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    PROCESS FOR PRODUCING ALPHA-OLEFIN HOMO AND CO-POLYMERS WITH A ZIEGLER-NATTA CATALYTIC SYSTEM
    24.
    发明专利
    PROCESS FOR PRODUCING ALPHA-OLEFIN HOMO AND CO-POLYMERS WITH A ZIEGLER-NATTA CATALYTIC SYSTEM 未知

    公开(公告)号：DE3168584D1

    公开(公告)日：1985-03-14

    申请号：DE3168584

    申请日：1981-04-18

    Applicant: BASF AG

    Inventor： JAGGARD JAMES F R DR ,  KLAERNER PETER DR ,  SCHWEIER GUENTHER DR

    IPC: C08F4/64 ,  C08F10/00

    Abstract: A process for the preparation of homopolymers and copolymers of alpha -monoolefins by means of a Ziegler-Natta catalyst system comprising (1) a titanium-III component, which is prepared by subjecting (1.1) a titanium trichloride/aluminum trichloride compound (a) and (1.2) an ester (b) to a certain type of milling treatment in which (A) a vibratory ball mill providing a relatively high milling acceleration is used, (B) the mill is first charged with the titanium-containing compound (a) and, if appropriate, is run for a certain period, thereafter (C) the ester (b) is added at a certain rate while milling the charge, thereupon (D) the charge is kept at +15 DEG C. or above for a certain period, while continuing the milling, hereupon (E), if appropriate, the product obtained from (D) is milled further for a certain period at +5 DEG C. or below, then (F), if appropriate, but advantageously so, the product obtained from (D) or (E) is kept at +20 DEG C. or above for a certain period, without milling, and thereafter (G), if appropriate, the product obtained from (F) is milled further for a certain period at +5 DEG C. or below, (2) an aluminum-alkyl component containing a chlorine bonded to the aluminum, and (3), if appropriate, a phenolic compound of a certain category, in which process a titanium-III component (1) is employed, in the preparation of which additionally -(H) a suspension is prepared from (H1) the product obtained according to (D), (E), (F) or (G), (H2) a liquid hydrocarbon (c) and (H3) an oxygen-containing compound (d), consisting of (d1) an ether of a certain category and/or (d2) an ester of a certain category, thereafter (I) the suspension obtained according to (H) is kept at an elevated temperature for a certain period, with vigorous agitation, and is then cooled, hereupon (J), if appropriate, the solid is isolated from the suspension obtained according to (I), and, if desired, is washed with a liquid hydrocarbon and dried, the novel titanium-III component (1) being the solid, in suspended form, obtained according to (I) or the solid, in isolated form, obtained according to (J). Using this Ziegler-Natta catalyst system, polymers with relatively high stereo-regularity and advantageous morphological properties can be obtained in relatively high yield.

    Process for the preparation of homopolymers and copolymers of alpha -monoolefins by means of a Ziegler catalyst system
    25.
    发明专利
    Process for the preparation of homopolymers and copolymers of alpha -monoolefins by means of a Ziegler catalyst system 未知

    公开(公告)号：DE3237737A1

    公开(公告)日：1984-04-12

    申请号：DE3237737

    申请日：1982-10-12

    Applicant: BASF AG

    Inventor： KLAERNER PETER DR ,  GRUBER WOLFGANG DR

    IPC: C08F10/00

    Abstract: The invention relates to a process for the preparation of homopolymers and copolymers of alpha -monoolefins by polymerising the monomer or monomers by means of a Ziegler catalyst system comprising (1) a vanadium trichloride component and (2) an alkylaluminium component, characterised in that the vanadium trichloride component (1) employed has been obtained by (1.1) in a first step, keeping a suspension of (1.1.1) a finely divided vanadium trichloride, (1.1.2) an alkanol, and (1.1.3) a liquid hydrocarbon which is inert toward the vanadium trichloride (1.1.1), at a certain temperature for a certain time with constant mixing, and then (1.2), optionally and advantageously, in a second step, (1.2.1) combining the suspension obtained from the first step (1.1) with (1.2.2) a hydrocarbon organoaluminium compound and keeping the mixture at a certain temperature for a certain time with constant mixing, and in this way obtaining the novel vanadium trichloride catalyst component (1) by means of the solid which is in suspended form after step (1.1) or (1.2). The polymers obtained have particular combinations of properties.

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