Patents Assigned to BASF Akiengesellschaft
  • Preparation of pure (meth)acrylic acid and (meth)acrylates
    Publication number: 20030040570
    Abstract: Pure (meth)acrylic acid and lower (meth)acrylates are prepared from crude (meth)acrylic acid by a process in which I) crude (meth)acrylic acid is separated by crystallization in at least one crystal batch A and at least one mother liquor B and II) at least a part of the crystal batch A is removed as pure (meth)acrylic acid and at least a part of the mother liquor B is used for the preparation of lower (meth)acrylates by esterifying (meth)acrylic acid with the corresponding alcohols in the presence of an acidic catalyst.
    Type: Application
    Filed: July 31, 2002
    Publication date: February 27, 2003
    Applicant: BASF Akiengesellschaft
    Inventors: Gerhard Nestler, Juergen Schroeder
  • Priparation of copolymers of carbon monoxide and an olefinically unsaturated compound in an aqueous medium
    Publication number: 20020198359
    Abstract: In a process for the metal-catalyzed preparation of copolymers of carbon monoxide and an olefinically unsaturated compound having from 2 to 20 carbon atoms in an aqueous medium, the copolymerization is carried out in the presence of a water-soluble macromolecular host compound which has a hydrophobic cavity and a hydrophilic shell.
    Type: Application
    Filed: April 23, 2002
    Publication date: December 26, 2002
    Applicant: BASF Akiengesellschaft
    Inventors: Markus Schmid, Reinhold J. Leyrer, Mubarik Mahmood Chowdhry, Marc Oliver Kristen
  • Method for the production of polymers from n-vinyl compounds
    Patent number: 6369165
    Abstract: A process for preparing polymers of N-vinyl compounds comprises polymerizing the vinyl compounds in the presence of free radicals of the formula I where Q is NR2 or S and T is CR3R4 or S and R1, R2, R3 and R4 can be identical or different and are, independently of one another, hydrogen, C1-C20-alkyl or C6-C18-aryl.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: April 9, 2002
    Assignee: BASF Akiengesellschaft & Max-Planck-Gesellschaft
    Inventors: Roman Benedikt Raether, Wolfgang Paulus, Frank Braun, Klaus Müllen, Markus Klapper, Marco Steenbock
  • Weathering-stable, radiation-curable polyurethanes
    Publication number: 20010029272
    Abstract: A water-dispersible, radiation-curable polyurethane composed essentially of
    Type: Application
    Filed: January 3, 2001
    Publication date: October 11, 2001
    Applicant: BASF Akiengesellschaft
    Inventors: Reinhold Schwalm, Frank Vollinger, Klaus Menzel, Wolfgang Reich, Erich Beck, Thomas Jaworek