中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

30 records (took 0.022 seconds)

    Characterisation of partially crystalline polymers, to establish suitability for orientation
    21.
    发明专利
    Characterisation of partially crystalline polymers, to establish suitability for orientation 未知

    公开(公告)号：DE19813400A1

    公开(公告)日：1999-09-30

    申请号：DE19813400

    申请日：1998-03-26

    Applicant: BASF AG

    Inventor： RAUSCHENBERGER VOLKER ,  HINGMANN ROLAND ,  LANGHAUSER FRANZ ,  SCHOENE WERNER

    IPC: G01N11/00 ,  G01N33/44 ,  C08J5/18

    Abstract: Rheological properties determine the suitability for biaxial orientation. The suitability of a partially crystalline polymers, especially a polypropylene polymer, for the preparation of biaxially oriented foils and films can be decided by determination of its rheological properties. The method involves determination of the viscosity change with temperature in the region of the melting point, definition of a characteristic quantity in such a way that its value is inversely related to the viscosity change with temperature, determination of the extent of strain hardening on partial melting of the polymer, for which a characteristic quantity is so defined that its value is the greater the more marked the strain hardening. Both characteristic quantities when multiplied together are coupled to an end characteristic quantity, so that the suitability of the partially crystalline polymer is the better the larger the value of the end characteristic quantity.

    23.
    发明专利
    未知

    公开(公告)号：ES2156389T3

    公开(公告)日：2001-06-16

    申请号：ES97929194

    申请日：1997-06-17

    Applicant: BASF AG

    Inventor： BIDELL WOLFGANG ,  LANGHAUSER FRANZ ,  MOLL ULRICH ,  MC KENZIE IAN DAVID ,  FISCHER DAVID ,  HINGMANN ROLAND

    IPC: C08F4/642 ,  C08F4/16 ,  C08F4/602 ,  C08F4/619 ,  C08F4/6192 ,  C08F10/00 ,  C08F110/06

    Abstract: A process for preparing a supported transition metal catalyst comprising a particulate organic or inorganic support material, a transition metal complex and a compound capable of forming metallocenium ions comprises the following process steps:a) contacting a solution of a compound capable of forming metallocenium ions with a second solvent in which this compound is only sparingly soluble, in the presence of the support material,b) removing at least part of the solvent from the support material andc) contacting a solution of a mixture of a compound capable of forming metallocenium ions and a transition metal complex with a second solvent in which this mixture is only sparingly soluble, in the presence of the support material obtained as described in a) and b).

    26.
    发明专利
    未知

    公开(公告)号：DE19813399A1

    公开(公告)日：1999-09-30

    申请号：DE19813399

    申请日：1998-03-26

    Applicant: BASF AG

    Inventor： LANGHAUSER FRANZ ,  APPLEYARD DAVID ,  HORTON MURRAY ,  HINGMANN ROLAND ,  SCHWEIER GUENTHER ,  RAUSCHENBERGER VOLKER ,  HENNIG INGOLF ,  LILGE DIETER ,  SCHOENE WERNER ,  KERSTING MEINOLF

    IPC: C08F2/34 ,  C08F4/02 ,  C08F4/658 ,  C08F210/06 ,  C08F210/16 ,  D01F6/30

    Abstract: A random copolymer (I) of propylene with other 2-10 C 1-alkenes comprises 0.7-1.4 wt.% ethylene comonomer or 0.7-3.0 wt.% 4-10 C 1-alkene. (I) has a solubility in cold xylene of 1.0-2.5 wt.% or 0.75-2.0 wt.% when the comonomer is ethylene or a 4-10C 1-alkene respectively. Independent claims are included for: (i) a process for the preparation of (I) by the gas phase polymerisation of propylene and a 2-10 C 1-alkene at 50-100 degrees C and 15-40 bar in the presence of a Ziegler-Natta catalyst containing: (A) a titanium containing solid component containing at least a halogen containing magnesium compound and an electron donor; (B) an aluminum compound; and (C) at least a further electron donor compound. The ratio of partial pressure of propylene to comonomer is 400:1-15:1 and the molar ratio of (B) to (C) is 20:1-2:1; and (ii) film, fiber or molded articles containing (I).

    Catalyst systems of the Ziegler-Natta type
    30.
    发明专利
    Catalyst systems of the Ziegler-Natta type 未知

    公开(公告)号：AU2477397A

    公开(公告)日：1997-12-18

    申请号：AU2477397

    申请日：1997-06-10

    Applicant: BASF AG

    Inventor： HUFFER STEPHAN ,  BIDELL WOLFGANG ,  MULLER PATRIK ,  MOLL ULRICH ,  HINGMANN ROLAND ,  SCHWEIER GUNTHER

    IPC: C08F4/654 ,  C08F4/02 ,  C08F4/646 ,  C08F4/658 ,  C08F10/00 ,  C08F110/06 ,  C08F4/643 ,  C08F4/52 ,  C08F10/06

    Abstract: Ziegler-Natta type catalyst system (ZNC), containing (a) a titanium-based solid component containing compounds of Ti and magnesium, a halogen, an inorganic oxide support (IOS) and a carboxylate ester as electron donor, (b) an aluminium compound and (c) optionally another electron donor, in which the oxide (IOS) has a pH of 1-6, an average particle diameter of 5-200 microns and an average primary particle diameter of 1-20 mu m, and contains pores or channels with an average diameter of 0.1-20 mu m in amounts of 5-30 vol%. Also claimed is (i) a process for the production of ZNC by interacting components (a), (b) and (c) together at 0-150 degrees C and 1-100 bar; (ii) a process for the production of polymers of 2-20C alk-1-enes by polymerisation of the alkene (preferably propylene) and optionally other comonomers at 20-150 degrees C and 1-100 bar in presence of (ZNC); (iii) polymers of propylene obtained by this process.

Patent Agency Ranking