中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

98 records (took 0.025 seconds)

    31.
    发明专利
    未知

    公开(公告)号：DE3681273D1

    公开(公告)日：1991-10-10

    申请号：DE3681273

    申请日：1986-12-19

    Applicant: BASF AG

    Inventor： KERTH JUERGEN ,  VOGT HEINZ

    IPC: C08F4/46 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F10/02

    Abstract: Finely-divided ethene homopolymers or ethene copolymers with subordinated amts. of 3-8C alpha-monoalkene are prepd. by polymerising the monomer(s) at 30-150 deg.C and 1-200 bar, using a Ziegler catalyst system contg. (1) A Ti-contg. catalyst component, obtd. as ppte. on pptn. in an organic liq. by introducing and contacting, with strong agitation: (1.1) a 0.1-10 molar soln. of TiCl4 in a liq. 5-10C hydrocarbon of satd. aliphatic and/or aromatic nature, (1.2) a 0.1-10 molar soln. of an organic Al cpd. having formula RnAlCl3-n, n=1.5-3; R=1-12C alkyl in a liq. 5-10C hydrocarbon of satd. aliphatic and/or aromatic nature as well as (1.3) a 2-8C alpha-mono alkene, and (2) a tri- 1-12C alkyl Al catalyst component, provided that the atomic ratio Ti from component (1) to the Al from component (2) is 1:1 to 1:200. The novelty consists in using a Ti contg. catalyst component (1) which is pptd. at -30 to +30 deg.C, in an organic liq. having viscosity 1.5-30 sq.m/sec. at the pptn. temp. The liq. consists of (a) a liq. 5-10C hydrocarbon of satd. aliphatic and/or aromatic nature as well as (b) small amts. of a polymer of a 2-6C alpha-mono-alkene dissolved in (a). (i) 2-20 l organic liq., 0.5-5 g.mol. organic Al cpd. and 5-500 g mol alpha-mono-alkene are charged per g.mol TiCl4. (ii) 0.002-0.15 mol. units /min. per mol. unit of the total TiCl4 charged are pptd. and 0.002-1 mol. units/min. alpha-mono-alkene are introduced into the pptn. system.

    32.
    发明专利
    未知

    公开(公告)号：BR9005592A

    公开(公告)日：1991-09-17

    申请号：BR9005592

    申请日：1990-11-05

    Applicant: BASF AG

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

    IPC: C08F10/06 ,  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, as the carboxylic acid ester in the solid component a), an ester of a benzophenone-2-carboxylic acid of the formula I in which R is a hydrogen atom, a C1-C15-alkyl group or a halogen atom. 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.

    ZIEGLER-NATTA-TYPE CATALYST SYSTEMS
    33.
    发明专利
    ZIEGLER-NATTA-TYPE CATALYST SYSTEMS 未知

    公开(公告)号：AU6576890A

    公开(公告)日：1991-05-09

    申请号：AU6576890

    申请日：1990-11-05

    Applicant: BASF AG

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

    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.

    36.
    发明专利
    未知

    公开(公告)号：AT208786T

    公开(公告)日：2001-11-15

    申请号：AT96924832

    申请日：1996-07-01

    Applicant: BASF AG

    Inventor： FISCHER DAVID ,  LANGHAUSER FRANZ ,  STUERMER RAINER ,  KERTH JUERGEN ,  SCHWEIER GUENTHER ,  BRINTZINGER HANS-HERBERT ,  SCHMIDT KATRIN

    IPC: C07F17/00

    Abstract: PCT No. PCT/EP96/02869 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jan. 7, 1996 PCT Pub. No. WO97/03081 PCT Pub. Date Jan. 30, 1997In a process for converting the achiral meso form or the racemate of an ansa-metallocene complex or a mixture thereof into one of its enantiomers, the conversion is carried out photochemically in the presence of an enantiomerically pure auxiliary reagent.

    PREPARATION OF HOMOPOLYMERS AND COPOLYMERS OF PROPENE USING A ZIEGLER-NATTA CATALYST SYSTEM
    39.
    发明专利
    PREPARATION OF HOMOPOLYMERS AND COPOLYMERS OF PROPENE USING A ZIEGLER-NATTA CATALYST SYSTEM 未知

    公开(公告)号：CA1339183C

    公开(公告)日：1997-07-29

    申请号：CA575999

    申请日：1988-08-30

    Applicant: BASF AG

    Inventor： KERTH JUERGEN ,  ZOLK RALF ,  HEMMERICH RAINER

    IPC: C08F4/58 ,  C08F4/60 ,  C08F4/64 ,  C08F4/658 ,  C08F10/00 ,  C08F10/06 ,  C08F4/646 ,  C08F4/649

    Abstract: Polymers of propene are prepared using a Ziegler-Natta catalyst system consisting of (1) a titanium component which is based on a finely divided, shape-imparting silica gel and contains, in addition to titanium, magnesium, chlorine and a benzenecarboxylic acid derivative, (2) an aluminum component and (3) a silane component. In this process, a titanium component (1) is used which is obtained by a method in which (1.1) first (I) a carrier is prepared from (Ia) a silica gel, (Ib) an alkanol, (Ic) an organomagnesium compound and (Id) a gaseous chlorinating agent by a procedure in which (1.1.1) first (Ia) is reacted with (Ib), (1.1.2) then the mixture obtained in (1.1.1) is combined with (Ic), (1.1.3) then (Id) is passed into the mixture obtained in (1.1.2) and (I) is isolated, (1.2) thereafter a solid-phase intermediate is prepared from (I), (II) an alkanol, (III) titanium tetrachloride and (IV) a phthalic acid derivative by a procedure in which (1.2.1) first (I) is reacted with (II), (1.2.2) then (III) is introduced into the mixture resulting from (1.2.1), with the proviso that (IV) is also introduced during (1.2.1) and/or (1.2.2), (1.3) then the solid-phase product resulting from (1.2) is extracted with titanium tetrachloride and (1.4) finally the solid-phase product resulting from (1.3) is washed with a liquid hydrocarbon.

Patent Agency Ranking