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1. (WO1991007349) PROCESS FOR FORMING HIGHLY UNIFORM SILICA SPHERES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/007349 International Application No.: PCT/US1990/003605
Publication Date: 30.05.1991 International Filing Date: 26.06.1990
Chapter 2 Demand Filed: 27.05.1991
IPC:
C01B 33/18 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
33
Silicon; Compounds thereof
113
Silicon oxides; Hydrates thereof
12
Silica; Hydrates thereof, e.g. lepidoic silicic acid
18
Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
Applicants:
ALLIED-SIGNAL INC. [US/US]; Law Department (C.A. McNally) P.O. Box 2245R Morristown, NJ 07962-2245, US
Inventors:
BARDER, Timothy, Joseph; US
DUBOIS, Philip, David; US
Agent:
ROONEY, Gerard, P.; Allied-Signal Inc. Law Dept. (C.A. McNally) 101 Columbia Road P.O. Box 2245 Morristown, NJ 07962-2245, US
WELLS, Harold, N.; Allied-Signal Inc. Law Department (C.A. McNally) P.O. Box 2245 Morristown, NJ 07962, US
Priority Data:
440,54122.11.1989US
Title (EN) PROCESS FOR FORMING HIGHLY UNIFORM SILICA SPHERES
(FR) PROCEDE DE FORMATION DE SPHERES EN SILICE HAUTEMENT UNIFORMES
Abstract:
(EN) A process for producing highly uniform microspheres of silica having an average diameter of 0.1-10 $g(m)m from the hydrolysis of a silica precursor, such as tetraalkoxysilanes, which is characterized by employing precursor solutions and feed rates which initially yield a two-phase reaction mixture
(FR) Procédé de production de microsphères hautement uniformes en silice, ayant un diamètre moyen compris entre 0,1 et 10 $g(m), à partir de l'hydrolyse d'un précurseur de silice, tel que des tétraalcoxysilanes, caractérisé par l'emploi de solutions précurseurs et de rythmes d'alimentation produisant initialement un mélange de réaction à deux phases.
Designated States: AU, BB, BG, BR, CA, FI, HU, JP, KP, KR, LK, MC, MG, MW, NO, RO, SD, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0502129AU1990059495