Patents by Inventor Guenter Kreilkamp

Guenter Kreilkamp 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).

  • Synthesis of triacetonediamine compounds by reductive amination proceeding from triacetonediamine and derivatives thereof
    Patent number: 10227300
    Abstract: An N-substituted triacetonediamine compound is prepared by reacting 4-amino-2,2,6,6-tetramethylpiperidine or a derivative thereof with a carbonyl compound in a reductive amination, wherein reductive conditions are established by conducting the reaction in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst includes at least one metal M, wherein the metal M is selected from the group consisting of V, Cr, Mo, Mn, Ni, Pd, Pt, Fe, Ru, Os, Co, Rh, Ir, and Cu.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: March 12, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Benjamin Willy, Jochen Niemeyer, Guenter Kreilkamp, Beatrix Vom Bruch, Manfred Neumann, Michael Keup
  • Process for preparing an N-methyl-substituted triacetonamine compound
    Patent number: 9617245
    Abstract: An N-methyl-substituted triacetonamine compound is prepared by reacting at least one triacetonamine compound (I) with formaldehyde under reductive conditions, in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst contains at least one metal M, wherein the metal M is selected from the group consisting of V, Cr, Mo, Mn, Ni, Pd, Pt, Fe, Ru, Os, Co, Rh, Ir, and Cu.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: April 11, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Jochen Niemeyer, Benjamin Willy, Felix Nissen, Manfred Neumann, Guenter Kreilkamp, Sabine Schering
  • PROCESS FOR PREPARING AN N-METHYL-SUBSTITUTED TRIACETONAMINE COMPOUND
    Publication number: 20160214962
    Abstract: An N-methyl-substituted triacetonamine compound is prepared by reacting at least one triacetonamine compound (I) with formaldehyde under reductive conditions, in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst contains at least one metal M, wherein the metal M is selected from the group consisting of V, Cr, Mo, Mn, Ni, Pd, Pt, Fe, Ru, Os, Co, Rh, Ir, and Cu.
    Type: Application
    Filed: January 22, 2016
    Publication date: July 28, 2016
    Applicant: Evonik Degussa GmbH
    Inventors: Jochen NIEMEYER, Benjamin WILLY, Felix NISSEN, Manfred NEUMANN, Guenter KREILKAMP, Sabine SCHERING
  • SYNTHESIS OF TRIACETONEDIAMINE COMPOUNDS BY REDUCTIVE AMINATION PROCEEDING FROM TRIACETONEDIAMINE AND DERIVATIVES THEREOF
    Publication number: 20160214937
    Abstract: An N-substituted triacetonediamine compound is prepared by reacting 4-amino-2,2,6,6-tetramethylpiperidine or a derivative thereof with a carbonyl compound in a reductive amination, wherein reductive conditions are established by conducting the reaction in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst includes at least one metal M, wherein the metal M is selected from the group consisting of V, Cr, Mo, Mn, Ni, Pd, Pt, Fe, Ru, Os, Co, Rh, Ir, and Cu.
    Type: Application
    Filed: January 22, 2016
    Publication date: July 28, 2016
    Applicant: Evonik Degussa GmbH
    Inventors: Benjamin WILLY, Jochen NIEMEYER, Guenter KREILKAMP, Beatrix VOM BRUCH, Manfred NEUMANN, Michael KEUP
  • Triazine Compounds Comprising Substituents Containing Amino Groups and Carboxyl Groups
    Publication number: 20080251758
    Abstract: The invention relates to triazine compounds comprising both amino- and carboxyl-containing substituents and also to a process for preparing them.
    Type: Application
    Filed: October 13, 2006
    Publication date: October 16, 2008
    Applicant: Evonik Degussa Gmbh
    Inventors: Jochen Kirchhoff, Peter Werle, Guenter Kreilkamp, Edeltraud Kruppa
  • Continuous process for preparing 4-aminopiperidines
    Patent number: 5945536
    Abstract: N-monosubstituted 4-aminopiperidine is prepared by a process comprising, in a single stage, continuously passing a 4-oxopiperidine and a primary amine over a metal hydrogenation catalyst under a hydrogen partial pressure of 1-500 bar at a LHSV of up to 1 hr.sup.-1.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: August 31, 1999
    Assignee: Huels Atiengesellschaft
    Inventors: Udo Jegelka, Guenter Kreilkamp
  • Continuous process for the preparation of 4-amino-2,2,6,6-tetramethylpiperidine
    Patent number: 5773622
    Abstract: A process for the continuous preparation of 4-amino-2,2,6,6-tetramethylpiperidine (TAD), comprising: passing triacetoneamine, ammonia and hydrogen over a catalyst of at least two layers in a reactor, wherein at least one catalyst layer comprises at least one element of the 4th, 5th, or 6th row of the 8th transition group of the Periodic Table or combinations of these metal elements on a suitable support, where the catalyst content with respect to each individual catalytically active element changes independently from the reactor inlet to the reactor outlet.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: June 30, 1998
    Assignee: Huels Aktiengesellschaft
    Inventors: Udo Jegelka, Gerhard Bachstaedter, Stefan Frentzen, Guenter Kreilkamp, Gerhard Thelen