION FOR APPLICATION TO SKIN, LIPS AND / OR PHANES
JP4344989B2 (en) * 2002-11-08 2009-10-14 戸田工業株式会社 COMPOSITE COLORED PARTICLE FOR INKJET INK AND METHOD FOR PRODUCING THE SAME, PRE-DISPERSION FOR INKJET INK, AND INKJET INK
FR2876011B1 (en) 2004-10-05 2006-12-29 Oreal METHOD FOR MAKE-UP A SUPPORT AND KIT FOR IMPLEMENTING SAID METHOD
US9649261B2 (en) 2004-10-05 2017-05-16 L'oreal Method of applying makeup to a surface and a kit for implementing such a method
JP6348690B2 (en) * 2013-06-21 2018-06-27 三菱鉛筆株式会社 Highly functional color material and manufacturing method thereof
JP7220638B2 (en) * 2019-08-19 2023-02-10 富士フイルム株式会社 Emulsion type base makeup cosmetic and method for producing the same
US11325840B1 (en) 2020-11-30 2022-05-10 Sumitomo Osaka Cement Co., Ltd. Zinc oxide powder, dispersion, paint, and cosmetic

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