C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/69 (2006.01) C08F 4/646 (2006.01) C08F 4/648 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01)
Patent
CA 2106565
2106565 9217511 PCTABS00016 Mixed catalyst compositions comprised of a first supported chromium-containing catalyst component and a second supported chromium-containing catalyst component and which additionally have one or more metallic or non-metallic catalytic agents associated therewith are provided. The additional metallic or non-metallic elements associated with the catalyst components can be aluminium, titanium, zirconium, boron, phosphorous or combinations thereof. The pore volume of the silica supports used for the first and second catalyst components differs by at least 0.3 cc/g. The mixed catalyst compositions of the invention are useful for the preparation of polyolefins. They are particularly useful of polymerization of ethylene in particle form polymerizations to produce high density polyethylene blow molding resins having good processability and physical properties. The improved particle form polymerizations process and products obtained thereby using the above-described mixed catalyst compositions are also described.
Katzen Stanley J.
Lynch Michael W.
Pullukat Thomas J.
Rekers Louis J.
Mcfadden Fincham
Quantum Chemical Corporation
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