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    MANUFACTURE OF PARTICULATE POLYETHYLENE
    1.
    发明专利
    MANUFACTURE OF PARTICULATE POLYETHYLENE 未知

    公开(公告)号：AU4205872A

    公开(公告)日：1973-11-15

    申请号：AU4205872

    申请日：1972-05-09

    Applicant: BASF AG

    Inventor： MUELLER-TAMM HEINZ ,  FRIELINGSDORF HANS ,  NICKL JOHANN ,  KOLK ERICH

    IPC: C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F1/56

    Abstract: Manufacture of particulate polyethylene by polymerizing ethylene in an agitated bed of dry particulate polyethylene by means of a catalyst system comprising (1) a particulate inorganic carrier and (2) a Ziegler catalyst applied to said carrier. The catalyst system is used in the form of an intimate mixture of the catalyst system with a particulate ethylene polymer having a softening point above the polymerization temperature used, the particles in said mixture being coated with an inert organic material which is solid at 30 DEG C but liquid at the polymerization temperature used. This process makes it possible to obtain particulate polyethylene having a desirable particle size distribution.

    MANUFACTURE OF A TITANIUM-CONTAINING COMPONENT FOR CATALYSTS OF THE ZIEGLER-NATTA TYPE
    3.
    发明专利
    MANUFACTURE OF A TITANIUM-CONTAINING COMPONENT FOR CATALYSTS OF THE ZIEGLER-NATTA TYPE 未知

    公开(公告)号：AU3109077A

    公开(公告)日：1979-06-07

    申请号：AU3109077

    申请日：1977-11-30

    Applicant: BASF AG

    Inventor： MUELLER-TAMM HEINZ ,  SCHICK HANS ,  JAGGARD JAMES F R ,  NICKL JOHANN

    IPC: C08F4/00 ,  C01G23/02 ,  C08F4/60 ,  C08F4/64 ,  C08F4/651 ,  C08F10/00 ,  C08F10/06 ,  C08F10/08 ,  C08F10/14

    Abstract: A process for the manufacture of a titanium-containing component of a catalyst for the polymerization of monoolefins by the Ziegler-Natta method by milling (a) a particular titanium-containing compound, viz. a titanium trichloride/aluminum trichloride complex and (b) a particular ester with one another, in which process (1) a vibratory ball mill producing a particular milling acceleration is used, (2) the mill is first charged with the titanium-containing compound (a) and may or may not then be run for some time in the absence of diluents, (3) while milling, the ester (b) is added at a particular rate, continuously or in small portions, and in the absence of diluents, thereafter (4) the grist is brought to an elevated temperature, while milling, and is kept at this temperature until from 5 to 85% of the aluminum trichloride originally present in a bonded form in the titanium-containing compound (a) have been eliminated from the said compound (a), after which (5) if appropriate, the product obtained in accordance with (4) is washed with a hydrocarbon and dried, and then (6) the product obtained in accordance with (4) or in accordance with (5) is milled for a certain length of time at a low temperature in the absence of a diluent. Polyolefins of high stereoregularity can be obtained in a high specific yield by means of the catalyst component manufactured according to the invention.

    CONTINUOUS PREPARATION OF ISOBUTYLENE POLYMERS
    4.
    发明专利
    CONTINUOUS PREPARATION OF ISOBUTYLENE POLYMERS 未知

    公开(公告)号：CA1222346A

    公开(公告)日：1987-05-26

    申请号：CA444590

    申请日：1984-01-03

    Applicant: BASF AG

    Inventor： BRONSTERT KLAUS ,  NICKL JOHANN ,  KRAUSE HANS-JOACHIM ,  SCHMITT WERNER

    IPC: C08F2/00 ,  C08F2/04 ,  C08F2/06 ,  C08F8/00 ,  C08F10/10

    Abstract: Isobutylene polymers are prepared continuously, in aliphatic C3-C6-hydrocarbons in the presence of soluble cationic polymerization initiators and coinitiators at from -40 to 40.degree.C and under from 0.,01 to 10 bar, and the solvents and monomers vaporized during the polymerization are recycled, by a process in which the liquid stream of the monomer solution, containing 40 - 95, in particular 50 - 85, per cent by weight of the monomers, the liquid streams of the recycle and of the coinitiator solution and the separate stream of the initiator solution are combined in a first zone containing the polymerization zone, and the resulting polymer solution is taken off continuously through a second zone vertically below the first zone. The liquid streams of the monomer solution, the coinitiator solution and the recycle can furthermore be fed into the first zone separately from one another.

    MANUFACTURE OF PARTICULATE POLYETHYLENE
    9.
    发明专利
    MANUFACTURE OF PARTICULATE POLYETHYLENE 未知

    公开(公告)号：AU4205972A

    公开(公告)日：1973-11-15

    申请号：AU4205972

    申请日：1972-05-09

    Applicant: BASF AG

    Inventor： MUELLER-TAMM HEINZ ,  FRIELINGSDORF HANS ,  NICKL JOHANN ,  KOLK ERICH

    IPC: C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F1/56

    Abstract: Manufacture of particulate polyethylene by polymerizing ethylene in an agitated bed of dry particulate polyethylene by means of a catalyst system comprising (1) a particulate inorganic carrier and (2) a Ziegler catalyst applied to said carrier. The catalyst system is used in the form of an intimate mixture of the catalyst system with a particulate ethylene polymer which does not soften at the polymerization temperature used, the particles in said mixture being coated with a saturated hydrocarbon wax which is solid at 30 DEG C but liquid at the polymerization temperature used. This process makes it possible to obtain particulate polyethylene having a desirable particle size distribution.

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