Patents Assigned to Huels Atiengesellschaft
  • Patent number: 5945536
    Abstract: N-monosubstituted 4-aminopiperidine is prepared by a process comprising, in a single stage, continuously passing a 4-oxopiperidine and a primary amine over a metal hydrogenation catalyst under a hydrogen partial pressure of 1-500 bar at a LHSV of up to 1 hr.sup.-1.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: August 31, 1999
    Assignee: Huels Atiengesellschaft
    Inventors: Udo Jegelka, Guenter Kreilkamp