Patents by Inventor Markus Hadley

Markus Hadley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for stripping polymer polyols
    Patent number: 7790804
    Abstract: The invention provides a process for the purification of polymer polyols that ensures a reduction of acrylonitrile, styrene as well as the residual amounts of optionally used chain regulator, and of occurring recombination products of the initiator when azo initiators are used, to levels of <25 ppm of acrylonitrile, <50 ppm styrene, <50 ppm chain regulator and <280 ppm of recombination products by stripping using packed columns.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: September 7, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Michael Brockelt, Ludwig Deibele, Manfred Dietrich, Markus Hadley, Jan Thomas Leu, Guido Naberfeld, Ralf Dohrn
  • Process for stripping polymer polyols
    Publication number: 20080033139
    Abstract: The invention relates to a process for the purification of polymer polyols by stripping using packed columns.
    Type: Application
    Filed: June 22, 2007
    Publication date: February 7, 2008
    Inventors: Michael Brockelt, Ludwig Deibele, Manfred Dietrich, Markus Hadley, Jan Leu, Guido Naberfeld, Ralf Dohrn
  • Method and continous production of a solution of rubbers in vinyl-aromatic monomers
    Publication number: 20030083450
    Abstract: Impact modified styrene polymers can be prepared by a continuous process for the production of a solution of rubber in vinyl aromatic monomers.
    Type: Application
    Filed: October 11, 2002
    Publication date: May 1, 2003
    Inventors: Gisbert Michels, Ludwig Deibele, Markus Hadley, Torsten Hauschild, Ralph Ostarek