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Title
Verfahren und Mittel zur Herstellung von alpha-Al2O3
Date Issued
1995
Author(s)
Schmidt, H.
Nass, R.
Sporn, D.
Brehler, K.P.
Patent No
1990-4016637
Abstract
The invention relates to a process for the production of <alpha>-Al<-2 O<-3 by the hydrolytic condensation of aluminium compounds. Hydrolyzable aluminium compounds based on the general formula of AlRR'R'', where R, R' and R'' each mean branched or unbranched alkyl, alkoxyl or acyloxy groups or anions are converted into aluminium/<beta> diketone compounds before hydrolysis with <beta> diketones of the formula 1 where R->1, R->2 and R->3 mean branched or unbranched alkyl or alkoxyl or hydrogen atoms respectively. The aluminium/<beta> diketone complex compounds are condensed hydrolytically and heated to temperatures of >= 900<degrees Celsius>C.
Language
de
Patenprio
DE 1990-4016637 A1: 19900523