Patents by Inventor NICOLAAS HAASEN

NICOLAAS HAASEN 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 recovering caprolactam from aqueous caprolactam product using situ prepared alkali amino caproate
    Publication number: 20050011744
    Abstract: The invention relates to a continuous process for recovering caprolactam from aqueous caprolactam product, said aqueous caprolactam product comprising (i) caprolactam, (ii) impurities, and (iii) water, said process comprising: adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolactam; reacting at least part of the added alkali hydroxide to form alkali amino caproate, to obtain a caproate-enriched caprolactam product; and distilling the caproate-enriched caprolactam product at reduced pressure.
    Type: Application
    Filed: August 23, 2002
    Publication date: January 20, 2005
    Inventors: Arnold Jetten, Nicolaas Haasen, Gerardus Hangx
  • PROCESS FOR THE SEPARATION OF A KETOXIME OR ALDOXIME FROM AN AMIDE
    Publication number: 20020005343
    Abstract: The invention relates to a process for the separation of a ketoxime or aldoxime from a ketoxime- or aldoxime-containing amide mixture in which the ketoxime or aldoxime is separated from the amide mixture by means of distillation.
    Type: Application
    Filed: January 7, 1999
    Publication date: January 17, 2002
    Inventors: YVONNE FRENTZEN, NICOLAAS HAASEN, HENRICUS F.W. WOLTERS