Patents by Inventor Ralf Pelzer

Ralf Pelzer 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).

  • ELECTROCHEMICAL METHOD FOR PRODUCING 3-TERT-BUTYLBENZALDEHYDE DIMETHYL ACETAL
    Publication number: 20120016162
    Abstract: The present invention relates to 3-tert-butylbenzaldehyde dimethyl acetal and to 3-tert-butylbenzyl methyl ether and to an electrochemical method for producing 3-tert-butyl-benzaldehyde dimethyl acetal and intermediates passed through in said method.
    Type: Application
    Filed: March 27, 2009
    Publication date: January 19, 2012
    Applicant: BASF SE
    Inventors: Florian Stecker, Andreas Fischer, Jörg Botzem, Ulrich Griesbach, Ralf Pelzer
  • PROCESS FOR THE PREPARATION OF 2 SUBSTITUTED TETRAHYDROPYRANOLS
    Publication number: 20110295024
    Abstract: The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans by reacting 3-methylbut-3-en-1-ol(isoprenol) with the corresponding alkenealdehydes in the presence of a strongly acidic ion exchanger with subsequent hydrogenation. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with prenal, with subsequent hydrogenation.
    Type: Application
    Filed: May 26, 2011
    Publication date: December 1, 2011
    Applicant: BASF SE
    Inventors: Gabriele Gralla, Ralf Pelzer
  • Process for preparing 4-cyclohexyl-2-methyl-2-butanol
    Publication number: 20110237684
    Abstract: The present invention relates to a process for preparing 4-cyclohexyl-2-methyl-2-butanol. The process comprises the following steps: a) reaction of styrene with isopropanol at elevated temperature to obtain 4-phenyl-2-methyl-2-butanol, and b) heterogeneously catalyzed hydrogenation of 4-phenyl-2-methyl-2-butanol over a catalyst suitable for ring hydrogenation of aromatics.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Applicant: BASF SE
    Inventors: Klaus Ebel, Stefan Rüdenauer, Ralf Pelzer, Martin Bock
  • PROCESS FOR THE PREPARATION OF M-SUBSTITUTED ALKYLTOLUENES BY ISOMERIZATION WITH IONIC LIQUIDS AS CATALYSTS
    Publication number: 20110196176
    Abstract: The invention relates to a process for the preparation of m-substituted alkyltoluenes of the formula (I) in which R1 is C1-C5-alkyl, wherein a p-substituted alkyltoluene of the formula (II) in which R1 has the meaning given under formula (I), is isomerized in the presence of ionic liquids to give an m-substituted alkyltoluene of the formula (I). The m-substituted alkyltoluenes obtainable according to the invention are starting compounds for the preparation of fragrances and aroma substances.
    Type: Application
    Filed: February 10, 2011
    Publication date: August 11, 2011
    Applicant: BASF SE
    Inventors: Andreas Lanver, Klaus Ebel, Karl Beck, Ralf Pelzer, Jörg Botzem, Ulrich Griesbach
  • PROCESS FOR THE ELECTROCHEMICAL CLEAVAGE OF LIGNIN AT A DIAMOND ELECTRODE
    Publication number: 20110089046
    Abstract: The invention relates to a process for the electrochemical cleavage of lignin by means of a diamond electrode and also to a process for producing vanillin and derivatives thereof by electrochemical cleavage of lignin in a solution having a pH?11.
    Type: Application
    Filed: May 11, 2009
    Publication date: April 21, 2011
    Applicant: BASF SE
    Inventors: Ulrich Griesbach, Andreas Fischer, Florian Stecker, Joerg Botzem, Ralf Pelzer, Mario Emmeluth, Siegfried R. Waldvogel
  • Non-toxic coating composition, methods of use thereof and articles protected from attachment of biofouling organisms
    Publication number: 20060217456
    Abstract: The present invention relates to coating compositions comprising menthol and/or isopulegol and at least one further active ingredient which provide protection to surfaces coated therewith from attachment of various biofouling organisms. These compositions are advantageously used in paint, varnish and sealant formulations.
    Type: Application
    Filed: April 7, 2004
    Publication date: September 28, 2006
    Inventors: Ralf Pelzer, Ingo Woehrle
  • Method for causing a physiological cooling effect to the skin or mucosa involving the application of carbonic acid esters
    Patent number: 5703123
    Abstract: Asymmetric carbonates, thiocarbonates and urethanes having a physiological cooling effect on the skin and on mucosae are described.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: December 30, 1997
    Assignee: Haarmann & Reimer GmbH
    Inventors: Ralf Pelzer, Horst Surburg, Rudolf Hopp
  • Process for the photooxidation of terpene olefins
    Patent number: 5620569
    Abstract: In the photooxidation of terpene olefins, fewer by-products and higher conversion rates are obtained if a very high irradiation intensity is chosen.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: April 15, 1997
    Assignee: Haarmann & Reimer GmbH
    Inventors: Hans-Dieter Scharf, Peter Esser, Walter Kuhn, Ralf Pelzer
  • Use of benzazoles UV absorbers, new benzazoles and a process for their preparation
    Patent number: 5585091
    Abstract: Compounds which, per molecule, contain at least 2 benzazolyl groups are outstandingly suitable as UV absorbers for sunscreen compositions.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: December 17, 1996
    Assignee: Haarmann & Reimer GmbH
    Inventors: Ralf Pelzer, Roland Langner, Horst Surburg, Horst Sommer, Alfred Krempel, Rudolf Hopp
  • Compositions which have a physiological cooling effect, and active compounds suitable for these compositions
    Patent number: 5266592
    Abstract: Ketals, preferably glycerol ketals such as, for example, 1-menthone glycerol ketal or 3,3,5-trimethylcyclohexanone glycerol ketal, have a physiological cooling effect and are therefore suitable as active compounds in compositions which are intended to cause a sensation of freshness on human skin or mucous membrane.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: November 30, 1993
    Assignee: Haarmann & Reimer GmbH
    Inventors: Helmut Grub, Ralf Pelzer, Rudolf Hopp, Roland Emberger, Heinz-Jurgen Bertram