Process for the production of polyolefins

Details Process for the production of polyolefins Process for the production of polyolefins

1980-11-24

1982-04-13

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 252429C, 526125, 526352, C08F 402, C08F 1000

Patent

active

043248764

ABSTRACT:
A process for the homopolymerization or copolymerization of olefins is disclosed. The process is carried out in the presence of a catalyst system comprising the combination of an organometallic compound with a component resulting from the mutual contact of (i) an inorganic magnesium compound of a spherical shape having an average particle size of from 1 to 100 microns; (ii) a compound represented by the formula AlX.sub.3.OR'R" (where X represents a halogen atom, and R' and R" represent a hydrocarbon residual group having 1 to 20 carbon atoms; and (iii) a titanium compound represented by the formula Ti(OR).sub.4 (where R represents a hydrocarbon residual group having 1 to 20 carbon atoms). The resulting polymers are provided with a spherical particle shape.

REFERENCES:
patent: 3658722 (1972-04-01), Delbouille et al.
patent: 3676415 (1972-07-01), Diedrich et al.
patent: 3819599 (1974-06-01), Fotis et al.
patent: 3888835 (1975-06-01), Ito et al.
patent: 3953414 (1976-04-01), Galli et al.
patent: 4111835 (1978-09-01), Foschini et al.

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