Zirconia-titania-silica tergels and their use as catalyst supports
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United States of America Patent
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Dec 13, 1988
Issued Date -
N/A
app pub date -
Nov 12, 1986
filing date -
Oct 7, 1983
priority date (Note) -
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Abstract
A method of preparing a high pore volume, high surface area zirconia-titania-silica tergel useful as an olefin polymerization or copolymerization catalyst support comprises the steps of coprecipitating hydrous zirconia, hydrous titania and hydrous silica, aging and washing the resulting hydrotergel, removing water from the washed hydrotergel and optionally calcining the resulting xerotergel. Resins with predetermined properties such as high melt index, broad molecular weight distribution, high weight swell, etc. can be produced from catalysts of the chromium or Ziegler type based on these supports.
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