Patents by Inventor Arthur Steinmetz

Arthur Steinmetz 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).

  • Process for the preparation of a 2-alkylphenol
    Patent number: 4419529
    Abstract: A 2-alkylphenol is prepared by reduction of a 2-acylphenol in the presence of a metallic catalyst. The reaction is carried out at a temperature of 80.degree. to 200.degree. C. and under a pressure of 10 to 100 bars, and a base metal, in particular copper, is used as a catalyst. It is particularly advantageous to use the catalyst in combination with a support. The hydrogenation of the acylphenol is advantageously carried out in the presence of an inert solvent. The process can be carried out continuously or discontinuously. The alkylphenols obtained are suitable for use in the synthesis of active substances having biocidal properties.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: December 6, 1983
    Assignee: Riedel-de Haen Aktiengesellschaft
    Inventor: Arthur Steinmetz