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1. WO2009050013 - PROCESS FOR PREPARING A DISPERSION COMPRISING TITANIUM-SILICON MIXED OXIDE

Publication Number WO/2009/050013
Publication Date 23.04.2009
International Application No. PCT/EP2008/062833
International Filing Date 25.09.2008
IPC
C01B 33/141 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
33Silicon; Compounds thereof
113Silicon oxides; Hydrates thereof
12Silica; Hydrates thereof, e.g. lepidoic silicic acid
14Colloidal silica, e.g. dispersions, gels, sols
141Preparation of hydrosols or aqueous dispersions
C01B 37/00 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
37Compounds having molecular sieve properties but not having base-exchange properties
CPC
B82Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
C01B 33/141
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
33Silicon; Compounds thereof
113Silicon oxides; Hydrates thereof
12Silica; Hydrates thereof, e.g. lepidoic silicic acid
14Colloidal silica, e.g. dispersions, gels, sols
141Preparation of hydrosols or aqueous dispersions
C01B 33/1415
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
33Silicon; Compounds thereof
113Silicon oxides; Hydrates thereof
12Silica; Hydrates thereof, e.g. lepidoic silicic acid
14Colloidal silica, e.g. dispersions, gels, sols
141Preparation of hydrosols or aqueous dispersions
1415by suspending finely divided silica in water
C01B 33/1417
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
33Silicon; Compounds thereof
113Silicon oxides; Hydrates thereof
12Silica; Hydrates thereof, e.g. lepidoic silicic acid
14Colloidal silica, e.g. dispersions, gels, sols
141Preparation of hydrosols or aqueous dispersions
1415by suspending finely divided silica in water
1417an aqueous dispersion being obtained
C01B 37/005
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
37Compounds having molecular sieve properties but not having base-exchange properties
005Silicates, i.e. so-called metallosilicalites or metallozeosilites
C01G 23/04
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
23Compounds of titanium
04Oxides; Hydroxides
Applicants
  • EVONIK DEGUSSA GMBH [DE]/[DE] (AllExceptUS)
  • LORTZ, Wolfgang [DE]/[DE] (UsOnly)
  • SCHUMACHER, Kai [DE]/[DE] (UsOnly)
  • PIETSCH, Jörg [DE]/[DE] (UsOnly)
Inventors
  • LORTZ, Wolfgang
  • SCHUMACHER, Kai
  • PIETSCH, Jörg
Common Representative
  • EVONIK DEGUSSA GMBH
Priority Data
102007049742.516.10.2007DE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR PREPARING A DISPERSION COMPRISING TITANIUM-SILICON MIXED OXIDE
(FR) PROCÉDÉ DE PRÉPARATION D'UNE DISPERSION COMPRENANT DE L'OXYDE MIXTE DE SILICIUM ET DE TITANE
Abstract
(EN)
Process for preparing an aqueous dispersion which has a pH of 9 to 14 and comprises particles of a pyrogenic titanium- silicon mixed oxide powder having a proportion of silicon dioxide of 75 to 99.99% by weight and of titanium dioxide of 0.01 to 25% by weight, whose mean aggregate diameter in the dispersion is not more than 200 nm, and at least one basic, quaternary ammonium compound.
(FR)
La présente invention concerne un procédé de préparation d'une dispersion aqueuse qui a un pH de 9 à 14 et comprend des particules d'une poudre d'oxyde mixte de silicium et de titane pyrogène ayant une proportion de dioxyde de silicium de 75 à 99,99 % en poids et de dioxyde de titane de 0,01 à 25 % en poids, dont le diamètre moyen des agrégats dans la dispersion est inférieur à 200 nm, et au moins un composé ammonium quaternaire basique.
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