Patents by Inventor Walter Goetze

Walter Goetze 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 alkenyl-lactic acid esters and the novel esters obtained
    Patent number: 4596889
    Abstract: A process for the preparation of an alkenyl-lactic acid ester by reaction of a cyanohydrin with an alcohol in the presence of hydrogen chloride, followed by hydrolysis. The compounds obtained may be used for the preparation of alkaloids and crop protection agents, and as monomers for copolymerization.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: June 24, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Kroener, Walter Goetze
  • Preparation of .alpha.-hydroxy-.beta.,.beta.-dimethyl-.gamma.-butyrolactone
    Patent number: 4200582
    Abstract: A process for the preparation of .alpha.-hydroxy-.beta.,.beta.-dimethyl-.gamma.-butyrolactone (pantolactone) by condensation of formaldehyde with isobutyraldehyde to give hydroxypivalaldehyde, conversion of the latter to its cyanohydrin, and subsequent acid hydrolysis and lactonization, wherein formaldehyde and butyraldehyde are reacted in the presence of a tertiary amine, hydrocyanic acid, at a concentration not exceeding 1% by weight in the reaction mixture, is used to form the cyanohydrin, and the hydrolysis and simultaneous lactonization are carried out with gaseous hydrogen chloride.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: April 29, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Harry Distler, Walter Goetze