Patents by Inventor Jan W. G. VAN DEN Hurk

Jan W. G. VAN DEN Hurk 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).

  • Method for the preparation of alkyl tin halides
    Patent number: 4049689
    Abstract: In the process for the preparation of alkyl tin halides by means of direct conversion of tin with aliphatic halides, the alkyl halide is fed in such a way gradually to the gas space over the further reaction components that there is an overpressure of no more than a few cms of mercury. The reaction is carried out in the presence of a liquid acid amide in quantities of 0.65 to 2.3 mol per gramatom of tin and in the presence of catalytic amounts of iodine and/or iodide at raised temperatures. The reaction is promoted under the influence of ultraviolet irradiation and by the addition of a catalyst of the type promoting free radial initiation reactions. SUBACKGROUND OF THE INVENTIONThe invention relates to the preparation of alkyl tin halides by means of direct conversion of tin with aliphatic halides under the influence of liquid compounds of the acid amide type and of iodine and/or iodide as a catalyst.
    Type: Grant
    Filed: November 21, 1975
    Date of Patent: September 20, 1977
    Assignee: Commer S.r.l.
    Inventors: Francois Verbeek, Eric J. Bulten, Jan W. G. VAN DEN Hurk