公开(公告)号：DE4203277A1

公开(公告)日：1993-08-12

申请号：DE4203277

申请日：1992-02-06

Applicant: BASF AG

Inventor： KEMPTER FRITZ ERDMANN DR ,  NIESSNER MANFRED DR ,  DIENER RALPH DR ,  THIELE HEINO DR ,  WEISS WOLFRAM DR ,  RENZ HANS DR

IPC: B01J19/18 ,  C08F2/00

Abstract: The continuous polymerisation of vinyl monomers by formation of vinyl polymers (I) with a mol. wt. of 1000-20,000 is claimed. The polymerisation is carried out at 110-270 deg. C in a ring slit (slit width 0.5-1.00 mm) that is bounded on the inner side by a rotor. Also claimed is the use of (I) as binding agents for paints, protective coatings, paper coating materials and printing inks. The reaction temp. is 150-270 deg. C and the polymer dispersivity (Mw/Mn) of (I) is less than 3.5. A portion of the volumetric flow is recirculated through the ring slit such that the recycle ratio of recirculated volumetric flow to throughput is 2-35. The rotor promotes reacton by thorough mixing and has a tangential avelocity of 0.5-2 m/s. The reaction is carried out in 0-40% of a solvent (w.r.t. monomer). The mixt. of monomers comprises 60-100 wt.% (meth)acrylic acid esters. Polymerisation initiator is added in a molar ratio of 0.0005:1 to 0.1:1 (w.r.t. monomer).

公开(公告)号：DE19631365A1

公开(公告)日：1998-02-05

申请号：DE19631365

申请日：1996-08-02

Applicant: BASF AG

Inventor： WUENSCH JOSEF DR ,  SCHIESL MICHAEL ,  DIENER RALPH DR

IPC: C08F4/642 ,  B01J19/20 ,  B01J19/24 ,  C08F4/659 ,  C08F4/6592 ,  C08F12/04 ,  C08F112/00 ,  C08F112/08 ,  C08F12/00

Abstract: A process for the production of an essentially syndiotactic and partially crystalline polymer (I) containing vinyl aromatic monomers is claimed. (I) is prepared form a reaction mixture containing vinyl aromatic compounds (II), metallocene complexes (III) and one or co-catalysts (IV) consisting of strong, neutral Lewis acid or Bronsted acid cations. The components are mixed prior to addition to the reactor. An apparatus is also claimed comprising a reservoir to contain a mixture of (II) and (IV), a reservoir to contain (III) plus means to dose the contents of the 2 reservoirs to a pre-mixer that is connected to the reactor vessel.

公开(公告)号：DE19624607A1

公开(公告)日：1998-01-02

申请号：DE19624607

申请日：1996-06-20

Applicant: BASF AG

Inventor： BREITENBACH JOERG DR ,  ROSENBERG JOERG DR ,  NEUMANN JOERG DR ,  ZEIDLER JUERGEN DR ,  SIMON DIRK DR ,  DIENER RALPH DR

IPC: A61K31/19 ,  A61K9/16 ,  A61K31/00 ,  B01J19/00 ,  C07C51/41 ,  C07C57/30 ,  C07C229/26 ,  A61K31/195

Abstract: Preparation of a salt of a pharmaceutically active carboxylic acid compound comprises reacting the acid in an extruder with ≥ 1 stoichiometric equivalent of a base in melt form.