Patents by Inventor Franz Samlitschka

Franz Samlitschka 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 the recovery of ?-caprolactam from extract water
    Patent number: 9562008
    Abstract: A process for the recovery of ?-caprolactam from extract water of polycaprolactam obtained by hydrolytic polymerization, wherein the extract water is concentrated, subsequently contained oligomers are depolymerized, non-depolymerizable impurities are separated, water and low-boiling impurities are removed, wherein for adjusting the purity of the recovered ?-caprolactam and the energy consumption used for the process a part of the product is removed from the process as intermediate products.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 7, 2017
    Assignee: Technip Zimmer GmbH
    Inventors: Andreas Bormann, Manfred Albrecht, Franz Samlitschka
  • PROCESS FOR THE RECOVERY OF EPSILON-CAPROLACTAM FROM EXTRACT WATER
    Publication number: 20160221943
    Abstract: A process for the recovery of ?-caprolactam from extract water of polycaprolactam obtained by hydrolytic polymerization, wherein the extract water is concentrated, subsequently contained oligomers are depolymerized, non-depolymerizable impurities are separated, water and low-boiling impurities are removed, wherein for adjusting the purity of the recovered ?-caprolactam and the energy consumption used for the process a part of the product is removed from the process as intermediate products.
    Type: Application
    Filed: July 7, 2014
    Publication date: August 4, 2016
    Inventors: Andreas Bormann, Manfred Albrecht, Franz Samlitschka
  • Continuous process for the extraction of polyamide-6
    Patent number: 8541540
    Abstract: A continuous process is disclosed for the extraction of monomeric caprolactam and its oligomers as the raw polymer product obtained in the polymerization of polyamide-6 in which no fresh water, but processing water or previously used extraction water is used for the granulation.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: September 24, 2013
    Assignee: Lurgi Zimmer GmbH
    Inventors: Klaus Kirsten, Manfred Albrecht, Franz Samlitschka
  • CONTINUOUS PROCESS FOR THE EXTRACTION OF POLYAMIDE-6
    Publication number: 20100048860
    Abstract: A continuous process is disclosed for the extraction of monomeric caprolactam and its oligomers as the raw polymer product obtained in the polymerization of polyamide-6 in which no fresh water, but processing water or previously used extraction water is used for the granulation.
    Type: Application
    Filed: August 18, 2009
    Publication date: February 25, 2010
    Inventors: Klaus Kirsten, Manfred Albrecht, Franz Samlitschka