Patents by Inventor Dirk Achten

Dirk Achten 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).

  • Patent number: 6800708
    Abstract: The invention relates to a new process for the preparation of functionalized telechelics based on vinyl polymers, the telechelics prepared in this way and their use in the plastics, fibers or coating sector.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: October 5, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Melchiors, Hartwig Höcker, Helmut Keul, Dirk Achten
  • Publication number: 20040166346
    Abstract: The present invention relates to a composition containing a hydrogenated nitrile-butadiene rubber (HNBR), a peroxide crosslinking system and a resorcinol-formaldehyde resin, to a process for the preparation of the composition, to the use of the composition as an adhesion promoter, and also to a multilayer product containing the composition according to the present invention.
    Type: Application
    Filed: February 13, 2004
    Publication date: August 26, 2004
    Inventor: Dirk Achten
  • Publication number: 20040110964
    Abstract: The present invention relates to dithiocarbamic esters, their preparation and their use for regulating the degree of polymerization during the polymerization of monomers, such as during the polymerization of chloroprene to give polychloroprene, and during the polymerization of 2,3-dichlorobutadiene to give poly-2,3-dichlorobutadiene, and during the copolymerization of chloroprene with 2,3-dichlorobutadiene. The present invention further relates to polymers which are obtainable via the polymerization of monomers in the presence of the dithiocarbamic esters of the invention. The present invention also relates to polymers which contain end groups derived from the dithiocarbamic esters of the present invention.
    Type: Application
    Filed: September 15, 2003
    Publication date: June 10, 2004
    Inventors: Dirk Achten, Michael Klimpel, Emilie Barriau, Lothar Reif, Renke Mottweiler, Heinrich Berg, Zsolt Szentivanyi, Stefan Glander
  • Publication number: 20030208021
    Abstract: The invention relates to a new process for the preparation of functionalized telechelics based on vinyl polymers, the telechelics prepared in this way and their use in the plastics, fibers or coating sector.
    Type: Application
    Filed: April 7, 2003
    Publication date: November 6, 2003
    Inventors: Martin Melchiors, Hartwig Hocker, Helmut Keul, Dirk Achten
  • Patent number: 6632895
    Abstract: The invention relates to a new process for the preparation of functionalized alkoxyamine initiators, new alkoxyamine initiators based on (meth)acrylate which are prepared by this process, and their use for the preparation of polymers.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: October 14, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Melchiors, Hartwig Höcker, Helmut Keul, Dirk Achten
  • Patent number: 6573346
    Abstract: The invention relates to a new process for the preparation of functionalized telechelics based on vinyl polyrners, the telechelics prepared in this way and their use in the plastics, fibers or coating sector.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: June 3, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Melchiors, Hartwig Höcker, Helmut Keul, Dirk Achten