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

1989-09-19

1993-05-11

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526129, 5263486, 502113, C08F 4629, C08F 4635, C08F 4636, C08F 1002

Patent

active

052101606

ABSTRACT:
Homopolymerization and copolymerization of ethene is carried out using a Ziegler catalyst system consisting of (1) a transition metal catalyst component, (2) an organoaluminum catalyst component and (3) an organohalogen catalyst component. The component (1) used is the solid-phase product (VI) which has been obtained by a method in which (1.1) first (1.1.1) an inorganic oxidic 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 and (IIb2) a titanium trihalide or titanium trihalide/alcohol complex and (IIc) a silicon or boron compound are combined with formation of a suspension (III) and the latter is evaporated to form a solid-phase intermediate (IV) and (1.2) then (1.2.1) the intermediate (IV) obtained in (1.1) and (1.2.2) a dissolved organoaluminum compound (V) are combined with formation of a suspension, the solid-phase product (VI) formed as the suspended substance being the transition metal catalyst component (1).

REFERENCES:
patent: 4210552 (1987-12-01), Bachl et al.
patent: 4831090 (1990-05-01), Bachl et al.
patent: 4999327 (1991-03-01), Kao et al.
U.S. Ser. No. 07/258,762.

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