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    41.
    发明专利
    未知

    公开(公告)号：DE19545499A1

    公开(公告)日：1997-06-12

    申请号：DE19545499

    申请日：1995-12-06

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN DR ,  KERSTING MEINOLF DR ,  LANGHAUSER FRANZ DR ,  WERNER RAINER ALEXANDER DR ,  MUELLER PATRIK DR ,  KERTH JUERGEN DR

    IPC: C08F4/658 ,  C08F4/02 ,  C08F4/64 ,  C08F4/654 ,  C08F210/06 ,  C08F210/16 ,  D01F6/06 ,  C08L23/14 ,  D01F6/30

    Abstract: Statistical propylene copolymers with 2-10C alk-1-ene comonomer (alkene) units are claimed, obtained by polymerisation of propylene and alkene at 50-100 degrees C and 15-40 bar with a mean residence time of 0.5-5 hrs., in presence of a Ziegler-Natta catalyst with: (a) a titanium-containing solid component containing a magnesium compound, a halogen, a silica gel support and a carboxylate ester as electron donor; plus (b) an aluminium compound; and (c) another electron donor as cocatalysts. The silica gel support has an average particle diameter of 5-200 mu m and an average primary particle diameter of 1-10 mu m, and contains 5-20 vol% of pores or channels with an average diameter of 1-10 mu m. Also claimed is a process for the production of propylene copolymers.

    42.
    发明专利
    未知

    公开(公告)号：DE59207422D1

    公开(公告)日：1996-11-28

    申请号：DE59207422

    申请日：1992-08-29

    Applicant: BASF AG

    Inventor： KERSTING MEINOLF DR ,  KERTH JUERGEN DR ,  HUNGENBERG KLAUS-DIETER DR ,  KOELLE PETER DR

    IPC: C08F4/654 ,  C08F4/60 ,  C08F4/642 ,  C08F4/646 ,  C08F4/648 ,  C08F4/651 ,  C08F4/657 ,  C08F10/00

    Abstract: The present invention relates to a novel process for the preparation of Ziegler-Natta catalyst systems containing, as active constituents, a) a titanium-containing solid component which contains titanium, magnesium, halogen and a carboxylic ester and, as cocatalyst, b) an aluminium compound and c) optionally a further electron-donor compound. The invention furthermore relates to Ziegler-Natta catalyst systems obtainable by this process, to the preparation of polymers of propylene with the aid of these catalyst systems, to polymers obtainable by this preparation method, and to films and mouldings made from these polymers.

    46.
    发明专利
    未知

    公开(公告)号：AT123785T

    公开(公告)日：1995-06-15

    申请号：AT91100185

    申请日：1991-01-08

    Applicant: BASF AG

    Inventor： SCHWAGER HARALD DR ,  KERTH JUERGEN DR ,  ZOLK RALF DR ,  KOELLE PETER DR ,  WERNER RAINER ALEXANDER DR

    IPC: C08F4/655 ,  C08F4/60 ,  C08F297/02 ,  C08F297/08

    Abstract: Propylene-ethylene copolymers obtainable by two-step polymerisation from the gas phase in an agitated fixed bed by means of a Ziegler-Natta catalyst system containing an aluminium compound as cocatalyst in addition to a titanium-containing solid component, in which, in a first polymerisation step, propylene is polymerised at a pressure of from 20 to 40 bar, a temperature of from 60 to 90 DEG C and a mean residence time of the reaction mixture of from 1 to 5 hours, giving from 0.05 to 2 kg of polypropylene per mmol of the aluminium compound, and subsequently, in a second polymerisation step, a mixture of propylene and ethylene is polymerised onto the polymer discharged from the first polymerisation step, at a pressure of from 5 to 30 bar, this pressure being at least 7 bar below the pressure in the first polymerisation step, a temperature of from 30 to 100 DEG C and a mean residence time of the reaction mixture of from 1 to 5 hours, the ratio between the partial pressures of propylene and ethylene being set in the range from 0.5 : 1 to 5 : 1, and a) the weight ratio between the monomers reacted in the first and second polymerisation steps is set so that it is in the range from 2.5 : 1 to 20 : 1, or b) the polymerisation in the second polymerisation step is carried out in the presence of a C1-C8 alkanol, the weight ratio between the monomers reacted in the first and the second polymerisation steps being from 1 : 1 to 20 : 1. s

    49.
    发明专利
    未知

    公开(公告)号：ES2061836T3

    公开(公告)日：1994-12-16

    申请号：ES89115312

    申请日：1989-08-19

    Applicant: BASF AG

    Inventor： ZOLK RALF DR ,  KERTH JUERGEN DR ,  HEMMERICH RAINER DR

    IPC: C08F4/658 ,  C08F4/02 ,  C08F4/58 ,  C08F4/60 ,  C08F4/64 ,  C08F4/646 ,  C08F10/00 ,  C08F10/06

    Abstract: The invention relates to the preparation of polymers of propene by means of a Ziegler-Natta catalyst system comprising (1) a titanium component which is based on a finely divided, shaping silica gel and contains titanium, magnesium, chlorine and a benzenecarboxylic acid derivative, (2) an aluminium component and (3) a silane component, characterised in that the titanium component (1) used is obtained by (1.1) first (I) preparing a carrier from (Ia) a silica gel, (Ib) an organomagnesium compound, (Ic) a gaseous chlorinating agent and (Id) a certain phthalic acid derivative, by (1.1.1) first reacting (Ia) with (Ib), (1.1.2) then passing (Ic) into the product from (1.1.1) and introducing the phthalic acid derivative (Id) and isolating (I), (1.2) then preparing a solid-phase intermediate from (I), (II) an alkanol, and (III) titanium tetrachloride by (1.2.1) first reacting (I) with (II), (1.2.2) subsequently introducing (III) into the product from (1.2.1), (1.3) then extracting the solid-phase product from (1.2) with titanium tetrachloride or a mixture of titanium tetrachloride and ethylbenzene, and (1.4) finally washing the solid-phase product from (1.3) with a liquid hydrocarbon.

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