Method for producing ultra-high purity, optical quality glass articles
    1.
    发明授权
    Method for producing ultra-high purity, optical quality glass articles 失效
    生产超高纯度光学优质玻璃制品的方法

    公开(公告)号:US07069746B2

    公开(公告)日:2006-07-04

    申请号:US10266630

    申请日:2002-10-09

    IPC分类号: C03B19/09 C03B11/06 C03B5/00

    摘要: A method for producing ultra-high purity, optical quality, glass articles is disclosed which involves: 1. compacting metaloxide or metalloidoxide to granules having a mean particle size of less than about 1 millimeter; 2. optionally fully sintering the granules to produce high purity, artificial sand; 3. casting the artificial sand by conventional techniques, such as, slip casting, to form a high density, porous, green body; 4. optionally drying and partially sintering the green body; 5. optionally fully sintering the green body under vacuum; and 6. optionally hot isostatic pressing the green body.

    摘要翻译: 公开了一种生产超高纯度,光学品质的玻璃制品的方法,其涉及:1.将金属氧化物或金属氧化物压制成具有小于约1毫米的平均粒度的颗粒; 2.可选地完全烧结颗粒以产生高纯度人造砂; 3.通过常规技术如滑移铸造铸造人造砂,形成高密度,多孔,生坯; 4.可选地干燥和部分烧结生坯; 5.选择在真空下完全烧结生坯; 和6.可选的热等静压按压生坯。

    Method of producing glass of optical quality
    2.
    发明申请
    Method of producing glass of optical quality 审中-公开
    制造光学品质玻璃的方法

    公开(公告)号:US20080213497A1

    公开(公告)日:2008-09-04

    申请号:US11978715

    申请日:2007-10-30

    IPC分类号: B05D1/08 C03B37/018

    摘要: Glass is produced by depositing presintering composition on a preform set into move in front of a plasma torch which moves back and forth substantially parallel to a longitudinal direction of the preform, a first feed duct feeds the plasma with grains of the presintering composition while optionally a second feed duct feeds the plasma with a fluorine or chlorine compound, preferably a fluorine compound, mixed with a carrier gas.

    摘要翻译: 玻璃是通过将预烧结组合物沉积在等离子体焰炬之前移动的预成型体上制造的,所述等离子体焰炬基本上平行于预成型件的纵向方向前后移动,第一进料管将预烧结组合物的颗粒进料到等离子体, 第二进料管将等离子体与载气混合的氟化合物或氯化合物,优选氟化合物进料。

    Pyrogenic silicon dioxide and a dispersion thereof
    4.
    发明授权
    Pyrogenic silicon dioxide and a dispersion thereof 有权
    热解二氧化硅及其分散体

    公开(公告)号:US07722849B2

    公开(公告)日:2010-05-25

    申请号:US10530491

    申请日:2003-12-16

    摘要: Pyrogenic silicon dioxide powder with a BET surface area of 30 to 90 m2/g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm. It is prepared by mixing at least one silicon compound in vapor form, a free-oxygen-containing gas and a combustible gas in a burner of known construction, igniting this gas mixture at the mouth of the burner and burning it in the flame tube of the burner, separating the solid obtained from the gas mixture and optionally purifying, wherein the oxygen content of the free-oxygen-containing gas is adjusted so that the lambda value is greater than or equal to 1, the gamma value is between 1.2 and 1.8, the throughput is between 0.1 and 0.3 kg SiO2/m3 of core gas mixture and the mean normalized rate of flow of gas in the flame tube at the level of the mouth of the burner is at least 5 m/s. The powder can be used as a filler. A dispersion containing the powder according to the invention. The powder can be used as a filler in rubber, silicone rubber and plastics. The dispersion can be used to prepare glass items.

    摘要翻译: 热解二氧化硅粉末,其BET表面积为30〜90m2 / g,DBP指数为80以下,平均聚集面积小于25000nm 2,平均聚集体周长小于1000nm,其中,至少70% 的聚集体具有小于1300nm的圆周。 通过在已知结构的燃烧器中混合至少一种蒸汽形式的硅化合物,含游离氧的气体和可燃气体来制备,在燃烧器的口部点燃该气体混合物并将其燃烧在燃烧器的火焰管中 燃烧器,分离从气体混合物获得的固体并任选地进行纯化,其中调节含游离氧气体的氧含量使λ值大于或等于1,γ值在1.2和1.8之间 ,核心气体混合物的通量在0.1至0.3kg SiO 2 / m 3之间,并且在燃烧器口处的火焰管中气体的平均归一化流速至少为5m / s。 粉末可用作填料。 含有本发明粉末的分散体。 该粉末可用作橡胶,硅橡胶和塑料中的填料。 分散体可用于制备玻璃制品。

    Pyrogenic Silicon Dioxide and a Dispersion Thereof
    5.
    发明申请
    Pyrogenic Silicon Dioxide and a Dispersion Thereof 有权
    热解二氧化硅及其分散体

    公开(公告)号:US20080045411A1

    公开(公告)日:2008-02-21

    申请号:US10530491

    申请日:2003-12-16

    摘要: Pyrogenic silicon dioxde powder with a BET surface area of 30 to 90 m2/g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm, It is prepared by mixing at least one silicon compound in vapour form, a free-oxygen-containing gas and a combustible gas in a burner of known construction, igniting this gas mixture at the mouth of the burner and burning it in the flame tube of the burner, separating the solid obtained from the gas mixture and optionally purifying, wherein the oxygen content of the free-oxygen-containing gas is adjusted so that the lambda value is greater than or equal to 1, the gamma value is between 1.2 and 1.8, the throughput is between 0.1 and 0.3 kg SiO2/m3 of core gas mixture and the mean normalised rate of flow of gas in the flame tube at the level of the mouth of the burner is at least 5 m/s. The powder can be used as a filler. A dispersion containing the powder according to the invention. The powder can be used as a filler in rubber, silicone rubber and plastics. The dispersion can be used to prepare glass items.

    摘要翻译: BET表面积为30〜90m 2 / g,DBP指数为80以下,平均聚集面积小于25000nm 2的热解二氧化硅粉末, 并且平均聚集体周长小于1000nm,其中至少70%的聚集体具有小于1300nm的周长。它是通过将至少一种蒸气形式的硅化合物,含游离氧的气体和 在已知结构的燃烧器中的可燃气体,在燃烧器的口部点燃该气体混合物,并将其燃烧在燃烧器的火焰管中,分离从气体混合物获得的固体并任选地进行净化,其中游离的 调节含氧气体,使得λ值大于或等于1,γ值在1.2和1.8之间,生产量在0.1至0.3kg之间,核心的SiO 2 / m 3 气体混合物,并且在燃烧器口处的火焰管中的气体的平均归一化流速为l 东5米/秒。 粉末可用作填料。 含有本发明粉末的分散体。 该粉末可用作橡胶,硅橡胶和塑料中的填料。 分散体可用于制备玻璃制品。

    Pyrogenically prepared silicon dioxide
    7.
    发明授权
    Pyrogenically prepared silicon dioxide 有权
    热解制备的二氧化硅

    公开(公告)号:US06679945B2

    公开(公告)日:2004-01-20

    申请号:US09931161

    申请日:2001-08-17

    IPC分类号: C04B1404

    CPC分类号: C03C3/06 C03C1/02 Y10S65/901

    摘要: Pyrogenically prepared silicon dioxide with the following physicochemical properties: 1. Average particle size (D50 value)D50≧150 nm (dynamic light scattering, 30 wt %) 2. Viscosity (5 rpm, 30 wt %) &eegr;≦100 m·Pas 3. Thixotropy of Ti (&eegr;(5 rpm))/(&eegr;(50 rpm))≦2 4. BET surface area 30-60 m2/g 5. Compacted bulk=100-160 g/L 6. Original pH≦4.5 can be used for the preparation of dispersions and glass bodies.

    摘要翻译: 热解制备的二氧化硅具有以下物理化学性质:1。 平均粒径(D50值)D50> = 150nm(动态光散射,30重量%)2。 粘度(5rpm,30wt%)eta <= 100M.PAS3。 Ti(eta(5rpm))/(eta(50rpm))的触变性= 24。 BET表面积30-60m 2 / g5。 压实体积= 100-160 g / L6。 原始pH <= 4.5可用于制备分散体和玻璃体。

    Dispersion of aluminium oxide
    10.
    发明授权
    Dispersion of aluminium oxide 有权
    氧化铝的分散

    公开(公告)号:US07572854B2

    公开(公告)日:2009-08-11

    申请号:US10277130

    申请日:2002-10-22

    IPC分类号: C08K3/18 D06M15/263

    摘要: Aqueous dispersions of a pyrogenically-produced aluminum oxide are prepared form a mixture containing water, additives and a high-surface-area pyrogenically-produced aluminum oxide with a BET specific surface area of more than 115 m2/g and a Sears number of more than 8 ml/2 g using controlled high shearing conditions. Prior to subjecting the mixture to high shear conditions, the pH of the mixture is adjusted to a value between of 2 to 11 (preferably 3 to 8). The aqueous dispersion has a mean particle size distribution of d50

    摘要翻译: 热解产生的氧化铝的水分散体由含有水,添加剂和BET比表面积大于115m 2 / g的高表面积热解生成氧化铝的混合物制备,并且Sears数大于 8 ml / 2 g,使用受控的高剪切条件。 在使混合物经受高剪切条件之前,将混合物的pH调节至2至11(优选3至8)之间的值。 水分散体的平均粒度分布为d50 <150nm。 这些分散体可用于喷墨介质,数字成像产品和其他印刷介质的生产,并产生高色密度,照相现实的复制品,特别是良好的印刷和光泽品质。