Preparation of ethene polymers using a ziegler catalyst system

Details Preparation of ethene polymers using a ziegler catalyst system Preparation of ethene polymers using a ziegler catalyst system

1987-09-16

1990-02-13

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502114, 526352, 526901, 526903, 526904, C08F 464, C08F 1002

Patent

active

049007980

ABSTRACT:
Finely divided ethane polymers are prepared using a Ziegler catalyst system consisting of (1) a titanium-containing catalyst component which has been obtained by (1.1) precipitation in an organic liquid comprising (1.1.1) a solution of titanium tetrachloride in a hydrocarbon, (1.1.2) a solution of a certain organoaluminum compound in a hydrocarbon and (1.1.3) an alpha-monoalkene, and (2) an aluminum-containing catalyst component. In this process, the component (1) used is a component where (1.1) precipitation has been carried out at relatively low temperatures in an organic liquid which has a relatively high viscosity at the precipitation temperature and conists of (1) a liquid hydrocarbon an (b) small amounts of a polymer of an alpha-monoalkene dissolved therein, with the provisos that (i) specific amounts of the organic liquid, of the organoaluminum compound and of the alpha-monoalkene are used per g mol of the titanium tetrachloride used in total, and (ii) per molar unit of the titanium tetrachloride used in total, specific amounts per minute are precipitated and specific amounts per minute of the alpha-monoalkene are introduced, and (1.2) the substance precipitated according to (1.1) has been reacted with a lithiumalkyl.

REFERENCES:
patent: 4210729 (1980-07-01), Hermans et al.
patent: 4329251 (1982-05-01), Sunada et al.
patent: 4463145 (1984-07-01), Sunada et al.
patent: 4605714 (1986-08-01), Baker
patent: 4713430 (1987-12-01), Kerth et al.

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