Catalyst system for the polymerization of olefins, process for t

Details Catalyst system for the polymerization of olefins, process for t Catalyst system for the polymerization of olefins, process for t

1997-06-09

1999-04-06

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526153, 526901, C08F11006, C08F 1006

Patent

active

058919767

ABSTRACT:
Catalyst systems comprising, on the one hand, a catalytic solid based on complexed titanium trichloride and, on the other hand, a nonhalogenated organoaluminium activator. When employed in gas phase olefin polymerization processes, these catalyst systems make it possible to manufacture a wide range of homopolymers and copolymers (random and block) with an isotacticity index which can be adjusted to very low values and with excellent pourability, even in the case of copolymers of high comonomer content. In the absence of transfer agents they also make it possible to synthesize polymers of very high molecular masses, with an increased activity. These polymerization processes yield particularly advantageous results in the case of propylene.

REFERENCES:
patent: 3014016 (1961-12-01), Natta et al.
patent: 3462403 (1969-08-01), Pendleton
patent: 4115533 (1978-09-01), Yamaguchi et al.
patent: 4210729 (1980-07-01), Hermans et al.
patent: 4420593 (1983-12-01), Sato et al.
patent: 5206198 (1993-04-01), Costa et al.
Communications to the Editor, Macromolecules, vol. 6, pp. 925-926 (Nov.-Dec. 1973).
Carman et al., Monomer Sequence Distribution in Ethylene Propylene Elastomer. I. Measurement by Carbon-13 Nuclear Magnetic Resonance Spectroscopy, Rubber Chemistry and Technology, 44, pp. 781-805 (1974).
Derwent Abstract Accession No. 79-88287B, (1979).
Boor, John Jr., Ziegler-Natta Catalysts and Polymerizations, Academic Press, New York, pp. 108-115 (1979).
Billmeyer, Fred W. Jr., Textbook of Polymer Science, Third Edition, John Wiley & Sons, New York, pp. 91-96 (1984).
Maiyer et al., "Properties of Polypropylene Synthesized on a Titanium-Magnesium Catalyst", Polymer Science USSR vol. 33, No. 5, pp. 924-930 (1991).

Affiliated with

Also associated with

Rating

Catalyst system for the polymerization of olefins, process for t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalyst system for the polymerization of olefins, process for t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst system for the polymerization of olefins, process for t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1372226