The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 1983
Filed:
Mar. 31, 1981
Robert Bachl, Worms, DE;
Peter Klaerner, Battenberg, DE;
Guenther Schweier, Friedelsheim, DE;
Ehler Ehlers, Mutterstadt, DE;
BASF Aktiengesellschaft, , DE;
Abstract
A process for the preparation of homopolymers and copolymers of .alpha.-monoolefins by polymerizing the monomer or monomers with a Ziegler catalyst system comprising (1) a titanium-containing catalyst component and (2) a relevant conventional organo-aluminum compound, (1.1) the catalyst component (1) having been prepared by (1.1.1) milling a titanium compound (I) of the formula TiCl.sub.3.z(AlCl.sub.3) or Cl.sub.m Ti(OB).sub.4-m, where z is from 0 to 0.5, m is from 0 to 3 and B is alkyl, together with (1.1.2) a magnesium alcoholate (II) and, if desired, (1.1.3) a metal chloride (III) of the formula AlCl.sub.3, ZnCl.sub.2 or MnCl.sub.2, to form a milled product (IV), in which polymerization process a catalyst component (1) is employed, in the preparation of which (1.2) the milled product (IV) obtained according to (1.1) is brought together, in an additional step (1.2.1), with (1.2.2) an alkanol (V) and (1.2.3) a liquid alkane (VI), to form a suspension (VII), and thereafter (1.3), in a further additional step (1.3.1), there is added, to the suspension (VII) obtained according to (1.2), (1.3.2) a metal compound (VIII) of a certain type, the metal being aluminum, silicon or titanium, while preserving the suspension state, the product (IX), which results from stage (1.3) and is present as a solid phase in the suspension, constituting the titanium-containing catalyst component (1).