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公开(公告)号：DE102004003675A1
公开(公告)日：2005-08-11
申请号：DE102004003675
申请日：2004-01-24
Applicant: DEGUSSA
Inventor： MICHAEL GUENTHER , HEBERER STEFAN , MERTSCH RUEDIGER , MAIER ROBERT , JETTON SIMONE , PEUTER FRANS DE
IPC: C01G9/02 , C03C17/00 , C08K3/00 , C08K3/20 , C08K3/22 , C08K9/06 , C09C1/04 , C09D5/02 , C09D5/12 , C08L33/08
Abstract: The present invention provides a dispersion, which contains nano-sized zinc oxide particles, a coating preparation containing the dispersion, a process for the production of the dispersion, and a coating preparation containing the dispersion, and a use of the coating preparation.
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公开(公告)号：CA2494768A1
公开(公告)日：2004-02-19
申请号：CA2494768
申请日：2003-07-07
Applicant: DEGUSSA
Inventor： KATUSIC STIPAN , VARGA GEOFFREY J , KRESS PETER , MICHAEL GUENTHER , ZIMMERMANN GUIDO , GUTSCH ANDREAS
Abstract: Pyrogenically prepared, doped zinc oxide powder, wherein the doping componen t comprises at least one oxide from the group aluminium, gallium, indium, germanium, tin and is present in the doped zinc oxide powder in an amount of from 0.005 to 15 wt.%, and wherein the doped zinc oxide powder is in the for m of aggregates of primary particles having a mean maximum diameter of from 30 to 400 nm. It is prepared by oxidation from zinc powder and at least one doping agent, wherein the process zones vaporisation, nucleation, oxidation and quenching are passed through and the doping agent is metered in in the nucleation zone, in which the temperature is below the boiling temperature o f zinc. The doped zinc oxide powder can be used in electrically conductive lacquers and coatings.
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公开(公告)号：DE10138573A1
公开(公告)日：2003-03-06
申请号：DE10138573
申请日：2001-08-06
Applicant: DEGUSSA
Inventor： KATUSIC STIPAN , DELLER KLAUS , MICHAEL GUENTHER , HENNIG THOMAS , REINHART SUSANNE , TIETZE ANDREA
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公开(公告)号：GB2357497A
公开(公告)日：2001-06-27
申请号：GB0030863
申请日：2000-12-18
Applicant: DEGUSSA
Inventor： MICHAEL GUENTHER , KASACK VOLKER , NOWAK RUEDIGER
Abstract: Hydrophobic, pyrogenically produced silica having a tamped density of 55 to 200 g/l is produced by hydrophobising pyrogenically produced silica and then compacting it. Said silica may be used for the production of dispersions. The silica may made hydrophobic by treatment with halogen-free silanes.
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公开(公告)号：DE102007024365A1
公开(公告)日：2008-11-27
申请号：DE102007024365
申请日：2007-05-22
Applicant: EVONIK DEGUSSA GMBH
Inventor： MEYER JUERGEN , SPITZNAGEL KURT , MICHAEL GUENTHER , GROS TINA
IPC: C01B33/18 , C09D133/02 , C09D133/10
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Patent Agency Ranking
公开(公告)号：DE102005038136A1
公开(公告)日：2007-02-15
申请号：DE102005038136
申请日：2005-08-12
Applicant: DEGUSSA
Inventor： KATUSIC STIPAN , KROELL MICHAEL , KRAEMER MICHAEL , HEBERER STEFAN , STAAB EDWIN , MICHAEL GUENTHER
Abstract: Ceric oxide powder (I) of crystalline primary particles with carbonate groups on surface and in layer near surface has Brunauer Emmett Teller (BET) surface area 25-150 m 2>/g, average primary particle diameter 5-50 nm and surface layer about 5 nm deep; has carbonate concentration decreasing continuously from surface, so that carbon (C) content from carbonate groups is 5-50 area-% at surface and 0-30 area-% at depth of about 5 nm; and contains not less than 99.5 wt.% ceric oxide, calculated as CeO 2, and 0.01-0.3 wt.% (in)organic C with respect (I). Independent claims are included for the following: (1) production of (I); (2) (I) produced by this process; (3) dispersion containing (I); (4) use of (I) or dispersion for chemical-mechanical polishing; (5) use of (I) as catalyst, UV absorber, toner component or constituent of fuel cells.
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公开(公告)号：DE10235758A1
公开(公告)日：2004-02-26
申请号：DE10235758
申请日：2002-08-05
Applicant: DEGUSSA
Inventor： KATUSIC STIPAN , MICHAEL GUENTHER , KRES PETER , ZIMMERMANN GUIDO , GUTSCH ANDREAS , VARGA GEOFFREY
IPC: C01G9/02 , A61K8/27 , A61Q17/04 , C01G9/00 , C01G9/03 , C09C1/04 , H01B1/08 , H01B13/00 , C08K3/22
Abstract: Doped zinc oxide powder comprises doping component (0.005-15 wt.%). The doping component comprises oxides of aluminum, gallium, indium, germanium, tin, and/or silicon. The zinc oxide powder is in the form of aggregates having a mean maximum diameter of 30-300 nm. An Independent claim is also included for preparation of zinc oxide powder by treating zinc powder and doping agent(s) in vaporization, nucleation, oxidation, and quenching zones. In the vaporization zone, zinc powder is vaporized in a flame of air and/or oxygen and combustion gas under reaction conditions that oxidation of zinc does not occur. The hot reaction mixture from the vaporization zone containing zinc vapor, water vapor (reaction product of flame reaction), and optionally excess combustion gas passes through the nucleation zone and is cooled to 500-900degreesC or is cooled using inert gas, and an aerosol containing doping agent(s) is fed in an amount that corresponds to the desired amount of doping agent in the zinc oxide powder. In the oxidation zone, the mixture from the nucleation zone is oxidized with air and/or oxygen. In the quenching zone, the oxidation mixture is cooled to less than 400degreesC by addition of cooling gas.
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公开(公告)号：NO20011360A
公开(公告)日：2001-09-19
申请号：NO20011360
申请日：2001-03-16
Applicant: DEGUSSA
Inventor： MORITZ TASSILO , REETZ TEJA , DELLER KLAUS , GUTSCH ANDREAS , KRAEMER MICHAEL , MICHAEL GUENTHER
IPC: B01J2/02 , B01J20/06 , B01J20/10 , C01B33/12 , C01G23/04 , C04B35/626 , C09B67/00 , C09B67/06 , C09C1/28 , C09C1/36 , C09C3/00
CPC classification number: C09B67/0095 , B01J2/02 , C04B35/626 , C09B67/0003
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公开(公告)号：DE19961933A1
公开(公告)日：2001-07-26
申请号：DE19961933
申请日：1999-12-22
Applicant: DEGUSSA
Inventor： MICHAEL GUENTHER , KASACK VOLKER , NOWACK RUEDIGER
Abstract: Hydorphobic, pyrogenically produced silica having a tamped density of 55 - 200 g/l is produced by hydrophobising pyrogenically produced silica and then compacting it.
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公开(公告)号：GB2285515B
公开(公告)日：1997-04-16
申请号：GB9500013
申请日：1995-01-03
Applicant: DEGUSSA
Inventor： HENNIG THOMAS , MICHAEL GUENTHER , STADTMULLER GUENTER
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