Polymerization process using a silica gel supported metallocene-

Details Polymerization process using a silica gel supported metallocene- Polymerization process using a silica gel supported metallocene-

1991-10-18

1992-09-15

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 5263486, 502103, 502117, 502120, C08F 442

Patent

active

051479494

ABSTRACT:
This invention relates to a process for polymerizing olefin using a supported metallocene alumoxane catalyst, which can be used in slurry or liquid phase polymerization of olefins. The invention relates to the use of silica gel containing from about 10 to about 50% by weight adsorbed water as the catalyst support material. It has been found that such silica gel may be safely added to an aluminum trialkyl solution to form by direct reaction with the adsorbed water content of the silica gel catalyst support material the alumoxane component of the catalyst system. An alumoxane coated silica gel was formed to which a metallocene may be added. The resulting material can either be used in this slurry state for slurry polymerization or can be used for liquid phase polymerization.

REFERENCES:
patent: 4937301 (1990-06-01), Chang

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