中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

38 records (took 0.019 seconds)

    ALUMINIUM OXIDE POWDER PRODUCED BY FLAME HYDROLYSIS AND HAVING A LARGE SURFACE AREA
    4.
    发明申请
    ALUMINIUM OXIDE POWDER PRODUCED BY FLAME HYDROLYSIS AND HAVING A LARGE SURFACE AREA 审中-公开
    火焰水解法制备的氧化铝粉末及其大面积表面

    公开(公告)号：WO2005061385A2

    公开(公告)日：2005-07-07

    申请号：PCT/EP2004013564

    申请日：2004-11-30

    Applicant: DEGUSSA ,  SCHUMACHER KAI ,  GOLCHERT RAINER ,  SCHILLING ROLAND ,  BATZ-SOHN CHRISTOPH ,  MOERTERS MARTIN

    Inventor： SCHUMACHER KAI ,  GOLCHERT RAINER ,  SCHILLING ROLAND ,  BATZ-SOHN CHRISTOPH ,  MOERTERS MARTIN

    IPC: C01F7/02 ,  C01F7/30

    CPC classification number: C01F7/302 ,  C01P2002/01 ,  C01P2002/02 ,  C01P2002/72 ,  C01P2004/50 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/19

    Abstract: Aluminium oxide powder produced by flame hydrolysis and consisting of aggregates of primary particles, having a BET surface area of from 100 to 250 m /g, a dibutyl phthalate absorption of from 50 to 450 g/100 g of aluminium oxide powder, which powder shows only crystalline primary particles in high-resolution TEM pictures. It is prepared by vaporising aluminium chloride, transferring the vapour by means of a carrier gas to a mixing chamber and, separately therefrom, supplying hydrogen, air (primary air), which may optionally be enriched with oxygen and/or may optionally be pre-heated, to the mixing chamber, then igniting the mixture of aluminium chloride vapour, hydrogen, air in a burner and burning the flame into a reaction chamber that is separated from the surrounding air, subsequently separating the solid material from the gaseous substances and then treating the solid material with steam and optionally with air, the discharge rate of the reaction mixture from the mixing chamber into the reaction chamber being at least 10 m/s, and the lambda value being from 1 to 10 and the gamma value being from 1 to 15. It can be used as an ink-absorbing substance in ink-jet media.

    Abstract translation: 通过火焰水解制备并由初级颗粒聚集体组成的氧化铝粉末，其BET表面积为100-250平方米/克，邻苯二甲酸二丁酯吸收量为50-450克/ 100克氧化铝粉末， 该粉末在高分辨率TEM照片中仅显示结晶初级粒子。 它通过蒸发氯化铝，通过载气将蒸汽转移到混合室并与此分开地供应氢气，空气（一次空气），其可以任选地富含氧气和/或可以任选地被预处理， 加热到混合室，然后在燃烧器中点燃氯化铝蒸汽，氢气和空气的混合物，并将火焰燃烧到与周围空气分离的反应室中，随后将固体物质与气态物质分离，然后处理 具有蒸汽和任选的空气的固体材料，反应混合物从混合室进入反应室的排出速率至少为10m / s，λ值为1至10，γ值为1至10 15.它可以用作喷墨介质中的吸墨物质。

    HIGH-PURITY PYROGENICALLY PREPARED SILICON DIOXIDE
    6.
    发明申请
    HIGH-PURITY PYROGENICALLY PREPARED SILICON DIOXIDE 审中-公开
    高纯度生成二氧化硅

    公开(公告)号：WO2005026068A3

    公开(公告)日：2006-04-06

    申请号：PCT/EP2004010335

    申请日：2004-09-16

    Applicant: DEGUSSA ,  JACOBSEN HAUKE ,  OSWALD MONIKA ,  SCHUMACHER KAI ,  MOERTERS MARTIN

    Inventor： JACOBSEN HAUKE ,  OSWALD MONIKA ,  SCHUMACHER KAI ,  MOERTERS MARTIN

    IPC: C01B33/18 ,  C03B19/12 ,  C03C1/02

    CPC classification number: C01B33/183 ,  C03B19/12 ,  C03B2201/03 ,  C03C1/02 ,  Y02P40/57

    Abstract: High-purity pyrogenically prepared silicon dioxide having metal contents of less than 0.2 µg/g is prepared by reacting a silicon tetrachloride having a metal content of less than 30 ppb by means of flame hydrolysis. The silicon dioxide can be utilised for the manufacture of high-purity glasses by means of the sol-gel process, which show a high-homogenity. It can be used for the production of shaped articles, which can be used as preforms for the optical fiber spinning.

    Abstract translation: 通过火焰水解使具有小于30ppb的金属含量的四氯化硅反应制备金属含量低于0.2μg/ g的高纯度热解法制备的二氧化硅。 二氧化硅可用于通过溶胶 - 凝胶法制造高纯度玻璃，这表现出高均匀性。 它可以用于生产成型制品，其可以用作光纤纺丝的预成型件。

    7.
    发明专利
    未知

    公开(公告)号：AT497930T

    公开(公告)日：2011-02-15

    申请号：AT03767810

    申请日：2003-12-16

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： MOERTERS MARTIN ,  JACOBSEN HAUKE ,  SCHUMACHER KAI

    IPC: C01B33/00 ,  C01B33/12 ,  C01B33/18

    Abstract: Pyrogenically produced silica powder with a BET surface of 30 to 90 m2/g, a dibutyl phthalate number of at least 80 and a tamped density of no more than 110 g/l. It is produced in that at least one vaporous silicon compound, a gas containing free oxygen and a combustible gas are mixed together in a closed burner and then burnt in a flame in the flame tube of the burner, the solid obtained is separated from the gas mixture and optionally purified, wherein the oxygen content of the gas containing free oxygen is adjusted such that the lambda value is greater than or equal to 1, and the gamma value is between 1.2 and 1.8. It can be used in toner applications.

    8.
    发明专利
    未知

    公开(公告)号：AT472510T

    公开(公告)日：2010-07-15

    申请号：AT03782417

    申请日：2003-12-16

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： MOERTERS MARTIN ,  MANGOLD HELMUT ,  OSWALD MONIKA ,  SCHUMACHER KAI ,  LACH HEINZ ,  SCHNEIDER GERRIT

    IPC: C01B33/18 ,  C01B33/141 ,  C01B33/148

    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 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.

    10.
    发明专利
    未知

    公开(公告)号：DE102004001520A1

    公开(公告)日：2005-08-04

    申请号：DE102004001520

    申请日：2004-01-10

    Applicant: DEGUSSA

    Inventor： SCHUMACHER KAI ,  MOERTERS MARTIN ,  KLOTZ OSWIN ,  DIENER UWE

    IPC: A61K8/18 ,  A61K8/00 ,  A61K8/25 ,  A61K8/29 ,  A61Q1/00 ,  A61Q1/02 ,  A61Q17/04 ,  B01J35/02 ,  C01B13/14 ,  C01B33/113 ,  C01B33/12 ,  C01B33/18 ,  C01B33/20 ,  C01G1/02 ,  C01G23/00 ,  C01G23/04 ,  C01G23/047 ,  C01G23/07 ,  C04B2/00 ,  C04B14/20 ,  C04B35/626 ,  C09C1/36

    Abstract: Flame hydrolytically-produced silicon-titanium mixed oxide powders consisting of aggregates of primary particles are such that (A) the primary particles are predominantly of Si-Ti mixed oxide; and (B) the powder has a BET surface area 20-200 m 2>/g, a TiO 2fraction of 10-70 wt.% and a rutile/anatase X-ray diffraction diagram of rutile/anatase ratio 2 : 98-2 : 98. Flame hydrolytically-produced silicon-titanium mixed oxide powders consisting of aggregates of primary particles are such that: (A) the primary particles are of amorphous silicon dioxide, crystalline titanium dioxide or silicon-titanium mixed oxide with an amorphous SiO 2and crystalline TiO 2fraction so that Si-Ti mixed oxide primary particles predominate; and (B) the powder has a BET surface area 20-200 m 2>/g, a TiO 2fraction of 10-70 wt.% and a rutile/anatase X-ray diffraction diagram of rutile/anatase ratio 2 : 98-2 : 98. An independent claim is also included for preparation of the powders.

Patent Agency Ranking