Ziegler-natta catalyst

Details Ziegler-natta catalyst Ziegler-natta catalyst

1991-05-01

1992-08-11

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526351, 502126, 502127, C08F 4654

Patent

active

051379961

ABSTRACT:
A Zeigler-Natta type catalyst suitable for polymerizing propylene comprising a preactivated support coated with 0.1 to 10 g of homopolymer or copolymer of propylene. The preactivated support which comprises magnesium chloride and 1 to 20% by mol of an electron donor free from labile hydrogen and from ester function, is in the form of spherical particles having a mean diameter by mass of 10 to 100 microns and a ratio of the mean diameter by mass to the mean diameter by number of less than 2.0. The preactivated support is treated with at least one internal electron donor compound and coated by contacting the treated support with an alkyl aluminium halide and propylene, optionally together with ethylene and/or a C.sub.4-8 alpha-olefin, in the absence of an external electron donor compound.

REFERENCES:
patent: 3953414 (1976-04-01), Galli et al.
patent: 4295991 (1981-10-01), Wristers
patent: 4326988 (1982-04-01), Welch et al.
patent: 4497904 (1985-02-01), Blaya et al.
patent: 4511703 (1985-04-01), Bailly
patent: 4543389 (1985-09-01), Burstain et al.
patent: 4960741 (1990-10-01), Bailly et al.

Affiliated with

Also associated with

Rating

Ziegler-natta catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ziegler-natta catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ziegler-natta catalyst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-347230