Patents by Inventor Harro Wache

Harro Wache 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 carbonyl compounds
    Patent number: 6133482
    Abstract: In a process for preparing carbonyl compounds of the formula ##STR1## where R.sup.1 is a hydrogen atom or an alkyl radical having from 1 to 3 carbon atoms, R.sup.2 is a hydrogen atom or a radical of the formula ##STR2## where R.sup.3 is a hydrogen atom or together with R.sup.4 is an oxygen atom, R.sup.4 is the radical OR.sup.6 or together with R.sup.3 is an oxygen atom, R.sup.5 is a hydrogen atom, an alkyl radical having from 1 to 8 carbon atoms or a cyclohexyl or cyclopentyl radical and R.sup.6 is an alkyl radical having from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula --CH.sub.2 --CHO or --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CHO, by gas-phase oxidation of methanol or alcohols of the formula ##STR3## where R.sup.1 and R.sup.5 are as defined above and R.sup.7 is a hydrogen atom or a radical OR.sup.8 and R.sup.8 is a hydrogen atom, an alkyl radical having from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical for the formula --CH.sub.2 --CH.sub.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: October 17, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Fetzer, Dirk Demuth, Heinz Rutter, Helmuth Menig, Peter Resch, Wilhelm Ruppel, Harro Wache
  • Method for producing carbonyl compounds
    Patent number: 6072087
    Abstract: The present invention relates to a process for the preparation of carbonyl compounds of the formula ##STR1## in which R.sup.1 denotes a hydrogen atom or an alkyl radical containing from 1 to 3 carbon atoms, R.sup.2 denotes a hydrogen atom or a radical of the formula ##STR2## in which R.sup.3 denotes a hydrogen atom or, together with R.sup.4, an oxygen atom, R.sup.4 denotes the radical OR.sup.6 or, together with R.sup.3, an oxygen atom, R.sup.5 denotes a hydrogen atom or an alkyl radical containing from 1 to 8 carbon atoms or a cyclohexyl or cyclopentyl radical, and R.sup.6 denotes an alkyl radical containing from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula--CH.sub.2 --CHO or --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CHO,by gas-phase oxidation of methanol or alcohols of the formula ##STR3## in which R.sup.1 and R.sup.5 have the meanings specified above and R.sup.7 denotes a hydrogen atom or a radical OR.sup.8, and R.sup.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: June 6, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Fetzer, Dirk Demuth, Heinz Rutter, Helmuth Menig, Peter Resch, Wilhelm Ruppel, Harro Wache
  • Method and composition to increase the life of Liquid hydroxy-and alkoxyalkyl ketones
    Patent number: 5874631
    Abstract: A method for increasing the shelf life of liquid hydroxy- and alkoxyalkyl ketones by adding from 0.0001 to 1% by weight of a base is described.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: February 23, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Ross, Ludwig Wambach, Harro Wache
  • Preparation of cyclopentanone
    Patent number: 4895985
    Abstract: The invention relates to a process for the preparation of cyclopentanone from adipic acid wherein adipic acid vapor in an inert gas at a temperature of from 250.degree. C. to 450.degree. C., possibly accompanied by water vapor, is passed over an oxygenous acidic or basic catalyst.
    Type: Grant
    Filed: August 25, 1988
    Date of Patent: January 23, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Decker, Harro Wache, Wolfgang Franzischka
  • Catalyst for partial hydrogenation
    Patent number: 4001344
    Abstract: A palladium catalyst for the maufacture of butene-2-diol-1,4 from technical butynediol obtained by reacting acetylene and formaldehyde by the Reppe method in contact with copper catalysts and not specially purified contains (in addition to palladium) both zinc and cadmium, or either zinc or cadmium together with bismuth or tellurium.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: January 4, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Herwig Hoffmann, Guenther Boettger, Karl Baer, Harro Wache, Heinz Graefje, Wolfgang Koernig