JP6883666B2 - 複合白色顔料 - Google Patents
複合白色顔料 Download PDFInfo
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- JP6883666B2 JP6883666B2 JP2019549011A JP2019549011A JP6883666B2 JP 6883666 B2 JP6883666 B2 JP 6883666B2 JP 2019549011 A JP2019549011 A JP 2019549011A JP 2019549011 A JP2019549011 A JP 2019549011A JP 6883666 B2 JP6883666 B2 JP 6883666B2
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- white pigment
- white
- thickness
- refractive
- substrate
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
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- C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
- C09C2200/308—Total thickness of the pigment particle
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- C09C2220/00—Methods of preparing the interference pigments
- C09C2220/10—Wet methods, e.g. co-precipitation
- C09C2220/106—Wet methods, e.g. co-precipitation comprising only a drying or calcination step of the finally coated pigment
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Description
以下では、本発明の好ましい実施例を介して本発明の構成及び作用をさらに詳説する。ただし、これは、本発明の好ましい例示として提示されたものであり、どのような意味でも、これによって本発明が制限されると解釈されてはならない。
比較例1
厚みが350nm〜700nmである合成雲母フレーク100gを2L脱ミネラル水に投入した後、撹拌してスラリーを形成した。次に、スラリーを75℃まで加熱した後、HCl溶液を添加してスラリーのpHを1.7に調整した。
厚みが350nm〜700nmである合成雲母フレーク100gを2L脱ミネラル水に投入した後、撹拌してスラリーを形成した。次に、スラリーを75℃まで加熱した後、HCl溶液を添加して、スラリーのpHを1.7に調整した。
(1)製造例2−1
厚みが200nm〜250nmである板状アルミナフレーク100gを2L脱ミネラル水に投入した後、撹拌してスラリーを形成した。次に、スラリーを75℃まで加熱した後、HCl溶液を添加して、スラリーのpHを1.7に調整した。
厚みが300nm〜350nmである板状アルミナフレーク100gを2L脱ミネラル水に投入した後、撹拌してスラリーを形成した。次に、スラリーを75℃まで加熱した後、HCl溶液を添加して、スラリーのpHを1.7に調整した。
製造例2−1及び製造例2−2による方法で得た白色粉末を重量比1:1で混合して、白色顔料粉末を得た。これを実施例2と言う。
(1)製造例3−1
厚み350〜700nmである合成雲母フレーク100gを2L脱ミネラル水に投入した後、撹拌してスラリーを形成した。次に、スラリーを75℃まで加熱した後、HCl溶液を添加して、スラリーのpHを1.7に調整した。
厚み350〜700nmである合成雲母フレーク100gを2L脱ミネラル水に投入した後、撹拌してスラリーを形成した。次に、スラリーを75℃まで加熱した後、HCl溶液を添加して、スラリーのpHを1.7に調整した。
製造例3−1及び製造例3−2による方法で得た白色粉末を重量比1:1で混合して、白色顔料粉末を得た。これを実施例3と言う。
合成雲母フレークに代えて厚みが200nm〜250nmである板状アルミナフレークを用いたことを除いては、製造例3−1及び製造例3−2と同様な方法で白色粉末を得て(製造例4−1、製造例4−2)、重量比1:1で混合して白色顔料粉末を得た。
比較例1、実施例1〜4による物性を次のように評価した。
表1は、製造例3−1、3−2及び3−3、製造例4−1、4−2及び4−3による白色顔料の色差計値(a*、b*)を示したものである。
下記は、前記実施例3で得られた白色顔料が塗料、プラスチック、インキ及び化粧品に使用される適用例に関する説明である。
これは、自動車の表面のコーティング塗料に用いる例である。
[ポリエステル樹脂]
ハイキュベース調色用透明(BC−1000)(株)ノルペイント
ハイキュLVシンナー(DR−950WS)(株)ノルペイント
ハイキュウルトラクリア(株)ノルペイント
ハイキュウルトラクリア硬化剤(CCH−100)(株)ノルペイント
下記は、プラスチックを着色するために用いられる顔料組成物の例である。
実施例3で得られた白色顔料:1重量部
亜鉛ステアレート:0.2重量部
液体パラフィン:0.1重量部
下記は、唇−色合い化粧品用組成物である。
Octyldodecanol−10重量部
Diisostearyl Malate−20重量部
Ceresi n−5重量部
Euphorbia Cerifera (Candelilla) Wax−5重量部
Dipentaerythrityl Hexahydroxyste arate/Hexastearate/Hexarosinate −18.5重量部
Copernicia Cerifera (Carnauba) Wax−3重量部
Isopropyl Lanolate−1重量部
VP/Hexadecene Copolymer−1重量部
実施例3で得られた白色顔料:好適量
酸化防止剤、保存剤及び芳香剤:少量
Claims (9)
- 基質と、前記基質上に形成される白色金属酸化物層を含む第1の白色顔料;及び、
基質と、前記基質上に形成される白色金属酸化物層を含み、前記第1の白色顔料とは異なる色差計値を有する第2の白色顔料を含む複合白色顔料であって、
前記白色金属酸化物層は、
前記基材の表面に形成され、TiO 2 を含む第1の高屈折層;
前記第1の高屈折層上に形成され、TiO 2 より屈折率が低い物質を含む低屈折層;及び、
前記低屈折層上に形成され、TiO 2 を含む第2の高屈折層;
を含み、
前記第1の高屈折層の厚みをT1とし、前記第2の高屈折層の厚みをT2とするとき、
第1の白色顔料において2T1>T2≧T1であり、第2の白色顔料において3T1≧T2≧2T1であることを特徴とする、複合白色顔料。 - 前記第2の白色顔料の基質の最小厚みが、前記第1の白色顔料の基質の最大厚みより50nm以上大きいことを特徴とする、請求項1に記載の複合白色顔料。
- 前記第1の白色顔料は、厚みが200〜250nmである基質を含み、前記第2の白色顔料は、厚みが300〜350nmである基質を含むことを特徴とする、請求項2に記載の複合白色顔料。
- 前記第2の白色顔料の白色金属酸化物層の最小厚みが、前記第1の白色顔料の白色金属酸化物層の最大厚みより60nm以上大きいことを特徴とする、請求項1に記載の複合白色顔料。
- 前記第1の白色顔料は、厚みが30〜80nmである白色金属酸化物層を含み、前記第2の白色顔料は、厚みが100〜160nmである白色金属酸化物層を含むことを特徴とする、請求項4に記載の複合白色顔料。
- 前記第1の高屈折層及び前記第2の高屈折層は、TiO2を含むことを特徴とする、請求項1に記載の複合白色顔料。
- 前記低屈折層は、SiO2及びMgO・SiO2のうち1種以上を含むことを特徴とする、請求項1に記載の複合白色顔料。
- 前記基質は、天然雲母、合成雲母、ガラスフレーク及びアルミナフレークの中で選択されることを特徴とする、請求項1〜請求項5のうちいずれか一項に記載の複合白色顔料。
- 請求項1〜請求項5のうちいずれか一項による複合白色顔料を含み、前記複合白色顔料が塗料、印刷用インキ、オンドルの床マット、壁紙、特殊紙、プラスチック、皮革剤、アクセサリー、化粧品、セラミック、及び人造大理石のうち少なくともいずれかに使用されることを特徴とする、干渉顔料。
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