Patents by Inventor Juergen Siefert

Juergen Siefert 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).

  • Durable Flame Retardant Finish for Cellulosic Materials
    Publication number: 20070270616
    Abstract: A process is provided for reacting dichloromonophenyl phosphate and monochlorodiphenyl phosphate with aliphatic alcohol in the presence of a Lewis acid catalyst and absence of solvent, at a temperature above 60 to 200° C. and pressure of 0.001 to 1.1 bara, and sparging the reaction mixture with an inert carrier gas if the pressure is above 0.67 bars. Mixtures of monoalkyl biphenyl phosphates and dialkyl monophenyl phosphates and use of such mixtures as a plasticizer and/or flame retardant, are also provided.
    Type: Application
    Filed: October 21, 2004
    Publication date: November 22, 2007
    Applicant: SUPRESTA LLC
    Inventors: Lambertus De Kleine, Juergen Siefert