Silica-modified aluminophosphate compositions, catalysts, method of preparing same and polymerization processes
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United States of America Patent
Stats
-
Aug 29, 2000
Issued Date -
N/A
app pub date -
Oct 31, 1997
filing date -
Oct 31, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An amorphous aluminophosphate composition is provided which exhibits a microstructure of sheets and spheres of silica-modified aluminophosphate. Also provided is a method for preparing the composition comprising mixing an aqueous solution containing aluminum ions, phosphate ions and silica ions, with a neutralizing solution, wherein the mixing is conducted with sufficient shear to produce on a microlevel, sheets of silica-modified aluminophosphate and spheres of silica-modified aluminophosphate. A polymerization catalyst and a polymerization process are also provided.
First Claim
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