Grain aggregate and producing method thereof, and light-diffusing agent
    1.
    发明授权
    Grain aggregate and producing method thereof, and light-diffusing agent 失效
    颗粒聚集体及其制备方法和光扩散剂

    公开(公告)号:US06610405B2

    公开(公告)日:2003-08-26

    申请号:US09847367

    申请日:2001-05-03

    IPC分类号: B32B516

    摘要: A grain aggregate is formed by bonding a plurality of cross-linking polymeric grains via a substance (binder) having a reactive functional group, and alternatively, the grain aggregate is formed by bonding at least two different types of a plurality of grains, thus providing the grain aggregate having the improved heat resistance, solvent resistance, strength and light-diffusing properties. Further, a light-diffusing agent made up of the grain aggregate has the improved light-diffusing properties. Therefore, when applying a light-diffusing mold article including the light-diffusing agent to, for example, a backlight of a liquid crystal display device, high brightness and a wide angle of visibility can be attained. Further, by spray drying of a dispersion liquid containing the grain aggregate, the grain aggregate can be produced with ease.

    摘要翻译: 通过通过具有反应性官能团的物质(粘合剂)将多个交联聚合物颗粒结合而形成颗粒聚集体,或者,通过粘结至少两种不同类型的多个颗粒形成颗粒聚集体,从而提供 所述颗粒聚集体具有改善的耐热性,耐溶剂性,强度和光扩散性能。 此外,由粒状集合体构成的光扩散剂具有改善的光扩散性。 因此,当将例如包含光扩散剂的光扩散模制品应用于例如液晶显示装置的背光源时,可以获得高亮度和广视角。 此外,通过喷雾干燥含有颗粒聚集体的分散液,可以容易地制备颗粒聚集体。

    Thermosetting resin potting composition
    2.
    发明授权
    Thermosetting resin potting composition 有权
    热固性树脂灌封组合物

    公开(公告)号:US06169136A

    公开(公告)日:2001-01-02

    申请号:US09134564

    申请日:1998-08-14

    IPC分类号: C08K300

    CPC分类号: C08K3/36

    摘要: The present invention provides a thermosetting resin potting composition with low melt viscosity and good flowability even though it contains large amount of an inorganic filler containing sphere silica powder as a main component. With this construction, the present invention has solved the problem residing in the prior art that, when the content of an inorganic filler is increased, the viscosity of a potting composition is increased and its flowability is lowered. In the present invention, the sphere silica particles in the inorganic filler have at least one particle group, and the particle group has an average particle diameter of 0.01 to 10 &mgr;m and a coefficient of particle diameter variation of 10 percent or smaller. More preferably, the sphere silica particles have two or more particle groups. In this case, the average particle diameter of the larger particle group is 1.4 times or larger than that of its adjacent and smaller particle group.

    摘要翻译: 本发明提供即使含有大量含有球状二氧化硅粉末的无机填充剂作为主要成分的熔融粘度低,流动性好的热固性树脂灌封组合物。 利用这种结构,本发明解决了现有技术中存在的问题:当无机填料的含量增加时,灌封组合物的粘度增加,流动性降低。在本发明中,球状二氧化硅 无机填料中的粒子具有至少一个粒子群,粒子群的平均粒径为0.01〜10μm,粒径变化系数为10%以下。 更优选地,球状二氧化硅颗粒具有两个或更多个颗粒组。 在这种情况下,较大粒子群的平均粒径为其相邻且较小粒子群的平均粒径的1.4倍以上。

    Silica base particles and production process for same
    3.
    发明授权
    Silica base particles and production process for same 失效
    二氧化硅基体颗粒和生产工艺相同

    公开(公告)号:US6150434A

    公开(公告)日:2000-11-21

    申请号:US208259

    申请日:1998-12-09

    IPC分类号: C08K9/04 C08K9/00

    CPC分类号: C08K9/04

    摘要: Provided is a silica base particle having an average particle diameter of 0.01 to 10 .mu.m, wherein carboxylic esters are present on the surface of the above particle in a proportion falling in a range of 0.05 to 10% by weight based on the weight of the above particle. A polyester film containing the above silica base particles shows an excellent lubricant property and scratch resistance.

    摘要翻译: 本发明提供平均粒径为0.01〜10μm的二氧化硅基粒子,其中羧酸酯以上述粒子的重量为基准,为0.05〜10重量% 颗粒以上。 含有上述二氧化硅基础颗粒的聚酯膜显示出优异的润滑性和耐擦伤性。

    Calcined silica particle and manufacturing method of same
    4.
    发明申请
    Calcined silica particle and manufacturing method of same 审中-公开
    煅烧二氧化硅颗粒及其制备方法

    公开(公告)号:US20070160520A1

    公开(公告)日:2007-07-12

    申请号:US11710445

    申请日:2007-02-26

    IPC分类号: C01B33/12 B60C1/00

    摘要: Provided is a calcined silica particle and a manufacturing method of the same, the calcined silica particle having a low hygroscopicity, and a narrow range of particle size distribution, and substantially even particle diameter, and containing little of large-diameter fused aggregation of the particulates of the calcined silica particle. A silica particle is obtained by hydrolyzing and condensing a hydrolyzable silicon compound in an organic solvent containing water, for example, at a reaction temperature ranging from 0° C. to 50° C., and then dried. Then, the silica particle is calcined at a temperature ranging from 1000° C. to 1200° C. It is preferable that the organic solvent contains the silicon compound in a range between 0.05 to 1.2 mol/L, the water in a range between 2.0 to 25.0 mol/L, and a catalyst in a range between 0.8 to 9.4 mol/L. The calcined silica particle has an average particle diameter ranging between 0.04 μm and 5.0 μm; a standard deviation of the average particle diameter of 1.3 μm or less; a moisture absorption amount of 0.2 wt % or less, measured after the calcined silica particle is kept for 1 day in an environment at 30° C. and at 90% relative humidity; and a content of a fused aggregation of the calcined silica particle of 0.02 wt % or less, the fused aggregation having a particle diameter of 20 μm or more.

    摘要翻译: 提供了煅烧二氧化硅颗粒及其制造方法,煅烧二氧化硅颗粒具有低吸湿性,窄范围的粒度分布,基本上均匀的粒径,并且几乎不含有微粒的大直径熔融聚集体 的煅烧二氧化硅颗粒。 通过在含水的有机溶剂中,例如在0℃至50℃的反应温度下水解和缩合可水解的硅化合物而获得二氧化硅颗粒,然后干燥。 然后,将二氧化硅粒子在1000℃〜1200℃的温度范围内进行煅烧。优选有机溶剂含有0.05〜1.2mol / L的硅化合物,2.0〜 至25.0mol / L,催化剂为0.8〜9.4mol / L。 煅烧二氧化硅颗粒的平均粒径在0.04μm和5.0μm之间; 平均粒径的标准偏差为1.3μm以下; 在30℃,90%相对湿度的环境下,煅烧二氧化硅粒子保持1天后测定的0.2重量%以下的吸湿量; 和煅烧二氧化硅颗粒的熔融聚集物的含量为0.02重量%以下,熔融聚集体的粒径为20μm以上。

    Process for producing amino resin particles

    公开(公告)号:US06610818B2

    公开(公告)日:2003-08-26

    申请号:US10034089

    申请日:2001-12-28

    IPC分类号: C08J510

    摘要: A process for producing amino resin particles includes: a reaction process for obtaining a reaction solution containing an amino resin precursor which is obtained by a reaction of an amino compound with formaldehyde, and having a viscosity in a range of from 2×10−2 Pa·s to 5.8×10−2 Pa·s at a temperature in a range of from 95° C. to 98° C.; an emulsion process for obtaining an emulsion by emulsifying the reaction solution; and a curing process for curing the amino resin precursor in the emulsion state by adding a catalyst to the emulsion. With this producing process, it is possible to readily produce amino resin particles with an essentially uniform particle size (narrow particle size distribution). Further, with use of an aqueous dispersion of an inorganic pigment which is obtained by wet pulverizing the inorganic pigment in an aqueous medium until the average particle size of the inorganic pigment measured by a light scattering method becomes not more than 300 nm, it is possible to obtain amino resin particles with superior properties in coloring strength, visibility, heat resistance, solvent resistance, and chemicals resistance.

    Amino resin composite particle and method of producing same
    6.
    发明授权
    Amino resin composite particle and method of producing same 失效
    氨基树脂复合颗粒及其制备方法

    公开(公告)号:US07378153B2

    公开(公告)日:2008-05-27

    申请号:US10230409

    申请日:2002-08-29

    IPC分类号: B32B1/00

    摘要: The present invention provides an amino resin composite particle in which an inorganic compound is fixed (firmly adhered) on a surface of an amino resin particle, for example, an amino resin composite particle, in which a child particle made of the inorganic compound is fixed on a mother particle made of the amino resin particle, and a method of easily and inexpensively producing the amino resin composite particle. After an amino compound such as benzoguanamine is reacted with formaldehyde, so as to prepare a reaction mixture containing an amino resin precursor to be the mother particle, an emulsion of the reaction mixture and an aqueous solution of an emulsifier, and an aqueous dispersion of the inorganic compound, such as silica powder, to be the child particle are mixed with a shear force application, so as to emulsify them to have an emulsion thereof. The emulsion is hardened by adding a catalyst. The thus obtained amino resin composite particle has a firm-adhering ratio of the inorganic compound of 10% or more.

    摘要翻译: 本发明提供一种氨基树脂复合颗粒,其中将无机化合物固定(牢固地粘合)在氨基树脂颗粒的表面上,例如氨基树脂复合颗粒,其中由无机化合物制成的儿童颗粒是固定的 在由氨基树脂颗粒制成的母体颗粒上,以及容易且廉价地制备氨基树脂复合颗粒的方法。 在将氨基化合物如苯并胍胺与甲醛反应之后,制备含有作为母体的氨基树脂前体的反应混合物,反应混合物的乳液和乳化剂的水溶液和水分散体 将作为子粒子的无机化合物如二氧化硅粉末与剪切力混合,以使其乳化成具有其乳液。 通过加入催化剂使乳液硬化。 由此得到的氨基树脂复合粒子的无机化合物的固着比例为10%以上。

    Method for production of microfine colored particles and
electrophotographic toner, using the particles
    7.
    发明授权
    Method for production of microfine colored particles and electrophotographic toner, using the particles 失效
    使用该颗粒生产微细着色颗粒和电子照相调色剂的方法

    公开(公告)号:US5929139A

    公开(公告)日:1999-07-27

    申请号:US947359

    申请日:1997-10-08

    IPC分类号: G03G9/08 C08J3/12

    CPC分类号: G03G9/0815 G03G9/0806

    摘要: A method for the recovery of microfine suspended particles from a suspension medium, characterized by subjecting a polymeric monomer suspended in a suspension medium to suspension polymerization thereby forming microfine globular particles in the suspension solution, adding microfine water-insoluble particles to said suspension solution of microfine globular particles thereby inducing cohesion of said microfine globular particles, and separating said microfine globular particles in the form of an aggregate from said suspension solution filtration.

    摘要翻译: 一种从悬浮介质中回收微细悬浮颗粒的方法,其特征在于将悬浮在悬浮介质中的聚合物单体进行悬浮聚合,从而在悬浮液中形成微细球状颗粒,将微细水不溶性微粒加入到微细悬浮液中 从而引起所述微细球状颗粒的内聚,并将所述聚集体形式的所述微细球状颗粒与所述悬浮溶液过滤分离。

    Method for production of microfine colored particles and
electrophotographic toner using the particles
    8.
    发明授权
    Method for production of microfine colored particles and electrophotographic toner using the particles 失效
    使用这些颗粒生产微细着色颗粒和电子照相调色剂的方法

    公开(公告)号:US5559168A

    公开(公告)日:1996-09-24

    申请号:US82365

    申请日:1993-06-28

    摘要: A method for the production of microfine colored particles, characterized by subjecting a polymeric monomer suspended in a suspension medium to suspension polymerization in the presence of a coloring agent and/or a magnetic powder thereby forming microfine globular colored particles possessing an average particle diameter in the range of from 3 to 50 .mu.m, heat treating said microfine globular colored particles with water as a heating medium at a temperature in the range of from 50.degree. C. to 130.degree. C. thereby inducing fusion of said particles and giving rise to blocks of fused particles, and then disintegrating said blocks of particles to an average particle diameter substantially equal to the average particle diameter of said microfine globular colored particles existent prior to said fusion.

    摘要翻译: 一种制造微细着色颗粒的方法,其特征在于使悬浮在悬浮介质中的聚合物单体在着色剂和/或磁性粉末存在下进行悬浮聚合,从而形成具有平均粒径的微球状有色颗粒 范围为3至50μm,用水作为加热介质在50℃至130℃的温度范围内热处理所述微细球状有色颗粒,从而引起所述颗粒的熔合并产生块 的熔融颗粒,然后在所述熔融之前将所述颗粒块分解成基本上等于所述微细球状有色颗粒的平均粒径的平均粒径。