Patents by Inventor Gerrit Pelzer

Gerrit 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).

  • Method for producing alkyl-substituted butenols
    Patent number: 7169749
    Abstract: Alkyl-substituted butenols having the formula (I): R1—CH2—CH?CR2—CH2OH ??(I) wherein R1 is a saturated or olefinically unsaturated alkyl or cycloalkyl group having from 4 to 16 carbon atoms and wherein R1 is optionally substituted by an alkyl, cycloalkyl, aryl or alkaryl having up to 12 carbon atoms; R2 is hydrogen or an alkyl group having from 1 to about 6 carbon atoms are produced by a process which comprises: (1) reacting an aldehyde of the formula (II): R1—CH2—CHO ??(II) wherein R1 has the same meaning as in formula (I), with the corresponding lower aldehyde to form an unsaturated aldehyde in an inert organic solvent; (2) continuously contacting an optionally calcined copper/zinc catalyst with the unsaturated aldehyde under isothermal conditions at temperatures of from about 45 to about 60° C. and under a hydrogen pressure of from 1 to about 300 bar.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: January 30, 2007
    Assignee: Kao Corporation
    Inventors: Lothar Friesenhagen, Stephan Heck, Norbert Klein, Thomas Markert, Gerrit Pelzer, Markus Schneider
  • Method for producing aldehydes
    Patent number: 6897342
    Abstract: A process for making aldehydes involving: (a) providing a fatty alcohol; (b) providing an oxidic copper/zinc catalyst; and (c) continuously dehydrogenating the fatty alcohol, in the presence of the oxidic copper/zinc catalyst, at a temperature of from about 200 to 280° C. and a pressure of from about 10 mbar to 1 bar.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: May 24, 2005
    Assignee: Cognis Deutschland GmbH & Co. KG
    Inventors: Albrecht Schwerin, Gerrit Pelzer, Lothar Friesenhagen, Bernhard Gutsche
  • Method for hardening unsaturated fatty substances
    Publication number: 20040236127
    Abstract: Unsaturated fatty compounds are hydrogenated at a hydrogen pressure of from 100 to 300 bar in the presence of transition metal catalyst to form a hydrogenation product having an iodine value of less than 2.
    Type: Application
    Filed: March 1, 2004
    Publication date: November 25, 2004
    Inventors: Gerrit Pelzer, Lars Zander, Ulrich Ruigk, Lothar Friesenhagen, Lothar Friesenhagen, Bernhard Gutsche, Norbert Klein, Ingomar Mrozek, Egbert Gritz, Horst Josten, Wilhelm Kuhr
  • Method for producing aldehydes
    Publication number: 20040002620
    Abstract: A process for making aldehydes involving: (a) providing a fatty alcohol; (b) providing an oxidic copper/zinc catalyst; and (c) continuously dehydrogenating the fatty alcohol, in the presence of the oxidic copper/zinc catalyst, at a temperature of from about 200 to 280° C. and a pressure of from about 10 mbar to 1 bar.
    Type: Application
    Filed: July 11, 2003
    Publication date: January 1, 2004
    Inventors: Albrecht Schwerin, Gerrit Pelzer, Lothar Friesenhagen, Bernhard Gutsche
  • Process for making branched, substantially unsaturated fatty alcohols
    Patent number: 6548717
    Abstract: A process for making branched, substantially unsaturated fatty alcohols involving: (a) providing a C16-22 fatty acid; (b) dimerizing the C16-22 fatty acid to form a monomer fraction containing branched, substantially unsaturated fatty acids; (c) removing the monomer fraction; (d) esterifying the branched, substantially unsaturated fatty acids contained in the monomer fraction into branched, substantially unsaturated fatty acid methyl esters; and (e) hydrogenating the branched, substantially unsaturated fatty acid methyl esters with their double bonds intact, to form the branched, substantially unsaturated fatty alcohols.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: April 15, 2003
    Assignee: Cognis Deutschland GmbH & Co. KG
    Inventors: Alfred Westfechtel, Norbert Huebner, Lothar Friesenhagen, Gerrit Pelzer, Norbert Klein, Ansgar Behler, Thomas B. Downing, Steven A. Kennedy, C. William Blewett