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    Dispersion of silica particle agglomerates and process for producing the same
    3.
    发明授权
    Dispersion of silica particle agglomerates and process for producing the same 失效
    二氧化硅颗粒附聚物的分散体及其制造方法

    公开(公告)号：US06569908B2

    公开(公告)日：2003-05-27

    申请号：US09764910

    申请日：2001-01-16

    申请人： Tetsuro Noguchi ,  Kozo Tajiri

    发明人： Tetsuro Noguchi ,  Kozo Tajiri

    IPC分类号： B01F312

    CPC分类号： C01B33/1465

    摘要： The present invention also provides a process for producing a colloidal dispersion of silica particle agglomerates having a specific surface area, as determined by nitrogen adsorption method, of 100 m2/g to 400 m2/g, an average secondary particle diameter of 20 nm to 300 nm and a pore volume of 0.5 ml/g to 2.0 ml/g, which comprises using a colloidal dispersion of silica particle agglomerates having a specific surface area, as determined by nitrogen adsorption method, of 300 m2/g to 1,000 m2/g and a pore volume of 0.4 ml/g to 2.0 ml/g as a seed dispersion, adding a feed solution comprising at least one of an aqueous active silicic acid solution and alkoxysilanes to the seed dispersion in small portions in the presence of an alkali to grow silica particle agglomerates.

    摘要翻译： 本发明还提供了通过氮吸附法测定的比表面积为100m 2 / g〜400m 2 / g，平均二次粒径为20nm〜300μm的二氧化硅粒子聚集体的胶体分散体的制造方法 nm，孔体积为0.5ml / g至2.0ml / g，其包括使用通过氮吸附法测定的具有比表面积的二氧化硅颗粒附聚物的胶态分散体为300m 2 / g至1,000m 2 / g，以及 将孔体积为0.4ml / g至2.0ml / g作为种子分散体，在碱存在下，将少量含有活性硅酸水溶液和烷氧基硅烷中的至少一种的进料溶液加入到种子分散体中以生长 二氧化硅颗粒附聚物。

    Preparation of silica sol
    4.
    发明授权
    Preparation of silica sol 失效
    二氧化硅溶胶的制备

    公开(公告)号：US4806665A

    公开(公告)日：1989-02-21

    申请号：US118371

    申请日：1987-11-05

    申请人： Robert D. Jones ,  Curran M. Simpson

    发明人： Robert D. Jones ,  Curran M. Simpson

    IPC分类号： C01B33/145 ,  C01B33/146 ,  C01B33/148 ,  C07F7/08 ,  C07F7/10

    CPC分类号： C01B33/148 ,  C01B33/145 ,  C01B33/1465

    摘要： A method for producing a silica sol containing less than 200 ppm sodium having an average particle size of 2-110 nm, and a particle size distribution with a coefficient dispersion of 0.16-0.4. The silica sols are produced using a lower alkanolamine containing heal to which aliquots of silicic acid are added. The aliquots are added to maintain a substantially constant concentration of colloidal silica in the product. Subsequent to production, the sol may be concentrated by ultrafiltration.Preparation of low sodium silica sol utilizing a constant silica technique by heating the initial heel to 94.degree..+-.4.degree. C. and adding additional silica maintaining constant total silica. The stabilization is effected with an alkanolamine.

    摘要翻译： 一种含有平均粒径为2-110nm的少于200ppm的钠的二氧化硅溶胶的制造方法以及系数分散度为0.16〜0.4的粒度分布。 二氧化硅溶胶是使用含有添加了等份的硅酸的低温链烷醇胺来制备的。 加入等分试样以保持产物中基本上恒定的胶体二氧化硅浓度。 生产后，可以通过超滤浓缩溶胶。 使用恒定二氧化硅技术制备低钠硅溶胶，通过将初始后跟加热至94℃+/- 4℃，并加入额外的二氧化硅保持恒定的总二氧化硅。 用烷醇胺进行稳定化。

    Process for Producing Elongated-Shaped Silica Sol
    5.
    发明申请
    Process for Producing Elongated-Shaped Silica Sol 审中-公开
    生产细长二氧化硅溶胶的方法

    公开(公告)号：US20100037801A1

    公开(公告)日：2010-02-18

    申请号：US12449214

    申请日：2007-02-01

    申请人： Yutaka Ohmori ,  Hirotomo Itou ,  Kenji Yamaguchi

    发明人： Yutaka Ohmori ,  Hirotomo Itou ,  Kenji Yamaguchi

    IPC分类号： C04B14/04

    CPC分类号： C01B33/1465 ,  B82Y30/00 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/22 ,  C01P2006/40 ,  C09C1/3045

    摘要： There is provided a method for producing an elongated-shaped silica sol comprising the following steps: (a) adding an aqueous solution containing a water soluble Ca salt and/or Mg salt to an aqueous colloidal solution of active silicic acid with an SiO2 concentration of 1 to 6% by mass and a pH of 2 to 5 in a mass ratio of CaO and/or MgO to SiO2 in the active silicic acid of 1500 to 15,000 ppm, and mixing; (b) adding alkali metal hydroxide, a water soluble organic base, or water soluble silicate thereof to an aqueous solution obtained through (a) in a determined molar ratio to SiO2, and mixing; (c) heating a mixture obtained through (b) at 85 to 200° C. for 0.5 to 20 hours so as to obtain a colloidal solution; (d) removing, from the colloidal solution obtained through (c), part of water and at least part of anions derived from the aqueous solution containing the water soluble Ca salt and/or Mg salt; and (e) heating a colloidal solution obtained through (d) at a temperature of 80 to 195° C. that is lower than a heating temperature in (c) for 0.5 to 20 hours.

    摘要翻译： 提供了一种生产细长形硅溶胶的方法，包括以下步骤：（a）将含有水溶性Ca盐和/或Mg盐的水溶液加入到活性硅酸的水溶胶体溶液中，SiO 2浓度为 1〜6质量％，活性硅酸中CaO和/或MgO与SiO 2的质量比为1500〜15000ppm的pH为2〜5，混合; （b）将碱金属氢氧化物，水溶性有机碱或其水溶性硅酸盐添加到通过（a）以与SiO 2确定的摩尔比获得的水溶液中，并混合; （c）在85〜200℃下加热通过（b）得到的混合物0.5〜20小时，得到胶体溶液; （d）从通过（c）获得的胶体溶液中除去部分水和至少部分源自含有水溶性Ca盐和/或Mg盐的水溶液的阴离子; 和（e）将（d）得到的胶体溶液在（c）中的加热温度低于80〜195℃的温度下加热0.5〜20小时。

    Process for preparing silica aquasols
    6.
    发明授权
    Process for preparing silica aquasols 失效
    制备二氧化硅水溶液的方法

    公开(公告)号：US3711419A

    公开(公告)日：1973-01-16

    申请号：US3711419D

    申请日：1970-07-02

    申请人： MONSANTO CO

    发明人： MAROTTA R

    IPC分类号： C01B33/146 ,  B01J13/00 ,  C01B33/14

    CPC分类号： C01B33/1465

    摘要： A process for preparing stable, essentially transparent alkaline silica aquasols having an average particle diameter of 5 to 10 millimicrons by adding an acidic silica sol to a dilute alkali metal silicate solution. The acidic silica sol is gradually added over a period of 4 to 8 hours such that not more than 25 weight percent of the acidic sol is added during any one hour period. At least 25 weight percent of the acidic sol is added while the temperature is maintained within a range of about 25* C. to about 50* C., at least about 7 weight percent to about 30 weight percent is added while the temperature is maintained within a range of about 50* C. to about 90* C. and the balance is added while the temperature is maintained within a range of about 70* C. to about 100* C. The last step is that of concentrating by evaporation of water.

    摘要翻译： 通过向稀碱金属硅酸盐溶液中加入酸性硅溶胶，制备平均粒径为5至10毫微米的稳定的，基本上透明的碱性二氧化硅水溶胶的方法。 在4至8小时的时间内逐渐加入酸性硅溶胶，使得在任何一小时内不加入25重量％的酸性溶胶。 当温度保持在约25℃至约50℃的范围内时，加入至少25重量％的酸性溶胶，同时保持至少约7重量％至约30重量％，同时保持温度 在约50℃至约90℃的范围内，并且在温度保持在约70℃至约100℃的范围内加入余量。最后一步是通过蒸发浓缩 水。

    Dispersion of silica particle agglomerates and process for producing the same
    8.
    发明申请
    Dispersion of silica particle agglomerates and process for producing the same 审中-公开
    二氧化硅颗粒附聚物的分散体及其制造方法

    公开(公告)号：US20030180549A1

    公开(公告)日：2003-09-25

    申请号：US10388574

    申请日：2003-03-14

    申请人： OJI PAPER CO., Ltd.

    发明人： Tetsuro Noguchi ,  Kozo Tajiri

    IPC分类号： B32B009/04

    CPC分类号： C01B33/1465

    摘要： The present invention provides a dispersion of silica particle agglomerates having a sharp particle size distribution and capable of forming a porous coating film having a high transparency by drying. The present invention also provides a process for producing a colloidal dispersion of silica particle agglomerates having a specific surface area, as determined by nitrogen adsorption method, of 100 m2/g to 400 m2/g, an average secondary particle diameter of 20 nm to 300 nm and a pore volume of 0.5 ml/g to 2.0 ml/g, which comprises using a colloidal dispersion of silica particle agglomerates having a specific surface area, as determined by nitrogen adsorption method, of 300 m2/g to 1,000 m2/g and a pore volume of 0.4 ml/g to 2.0 ml/g as a seed dispersion, adding a feed solution comprising at least one of an aqueous active silicic acid solution and alkoxysilanes to the seed dispersion in small portions in the presence of an alkali to grow silica particle agglomerates.

    摘要翻译： 本发明提供了具有尖锐粒度分布的二氧化硅颗粒附聚物的分散体，并且能够通过干燥形成具有高透明度的多孔涂膜。 本发明还提供了通过氮吸附法测定的比表面积为100m 2 / g〜400m 2 / g的二氧化硅粒子凝聚体的胶体分散体的制造方法，平均二次粒子 直径为20nm至300nm，孔体积为0.5ml / g至2.0ml / g，其包括使用通过氮吸附法测定的具有比表面积的二氧化硅颗粒附聚物的胶态分散体为300μm2 > / g至1,000m 2 / g，孔体积为0.4ml / g至2.0ml / g作为种子分散体，向种子中加入包含活性硅酸水溶液和烷氧基硅烷中的至少一种的进料溶液 在碱存在下分散分散以生长二氧化硅颗粒附聚物。

    Dispersion of silica particle agglomerates and process for producing the same
    9.
    发明申请
    Dispersion of silica particle agglomerates and process for producing the same 失效
    二氧化硅颗粒附聚物的分散体及其制造方法

    公开(公告)号：US20010011105A1

    公开(公告)日：2001-08-02

    申请号：US09764910

    申请日：2001-01-16

    发明人： Tetsuro Noguchi ,  Kozo Tajiri

    IPC分类号： C01B033/141

    CPC分类号： C01B33/1465

    摘要： The present invention provides a dispersion of silica particle agglomerates having a sharp particle size distribution and capable of forming a porous coating film having a high transparency by drying. The present invention also provides a process for producing a colloidal dispersion of silica particle agglomerates having a specific surface area, as determined by nitrogen adsorption method, of 100 m2/g to 400 m2/g, an average secondary particle diameter of 20 nm to 300 nm and a pore volume of 0.5 ml/g to 2.0 ml/g, which comprises using a colloidal dispersion of silica particle agglomerates having a specific surface area, as determined by nitrogen adsorption method, of 300 m2/g to 1,000 m2/g and a pore volume of 0.4 ml/g to 2.0 ml/g as a seed dispersion, adding a feed solution comprising at least one of an aqueous active silicic acid solution and alkoxysilanes to the seed dispersion in small portions in the presence of an alkali to grow silica particle agglomerates.

    摘要翻译： 本发明提供了具有尖锐粒度分布的二氧化硅颗粒附聚物的分散体，并且能够通过干燥形成具有高透明度的多孔涂膜。 本发明还提供了通过氮吸附法测定的比表面积为100m 2 / g〜400m 2 / g，平均二次粒径为20nm〜300μm的二氧化硅粒子聚集体的胶体分散体的制造方法 nm，孔体积为0.5ml / g至2.0ml / g，其包括使用通过氮吸附法测定的具有比表面积的二氧化硅颗粒附聚物的胶态分散体为300m 2 / g至1,000m 2 / g，以及 将孔体积为0.4ml / g至2.0ml / g作为种子分散体，在碱存在下，将少量含有活性硅酸水溶液和烷氧基硅烷中的至少一种的进料溶液加入到种子分散体中以生长 二氧化硅颗粒附聚物。

    Production of silica sols
    10.
    发明授权
    Production of silica sols 失效
    生产硅胶

    公开(公告)号：US3607774A

    公开(公告)日：1971-09-21

    申请号：US3607774D

    申请日：1969-07-30

    申请人： MONSANTO CHEMICALS

    发明人： CUMMINGS WILLIAM

    IPC分类号： C01B33/146 ,  C01B33/14

    CPC分类号： C01B33/1465

    摘要： This invention relates to a process for producing aquasols and products thereof in which the silica particles have a dissymmetry diameter greater than 500 A. which involves adding aqueous silicic acid having a pH less than 7 to a heated vessel containing a heel, an aqueous alkali metal silicate (i.e., sodium silica) solution having an initial concentration expressed as SiO2 of from about 2.5 percent to 10 percent by weight with the quantity of aqueous silicic acid added being such that the molar ratio of SiO2 added as silicic acid to M2O content of the alkali metal silicate in the heel (where M is an alkali metal atom) is at least 25:1.