公开(公告)号：MY142439A

公开(公告)日：2010-11-30

申请号：MYPI20063879

申请日：2006-08-10

Applicant: EVONIK DEGUSSA GMBH

Inventor： KATUSIC STIPAN ,  HEBERER STEFAN ,  STAAB EDWIN ,  KROELL MICHAEL DR ,  KRAEMER MICHAEL ,  MICHAEL GUENTHER DR

Abstract: 2 0 CERIUM OXIDE POWDER AND CERIUM OXIDE DISPERSION ABSTRACT CERIUM OXIDE POWDER WHICH HAS CARBONATE GROUPS AND 5 COMPRISES CRYSTALLINE PRIMARY PARTICLES WHICH CONTAIN CERIUM OXIDE AND CARBONATE GROUPS ON THEIR SURFACE AND IN A LAYER CLOSE TO THE SURFACE, WHEREIN THE POWDER HAS A BET SURFACE AREA OF FROM 25 TO 150 M2 /G , 10 THE PRIMARY PARTICLES HAVE A MEAN DIAMETER OF FROM 5 TO 50 NM, THE LAYER CLOSE TO THE SURFACE OF THE PRIMARY PARTICLES HAS A DEPTH OF ABOUT 5 NM, THE CARBONATE CONCENTRATION IN THE LAYER CLOSE TO THE 15 SURFACE DECREASES INWARDS FROM THE SURFACE ON WHICH THE CARBONATE CONCENTRATION IS HIGHEST, - THE CARBON CONTENT DUE TO THE CARBONATE GROUPS ON THE SURFACE IS FROM 5 TO 50BY AREA AND THAT AT A DEPTH OF ABOUT 5 NM IN THE LAYER CLOSE TO THE SURFACE IS 20 FROM 0 TO 30BY AREA, - THE CONTENT OF CERIUM OXIDE, CALCULATED AS CEO2 AND BASED ON THE POWDER, IS AT LEAST 99.5BY WEIGHT AND THE CONTENT OF CARBON, ENCOMPASSING ORGANIC AND INORGANIC CARBON, IS FROM 0.01 TO 0.3BV WEIGHT, 25 BASED ON THE POWDER. DISPERSION CONTAINING THIS POWDER. I OO

公开(公告)号：ES2290435T3

公开(公告)日：2008-02-16

申请号：ES03708205

申请日：2003-03-10

Applicant: EVONIK DEGUSSA GMBH

Inventor： KATUSIC STIPAN ,  MICHAEL GUNTHER ,  KRESS PETER ,  VARGA GEOFFREY J ,  STAAB EDWIN ,  WEBER WINFRIED

IPC: B82B1/00 ,  C01G9/03 ,  A61K8/27 ,  A61Q17/04

Abstract: Polvo de óxido de cinc nanométrico, pirogénicamente producido que tiene un área de superficie BET 10 a 200 m2/g, caracterizado porque está en forma de agregados de partículas primarias anisotropicas y porque los agregados exhiben un diámetro promedio de 50 a 300 nm y donde los agregados comprenden una mezcla de partículas primarias nodulares y de partículas primarias aciculares, donde el cociente de las partículas primarias nodular a las aciculares está entre 99:1 y 1:99.

公开(公告)号：DE60315437T2

公开(公告)日：2008-05-08

申请号：DE60315437

申请日：2003-03-10

Applicant: EVONIK DEGUSSA GMBH

Inventor： KATUSIC STIPAN ,  MICHAEL GUENTHER ,  KRESS PETER ,  VARGA GEOFFREY J ,  STAAB EDWIN ,  WEBER WINFRIED

IPC: B82B1/00 ,  C01G9/03 ,  A61K8/27 ,  A61Q17/04

Abstract: Nanoscale, pyrogenically produced zinc oxide having a BET surface area of 10 to 200 m2/g, which is in the form of aggregates of anisotropic primary particles and whereby the aggregates display an average diameter of 50 to 300 nm. It is obtained from zinc powder, which is converted to zinc oxide powder in the four successive reaction zones, evaporation zone, nucleation zone, oxidation zone and quench zone. It can be used in sunscreen formulations.

公开(公告)号：AT538071T

公开(公告)日：2012-01-15

申请号：AT04012835

申请日：2004-05-29

Applicant: EVONIK DEGUSSA GMBH

Inventor： KATUSIC STIPAN ,  HEBERER STEFAN ,  KRAEMER MICHAEL ,  KRESS PETER ,  KROELL MICHAEL ,  STAAB EDWIN

IPC: C01F17/00 ,  B01J23/10 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  C09K3/14

Abstract: Polycrystalline cerium oxide powder (I) in the form of aggregates of primary particles has a specific surface area of 70-150 m 2>/g, average primary particle diameter of 5-20 nm and average projected aggregate diameter (equivalent circle diameter, ECD) of 20-100 nm. Independent claims are included for: (1) the preparation of (I); (2) dispersions containing (I); and (3) the production of the dispersions.

公开(公告)号：DE102006027335A1

公开(公告)日：2008-01-10

申请号：DE102006027335

申请日：2006-06-13

Applicant: EVONIK DEGUSSA GMBH

Inventor： KATUSIC STIPAN ,  ZIMMERMANN GUIDO ,  KRAEMER MICHAEL ,  MIESS HORST ,  STAAB EDWIN

IPC: C01G1/02 ,  C01G99/00

Abstract: Process for preparing mixed metal oxide powders Abstract Process for preparing a mixed metal oxide powder, in which oxidizable starting materials are evaporated in an evaporation zone of a reactor and oxidized in the vaporous state in an oxidation zone of this reactor, the reaction mixture is cooled after the reaction and the pulverulent solids are removed from gaseous substances, wherein at least one pulverulent metal, together with one or more combustion gases, is fed to the evaporation zone, the metal is evaporated completely in the evaporation zone under nonoxidizing conditions, an oxygen-containing gas and at least one metal compound are fed, separately or together, in the oxidation zone to the mixture flowing out of the evaporation zone, the oxygen content of the oxygen-containing gas being at least sufficient to oxidize the metal, the metal compound and the combustion gas completely.

公开(公告)号：DK1490301T3

公开(公告)日：2007-11-12

申请号：DK03708205

申请日：2003-03-10

Applicant: EVONIK DEGUSSA GMBH

Inventor： KATUSIC STIPAN ,  MICHAEL GUENTHER ,  KRESS PETER ,  VARGA GEOFFREY J ,  STAAB EDWIN ,  WEBER WINFRIED

IPC: B82B1/00 ,  C01G9/03 ,  A61K8/27 ,  A61Q17/04

Abstract: Nanoscale, pyrogenically produced zinc oxide having a BET surface area of 10 to 200 m2/g, which is in the form of aggregates of anisotropic primary particles and whereby the aggregates display an average diameter of 50 to 300 nm. It is obtained from zinc powder, which is converted to zinc oxide powder in the four successive reaction zones, evaporation zone, nucleation zone, oxidation zone and quench zone. It can be used in sunscreen formulations.