Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1975-02-10
1976-11-23
Garvin, Patrick P.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252439, 252448, 252455R, B01J 3700
Patent
active
039935906
ABSTRACT:
A process for preparing silico-alumina beads containing silica and at least an equal amount of alumina comprising dispersing as droplets into a hot and practically water-immiscible fluid, an aqueous mixture which comprises alumina hydrogel, alumina hydrosol as alumina precursors, an alkali silicate and silica gel as silica precursors, the amount of alkali silicate, based on SiO.sub.2, not exceeding 20% of the total weight of SiO.sub.2 and Al.sub.2 O.sub.3, and the total amount of alkali silica and silica gel, based on SiO.sub.2, not exceeding 50% of the total weight of SiO.sub.2 and Al.sub.2 O.sub.3, and at least a water-soluble monomer whose uncross-linked polymer is water-soluble or forms a gel, and maintaining the droplets of the aqueous mixture in the hot fluid until substantial polymerization of said monomer occurs.
REFERENCES:
patent: 2526907 (1950-10-01), Schmerling
patent: 2966466 (1960-12-01), Schwartz
patent: 3472791 (1969-10-01), Vesely
patent: 3746657 (1973-07-01), Miller et al.
patent: 3776987 (1973-12-01), Grimes et al.
Andre Jacques Maurice Jules Ghislain
Cahen Raymond Marc
Debus Henri Robert
Lammers Rene Odon
Van Thillo Hugo Johannes
Garvin Patrick P.
Labofina S.A.
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