Catalyst supports, supported metallocene catalysts and their use for the preparation of polyolefins
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United States of America Patent
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Jun 8, 1999
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N/A
app pub date -
Jul 14, 1997
filing date -
Jun 3, 1994
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Abstract
Process for preparing a catalyst support, in which a hydrophilic, macroporous, finely divided aluminum oxide, silicon oxide, titanium oxide or zirconium oxide or a mixture or mixed oxide thereof is dried at from 110 to 800.degree. C., then reacted with an aluminoxane and subsequently with polyfunctional organic crosslinkers. In a further step, the catalyst support can be mixed with a reaction product of metallocenes and activators, giving a supported metallocene catalyst which is used, in particular, for the polymerization of olefins.
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