Manufacture of olefin polymers

Details Manufacture of olefin polymers Manufacture of olefin polymers

1976-09-07

1979-11-20

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429C, 252431R, 526119, 526124, 526129, 526151, 526153, 526352, C08F 402, C08F 1002

Patent

active

041751701

ABSTRACT:
Manufacture of polymers of .alpha.-monoolefins by polymerization with a Ziegler catalyst system comprising (1) a catalyst component containing titanium and/or vanadium and (2) a particular compound of the metals aluminum, magnesium or zinc. The characteristic feature of the process according to the invention is that the catalyst component (1) containing titanium and/or vanadium is the solid-phase product (VII) contained by first (1.1) bringing a finely divided porous inorganic oxidic material (I), which has the formula Al.sub.2 O.sub.3 or SiO.sub.2.aAl.sub.2 O.sub.3, where a is a number from 0 to 2, into contact with an aluminum compound (II) dissolved in an organic solvent, to form a solid-phase product (III), then (1.2) bringing the solid-phase product (III) obtained in stage (1.1) into contact with a magnesium compound (IV), dissolved in an organic solvent, to form a solid-phase product (V), and finally (1.3) bringing the solid-phase product (V) obtained in stage (1.2) into contact with a compound (VI) of the transition metals titanium and/or vanadium to form a solid-phase product (VII). This process functions better than comparable conventional processes.

REFERENCES:
patent: 3718635 (1973-02-01), Tomoshige et al.
patent: 3787384 (1974-01-01), Stevens et al.
patent: 3956255 (1976-05-01), Ort

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