公开(公告)号：DE102005032427A1

公开(公告)日：2007-01-18

申请号：DE102005032427

申请日：2005-07-12

Applicant: DEGUSSA

Inventor： LORTZ WOLFGANG ,  BATZ-SOHN CHRISTOPH ,  PERLET GABRIELE ,  LACH HEINZ ,  WILL WERNER

IPC: C01F7/02 ,  B01J13/04 ,  C03C17/25 ,  C04B41/85 ,  C09C1/40 ,  C09C3/04 ,  C09C3/08 ,  C09D1/00 ,  C09D5/02 ,  C09K23/00

Abstract: Aluminum oxide dispersion, which is stable in a pH range 5 from 5 to 9 and has an aluminum oxide content of at least 40 wt. %, obtainable by dispersing pyrogenically produced aluminum oxide particles in an aqueous phase, wherein one or several at least dibasic hydroxycarboxylic acids present dissolved in the dispersion and at least one salt of a 10 dialkali metal hydrogen phosphate and/or alkali metal dihydrogen phosphate are added to the aqueous phase each mutually independently in a quantity of 0.3-3×10-6 mol/m2 of aluminum oxide specific surface area.

公开(公告)号：DE102004031785A1

公开(公告)日：2006-01-26

申请号：DE102004031785

申请日：2004-07-01

Applicant: DEGUSSA

Inventor： LORTZ WOLFGANG ,  BATZ-SOHN CHRISTOPH ,  MANGOLD HELMUT ,  PERLET GABRIELE ,  WILL WERNER ,  REITZ SASCHA

IPC: C01B33/12 ,  C09K21/02

公开(公告)号：DE102004021532A1

公开(公告)日：2005-12-08

申请号：DE102004021532

申请日：2004-05-03

Applicant: DEGUSSA

Inventor： LORTZ WOLFGANG ,  SCHEFFLER JOCHEN ,  PERLET GABRIELE

IPC: A01N25/04 ,  A01N59/00 ,  A61K33/00 ,  C01B33/141

Abstract: Dispersion containing, in addition to water, 0.5 to 20 wt. % of hydrophobic silica, 0.01 to 10 wt. % of a gelling or viscosity-increasing additive, 0.1 to 1 wt. % of a preservative and 0 to 1 wt. % of a surface-active substance. It is prepared by a procedure in which the individual components are dispersed successively or together into the water and in this procedure the individual components are deaerated before and/or during the addition or the dispersion is deaerated during the individual dispersing steps. The dispersion can be employed as an insecticide.

公开(公告)号：AT299838T

公开(公告)日：2005-08-15

申请号：AT01130752

申请日：2001-12-21

Applicant: DEGUSSA

Inventor： MANGOLD HELMUT DR ,  LORTZ WOLFGANG DR ,  BATZ-SOHN CHRISTOPH DR ,  PERLET GABRIELE ,  WILL WERNER

IPC: A61K8/18 ,  A61K8/25 ,  A61Q1/02 ,  C01B33/141 ,  C01B33/18 ,  C03C17/25 ,  C09C1/68 ,  C09G1/02 ,  C09K3/14 ,  D21H19/40 ,  H01L21/304 ,  H01L21/306

Abstract: A pyrogenic process is used to prepare alkali-doped silica particles. Particles produced by this process exhibit homogeneous doping, reduced agglomeration, greater stability and higher removal rates. Aqueous dispersions containing alkali-doped pyrogenic silica with average particle size less than 100 nm are used for polishing surfaces (CMP).

公开(公告)号：CA2496467A1

公开(公告)日：2004-03-04

申请号：CA2496467

申请日：2003-07-29

Applicant: DEGUSSA

Inventor： BATZ-SOHN CHRISTOPH ,  PERLET GABRIELE ,  LORTZ WOLFGANG ,  WILL WERNER ,  SCHNEIDER GERRIT ,  NEUGEBAUER PETER

IPC: C01B33/148 ,  C09C1/30 ,  C01B33/149

Abstract: Aqueous dispersion containing silicon dioxide powder, which is stable in a p H range of 2 to 6, which contains a cation-providing compound that is at least partially soluble in this pH range and the zeta potential of which is less than or equal to zero. It is produced by bringing silicon dioxide powder and at least one cation-providing compound into contact whilst moving in an aqueous medium. The dispersion can be used for chemical-mechanical polishing of metal surfaces.

公开(公告)号：DE10229761A1

公开(公告)日：2004-02-05

申请号：DE10229761

申请日：2002-07-03

Applicant: DEGUSSA

Inventor： LORTZ WOLFGANG ,  BATZ-SOHN CHRISTOPH ,  HASENZAHL STEFAN ,  PERLET GABRIELE ,  WILL WERNER

IPC: A61K8/19 ,  A61K8/00 ,  A61K8/04 ,  A61K8/24 ,  A61K8/25 ,  A61K8/26 ,  A61K8/29 ,  A61Q17/04 ,  A61Q19/00 ,  C01G1/02 ,  C01G9/02 ,  C01G23/04 ,  C01G23/047 ,  C01G49/02 ,  C09C1/00 ,  C09C1/36 ,  C09D17/00 ,  A61K7/00

Abstract: Aqueous dispersion containing pyrogenically produced oxide particles of titanium, zinc, iron or cerium having an average particle size, expressed as a median value, in the dispersion of less than 200 nm, the particle sizes of the oxide particles are not distributed symmetrically in the dispersion, the dispersion contains as dispersing agent at least one (poly)phosphate corresponding to the general formula I and has a pH of 4.5 to 7.5. It is prepared by dispersing a stream of a preliminary dispersion by means of a high-energy mill. It can be used in sunscreen formulations.

公开(公告)号：AU2003238196A1

公开(公告)日：2004-01-23

申请号：AU2003238196

申请日：2003-06-03

Applicant: DEGUSSA

Inventor： PERLET GABRIELE ,  WILL WERNER ,  LORTZ WOLFGANG ,  BATZ-SOHN CHRISTOPH ,  HASENZAHL STEFFEN

IPC: A61K8/19 ,  A61K8/00 ,  A61K8/04 ,  A61K8/24 ,  A61K8/25 ,  A61K8/26 ,  A61K8/29 ,  A61Q17/04 ,  A61Q19/00 ,  C01G1/02 ,  C01G9/02 ,  C01G23/04 ,  C01G23/047 ,  C01G49/02 ,  C09C1/00 ,  C09C1/36 ,  C09D17/00

Abstract: Aqueous dispersion containing pyrogenically produced oxide particles of titanium, zinc, iron or cerium having an average particle size, expressed as a median value, in the dispersion of less than 200 nm, the particle sizes of the oxide particles are not distributed symmetrically in the dispersion, the dispersion contains as dispersing agent at least one (poly)phosphate corresponding to the general formula I and has a pH of 4.5 to 7.5. It is prepared by dispersing a stream of a preliminary dispersion by means of a high-energy mill. It can be used in sunscreen formulations.

公开(公告)号：AU2003232769A8

公开(公告)日：2003-12-22

申请号：AU2003232769

申请日：2003-05-14

Applicant: GOLDSCHMIDT AG TH ,  DEGUSSA

Inventor： BATZ-SOHN CHRISTOPH ,  HASENZAHL STEFFEN ,  PERLET GABRIELE ,  WILL WERNER ,  MATHIAK RALF ,  JENNI KLAUS ,  LORTZ WOLFGANG

IPC: A61K8/19 ,  C09K23/00 ,  A61K8/04 ,  A61K8/29 ,  A61K8/55 ,  A61K8/72 ,  A61K8/81 ,  A61Q1/00 ,  A61Q1/04 ,  A61Q5/10 ,  A61Q17/04 ,  C07F9/09 ,  C08K3/22 ,  C08L35/00 ,  C08L71/02 ,  C09C3/00 ,  C09C3/08 ,  C09C3/10 ,  C09K23/14 ,  C09K23/52

Abstract: Aqueous dispersion containing pyrogenic titanium, zinc, iron or cerium oxide particles with a median particle size below 250 nm and an asymmetric particle size distribution includes a dispersant selected from phosphate esters and copolymers of maleic compounds and optionally alkoxylated allyl alcohol. Aqueous dispersion containing pyrogenic titanium, zinc, iron or cerium oxide particles with a median particle size below 250 nm and an asymmetric particle size distribution includes a dispersant selected from phosphate esters of formula (I) and copolymers of formula (IIb) and/or (IIb); R = (un)saturated 6-22C alkyl or hydroxyalkyl; A = 2-4C alkylene; M = H, alkali metal or NH4; a = 0-30; b = 0-2; Ma = H, a mono or divalent metal cation, NH4 or organic ammonium; X = OMa, O(CpH2pO)qR1, NHR2 or NR22; R1 = H, 1-20C aliphatic hydrocarbyl, 5-8C cycloaliphatic hydrocarbyl or optionally substituted 6-14C aryl; p = 2-4; q = 0-100; R2 = R1 or CONH2; Y = O or NR2; A1 = 2-4C alkylene; m = 10-30; n = 0-50; k = 10-30; m+k = 20-60. An Independent claim is also included for production of the dispersion by dividing a stream of a predispersion comprising the oxide particles and dispersant and optionally additives into at least two substreams, passing the substreams through a high-energy mill under a pressure of at least 500 bar, expanding the substreams through a nozzle, contacting the substreams with one another in a gas- or liquid-filled reaction chamber, and grinding the product.

公开(公告)号：SG91941A1

公开(公告)日：2002-10-15

申请号：SG200106589

申请日：2001-10-25

Applicant: DEGUSSA

Inventor： LORTZ WOLFGANG ,  BATZ-SOHN CHRISTOPH ,  PERLET GABRIELE ,  WILL WERNER

IPC: B01F23/00 ,  C03B8/02 ,  C01B33/141 ,  C03B20/00 ,  C03C19/00 ,  C09C1/68 ,  C09G1/02 ,  C09K3/14 ,  C09K23/00 ,  D21H19/38 ,  H01L21/306 ,  H01L21/3105 ,  H01L21/321 ,  C01B33/14

Abstract: Aqueous dispersions comprises a cerium (Ce) oxide-doped pyrogenic silica, the Ce oxide having been obtained via an aerosol from a Ce salt solution or dispersion and the average particle diameter in the dispersion being below 100nm. An Independent claim is also included for the production of the dispersions by high-energy dispersion.

公开(公告)号：DE10054345A1

公开(公告)日：2002-05-08

申请号：DE10054345

申请日：2000-11-02

Applicant: DEGUSSA

Inventor： LORTZ WOLFGANG ,  PERLET GABRIELE ,  BATZ-SOHN CHRISTOPH ,  WILL WERNER

IPC: C03B8/02 ,  B01F23/00 ,  C01B33/141 ,  C03B20/00 ,  C03C19/00 ,  C09C1/68 ,  C09G1/02 ,  C09K3/14 ,  C09K23/00 ,  D21H19/38 ,  H01L21/306 ,  H01L21/3105 ,  H01L21/321 ,  B01F3/00 ,  H01L21/302 ,  D21H25/00 ,  B24D3/00 ,  B24B29/00 ,  B01F17/00

Abstract: Aqueous dispersions comprises a cerium (Ce) oxide-doped pyrogenic silica, the Ce oxide having been obtained via an aerosol from a Ce salt solution or dispersion and the average particle diameter in the dispersion being below 100nm. An Independent claim is also included for the production of the dispersions by high-energy dispersion.