Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1981-03-31
1983-01-04
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
252429B, 526114, 526119, 526122, 526352, 526906, C08F 402, C08F 1000
Patent
active
043673210
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).
REFERENCES:
patent: 3941760 (1976-03-01), Herbeck et al.
patent: 4224183 (1980-09-01), Staeger
patent: 4239650 (1980-12-01), Franke et al.
patent: 4305840 (1981-12-01), Zucchini et al.
Bachl Robert
Ehlers Ehler
Klaerner Peter
Schweier Guenther
BASF - Aktiengesellschaft
Smith Edward J.
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