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1. WO2006094869 - PROCESS FOR THE PRODUCTION OF MONOLITHS BY MEANS OF THE SOL-GEL PROCESS

Publication Number WO/2006/094869
Publication Date 14.09.2006
International Application No. PCT/EP2006/050759
International Filing Date 08.02.2006
IPC
C03B 19/12 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
19Other methods of shaping glass
12by liquid-phase reaction processes
C03B 20/00 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
20Processes specially adapted for the production of quartz or fused silica articles
C03C 1/00 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
1Ingredients generally applicable to manufacture of glasses, glazes or vitreous enamels
C03C 3/06 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3Glass compositions
04containing silica
06with more than 90% silica by weight, e.g. quartz
CPC
C03B 19/12
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
19Other methods of shaping glass
12by liquid-phase reaction processes
C03B 2201/03
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
2201Type of glass produced
02Pure silica glass, e.g. pure fused quartz
03Impurity concentration specified
C03C 1/006
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
1Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
006to produce glass through wet route
C03C 2201/02
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
2201Glass compositions
02Pure silica glass, e.g. pure fused quartz
C03C 2203/22
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
2203Production processes
20Wet processes, e.g. sol-gel process
22using colloidal silica sols
C03C 2203/26
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
2203Production processes
20Wet processes, e.g. sol-gel process
26using alkoxides
Applicants
  • DEGUSSA NOVARA TECHNOLOGY S.P.A. [IT]/[IT] (AllExceptUS)
  • COSTA, Fulvio [IT]/[IT] (UsOnly)
  • BOARA, Giulio [IT]/[IT] (UsOnly)
  • RÜCKEMANN, Andreas [DE]/[IT] (UsOnly)
Inventors
  • COSTA, Fulvio
  • BOARA, Giulio
  • RÜCKEMANN, Andreas
Common Representative
  • DEGUSSA NOVARA TECHNOLOGY S.P.A.
Priority Data
05005096.209.03.2005EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR THE PRODUCTION OF MONOLITHS BY MEANS OF THE SOL-GEL PROCESS
(FR) PROCEDE DE FABRICATION DE MONOLITHES AU MOYEN D’UN PROCEDE SOL-GEL
Abstract
(EN)
Process for the production of monoliths by means of the sol-gel process, comprising the following steps: a. hydrolysis of an alkoxide in aqueous solution to form a hydrolysate and optionally evaporation to optimum concentration of the same, b. addition of an oxide prepared by the pyrogenic route, c. mixing of the hydrolysate of the alkoxide with the oxide prepared by the pyrogenic route to form a colloidal sol, d. optional removal of coarse contents from the colloidal sol, e. gelling of the colloidal sol in a mould, f. optional replacement of the water contained in the resulting aerogel by an organic solvent, g. drying of the aerogel, h. heat treatment of the dried aerogel, the coarse content being removed from the colloidal sol.
(FR)
Procédé de fabrication de monolithes au moyen d’un procédé sol-gel, comprenant les étapes suivantes: a. hydrolyse d’un alkoxyde en solution aqueuse pour obtenir un hydrolysat et éventuellement évaporation jusqu'à une concentration optimale, b. ajout d’un oxyde préparé par voie pyrogénique, c. mélange de l’hydrolysat de l’alkoxyde avec l’oxyde préparé par voie pyrogénique pour former un sol colloïdal, d. retrait éventuel des impuretés du sol colloïdal, e. gélification du sol colloïdal dans un moule, f. remplacement éventuel de l’eau contenue dans l’aérogel obtenu par un solvant organique, g. séchage de l’aérogel, h. traitement thermique de l’aérogel séché, les impuretés étant retirées du sol colloïdal.
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