Process for the production of ultrafine plate-like alumina...

Details Process for the production of ultrafine plate-like alumina... Process for the production of ultrafine plate-like alumina...

2004-01-06

2009-08-18

Langel, Wayne (Department: 1793)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S630000

Reexamination Certificate

active

07575736

ABSTRACT:
A process for producing plate-like alumina particles with a high aspect ratio is described. Nano-sized particles of an aluminium precursor compound, optionally formed by milling, are mixed with a sufficient volume fraction of a diluent and heat treated to form substantially discrete plate-like alpha alumina particles dispersed in the diluent. A mineraliser may be added to lower the effective melting point of the system. Substantially discrete plate-like particles may be formed without agitation when the heat treatment is conducted below the melting point of the diluent.

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