Patents by Inventor Rolf Gleiter

Rolf Gleiter 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 producing 2-alkynoic acid esters
    Patent number: 6153786
    Abstract: A process for preparing 2-alkynoic esters of the general formula (I),R.sup.1 --O--CO--C.tbd.C--R.sup.2 (I)in which R.sup.1 and R.sup.2 independently are C.sub.1-16 -alkyl, C.sub.6-12 -aryl, C.sub.7-12 -aralkyl or C.sub.7-12 -alkylaryl radicals, and R.sup.2 can also be hydrogen,by reacting a chloroformate of the general formula (II),R.sup.1 --O--CO--Cl (II)with an alkyne of the general formula (III),R.sup.2 --C.tbd.C--H (III)is carried out in the presence of a Pt and/or Pd complex which has phosphine ligands and/or phosphite ligands as catalyst.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: November 28, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Jochem Henkelmann, Thomas Preiss, Arnd Bottcher, Rolf Gleiter, Christel de Backer