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    A METHOD OF PRODUCING GLASS OF OPTICAL QUALITY
    2.
    发明申请
    A METHOD OF PRODUCING GLASS OF OPTICAL QUALITY 审中-公开
    生产光学玻璃的方法

    公开(公告)号：WO2006094877A1

    公开(公告)日：2006-09-14

    申请号：PCT/EP2006/050954

    申请日：2006-02-15

    Applicant: DEGUSSA AG ,  OSWALD, Monika ,  MEYER, Jürgen ,  DELLER, Klaus

    Inventor： OSWALD, Monika ,  MEYER, Jürgen ,  DELLER, Klaus

    IPC: C03B37/012 ,  C03B19/01 ,  C03B19/10 ,  C01B33/18

    CPC classification number: C03B37/01291 ,  C03B19/01 ,  C03B19/102 ,  C03B19/106 ,  C03B2201/07 ,  C03B2201/12

    Abstract: 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, whereby the presintering composition consists of granules of metal oxides or metalloid oxides of a 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 or a high-purity pyrogenically prepared silicon dioxide having metal contents of less than 0.2 μg/g, which is prepared by reacting a silicon tetrachloride having a metal content of less than 30 ppb by means of flame hydrolysis.

    Abstract translation: 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体气体混合的氟或氯化合物，优选氟化合物进料，其中预烧结组合物由BET表面积为30的热解二氧化硅粉末的金属氧化物或准金属氧化物颗粒组成 至90m 2 / 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 或金属含量小于0.2μg/ g的高纯度热解法制备的二氧化硅，其通过使金属含量为1的四氯化硅 通过火焰水解30埃以上。

    PYROGENIC SILICON DIOXIDE AND A DISPERSION THEREOF
    4.
    发明申请
    PYROGENIC SILICON DIOXIDE AND A DISPERSION THEREOF 审中-公开
    有机硅二氧化硅及其分散体

    公开(公告)号：WO2004054929A1

    公开(公告)日：2004-07-01

    申请号：PCT/EP2003/014322

    申请日：2003-12-16

    Applicant: DEGUSSA AG ,  MÖRTERS, Martin ,  MANGOLD, Helmut ,  OSWALD, Monika ,  SCHUMACHER, Kai ,  LACH, Heinz ,  SCHNEIDER, Gerrit

    Inventor： MÖRTERS, Martin ,  MANGOLD, Helmut ,  OSWALD, Monika ,  SCHUMACHER, Kai ,  LACH, Heinz ,  SCHNEIDER, Gerrit

    IPC: C01B33/18

    CPC classification number: C03C3/04 ,  B82Y30/00 ,  C01B33/1417 ,  C01B33/1485 ,  C01B33/183 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/22

    Abstract: 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 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.

    Abstract translation: 热解二氧化硅粉末，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，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过量为0.1至0.3kg SiO 2 / m 3，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。

    DISPERSION OF ZIRCONIUM DIOXIDE AND ZIRCONIUM MIXED OXIDE
    9.
    发明申请
    DISPERSION OF ZIRCONIUM DIOXIDE AND ZIRCONIUM MIXED OXIDE 审中-公开
    二氧化锆和二氧化锆混合氧化物的分散

    公开(公告)号：WO2006067131A1

    公开(公告)日：2006-06-29

    申请号：PCT/EP2005/056940

    申请日：2005-12-20

    Applicant: DEGUSSA AG ,  OSWALD, Monika ,  KISSNER, Corinna ,  LORTZ, Wolfgang

    Inventor： OSWALD, Monika ,  KISSNER, Corinna ,  LORTZ, Wolfgang

    IPC: C01G25/02 ,  C04B35/486 ,  C09K3/14

    CPC classification number: C09C1/0012 ,  B82Y30/00 ,  C01G25/02 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/22 ,  C04B35/486 ,  C04B35/6261 ,  C04B35/62615 ,  C04B35/62625 ,  C04B35/6263 ,  C04B35/6264 ,  C04B35/62655 ,  C04B35/62665 ,  C04B35/63 ,  C04B35/632 ,  C04B2235/3225 ,  C04B2235/441 ,  C04B2235/449 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/5481 ,  C04B2235/549 ,  C04B2235/76 ,  C04B2235/765 ,  C04B2235/77 ,  C09C1/00 ,  C09K3/1436

    Abstract: Dispersion of zirconium dioxide having a solids content of from 30 to 75 wt.%, based on the total amount of the dispersion, and a median value of the particle size distribution in the dispersion of less than 200 nm, obtainable by predispersing a zirconium dioxide powder and/or a zirconium mixed oxide powder having a ZrC>2 content of at least 70 wt.%, the powders being in the form of aggregated primary particles and having no internal surface and a BET surface area of the powder of 60 ± 15 m2/g, in a dispersing agent in the presence of from 0.1 to 5 wt.%, based on the total amount of the dispersion, of a surface- modifying agent with an energy input of less than 200 KJ/m3, dividing the predispersion obtained into at least two part streams, placing these part streams under a pressure of at least 500 bar in a high-energy mill and decompress them via a nozzle, these part streams colliding with one another in a gas- or liquid-filled reaction chamber and thereby being ground, and optionally subsequently adjusting the dispersion to the desired content with further dispersing agent. It can be used for the production of ceramic layers, membranes and shaped articles .

    Abstract translation: 基于分散体的总量，固体含量为30至75重量％的二氧化锆的分散体，以及小于200nm的分散体中的粒度分布的中值，可通过预分散二氧化锆 粉末和/或具有至少70重量％的ZrC> 2含量的锆混合氧化物粉末，粉末为聚集的一次颗粒的形式，并且没有内表面，粉末的BET表面积为60±15 m 2 / g，在分散剂中，基于分散体的总量为0.1至5重量％，具有能量输入小于200KJ / m 3的表面改性剂，将预分散体 获得至少两部分流，将这些部分物流在高能磨机中放置至少500巴的压力下，并通过喷嘴对其进行减压，这些部分物流在气体或液体填充的反应室中相互碰撞 并因此被研磨，并且可选地 随后用其它分散剂将分散体调节至所需的含量。 它可用于生产陶瓷层，膜和成型制品。

    METAL OXIDE SOL, LAYER PRODUCED THEREWITH AND SHAPED ARTICLE
    10.
    发明申请
    METAL OXIDE SOL, LAYER PRODUCED THEREWITH AND SHAPED ARTICLE 审中-公开
    金属氧化物SOL，制成的层和形状的物品

    公开(公告)号：WO2005123578A1

    公开(公告)日：2005-12-29

    申请号：PCT/EP2005/006244

    申请日：2005-06-10

    Applicant: DEGUSSA AG ,  DENG, Yi ,  OSWALD, Monika ,  DELLER, Klaus

    Inventor： DENG, Yi ,  OSWALD, Monika ,  DELLER, Klaus

    IPC: C01B13/32

    CPC classification number: C09C1/3081 ,  B82Y30/00 ,  C01B13/145 ,  C01B13/32 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/82 ,  C01P2006/12 ,  C03B19/12 ,  C03C1/008 ,  C03C17/02 ,  C09C1/3054 ,  C09C1/3661 ,  C09C1/3684 ,  C09C1/407 ,  C09C3/063 ,  C09C3/12 ,  Y10T428/29

    Abstract: Process for the preparation of a binder-free metal oxide sol, comprising the steps: a) initial introduction into a vessel of a metal oxide dispersion, wherein the metal oxide powder in the dispersion has an average, number-related aggregate diameter of less than 200 nm, and b1) addition of a metal alcoholate M(OR) x , and optionally of a hydrolysis catalyst, or b2) addition of a starting sol which is obtained by hydrolysis of a metal alcoholate M(OR) x with a hydrolysis catalyst, and the weight-related ratio of metal oxide from the hydrolysis to metal oxide in the dispersion is 0.01 to 1. Metal oxide sol obtainable by this process. Coated substrate which can be produced by means of the metal oxide sol, and shaped article.

    Abstract translation: 制备无粘合剂的金属氧化物溶胶的方法，包括以下步骤：a）初始引入金属氧化物分散体的容器中，其中分散体中的金属氧化物粉末的平均数目相关的聚集体直径小于 200nm，b1）加入金属醇化物M（OR）x和任选的水解催化剂，或b2）加入通过用水解催化剂水解金属醇化物M（OR）x而获得的起始溶胶 ，并且在分散体中金属氧化物从水解成金属氧化物的重量比为0.01〜1。通过该方法可以得到金属氧化物溶胶。 可以通过金属氧化物溶胶制成的涂布基材和成型制品。

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