JP6184099B2 - 自己分散性金属酸化物コーティング粉末、その製造方法及び使用 - Google Patents
自己分散性金属酸化物コーティング粉末、その製造方法及び使用 Download PDFInfo
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- JP6184099B2 JP6184099B2 JP2012502165A JP2012502165A JP6184099B2 JP 6184099 B2 JP6184099 B2 JP 6184099B2 JP 2012502165 A JP2012502165 A JP 2012502165A JP 2012502165 A JP2012502165 A JP 2012502165A JP 6184099 B2 JP6184099 B2 JP 6184099B2
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- Prior art keywords
- metal oxide
- coating
- oxide particles
- particles
- hydrophobic coating
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- 229910044991 metal oxide Inorganic materials 0.000 title claims description 89
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- 239000000843 powder Substances 0.000 title description 61
- 238000004519 manufacturing process Methods 0.000 title description 4
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- 238000000034 method Methods 0.000 claims description 28
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- 239000000463 material Substances 0.000 claims description 26
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- 239000002253 acid Substances 0.000 claims description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 13
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
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- 239000002244 precipitate Substances 0.000 description 1
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- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
- 229960003656 ricinoleic acid Drugs 0.000 description 1
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
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- TUNFSRHWOTWDNC-UHFFFAOYSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
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- Wood Science & Technology (AREA)
- Cosmetics (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
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Description
粒子状金属酸化物は、実質的に金属酸化物のみからであってよいが、ひとつの実施態様では、金属酸化物粒子は前記有機分散剤を含むコーティング剤に加えて無機コーティングを含むことができる。例えば、金属酸化物粒子は、アルミニウム、ジルコニウム又は珪素又はそれらの混合物などの他の元素の酸化物でコーティングされてもよい(例えば GB−2205088−Aで開示されるアルミナ又はシリカであり、ここで開示される内容は参照されて本明細書の一部となる)。無機コーティングの好ましい量は、粒子状金属酸化物の重量に対する重量%で、2%から25%、より好ましくは4%から20%、特に好ましくは6%から15%、特に8%から12%である。無機コーティングは当該技術分野で知られる方法で適用され得る。典型的プロセスには、前記無機コーティングを形成する酸化物の無機金属元素の可溶性塩の存在下で金属酸化物粒子の水溶性分散物を形成することを含む。この分散物は通常酸性又は塩基性であり、選択された塩の性質に依存する。さらに該無機酸化物の沈殿を、該水溶液中に酸又はアルカリを適宜添加してpHを調節することで達成できる。
有機分散剤コーティング剤は金属酸化物粒子又は粉末に、当業者に知られた種々の技術を用いて適用することができる。金属酸化物は適切なコーティング剤を液体媒体中で処理することができ、例えば、コーティング剤を粉末と混合する又はコーティング剤を粉末上にスプレーすることにより処理することができる。他の方法には、金属酸化物及び有機分剤のスラリを調製することが挙げられる。
処理された粉末はその後溶媒を除去するためにさらに約1から10時間、約30℃から約150℃で加熱され乾燥され得る。ここで開示された全ての実施態様について、本プロセスはまた、全ての凝集体又は過大サイズのコーティング粉末を処理ためにミリングすることを含む。
他の側面において、有機分散剤を持つ自己分散性金属酸化物粉末は、分散媒体に添加されて金属酸化物のスラリ又は好ましくは液体分散物を形成することができる。該分散媒体は上で説明された全ての適切な水性又は有機液体媒体であり得る。液体分散物とは真性の分散物を意味し、固体粒子が凝集に対し安定であることを意味する。該分散物中の粒子は比較的に均一に分散され、静置状態での沈殿生成に抵抗性がある。しかしいくらかの沈殿が生成したとしても、かき混ぜるだけで粒子が容易に再分散される。
C12〜C15アルコールベンゾエート中のTiO2分散物が得られる。ひとつの実施態様において、0.5kgの処理されたTiO2(一次粒子が約15x80nm)を1kgのフィンゾルブ(Finsolv)TN(C12〜C15アルコールベンゾエートであり、Finetex、Incから入手可能)中で該実験用ミキサを用いて分散させた(ミクロTiO2の40%分散物が得られることに対応する)。この方法は金属酸化物の分散物を得るための適切な方法の例であり、本発明がこれに限定されるものではない。
他の側面において、ここで説明されたコーティング粉末及び/又は分散物の全ては、化粧品組成物に含まれ得る。化粧品組成物は無水であってもエマルジョンであってもよい。本粉末が適用され得る化粧品組成物の例としては、ファンデーション又はプレスドパウダ、リップスティック、ブラッシュ、アイシャドウ及びマスカラなどの液体又はドライメイクアップが挙げられる。コーティング金属酸化物は、化粧品組成物において次の利点を持つ。即ち該粉末は有機液体媒体(例えば、エステル、オイル及び炭化水素など)及び変性シリコーン液体中で自己分散性であり、強化された分散性を有する点である。さらに該金属酸化物を、UV減衰剤などの組成物中で用いる場合において、可視光に対して透明であり皮膚の白化を抑制する、という点で利点を持つ。
自己分散性粒子性金属酸化物を、表1に列記した順でコーティングを調製した。
1gのポリヒドロキシステアリン及び2gのトリエトキシシランをイソプロピルアルコールに溶解した。得られた溶液を100gの二酸化チタン(TipaquePF−671、Kobo Productsから入手可能)と混合した。混合物を加熱して溶媒を除き、さらに100℃で3時間加熱して粉末を乾燥させた。乾燥粉末はその後ミリングして大きな固まりを除いた。
二工程方法:
2gのトリエトキシシランをイソプロピルアルコールに溶解した。得られた溶液に100gの二酸化チタン(TipaquePF−671、Kobo Productsから入手可能)を混合した。混合物を加熱して溶媒を除去し、さらに100℃で3時間加熱して粉末を乾燥した。乾燥粉末をミリングして大きな固まりを除去した。3gのイソプロピルアルコール中の1gのポリヒドロキシステアリン酸溶液を前記乾燥粉末にスプレーした。粉末を100℃で加熱した。乾燥粉末をその後粉砕処理して大きな固まりを除去した。
実施例1のコーティング金属酸化物を用いて分散物を調製した。
実施例3
本発明によれば、本発明によるコーティング金属酸化物はコンパクトパウダの製造有用であることが見いだされた。特に、コンパクトパウダは表2の成分である処方Aを用いて調製した。
実施例4
処方B成分を用いて第二のコンパクトパウダを表3に示される処方により調製した。
他のコンパクト又はプレスドパウダ処方物が表5に示される。
パート1の成分を色が十分広がるまで粉末化措置でブレンドした。パート2のジメチコンをその後添加し、混合物が十分混合されるまでブレンドした。混合物を従来のコンパクトパウダ製造装置を用いて250psiで圧縮した。
処理A:イソプロピルチタニウムトリイソステアレート処理、
処理B:トリエトキシカプリルイルシラン処理、
又は処理C:ポリヒドロキシステアリン酸及びトリエトキシカプリルイルシラン処理。
Claims (6)
- 金属酸化物粒子を含む材料と、
疎水性コーティング剤を含む疎水性コーティングと、
前記金属酸化物粒子を含む材料にコーティングする材料であって、有機分散剤を含む材料とを含み、
前記疎水性コーティングが、前記金属酸化物粒子を含む材料と前記有機分散剤を含む材料との間に設けられており、
前記有機分散剤は、前記コーティングされた金属酸化物粒子を含む材料が自己分散性となる量で存在し、
前記有機分散剤は、ポリヒドロキシステアリン酸(ただし、ジヒドロキシステアリン酸を除く。)であり、
前記疎水性コーティング剤は、トリエトキシカプリルイルシランであり、
非水系である、化粧品組成物。 - 前記金属酸化物粒子が、二酸化チタン、酸化亜鉛、酸化アルミニウム、酸化鉄、酸化ジルコニウム、酸化クロム、酸化セリウム、金属酸化物複合体及び金属酸化物及び無機塩との複合体からなる群から選択されるミクロ化粒子又は色素グレード粒子である、請求項1に記載の化粧品組成物。
- アルミニウム、ジルコニウム、シリコンの酸化物及びこれらの混合物からなる群から選択される無機コーティングをさらに含み、
前記無機コーティングが、前記金属酸化物粒子を含む材料及び前記疎水性コーティングの間に設けられている、請求項1に記載の化粧品組成物。 - 金属酸化物粒子を含む材料と、疎水性コーティング剤を含む疎水性コーティングと、有機分散剤を含む材料を含む化粧品組成物を調製する方法であって、
前記金属酸化物粒子を含む材料を準備することと、
前記金属酸化物粒子を含む材料を、前記疎水性コーティングでコーティングすることと、
前記疎水性コーティングがコーティングされた金属酸化物粒子を含む材料を、前記有機分散剤を含む材料でコーティングすることとを含み、
前記有機分散剤を含む材料でコーティングされた金属酸化物粒子を含む材料を自己分散性とし、
前記有機分散剤は、ポリヒドロキシステアリン酸(ただし、ジヒドロキシステアリン酸を除く。)であり、
前記疎水性コーティング剤は、トリエトキシカプリルイルシランであり、
前記化粧品組成物は、非水系である、化粧品組成物の調製方法。 - 前記金属酸化物粒子を含む材料を、アルミニウム、ジルコニウム、シリコンの酸化物及びこれらの混合物からなる群から選択される酸化物を含む無機コーティングでコーティングすることをさらに含み、
前記無機コーティングが、前記金属酸化物粒子を含む材料及び前記疎水性コーティングの間に設けられている、請求項4に記載の化粧品組成物の調製方法。 - 請求項4に記載の化粧品組成物の調製方法により調製されている、化粧品組成物。
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