Patents by Inventor Frank Peter Woerner

Frank Peter Woerner 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).

  • Storage-stable, liquid polyisocyanates possessing carbodiimide groups, and process for their manufacture
    Patent number: 4120884
    Abstract: Storage-stable, liquid, only slightly colored polyisocyanates possessing carbodiimide groups and having an isocyanate content of from about 25 to 35% by weight, based on total weight; these products are obtained by condensing polyisocyanates in the presence of phospholines, phospholidines and/or their oxides, and stopping the condensation and stabilizing the condensation products with the Lewis acids, aromatic carboxylic acid halides, aromatic sulfonic acid esters and/or alkyl sulfates.
    Type: Grant
    Filed: January 28, 1977
    Date of Patent: October 17, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Peter Woerner, Peter T. Kan, Georg Falkenstein