Patents by Inventor Klaus Ebel

Klaus Ebel 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).

  • Preparation of N,N',N"-tris-(2-hydroxypropyl)-melamine
    Patent number: 4618676
    Abstract: N,N',N"-tris-(2-hydroxypropyl)-melamine is prepared by reacting melamine with isopropanolamine in the presence of an acidic catalyst, by a process in which the reaction is carried out at from 120.degree. to 300.degree. C. and using an excess of isopropanolamine, and the molar ratio of free isopropanolamine to the sum of free and converted melamine does not fall below 4:1 during the entire reaction time.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: October 21, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Ebel, Wolfgang Reuther