Controlled particle size polyolefins from silica supported prepo

Details Controlled particle size polyolefins from silica supported prepo Controlled particle size polyolefins from silica supported prepo

1994-07-01

1996-09-10

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526351, 526352, 526943, 502107, 502108, 502152, C08F 442

Patent

active

055547044

ABSTRACT:
The invention relates to a novel process for producing a supported metallocene catalyst system useful for the polymerization and/or copolymerization of olefins, alpha-olefins, and/or diolefins which results in a catalyst product which during polymerization, produces minimal to no reactor fouling and polymer of controlled morphology. The invention is particularly useful for but not limited to polymerizing propylene or copolymerizing propylene with olefins having two or more carbon atoms. The novel support technique described herein results in a catalyst which will obtain polymer product having controlled, uniform particle size, narrow molecular weight distribution, high bulk density and depending upon the metallocene employed and monomers polymerized, stereoregularity.

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patent: 5017714 (1991-05-01), Welborn, Jr.
patent: 5026798 (1991-06-01), Canich
patent: 5055436 (1991-10-01), Klemptner et al.
patent: 5057475 (1991-10-01), Canich et al.

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