JP2007100082A - 有色微小複合粒子粉末及び該有色微小複合粒子粉末を含有する分散体、並びに有色微小複合粒子粉末の製造法 - Google Patents
有色微小複合粒子粉末及び該有色微小複合粒子粉末を含有する分散体、並びに有色微小複合粒子粉末の製造法 Download PDFInfo
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- JP2007100082A JP2007100082A JP2006243359A JP2006243359A JP2007100082A JP 2007100082 A JP2007100082 A JP 2007100082A JP 2006243359 A JP2006243359 A JP 2006243359A JP 2006243359 A JP2006243359 A JP 2006243359A JP 2007100082 A JP2007100082 A JP 2007100082A
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Landscapes
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
【解決手段】 有機顔料にシリカが内包されている微小複合粒子からなる有色微小複合粒子粉末は、シリカ粒子と表面改質剤とを混合攪拌してシリカ粒子の粒子表面に表面改質剤を被覆後、有機顔料を添加し、混合攪拌して、前記表面改質剤が被覆されたシリカ粒子の粒子表面に有機顔料が付着している複合粒子を得た後に、アルカリ溶液を用いて該複合粒子中のシリカ粒子及び表面改質剤の一部を溶解させて得ることができる。
【選択図】 なし
Description
本発明において、最も重要な点は、本発明に係る有色微小複合粒子粉末は、一次粒子が微小であるとともに、高い着色力と優れた分散性を有し、且つ、耐光性にも優れているという事実である。
C*値=((a*値)2+(b*値)2)1/2
着色力(%)=100+{(ΔLs*値−ΔL*値)×10}
上記試料粉体10gとアミノアルキッド樹脂16g及びシンナー6gとを配合して、3mmφガラスビーズ90gと共に140mlのガラスビンに添加し、次いで、ペイントシェーカーで45分間混合分散した後、アミノアルキッド樹脂50gを追加し、更に5分間ペイントシェーカーで分散させて、原色エナメルを作製した。
上記原色エナメル12gとアミラックホワイト(二酸化チタン分散アミノアルキッド樹脂)80gとを配合し、ペイントシェーカーで15分間混合分散して、展色エナメルを作製した。
ΔE*値=((ΔL*値)2+(Δa*値)2+(Δb*値)2)1/2
ΔL*値: 比較する試料の紫外線照射有無のL*値の差
Δa*値: 比較する試料の紫外線照射有無のa*値の差
Δb*値: 比較する試料の紫外線照射有無のb*値の差
2:複合粒子100個当たりに10個以上30個未満。
3:複合粒子100個当たりに5個以上10個未満。
4:複合粒子100個当たりに5個未満。
2:非着色部分が5cm以上、10cm未満。
3:非着色部分が1cm以上、5cm未満。
4:非着色部分が1cm未満。
5:非着色部分が認められず。
εw=εh/ε0
εw:比吸光係数
εh:各有色微小複合粒子粉末の単位重量当たりの吸光係数
ε0:各有色微小複合粒子粉末の原料として用いている有機顔料の単位重量当たりの吸光係数
シリカ1(平均一次粒子径:16nm、BET比表面積値:204.3m2/g、耐光性ΔE*:5.36)7.0kgに、メチルハイドロジェンポリシロキサン(商品名:TSF484:GE東芝シリコーン株式会社製)140gを、エッジランナーを稼動させながら添加し、588N/cm(60Kg/cm)の線荷重で30分間混合攪拌を行った。なお、このときの攪拌速度は22rpmで行った。
3lのビーカーに、上記で得られた複合粒子粉末200gと0.65mol/lの水酸化ナトリウム水溶液2l(芯粒子であるシリカ粒子及び表面改質剤を溶解できる理論量の0.2倍)を入れ、pHを13.1とし、60℃で30分間攪拌した。これを濾過、水洗後、乾燥させて有色微小複合粒子粉末を得た。
140mlガラス瓶に、前記有色微小複合粒子粉末15重量部、水100重量部を0.35mmφガラスビーズ100gとともに添加し、ペイントシェーカーで2時間分散させて、水系分散体を得た。
140mlガラス瓶に、前記有色微小複合粒子粉末15重量部、PGMEA100重量部を0.35mmφガラスビーズ100gとともに添加し、ペイントシェーカーで2時間混合分散させて溶剤系分散体を得た。
芯粒子として、表1に示す特性を有するシリカ粒子粉末1〜4を用意した。
複合粒子2〜5:
芯粒子の種類、表面改質剤の種類及び添加量、表面改質剤の被覆工程におけるエッジランナー処理の線荷重及び時間、有機顔料の付着工程における有機顔料の種類、添加量、エッジランナー処理の線荷重及び時間を種々変化させた以外は、前記複合粒子1と同様にして複合粒子粉末を得た。
実施例1−2〜1−8、比較例1−1〜1−3:
複合粒子の種類、アルカリ溶解時における溶解液のpH及び添加するアルカリの理論量対比量、処理温度及び処理時間を種々変化させた以外は前記実施例1−1と同様にして有色微小複合粒子粉末を得た。なお、複合粒子粉末の濃度(g/100ml)は、溶解液100mlに対する複合粒子粉末の重量(g)である。なお、実施例1−2は、乾燥工程として、凍結乾燥を行ったものである。
有機顔料Y(種類:キノフタロン系顔料、平均一次粒子径:252nm、BET比表面積値:27.9m2/g、L*値:84.21、a*値:3.00、b*値:91.31、C*値:91.36、耐光性ΔE*:7.22、水系のζ電位:−3.1mV、溶剤系のζ電位:−1.4mV)80g、キシレン6g、径8mmのスチールビーズ2kgを乾式アトライター中に仕込み、回転数300rpmで80℃、2時間運転して、キノフタロン顔料を得た。
実施例2−2〜2−8、比較例2−1〜2−10:
有色微小複合粒子粉末の種類及び配合量を種々変化させた以外は、前記実施例2−1と同様にして水系分散体を得た。
有色微小複合粒子粉末100重量部と水100重量部を混合し、50℃の加熱条件下で3本ロールミルを用いて混練分散させることにより、水系分散体を得た。
実施例3−2〜3−8、比較例3−1〜3−10:
有色微小複合粒子粉末の種類及び配合量を種々変化させた以外は、前記実施例3−1と同様にして溶剤系分散体を得た。
有色微小複合粒子粉末100重量部とPGMEA100重量部を混合し、50℃の加熱条件下で3本ロールミルを用いて混練分散させることにより、溶剤系分散体を得た。
Claims (6)
- 有機顔料にシリカが内包されている微小複合粒子からなることを特徴とする有色微小複合粒子粉末。
- 微小複合粒子に含まれるシリカが、有色微小複合粒子粉末に対して、Si換算で0.001〜9重量%であることを特徴とする請求項1記載の有色微小複合粒子粉末。
- 請求項1又は請求項2に記載の有色微小複合粒子粉末を溶媒中に分散させてなることを特徴とする分散体。
- 溶媒が水及び/又は水溶性有機溶剤であることを特徴とする請求項3記載の水系分散体。
- 溶媒が有機溶剤であることを特徴とする請求項3記載の溶剤系分散体。
- シリカ粒子と表面改質剤とを混合攪拌してシリカ粒子の粒子表面に表面改質剤を被覆後、有機顔料を添加し、混合攪拌して、前記表面改質剤が被覆されたシリカ粒子の粒子表面に有機顔料が付着している複合粒子を得た後に、アルカリ溶液を用いて該複合粒子中のシリカ粒子及び表面改質剤の一部を溶解させることを特徴とする請求項1又は請求項2記載の有色微小複合粒子粉末の製造法。
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DE102008017042A1 (de) | 2007-04-06 | 2008-10-09 | Denso Corp., Kariya-shi | Fahrzeugsystem zum geeigneten Steuern der Motorgeschwindigkeit und der Getriebeübersetzung gemäß dem Batterieladezustand |
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DE102008017042A1 (de) | 2007-04-06 | 2008-10-09 | Denso Corp., Kariya-shi | Fahrzeugsystem zum geeigneten Steuern der Motorgeschwindigkeit und der Getriebeübersetzung gemäß dem Batterieladezustand |
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