Process for producing polyolefins

Details Process for producing polyolefins Process for producing polyolefins

1995-06-02

1997-04-29

Wu, David W.

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

Catalyst or precursor therefor

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

502152, 502256, 502319, 526119, C08F 424

Patent

active

056248776

ABSTRACT:
A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with two different types of supported chromium catalyst systems. The first catalyst system comprises a chromium oxide catalyst system which comprises chromium oxide supported on an inorganic oxide. The second catalyst system comprises a chromocene catalyst system which comprises chromocene supported on an inorganic oxide. The resultant, recovered polymer has a multimodal, or at least a bimodal, molecular weight distribution.

REFERENCES:
patent: 3135809 (1964-06-01), Bosmajian
patent: 3887494 (1975-06-01), Dietz
patent: 4364842 (1982-12-01), McDaniel et al.
patent: 4364855 (1982-12-01), McDaniel et al.
patent: 4397765 (1983-08-01), McDaniel
patent: 4424139 (1984-01-01), McDaniel et al.
patent: 4444962 (1984-04-01), McDaniel et al.
patent: 4444964 (1984-04-01), McDaniel et al.
patent: 4444966 (1984-04-01), McDaniel
patent: 4504638 (1985-03-01), McDaniel et al.
patent: 4530914 (1985-07-01), Ewen et al.
patent: 4690990 (1987-09-01), McDaniel et al.
patent: 4735931 (1988-04-01), McDaniel et al.
patent: 4803253 (1989-02-01), McDaniel et al.
patent: 4806513 (1989-02-01), McDaniel et al.
patent: 4935474 (1990-06-01), Ewen et al.
patent: 4939217 (1990-07-01), Stricklen
patent: 4975403 (1990-12-01), Ewen
patent: 5032562 (1991-07-01), Lo et al.
patent: 5032651 (1991-07-01), McDaniel et al.
patent: 5037911 (1991-08-01), McDaniel et al.
patent: 5064797 (1991-11-01), Stricklen
patent: 5104839 (1992-04-01), McDaniel et al.
patent: 5110214 (1992-05-01), Battiste et al.
patent: 5182244 (1993-01-01), Pettijohn
patent: 5237025 (1993-08-01), Benham et al.
patent: 5310834 (1994-05-01), Katzen et al.

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