Patents by Inventor Gerhard Alicke

Gerhard Alicke 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).

  • Flame-proofed polystyrene foamed materials
    Patent number: 6420442
    Abstract: Flame-retardant foam slabs are based on styrene polymers wherein from 1 to 12% by weight of expanded graphite and also, if desired, from 1 to 12% by weight of a phosphorus compound are present as flame retardants.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: July 16, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz-Josef Dietzen, Guiscard Glück, Gerd Ehrmann, Gerhard Turznik, Gerhard Alicke, Klaus Hahn, Martin Klatt, Karlheinz Braun
  • Expandable styrene polymers containing recycled material
    Patent number: 5596045
    Abstract: Expandable styrene polymers containing recycled polystyrene have a content of recycled material of up to 40% by weight, based on the total weight of the polystyrene, wherein, in the course of the polymerization of the reaction mixture, from 100 to 500 ppm of a molecular weight regulator and/or from 0.05 to 1.0% by weight, based in each case on the polymerization solution, of a finely divided polyethylene wax are added.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: January 21, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Dietrich Scherzer, Wolfram Husemann, Michael Witt, Klaus Hahn, Knut Kaempfer, Gerhard Alicke
  • Foam boards produced using halogen-free blowing agents
    Patent number: 5576094
    Abstract: Extruded foam boards produced using halogen-free blowing agents from a styrene polymer thermoplastic matrix having a Vicat softening temperature VST B 50 of at most 100.degree. and a melt index MVI 200/5 of at least 5 ml/10 min are at least 20 mm, preferably more than 50 mm and in particular from 80 to 200 mm, thick. Preferred blowing agents for producing the foam boards are carbon dioxide alone, as well as mixtures of carbon dioxide and ethanol and/or dimethyl ether.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: November 19, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Julien N. R. Callens, Alfons J. S. van Biesen, Bernardo Wolff, Gerhard Alicke, Reinhold Weber, Franz-Josef Dietzen, Klaus Hahn
  • Production of foam boards of high compressive strength from styrene polymers
    Patent number: 5453454
    Abstract: Process for the production of foam boards having a minimum thickness of 20 mm and a cross-sectional area of at least 50 cm.sup.2 by extruding a mixture of the styrene polymer, from 1 to 10% by weight, based on the styrene polymer, of a blowing agent, wherein the blowing agent contains at least one ether from the group consisting of dimethyl ether, methyl ethyl ether and methyl vinyl ether.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: September 26, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Alicke, Manfred Weilbacher, Bernardo Wolff, Hartmut Heinen, Franz-Josef Dietzen, Reinhold Weber, Manfred Hahn
  • Production of foam boards of high compressive strength using a blowing agent mixture
    Patent number: 5334337
    Abstract: Foam boards of high compressive strength are produced by extruding a mixture of a styrene polymer and from 5 to 16% by weight of a blowing agent which containsa) from 3 to 70% by weight of an alcohol or ketone having a boiling point of from 56.degree. to 100.degree. C.,b) from 0 to 50% by weight of carbon dioxide,c) from 0 to 88% by weight of a saturated C.sub.3 - to C.sub.5 -hydrocarbon,d) from 2 to 90% by weight of at least one fluorinated hydrocarbon which has a boiling point of from -30 .degree. to +30.degree. C.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: August 2, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Voelker, Gerhard Alicke, Manfred Weilbacher, Manfred Weilbacher, Reinhold Weber, Horst Schuch
  • Production of foam sheets of high compressive strength
    Patent number: 5182308
    Abstract: Foam sheets of high compressive strength are produced by extruding a mixture of a styrene polymer and from 5 to 16% by weight of a blowing agent mixture containinga) from 3 to 70% by weight of an alcohol or ketone having a boiling point of from 56.degree. to 100.degree. C.,b) from 5 to 50% by weight of carbon dioxide andc) from 0 to 90% by weight of a saturated C.sub.3 - to C.sub.5 -hydrocarbon and/or of a hydrogen-containing chlorofluorocarbon or fluorinated hydrocarbon boiling at from -30.degree. to +30.degree. C.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: January 26, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Voelker, Gerhard Alicke, Horst Schuch, Manfred Weilbacher, Reinhold Weber
  • Foam sheets of high heat distortion resistance
    Patent number: 5106684
    Abstract: Foam sheets of high heat distortion resistance contain a) from 80 to 99% by weight of a styrene polymer and b) from 1 to 20% by weight of poly-1,4-phenylene sulfide, and, if desired, conventional additives and are produced by extrusion using a low-boiling blowing agent.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: April 21, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold Weber, Gerhard Alicke, Manfred Weilbacher, Uwe Guhr, Klaus Hahn
  • Foam sheets of high heat distortion resistance
    Patent number: 5071703
    Abstract: Foam sheets of high heat distortion resistance contain a) from 80 to 99% by weight of a styrene polymer and b) from 1 to 20% by weight of poly(2,6-dimethyl-1,4-phenylene oxide), and, if desired, conventional additives and are produced by extrusion using a low-boiling blowing agent.
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: December 10, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold Weber, Gerhard Alicke, Manfred Weilbacher, Uwe Guhr, Klaus Hahn