Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Patent
1987-05-08
1988-08-16
Garvin, Patrick P.
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
423593, 423608, 423622, 423625, 501 1, 501 12, 501 94, 501103, 501134, 420901, C01B 3312
Patent
active
047643579
ABSTRACT:
A finely divided metal oxide powdery composition, preferably with a narrow particle size distribution, is produced from a particulate, sol-gel derived composition containing agglomerates by heating the particulate composition in the presence of an effective amount of a composition which decomposes upon heating and forms a gas to break at least a portion of the agglomerates so as to yield the desired finely divided ceramic particle composition. Examples of suitable gas-forming agents for use in the present invention include the ammonium salts or amides of organic and inorganic acids, volatile acids, and gases dissolved in a suitable solvent, such as water, alcohol or ammonia.
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Sherif Fawzy G.
Via Francis A.
Akzo America Inc.
Fennelly Richard P.
Garvin Patrick P.
Harvey Paige C.
Morris Louis A.
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