Chromium catalyst compositions and polymerization utilizing same

Details Chromium catalyst compositions and polymerization utilizing same Chromium catalyst compositions and polymerization utilizing same

1990-08-22

1992-01-14

Garvin, Patrick P.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502162, 502256, 526129, C08F 469

Patent

active

050810898

ABSTRACT:
Improved mixed chromium catalysts useful in particle form polymerizations to produce readily processable high density polyolefin resins which also have high resistance to environmental stress cracking are provided. First and second chromium-containing catalyst components obtained using silica supports of different pore volumes and wherein one of the catalyst components also contains aluminum are employed for the preparation of the mixed catalysts. The polymerization process and products obtained using the above-described mixed catalysts are also described.

REFERENCES:
patent: 3984351 (1976-10-01), Rekers et al.
patent: 3985676 (1976-10-01), Rekers et al.
patent: 4295997 (1981-10-01), McDaniel et al.

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