Patents by Inventor Serve Y. Delavarenne

Serve Y. Delavarenne 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).

  • Patent number: 4159991
    Abstract: .alpha.-Acyloxy-N,N'-diacylmalonamides of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are the same or different and are hydrogen, straight chain or branched alkyl radicals having from one to eleven carbon atoms, or hydrocarbon radicals with six to twelve carbon atoms and comprising at least one aromatic ring, are novel compounds prepared by the action of a mixture of carboxylic acids R.sub.3 COOH and R.sub.4 COOH upon an .alpha.-acyloxymalononitrile, R.sub.1 COO--C(CN).sub.2 --R.sub.2, in the presence of an acid catalyst and are useful as intermediates in organic synthesis and low temperature activators in bleaching or scouring compositions.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: July 3, 1979
    Assignee: Produits Chimiques Ugine Kuhlmann
    Inventors: Bernard Dubreux, Serve Y. Delavarenne, Jean-Pierre Schirmann