Patents by Inventor Dirk Borchers

Dirk Borchers 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 3-(2'-oxyethyl)dihydro-2(3H)furanones
    Patent number: 5350863
    Abstract: A process for preparing 3-(2'-oxyethyl)dihydro-2(3H)furanones of the general formula I ##STR1## where R.sup.1 is hydrogen or acetyl, by reacting ethylene oxide with acetoacetic acid esters of the general formula II ##STR2## where R.sup.2 is C.sub.1 -C.sub.4 -alkyl, which comprises carrying out the reaction in alcoholic solutions in the presence of alkali metal alkoxides at from 20.degree. to 100.degree. C. and from 1 to 20 bar, is described.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: September 27, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Kuekenhoehner, Norbert Goetz, Rolf Fischer, Werner Schnurr, Dirk Borchers