Patents Assigned to Bayer MaterialSceince AG
  • Process for the preparation of diisocyanates
    Patent number: 6930199
    Abstract: The invention relates to a process for the preparation of isocyanates in the gas phase, in which the possibilities for back-mixing and byproduct formation are reduced by improving the mixing of the starting materials in a tubular reactor.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: August 16, 2005
    Assignee: Bayer MaterialSceince AG
    Inventors: Jürgen Meyn, Herbert Stutz