Patents Represented by Law Firm Baker and Botts, L.L.P
  • Process for the regeneration of an aqueous process liquid of the amine-oxide process
    Patent number: 5904818
    Abstract: The invention is concerned with a process for the production of a solution of N-methylmorpholine-N-oxide in water, characterized by the following steps:(a) providing an aqueous solution containing N-methylmorpholine and morpholine and exhibiting a pH value of from 6.0 to 9.0, thereafter(b) treating said aqueous solution with a peroxidic oxidant to oxidize N-methylmorpholine to N-methylmorpholine-N-oxide.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: May 18, 1999
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Wolfram Kalt, Dieter Eichinger, Bruno Mangeng, Heinrich Firgo