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    PROCESS FOR POLYMERIZATION OF 2-8C ALK-1-ENE WITH ZIEGLER-NATTA CATALYST COMPOSITION
    1.
    发明专利
    PROCESS FOR POLYMERIZATION OF 2-8C ALK-1-ENE WITH ZIEGLER-NATTA CATALYST COMPOSITION 失效

    公开(公告)号：JPH1171415A

    公开(公告)日：1999-03-16

    申请号：JP18748298

    申请日：1998-07-02

    Applicant: BASF AG

    Inventor： KERSTING MEINOLF DR ,  LUTZ GERALD DR ,  LANGHAUSER FRANZ DR

    IPC: B01J19/18 ,  C08F2/00 ,  C08F2/34 ,  C08F2/38 ,  C08F4/648 ,  C08F4/659 ,  C08F10/00 ,  C08F10/06 ,  C08F297/08

    Abstract: PROBLEM TO BE SOLVED: To provide a polymerization method of 2-8C alk-1-ene with a Ziegler- Natta catalyst composition for reducing or completely inhibiting coagulation the formation of deposition and sludge of the polymer particles. SOLUTION: A 2-8C 1-alkene is polymerized in the presence of a Ziegler- Natta catalyst composition in a cascade comprising at least two reactors. In a reactor 1, which may be linked to one or a plurality of reactors in the upstream, homopolymer or copolymer of l-alkenes is formed. The polymerization reaction mixture is discharged form the reactor l, and transferred to the subsequent reactor 2. The polymerization in the reactor 2 and the reactors that may be linked to the reactor 2 is carried out in the presence of a liquid or dissolved controlling agent for control the catalytic activity. The controlling agent is discharged from the reactor l and then added to the polymerization reaction mixture prior to being introduced in the reactor 2.

    PROPYLENE POLYMER
    4.
    发明专利
    PROPYLENE POLYMER 失效

    公开(公告)号：JPH1180245A

    公开(公告)日：1999-03-26

    申请号：JP17743498

    申请日：1998-06-24

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN DR ,  ROESCH JOACHIM DR ,  LANGHAUSER FRANZ DR ,  LILGE DIETER DR ,  HINGMANN ROLAND DR

    IPC: C08J5/18 ,  C08F4/02 ,  C08F4/646 ,  C08F6/04 ,  C08F10/00 ,  C08F10/06 ,  C08F210/16 ,  C08L23/10 ,  C08L23/12 ,  C08L23/14 ,  D01F6/06 ,  D01F6/30

    Abstract: PROBLEM TO BE SOLVED: To provide a propylene polymer which has a high rigidity/strength ratio and low chlorine content, and can be produced by a process with high productivity. SOLUTION: A propylene polymer containing a matrix comprising a propylene homopolymer and a copolymer of propylene with other alkene is first dissolved in boiling xylene, the solution is cooled at a cooling rate of 10 deg.C per hr to 25 deg.C, the temperature is then raised to separate the propylene polymer into fractions of various solubilities according to the stereoregularities of polymer chains and the comonomer distributions, wherein the matrix remaining undissolved when the cooled propylene polymer solution is heated to 80 deg.C satisfies one or more of the following conditions: i) the matrix remains undissolved in an amount above 20 wt.% when further heated to 112 deg.C; ii) it remains undissolved in an amount above 8 wt.% when further heated to 117 deg.C; and iii) it remains undissolved in an amount above 1 wt.% when further heated to 122 deg.C.

    RANDOM PROPYLENE COPOLYMER
    5.
    发明专利
    RANDOM PROPYLENE COPOLYMER 失效

    公开(公告)号：JPH1171432A

    公开(公告)日：1999-03-16

    申请号：JP14730498

    申请日：1998-05-28

    Applicant: BASF AG

    Inventor： KERSTING MEINOLF DR ,  SCHOENE WERNER ,  LANGHAUSER FRANZ DR

    IPC: C08F2/34 ,  C08F4/02 ,  C08F4/642 ,  C08F4/654 ,  C08F4/658 ,  C08F10/00 ,  C08F210/06 ,  C08F210/16

    Abstract: PROBLEM TO BE SOLVED: To obtain a copolymer having high rigidity and a low chlorine content, by copolymerizing propylene with ethylene and a specified alkene in the absence of a liquid reaction medium under conditions in which the ratio among the partial pressures of the respective monomers is specified. SOLUTION: Propylene is copolymerized with ethylene and a 4-10 C 1-alkene in the absence of a liquid reaction medium under conditions in which the ratio of the partial pressure of propylene to that of ethylene is 20:1 to 100:1, and the ratio of the partial pressure of the 1-alkene to that of the ethylene is 2.5:1 to 20:1 in the presence of a Ziegler/Natta catalyst containing a titanium- containing solid component containing a halogen-containing magnesium, an electron donor and an inorganic oxide carrier, an aluminum compound and an electron donor mixture in a gas phase under a pressure of 15-40 bar at a temp. of 50-100 deg.C for 0.5-5 hr to obtain a random propylene copolymer having a number-average molecular weight of 20,000-50,000, a melt flow index of 0.1-100 g/10 min and a melting point (DSC) of 135 deg.C or below.

    ZIEGLER/NATTA CATALYST MODIFIED IN PROCESS OF PRODUCTION AND ITS PRODUCTION
    7.
    发明专利
    ZIEGLER/NATTA CATALYST MODIFIED IN PROCESS OF PRODUCTION AND ITS PRODUCTION 失效

    公开(公告)号：JPH10152517A

    公开(公告)日：1998-06-09

    申请号：JP24886197

    申请日：1997-09-12

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN DR ,  MOLL ULRICH DR ,  MAC KENZIE IAN DAVID DR ,  LANGHAUSER FRANZ DR ,  KOELLE PETER DR ,  HINGMANN ROLAND DR ,  SCHWEIER GUENTHER DR ,  HEMMERICH RAINER DR ,  KERTH JUERGEN DR

    IPC: C08F4/02 ,  C08F4/642 ,  C08F4/646 ,  C08F4/654 ,  C08F4/658 ,  C08F10/00

    Abstract: PROBLEM TO BE SOLVED: To provide Ziegler/Natta catalyst composition capable of providing a high productivity and stereospecificity, producible in a short time and capable of reducing the amount a titanium- or a chlorine-containing starting material. SOLUTION: This Ziegler/Natta catalyst composition comprises (a) a titanium- containing solid component, (b) an aluminum compound and, as necessary, (c) an electron donative compound. The component (a) is produced by mixing an inorganic compound as a carrier with a solution of a magnesium compound without containing chlorine in an inert solvent, then reacting the resultant mixture with a 1-8C alkanol in an excessive amount of >=1.3 times based on the magnesium compound at -20 to +80 deg.C under stirring, subsequently mixing the prepared product with a tri- or a tetravalent titanium compound and a carboxylic acid ester as an electron donor without carrying out the purification and extraction thereof, then separating a solid material by filtration, extracting the resultant solid with a solution containing >=5wt.% titanium tetrachloride in an inert solvent and further washing the solid material with a liquid alkane.

    10.
    发明专利
    未知

    公开(公告)号：DE59407901D1

    公开(公告)日：1999-04-15

    申请号：DE59407901

    申请日：1994-09-03

    Applicant: BASF AG

    Inventor： SEELERT STEFAN DR ,  LANGHAUSER FRANZ DR ,  KERTH JUERGEN DR ,  MUELLER PATRIK DR ,  FISCHER DAVID DR ,  SCHWEIER GUENTHER DR

    IPC: C08F2/34 ,  C08F4/60 ,  C08F4/622 ,  C08F4/639 ,  C08F4/6392 ,  C08F4/642 ,  C08F4/646 ,  C08F4/6592 ,  C08F4/68 ,  C08F4/69 ,  C08F10/00 ,  C08F10/06 ,  C08F110/06 ,  C08F210/16 ,  C08F295/00 ,  C08F297/08

    Abstract: A process for the preparation of multiphase homopolymers or copolymers of C2-C10-alk-1-enes, characterised in that the polymerisation is carried out in one reaction zone in the presence of two different catalyst systems, where one of the catalyst systems contains, as active constituents, a metallocene complex of the formula (I) or (II) in which M is a metal from group IVb, Vb or VIb of the Periodic Table, R and R are identical or different and are a hydrogen atom, a C1-C10-alkyl group, a C1-C10-alkoxy group, a C6-C10-aryl group, a C6-C10-aryloxy group, a C2-C10-alkenyl group, a C7-C40-arylalkyl group, a C7-C40-alkylaryl group, a C8-C40 arylalkenyl group or a halogen atom, R and R are identical or different and are a hydrogen atom, a halogen atom, a C1-C10-alkyl group, which may be halogenated, a C6-C10-aryl group, an -NR 2, -SR , -OSiR 3, - SiR 3 or -PR 2 radical, in which R is a halogen atom, a C1-C10-alkyl group or a C6-C10-aryl group, and R and R are identical or different and are as defined for R and R with the proviso that R and R are not hydrogen.

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