中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

141 records (took 0.02 seconds)

    Low white fracture propylene 1-alkene copolymer(s) - obtd. in two=stage fluidised bed Ziegler-Natta process with control of conversion and partial pressure ratios
    31.
    发明专利
    Low white fracture propylene 1-alkene copolymer(s) - obtd. in two=stage fluidised bed Ziegler-Natta process with control of conversion and partial pressure ratios 未知

    公开(公告)号：DE4004087A1

    公开(公告)日：1991-08-14

    申请号：DE4004087

    申请日：1990-02-10

    Applicant: BASF AG

    Inventor： SCHWAGER HARALD DR ,  KERTH JUERGEN DR

    IPC: C08F2/34 ,  C08F4/642 ,  C08F10/00 ,  C08F210/06 ,  C08F297/08

    Abstract: Propylene/1-alkene copolymers are claimed which are prepd. in a two-stage gas-phase process in a fluidised bed system using a Ziegler-Natta catalyst contg. a Ti solid component and also an Al cpd., the process comprising: (a) effecting a first stage at 20-40/bar and 60-90 deg.C for ave. dwell time 1-5 hrs. so as to give 0.05-2 kg copolymer per mmol. Al cpd., with the ratio of partial pressure of the propylene to that of the 1-alkene being held at 10-500:1, and then (b) effecting further copolymerisation of the first stage prod. at 5-25 bar (but at least 7 bar below the first stage pressures) and 30-80 deg.C for ave. dwell time 1-5 hrs with the ratio of propylene partial pressure to that of the 1-alkene being 0.5-20:1 and with the wt. ratio of monomer converted in the first stage to that converted in the second stage being regulated to 0.5-20:1. The 1-alkene is e.g. ethylene or a higher alkene.

    33.
    发明专利
    未知

    公开(公告)号：DE3936856A1

    公开(公告)日：1991-05-08

    申请号：DE3936856

    申请日：1989-11-06

    Applicant: BASF AG

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

    IPC: C08F4/60 ,  C08F4/642 ,  C08F4/646 ,  C08F4/649 ,  C08F4/651 ,  C08F4/654 ,  C08F10/00

    Abstract: Catalyst systems of the Ziegler-Natta catalyst type, containing, as active constituents, a) a titanium-containing solid component which contains titanium, magnesium, halogen and a carboxylic acid ester, and, as cocatalyst, b) an aluminium compound and c) optionally further electron-donor compounds, characterised in that they contain in the solid component, as the carboxylic acid ester, a diester of a carboxylic acid of the formula Ia or Ib in which R , R , R and R are identical or different and are hydrogen, C1-C15-alkyl, C7-C15-alkylaryl or 5- to 7-membered cycloalkyl, which may itself carry C1- to C10-alkyl groups. These catalyst systems are particularly suitable for the preparation of polypropylene and copolymers of propylene with minor amounts of other alpha , beta -unsaturated olefinic compounds having 2 to 12 carbon atoms.

    Process for the preparation of homopolymers and copolymers of propene by means of a Ziegler-Natta catalyst system
    35.
    发明专利
    Process for the preparation of homopolymers and copolymers of propene by means of a Ziegler-Natta catalyst system 未知

    公开(公告)号：DE3830195A1

    公开(公告)日：1990-03-15

    申请号：DE3830195

    申请日：1988-09-06

    Applicant: BASF AG

    Inventor： ZOLK RALF DR ,  KERTH JUERGEN DR ,  HEMMERICH RAINER DR ,  SCHWEIER GUENTHER DR ,  MUELLER-MALL RUDOLF DR

    IPC: C08F4/642 ,  C08F4/649 ,  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 based on a finely divided, shape-providing silica gel and containing magnesium, chlorine and a benzenecarboxylic acid derivative in addition to titanium, (2) an aluminium component and (3) a silane component, characterised in that a titanium component (1) is used which is obtained by (1.1) first (I) preparing a support material from (Ia) a silica gel, (Ib) an organomagnesium compound and (Ic) a gaseous chlorinating agent by (1.1.1) at first reacting (Ia) with (Ib), (1.1.2) then passing (Ic) into the product from (1.1.1) and isolating (I), (1.2) then preparing a solid-phase intermediate from (I), (II) an alkanol, (III) titanium tetrachloride and (IV) a phthalic acid derivative by (1.2.1) first reacting (I) with (II), (1.2.2) subsequently introducing (III) into the product from (1.2.1), with the proviso that (IV) is also introduced during (1.2.1) or (1.2.2), (1.3) then extracting the solid product from (1.2) with titanium tetrachloride or a mixture of titanium tetrachloride and ethylbenzene, and (1.4) finally washing the solid product from (1.3) with a liquid hydrocarbon.

    36.
    发明专利
    未知

    公开(公告)号：ES2136671T3

    公开(公告)日：1999-12-01

    申请号：ES94103493

    申请日：1994-03-08

    Applicant: BASF AG

    Inventor： MARCZINKE BERND LOTHAR DR ,  KERTH JUERGEN DR ,  MUELLER PATRIK DR ,  BAUMGARTL HORST DR ,  ITTEMANN PETER DR

    IPC: C08F8/46 ,  C08F255/00 ,  C08F255/02 ,  C09J151/06 ,  D01F6/30

    Abstract: The present invention relates to propylene copolymers grafted to alpha , beta -ethylenic unsaturated carboxylic acids or carboxylic acid derivatives, comprising ai) a random propylene copolymer (A1) containing from 0.1 to 15 % by weight of copolymerised C2- to C10-alk-1-enes, or a2) a propylene copolymer (A2), a random propylene copolymer (I) containing from 0.1 to 15% by weight of copolymerised C2- to C10-alk-1-enes and a random propylene copolymer (II) containing from 15 to 80% by weight of copolymerised C2- to C10-alk-1-enes, or a3) a propylene copolymer (A3) comprising a propylene homopolymer (III) and a random propylene copolymer (IV) containing from 15 to 80% by weight of copolymerised C2- to C10-alk-1-enes, obtainable by reacting the monomer to be grafted with the propylene copolymer (A1), (A2) or (A3) at pressures of from 1 to 300 bar, where, in the presence of from 0.005 to 0.5% by weight of an initiator which decomposes to give free radicals, from 0.01 to 1.0% by weight of the monomer to be grafted, where both concentrations are based on the propylene copolymer, is mixed with the molten propylene copolymer, and the grafting reaction is carried out at from 200 to 350@C.

    37.
    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.

Patent Agency Ranking