Patents by Inventor Achim Hesse

Achim Hesse 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).

  • Segmented polyolefins
    Patent number: 5962594
    Abstract: Segmented polyolefins, which are produced by the reaction of mixtures of powdery polyolefins and polyolefin granulates with unsaturated monomers in the presence of thermally decomposing free radical-forming agents in continuous mixers in two consecutive reaction steps in the solid phase, a reaction step in a solid phase/melt transition phase and a melt homogenizing step, have a high strength and tenacity.The segmented polyolefins, as well as mixtures with conventional polyolefins, are suitable for the production of films, sheets, fibers, panels, coatings, pipes, hollow objects and foams.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: October 5, 1999
    Assignee: Borealis AG
    Inventors: Manfred Raetzsch, Hartmut Bucka, Achim Hesse, Norbert Reichelt
  • Fine-celled polyolefin foam materials
    Patent number: 5929127
    Abstract: Fine-celled polyolefin foams of high dimensional stability at elevated temperatures and high stiffness, with foam densities ranging from 10 to 600 kg/m.sup.3, consisting of mixtures of polypropylenes and polyolefins, which were reacted with bifunctional, unsaturated monomers and/or hydrolyzable, ethylenically unsaturated organosilane compounds in the presence of thermally decomposing free radical-forming agents in two reactive process steps and subsequently foamed. The fine-celled polyolefin foams are suitable for use in the packaging sector, preferably for packaging foods, for external and internal parts of motor vehicles and for components of electric and electronic equipment.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: July 27, 1999
    Assignee: Borealis AG
    Inventors: Manfred Raetzsch, Hartmut Bucka, Ulf Panzer, Achim Hesse, Norbert Reichelt, Dirk Leistner
  • Continuous method for producing polypropylene mixtures of increased stress-crack resistance and melt strength
    Patent number: 5883151
    Abstract: Polypropylene mixtures of increased stress-crack resistance and melt strength can be produced by irradiating polypropylene powders with low average particle diameters by low energy electron-beam accelerators with energies of 150 to 300 keV. The polypropylene mixtures produced are suitable particularly for producing films, sheets, panels, coatings, pipes, hollow objects and foamed materials.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: March 16, 1999
    Assignee: PCD Polymere Ges. m.b.H.
    Inventors: Manfred Raetzsch, Achim Hesse, Hartmut Bucka, Norbert Reichelt, Ulf Panzer, Reiner Mehnert
  • Modified elastomeric polypropylenes
    Patent number: 5665820
    Abstract: Elastomeric polypropylenes modified by grafting and blends thereof with isotactic polypropylenes modified by grafting, and the use thereof as compatibilizers or adhesion promoters for blends and metal composites.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: September 9, 1997
    Assignee: PCD Polymere Gesellschaft m.b.H.
    Inventors: Dirk Leistner, Manfred Ratzsch, Achim Hesse, Norbert Hafner, Markus Gahleitner, Klaus Bernreitner
  • Process for grafting polyolefins
    Patent number: 5585435
    Abstract: Process for the preparation of grafted polyolefins in a fluidized bed fluidized by means of steam and, if appropriate, alcohols.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: December 17, 1996
    Assignee: PCD Polymere Gesellschaft m.b.H.
    Inventors: Manfred R atzsch, Achim Hesse, Hartmut Bucka