Patents by Inventor Simon A. J. van Langen

Simon A. J. van Langen 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 alkyl propionates
    Patent number: 5041623
    Abstract: A continuous process for the preparation of an alkyl propionate, which comprises reacting an alkanol in a liquid phase with ethene in a reaction vessel in the presence of a carbonylation catalyst, and removing alkyl propionate from the reaction vessel in a stream of vapor.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: August 20, 1991
    Assignee: Shell Oil Company
    Inventors: Willem G. Reman, Gerben B. J. de Boer, Simon A. J. van Langen, Antonie Nahuijsen
  • Process for the carbonylation of olefinically unsaturated compounds with a palladium catalyst
    Patent number: 4786443
    Abstract: Process for the carbonylation of olefins with CO in the presence of water, an alcohol and/or a carboxylic acid in the presence of a catalyst composition based on(a) a Pd compound,(b) a protonic acid, and(c) a phosphine PR.sup.1 R.sup.2 R.sup.3 in which R.sup.1 is a heterocyclic ring having 5-6 atoms and containing .gtoreq.1 hetero N atom and R.sup.2 and R.sup.3 are R.sup.1 or an aryl group.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: November 22, 1988
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Simon A. J. van Langen, Leonardus Petrus