Patents by Inventor Alfred Oftring

Alfred Oftring 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 N-.alpha.-alkoxyethylformamides
    Patent number: 4670591
    Abstract: N-.alpha.-alkoxyethylformamides of the formula ##STR1## where R is C.sub.1 -C.sub.18 -alkyl, are prepared by reacting a vinyl ether of the formulaCH.sub.2 .dbd.CH--OR (II),where R has the meaning stated in the formula I, with formamide in the presence of an acidic or basic catalyst at from -10.degree. to 150.degree. C.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: June 2, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Alfred Oftring, Erwin Hahn, Rolf Fikentscher
  • Preparation of 2-(hydroxymethyl)-acrylonitrile and 2-(hydroxymethyl)-acrylates
    Patent number: 4654432
    Abstract: 2-(hydroxymethyl)-acrylonitrile and 2-(hydroxymethyl)-acrylates of the formula ##STR1## where X is --CN or ##STR2## and R is unsubstituted or substituted alkyl, are prepared by reacting acrylonitrile or an acrylate with hydrated formaldehyde or a hemiacetal of formaldehyde in the presence of a tertiary amine as a catalyst.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: March 31, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fikentscher, Erwin Hahn, Alexander Kud, Alfred Oftring
  • 2-(1-hydroxycarbalkoxymethyl)-acrylonitriles and 2-(1-hydroxycarbalkoxymethyl)-acrylates and their preparation
    Patent number: 4652669
    Abstract: 2-(1-Hydroxycarbalkoxymethyl)-acrylonitriles and 2-(1-hydroxycarbalkoxymethyl)-acrylates are prepared by a process in which an acrylonitrile or an acrylate is reacted with a glyoxylate in an aqueous medium at a pH greater than or equal to 6, in the presence of a tertiary amine as a catalyst.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: March 24, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fikentscher, Erwin Hahn, Alexander Kud, Alfred Oftring