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公开(公告)号：JPH1087317A
公开(公告)日：1998-04-07
申请号：JP10693797
申请日：1997-04-24
Applicant: DEGUSSA
Inventor： HARTMANN WERNER DR , MEYER JUERGEN DR , JACOBSEN HAUKE DR , HENNIG THOMAS DR , KARBE HENNIG , SCHACHTELY UWE
IPC: B01J2/30 , C01B33/18 , C08K3/36 , C08K9/06 , C09C1/30 , C09C1/68 , C09C3/12 , C09D7/00 , C09D7/12 , C09D7/45 , C09G1/00 , C09K3/00 , C09K3/10 , C09K3/14 , C09D7/02
Abstract: PROBLEM TO BE SOLVED: To product a silicic acid modified to silane and reducing viscosity. SOLUTION: Water or a dilute acid is first sprayed on silicic acid in a proper mixing vessel if necessary and then a surface modifying reactive agent or a mixture of several kinds of surface modifying reactive agents is sprayed. They are stirred for 15-30min, heat-treated at 100-400 deg.C for 1-6r, broken, compressed and pulverized to produce the objective silicic acid modified to silane and having such physical and chemical characteristics as 80-400m /g specific surface area, 7-40nm primary particle size, 50-300g/l tap density, pH3-10, 0.1-15% carbon content and
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公开(公告)号：JPH10130004A
公开(公告)日：1998-05-19
申请号：JP10852997
申请日：1997-04-25
Applicant: DEGUSSA
Inventor： MANGOLD HELMUT DR , HARTMANN WERNER DR , AKAM RICHARD
IPC: B24D3/00 , C01B13/18 , C01F17/00 , C01G23/04 , C01G23/07 , C01G25/02 , C08K3/22 , C09K3/14 , H01L21/304
Abstract: PROBLEM TO BE SOLVED: To provide a fine mixture of cerium oxide with at least one of a metal oxide and a metalloid oxide. SOLUTION: At least one of a metal oxide and a metalloid oxide each having 30-400m /g specific surface area produced by thermal decomposition is vigorously mixed with a cerium compd. convertible into cerium oxide by decomposition at an elevated temp. and the cerium compd. is converted into cerium oxide by thermal decomposition to produce the objective fine mixture of 0.001-95wt.% cerium oxide with at least one of the metal oxide and metalloid oxide produced by thermal decomposition.
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公开(公告)号：JPH10218608A
公开(公告)日：1998-08-18
申请号：JP32969997
申请日：1997-11-14
Applicant: DEGUSSA
Inventor： JOACOBSEN HAUKE DR , HARTMANN WERNER DR , KATUSIC STIPAN , SCHULZ ANDREAS DR , GIESECKE NORBERT , BRANDES RALPH DR , SPERLICH JOERG DR
Abstract: PROBLEM TO BE SOLVED: To obtain a spherical pigment based on an oxide or silicate salt carrier material having a finely dispersed metal, and to provide a method for producing the same. SOLUTION: This pigment is obtained by a spray-pyrolyzing method comprising pyrolyzing an aerosol comprising the solution of at least one kind of a noble metal compound and an oxide or silicate salt-forming precursor at a temperature exceeding the decomposition temperature of the noble metal compound and a temperature for forming at least a carrier material from the oxide or silicate salt-forming precursor and subsequently separating the produced pigment from the pyrolyzed gas. The obtained pigment consists mainly of the spherical particles based on the oxide or silicate salt carrier material and the noble metal finely dispersed on or in the particles and having an average particle diameter of
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公开(公告)号：EP0803471A3
公开(公告)日：1998-09-16
申请号：EP97104499
申请日：1997-03-17
Applicant: DEGUSSA
Inventor： MANGOLD HELMUT DR , HARTMANN WERNER DR , AKAM RICHARD
CPC classification number: C09K3/14 , C01B13/185 , C01P2006/10 , C01P2006/12 , C01P2006/82 , C08K3/22 , C09K3/1454
Abstract: Eine feinteilige Ceroxid-Metall/Metalloidoxid-Mischung, enthaltend pyrogen hergestelltes Metall/Metalloidoxid und 0,001 bis 95 Gew.-% Ceroxid, mit einer spezifischen Oberfläche der erhaltenen Mischung zwischen 10 und 400 m
2 /g wird hergestellt, indem man pyrogen hergestelltes Metall/Metalloidoxid mit einer spezifischen Oberfläche zwischen 30 und 400 m
2 /g mit einer bei erhöhter Temperatur zum Oxid zersetzbaren Cerverbindung mischt und die Cerverbindung thermisch zum Oxid zersetzt.
Die Ceroxid-Metall/Metalloidoxid-Mischung kann als Poliermittel oder Füllstoff eingesetzt werden.-
公开(公告)号：ES2154748T3
公开(公告)日：2001-04-16
申请号：ES96101193
申请日：1996-01-29
Applicant: DEGUSSA
Inventor： DELLER KLAUS DR , KRAUSE HELMFRIED , MEYER JURGEN DR , KERNER DIETER DR , HARTMANN WERNER DR , LANSINK-ROTGERINK HANS DR
IPC: B01J2/10 , B01J21/08 , B01J35/10 , C01B33/12 , C01B33/18 , C08F4/00 , C08F4/02 , C08F4/60 , C08F4/64 , C08F10/00 , C08F10/02 , C09C1/30
Abstract: Granulates (I) based on pyrogenic silica are claimed, with the following physical properties: - mean particle dia.: 10-120 microns - BET surface: 40-400 m /g - pore vol.: 0.5-2.5 ml/g - pore size distribution: less than 5% of total pore vol. with a pore dia. less than 5 nm, the rest meso- and macro-pores -pH: 3.6-8.5 - tamped density: 220-700 g/l. Also claimed is the prodn. of (I) by dispersing pyrogenic silica in water and spray drying the dispersion. The granules obtd. are then (a) heated for 1-8 hrs. at 150-1100 deg.C; or (b) silanised; or (c) heat-treated as in (a) and then silanised.
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Patent Agency Ranking
公开(公告)号：DE59308133D1
公开(公告)日：1998-03-19
申请号：DE59308133
申请日：1993-06-03
Applicant: DEGUSSA
Inventor： MANGOLD HELMUT DR , HARTMANN WERNER DR , KLEINSCHMIT PETER DR , KERNER DIETER DR , RUDOLPH THOMAS DR
IPC: C01B13/22 , C01B33/26 , C01F7/30 , C04B35/18 , C04B35/185 , C04B35/626
Abstract: Silicon-aluminum mixed oxide powder which is flamehydrolytically produced and has a composition of 65 to 85% by weight Al2O3, remainder SiO2 and an amorphous structure, in which each primary particle contains components of SiO2 and of Al2O3, the primary particles are between 7 and 80 nm, preferably 10 and 40 nm in size and the specific surface of the powder is between 20 and 200 m2/g. The powder is used for the production of mullite and sintered compacts manufactured from it.
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公开(公告)号：DE19616781A1
公开(公告)日：1997-11-06
申请号：DE19616781
申请日：1996-04-26
Applicant: DEGUSSA
Inventor： HARTMANN WERNER DR , MEYER JUERGEN DR , JACOBSEN HAUKE DR , HENNIG THOMAS DR , KARBE HENNIG , SCHACHTELY UWE
IPC: B01J2/30 , C01B33/18 , C08K3/36 , C08K9/06 , C09C1/30 , C09C1/68 , C09C3/12 , C09D7/00 , C09D7/12 , C09D7/45 , C09G1/00 , C09K3/00 , C09K3/10 , C09K3/14 , C09D5/28 , H01B3/02 , C09G1/02
Abstract: Silica has a specific surface area of 80-400 m /g, primary particle size of 7-40 nm, tamped density of 50-300 g/l, pH or 3-10, carbon content of 0.1-15% and dibutyl phthalate (DBP) value
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公开(公告)号：DE19616780A1
公开(公告)日：1997-11-06
申请号：DE19616780
申请日：1996-04-26
Applicant: DEGUSSA
Inventor： MANGOLD HELMUT DR , HARTMANN WERNER DR , AKAM RICHARD
IPC: B24D3/00 , C01B13/18 , C01F17/00 , C01G23/04 , C01G23/07 , C01G25/02 , C08K3/22 , C09K3/14 , H01L21/304 , C01B33/113 , C01B35/00 , C01G23/00 , C01G25/00 , C04B35/622 , C09G1/02
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公开(公告)号：DE19545455C1
公开(公告)日：1997-01-23
申请号：DE19545455
申请日：1995-12-06
Applicant: DEGUSSA
Inventor： JACOBSEN HAUKE DR , HARTMANN WERNER DR , KATUSIC STIPAN , STARZ KARL-ANTON DR
Abstract: A method of producing precious metal (esp. Pd, Ag or Pd-Ag alloy) powders involves feeding an aerosol of a precious metal cpd. soln. into a flame reactor at above the decomposition temp. of the precious metal cpd. or oxide and depositing the resulting precious metal powder. The novelty is that, prior to feeding into the reactor, the aerosol is freed from (most of) the solvent at above the solvent boiling point, pref. by heat treatment at 10-100 deg C above the solvent boiling point for 2-20 secs. immediately before feeding into the reactor.
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公开(公告)号：DE59301962D1
公开(公告)日：1996-04-25
申请号：DE59301962
申请日：1993-12-16
Applicant: DEGUSSA
Inventor： HARTMANN WERNER DR , KERNER DIETER DR
IPC: A61K8/19 , A61K8/29 , A61Q17/04 , B01J23/745 , B01J35/02 , C01B13/22 , C01G23/04 , C01G23/07 , C01G49/00 , C09C1/00 , C09C1/36 , C09D5/32 , C09D7/12 , C09D17/00 , C09K3/00 , C09K15/02
Abstract: Titanium dioxide powder containing iron oxide is prepared by a pyrogenic, in particular a flame-hydrolytic, route from FeCl3 and TiCl4. A further possibility is the coating of pyrogenic titanium dioxide, in particular prepared by flame hydrolysis, with iron oxide in aqueous dispersion. The titanium dioxide containing iron oxide is used as a UV absorber in sun protection compositions.
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