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    • 1. 发明申请
    • FINE DRY SILICA PARTICLES
    • 精细干燥二氧化硅颗粒
    • US20090253851A1
    • 2009-10-08
    • US12303535
    • 2007-05-22
    • Masakazu OharaYukihiro TakataHiroo AokiMasahide Ueda
    • Masakazu OharaYukihiro TakataHiroo AokiMasahide Ueda
    • C08K3/36B32B5/16C01B33/12
    • C08K3/36C01B33/181G03G9/09725Y10T428/2982
    • Fine dry silica particles are produced by combustion by using a burner of a multiple-pipe structure, feeding a mixed gas of a gas of a siloxane compound without containing halogen in the molecules thereof and an oxygen gas at a ratio of 0.3 to 1.5 into the center pipe of a burner, and feeding a combustible gas into the first annular pipe on the outer side of the center pipe of the burner. The fine dry silica particles has a BET specific surface area of 20 to 55 m2/g, and wherein the water suspension containing the fine silica particles at a concentration of 1.5% by weight has an optical absorbance τ for the light of a wavelength of 700 nm satisfying the following formula (1): τ≦240S−1.4−0.07  (1) wherein S is the BET specific surface area (m2/g) of the fine dry silica particles. The fine dry silica particles do not almost contain coarse particles or aggregated particles, have a sharpe grain size distribution, excellently disperse in the resins, suppress a rise in the viscosity when highly filled, and impart sufficiently large strength to the resin compound.
    • 通过使用多管结构的燃烧器通过燃烧产生细干二氧化硅颗粒,将不含卤素的硅氧烷化合物的气体的混合气体以0.3〜1.5的比例向氧气中进料到 燃烧器的中心管,并且将可燃气体供给到燃烧器的中心管的外侧上的第一环形管中。 细干二氧化硅颗粒的BET比表面积为20〜55m 2 / g,其中含有浓度为1.5重量%的二氧化硅微粒的水悬浮液具有波长为700的光的吸光度τ nm满足下式(1):τS-1.4-0.07(1)其中S是细干二氧化硅颗粒的BET比表面积(m2 / g)。 微细的干燥二氧化硅粒子几乎不含有粗粒子或凝集粒子,具有尖锐的粒度分布,在树脂中分散良好,抑制高填充时的粘度上升,赋予树脂化合物足够大的强度。
    • 2. 发明授权
    • Fine dry silica particles
    • 细干二氧化硅颗粒
    • US07803341B2
    • 2010-09-28
    • US12303535
    • 2007-05-22
    • Masakazu OharaYukihiro TakataHiroo AokiMasahide Ueda
    • Masakazu OharaYukihiro TakataHiroo AokiMasahide Ueda
    • C01B33/12
    • C08K3/36C01B33/181G03G9/09725Y10T428/2982
    • Fine dry silica particles are produced by combustion by using a burner of a multiple-pipe structure, feeding a mixed gas of a gas of a siloxane compound without containing halogen in the molecules thereof and an oxygen gas at a ratio of 0.3 to 1.5 into the center pipe of a burner, and feeding a combustible gas into the first annular pipe on the outer side of the center pipe of the burner. The fine dry silica particles has a BET specific surface area of 20 to 55 m2/g, and wherein the water suspension containing the fine silica particles at a concentration of 1.5% by weight has an optical absorbance τ for the light of a wavelength of 700 nm satisfying the following formula (1): τ≦240S−1.4−0.07  (1) wherein S is the BET specific surface area (m2/g) of the fine dry silica particles. The fine dry silica particles do not almost contain coarse particles or aggregated particles, have a sharpe grain size distribution, excellently disperse in the resins, suppress a rise in the viscosity when highly filled, and impart sufficiently large strength to the resin compound.
    • 通过使用多管结构的燃烧器通过燃烧产生细干二氧化硅颗粒,将不含卤素的硅氧烷化合物的气体的混合气体以0.3〜1.5的比例向氧气中进料到 燃烧器的中心管,并且将可燃气体供给到燃烧器的中心管的外侧上的第一环形管中。 细干二氧化硅颗粒的BET比表面积为20〜55m 2 / g,其中含有浓度为1.5重量%的二氧化硅微粒的水悬浮液对波长为700的光具有光吸收率τ nm满足下式(1):τ≦̸ 240S-1.4-0.07(1)其中S是细干二氧化硅颗粒的BET比表面积(m2 / g)。 微细的干燥二氧化硅粒子几乎不含有粗粒子或凝集粒子,具有尖锐的粒度分布,在树脂中分散良好,抑制高填充时的粘度上升,赋予树脂化合物足够大的强度。
    • 3. 发明授权
    • Fine silica particles having specific fractal structure parameter
    • 具有特定分形结构参数的二氧化硅微粒
    • US07452599B2
    • 2008-11-18
    • US10540886
    • 2003-12-25
    • Masakazu OharaMinoru KimuraHiroo Aoki
    • Masakazu OharaMinoru KimuraHiroo Aoki
    • B32B5/16
    • B82Y30/00C01B33/183C01P2004/54C01P2004/62C01P2004/64C01P2006/12C01P2006/80C09C1/30G03G9/09716G03G9/09725Y10T428/259Y10T428/2991
    • This invention provides flame-generated fine silica particles having an average particle size of 0.05 to 1 μm, wherein a fractal structure parameter α1 at length scales ranging from 50 nm to 150 nm and a fractal structure parameter α2 at length scales ranging from 150 nm to 353 nm satisfy the following formulas (1) and (2): −0.0068S+2.548≦α1≦−0.0068S+3.748  (1) −0.0011S+1.158≦α2≦−0.0011S+2.058  (2) wherein S is a BET specific surface area (m2/g) of the fine silica particles, in the measurement of small-angle X-ray scattering. When used as a filler for a semiconductor-encapsulation resin or when used as a filler for a polishing agent or for a coating layer for ink jet papers, the fine silica particles are available at high content without substantial enhancement of the viscosity. Besides, when used as a filler for the resin, the fine silica particles improve the strength of the molding compound. Furthermore, when used as a toner additive for electrophotography, the fine silica particles improve the free-flow property of the toner without removal from the toner surfaces.
    • 本发明提供火焰生成的平均粒度为0.05-1μm的细二氧化硅颗粒,其中长度在50nm至150nm范围内的分形结构参数α1 N 1和分形结构参数α 在150nm〜353nm范围内的长度刻度的2 满足下列式(1)和(2):<?in-line-formula description =“In-line formula”end =“lead” ?> - 0.0068S + 2.548 <=α1 <= - 0.0068S + 3.748(1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> - 0.0011S + 1.158 <= alpha <2> <= - 0.0011S + 2.058(2)<? in-line-formula description =“In-line Formulas”end =“tail”?>其中S是二氧化硅微粒的BET比表面积(m 2 SUP / g / g),在测量中 的小角度X射线散射。 当用作半导体封装树脂的填料或用作抛光剂的填料或用于喷墨纸的涂层时,二氧化硅微粒可以高含量获得,而不会显着提高粘度。 此外,当用作树脂的填料时,二氧化硅微粒提高了模塑料的强度。 此外,当用作电子照相的调色剂添加剂时,二氧化硅微粒改善调色剂的自由流动性而不从调色剂表面上除去。
    • 4. 发明申请
    • Slica fine particles
    • 切片细粒
    • US20060150527A1
    • 2006-07-13
    • US10540886
    • 2003-12-25
    • Masakazu OharaMinoru KimuraHiroo Aoki
    • Masakazu OharaMinoru KimuraHiroo Aoki
    • C09K3/14
    • B82Y30/00C01B33/183C01P2004/54C01P2004/62C01P2004/64C01P2006/12C01P2006/80C09C1/30G03G9/09716G03G9/09725Y10T428/259Y10T428/2991
    • This invention provides flame-generated fine silica particles having an average particle size of 0.05 to 1 μm, wherein a fractal structure parameter α1 at length scales ranging from 50 nm to 150 nm and a fractal structure parameter α2 at length scales ranging from 150 nm to 353 nm satisfy the following formulas (1) and (2): −0.0068S+2.548≦α1≦−0.0068S+3.748  (1) −0.0011S+1.158≦α2≦−0.0011S+2.058  (2) wherein S is a BET specific surface area (m2/g) of the fine silica particles, in the measurement of small-angle X-ray scattering. When used as a filler for a semiconductor-encapsulation resin or when used as a filler for a polishing agent or for a coating layer for ink jet papers, the fine silica particles are available at high content without substantial enhancement of the viscosity. Besides, when used as a filler for the resin, the fine silica particles improve the strength of the molding compound. Furthermore, when used as a toner additive for electrophotography, the fine silica particles improve the free-flow property of the toner without removal from the toner surfaces.
    • 本发明提供火焰生成的平均粒度为0.05-1μm的细二氧化硅颗粒,其中长度在50nm至150nm范围内的分形结构参数α1 N 1和分形结构参数α 在150nm〜353nm范围内的长度刻度的2 满足下列式(1)和(2):<?in-line-formula description =“In-line formula”end =“lead” ?> - 0.0068S + 2.548 <=α1 <= - 0.0068S + 3.748(1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> - 0.0011S + 1.158 <= alpha <2> <= - 0.0011S + 2.058(2)<? in-line-formula description =“In-line Formulas”end =“tail”?>其中S是二氧化硅微粒的BET比表面积(m 2 SUP / g / g),在测量中 的小角度X射线散射。 当用作半导体封装树脂的填料或用作抛光剂的填料或用于喷墨纸的涂层时,二氧化硅微粒可以高含量获得,而不会显着提高粘度。 此外,当用作树脂的填料时,二氧化硅微粒提高了模塑料的强度。 此外,当用作电子照相的调色剂添加剂时,二氧化硅微粒改善调色剂的自由流动性而不从调色剂表面上除去。