Patents by Inventor Renate Paulczynski

Renate Paulczynski 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).

  • Process for monoalkylation of C-H acidic methylene groups
    Patent number: 7038072
    Abstract: The present invention is directed to a process for the synthesis of monoalkylated C—H acidic methylene group-containing compounds, such as malonic esters, and malonic ester nitriles.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: May 2, 2006
    Assignee: Degussa AG
    Inventors: Kerstin Bodmann, Oliver Meyer, Manfred Kaufhold, Jürgen Fieker, Renate Paulczynski
  • Process for monoalkylation of C-H acidic methylene groups
    Publication number: 20040054226
    Abstract: The present invention is directed to a process for the synthesis of monoalkylated C—H acidic methylene group-containing compounds, such as malonic esters, and malonic ester nitriles.
    Type: Application
    Filed: July 21, 2003
    Publication date: March 18, 2004
    Applicant: Degussa AG
    Inventors: Kerstin Bodmann, Oliver Meyer, Manfred Kaufhold, Jurgen Fieker, Renate Paulczynski
  • Process for the preparation of 3-alkoxyacrylonitrile
    Patent number: 6482971
    Abstract: The present invention provides a process, which includes: preparing 3-alkoxyacrylonitrile from 3,3-dialkoxypropionitrile by catalytically eliminating alcohol from 3,3-dialkoxypropionitrile in the presence of at least one aromatic sulfonic acid catalyst and at least one high-boiling solvent. Another embodiment of the invention provides a method of producing a pharmaceutical compound, which includes the above-described process. Another embodiment of the invention provides a method of producing a cosmetic product, which includes the above-described process.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: November 19, 2002
    Assignee: Degussa AG
    Inventors: Renate Paulczynski, Manfred Kaufhold, Artur Hunds
  • Process for the preparation of 3-alkoxyacrylonitrile
    Publication number: 20020028962
    Abstract: The present invention provides a process, which includes:
    Type: Application
    Filed: August 6, 2001
    Publication date: March 7, 2002
    Applicant: Degussa AG
    Inventors: Renate Paulczynski, Manfred Kaufhold, Artur Hunds
  • Process for the preparation of cyclooctanol
    Patent number: 6313356
    Abstract: A process for the preparation of cyclooctanol from cyclooctene comprising: a. reaction of cyclooctene with formic acid in the absence of an added catalyst to produce a two-phase reaction mixture containing cyclooctyl formate and residual formic acid, b. separation of the two phases into a lower phase rich in formic acid (phase A) and an upper phase low in formic acid (phase B), c. extraction of cyclooctyl formate from phase A to obtain an extract, d. combination of phase B and the extract from phase A, e. distillative work-up of the combination of phase B and the extract from phase A in an apparatus fitted with a short distillation path to obtain crude cyclooctyl formate, and f. catalytic transesterification of the cyclooctyl formate of said crude cyclooctyl formate with an alcohol to produce cyclooctanol.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: November 6, 2001
    Assignee: Degussa Huels AG
    Inventors: Guenther Kohler, Manfred Kaufhold, Renate Paulczynski, Michael Beuth