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1. (WO1997012837) SYNTHETIC SILICA GLASS POWDER, PROCESS FOR THE PRODUCTION THEREOF, AND PROCESS FOR THE PRODUCTION OF MOLDINGS OF SILICA GLASS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1997/012837    International Application No.:    PCT/JP1996/002916
Publication Date: 10.04.1997 International Filing Date: 07.10.1996
Chapter 2 Demand Filed:    17.04.1997    
IPC:
C01B 33/16 (2006.01), C03B 19/10 (2006.01)
Applicants: MITSUBISHI CHEMICAL CORPORATION [JP/JP]; 5-2, Marunouchi 2-chome, Chiyoda-ku, Tokyo 100 (JP) (For All Designated States Except US).
KATSURO, Yoshio [JP/JP]; (JP) (For US Only).
KATSUKI, Takanobu [JP/JP]; (JP) (For US Only).
OISHI, Shoji [JP/JP]; (JP) (For US Only)
Inventors: KATSURO, Yoshio; (JP).
KATSUKI, Takanobu; (JP).
OISHI, Shoji; (JP)
Agent: HASEGAWA, Koji; Mitsubishi Chemical Corporation, 5-2, Marunouchi 2-chome, Chiyoda-ku, Tokyo 100 (JP)
Priority Data:
7/258936 05.10.1995 JP
7/259994 06.10.1995 JP
7/259996 06.10.1995 JP
7/259997 06.10.1995 JP
7/280728 27.10.1995 JP
7/280729 27.10.1995 JP
Title (EN) SYNTHETIC SILICA GLASS POWDER, PROCESS FOR THE PRODUCTION THEREOF, AND PROCESS FOR THE PRODUCTION OF MOLDINGS OF SILICA GLASS
(FR) POUDRE DE VERRE DE SILICE SYNTHETIQUE, SON PROCEDE DE PRODUCTION ET PROCEDE DE FABRICATION DE MOULAGES EN VERRE DE SILICE
Abstract: front page image
(EN)A process for the production of synthetic silica glass powder by firing a powder of silica gel obtained by the hydrolysis of an alkoxysilane, characterized by using a reactor fitted with a mechanical agitator in its inside in the hydrolysis/gelation step and beginning steady agitation of the contents of the reactor after the completion of charging of at least the alkoxysilane and water into the reactor.
(FR)Ce procédé, qui permet de produire une poudre de verre de silice synthétique par cuisson d'une poudre de gel de silice obtenue par hydrolyse d'un alkoxysilane, se caractérise par l'utilisation d'un réacteur renfermant un agitateur mécanique lors de l'étape d'hydrolyse/gélification, et par le démarrage d'une agitation constante du contenu de ce réacteur une fois chargés au moins l'alkoxysilane et l'eau dans ledit réacteur.
Designated States: KR, US.
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)