Polymerization of olefins with an improved catalyst system using

Details Polymerization of olefins with an improved catalyst system using Polymerization of olefins with an improved catalyst system using

1990-04-20

1991-11-19

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502127, 526351, C08F 4649

Patent

active

050667386

ABSTRACT:
The present invention provides a catalyst system that exhibits unprecedented catalyst efficiencies and control of desired properties in the polymer product. The catalyst system includes a new generation titanium catalyst in combination with an electron donor described by the formula: ##STR1## wherein R.sub.1 is bulky, basic alkyl or cycloalkyl group containing at least one secondary or tertiary carbon atom; R.sub.2 and R.sub.3 are alkyl or aryl groups; and R.sub.4 is an alkyl group with a primary carbon atom attached to the silicon atom. The system has a catalyst efficiency of at least about 30 kg/g-cat.2h as the Al/Si mole ratio varies from 20-200 in the system. The system easily achieves efficiencies over 60 kg/g-cat.2h. The system also exhibits good control over the xylene solubles, melt flow and molecular weight distribution of the polymer product.

REFERENCES:
patent: 4295991 (1981-10-01), Wristers
patent: 4816433 (1989-03-01), Terano et al.

Affiliated with

Also associated with

Rating

Polymerization of olefins with an improved catalyst system using does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymerization of olefins with an improved catalyst system using, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymerization of olefins with an improved catalyst system using will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1371182