Preparation of homopolymers of ethene and copolymers of ethene w

Details Preparation of homopolymers of ethene and copolymers of ethene w Preparation of homopolymers of ethene and copolymers of ethene w

1987-10-15

1989-05-16

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502113, 526114, 526138, 5263486, C08F 466, C08F 1002

Patent

active

048310905

ABSTRACT:
Homopolymerization and copolymerization of ethene are carried out using a Ziegler catalyst system consisting of (1) a transition metal catalyst component prepared by a method in which (1.1) first (1.1.1) an inorganic oxide substance (I) as a carrier and (1.1.2) a solution (II) of (IIa) a certain oxahydrocarbon and (IIb) a mixture of (IIb1) a vanadium trichloride/alcohol complex, (IIb2) a titanium trihalide or titanium trihalide/alcohol complex and, if desired, (IIb3) a zirconium tetrahalide, are combined with formation of a suspension (III), the latter is evaporated down to form a solid-phase intermediate (IV), (1.2) then (1.2.1) the solid-phase intermediate (IV) obtained from (1.1), and (1.2.2) a dissolved organoaluminum compound (V), are combined with formation of a suspension, the resulting suspended substance being a solid-phase product (VI), (2) an organoaluminum catalyst component and (3) an organohalogen catalyst component. In this process, the transition metal catalyst component (1) used is one prepared by a method in which (1.3) in addition (1.3.1) the product (VI) obtained from (1.2) is reacted with (1.3.2) oxygen, the resulting solid-phase end product (VII) being the novel transition metal catalyst component (1).

REFERENCES:
patent: 3674766 (1972-07-01), Mottus et al.
patent: 3764591 (1973-10-01), Miyoshi et al.
patent: 4556648 (1985-12-01), Kawai et al.
patent: 4710552 (1987-12-01), Bachl et al.

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