Modified stannic oxide-zirconium oxide composite sol and process

Details Modified stannic oxide-zirconium oxide composite sol and process Modified stannic oxide-zirconium oxide composite sol and process

1993-07-07

1995-10-24

Wu, Shean

Compositions

Preservative agents

Anti-corrosion

252309, 1062864, B01J 1300

Patent

active

054607388

ABSTRACT:
A stable sol which comprises colloidal particles of modified stannic oxide-zirconium oxide composite having a particle size of from 4.5 to 60 nm, said colloidal particles consisting essentially of, as nuclei, colloidal particles of stannic oxide-zirconium oxide composite having a particle size of from 4 to 50 nm and having a structure in which colloidal particles of stannic oxide and colloidal particles of zirconium oxide are bonded to each other in a ratio, by weight of these oxides, of from 0.02 to 1.0 as ZrO.sub.2 /SnO.sub.2, and, as a coating on the surface of the nuclei, colloidal particles of tungstic oxide-stannic oxide composite having a particles size of from 2 to 7 nm and a WO.sub.3 /SnO.sub.2 weight ratio of from 0.5 to 100, and which has a total content of metal oxides of from 2 to 50 wt %.

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Database WPI, Derwent Publications Ltd., AN 80-33510C, JP-A-55 047 137, Apr. 4, 1980.

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