Patents by Inventor Manfred Weilbacher

Manfred Weilbacher 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).

  • 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
  • Preparation of foams having a high compressive strength
    Patent number: 5006566
    Abstract: Foams having high compressive strength are obtained by extrusion of a mixture of a styrene polymer and from 3 to 9% by weight of a blowing agent consisting of from 80 to 100% by weight of CO.sub.2 and from 0 to 20% by weight of one or more halohydrocarbons or hydrocarbons which are gaseous at room temperature, the mixture being extruded into a zone under from 0.1 to 2 bar gage pressure and the foam being allowed to stabilize under this pressure.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: April 9, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold Weber, Manfred Weilbacher, Hermann Tatzel, Ludwig Zuern, Hans D. Zettler, Klaus Hinselmann
  • Production of closed-celled foams of high compressive strength
    Patent number: 4840976
    Abstract: Closed-celled foams of high compressive strength are obtained by extruding a mixture of a styrene polymer and from 8 to 16% by weight of a blowing agent mixture containing from 2 to 20% by weight of ethyl chloride, from 2 to 20% by weight of carbon dioxide, from 20 to 80% by weight of dichlorodifluoromethane and from 10 to 60% by weight of monochlorodifluoromethane.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: June 20, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold Weber, Ludwig Zuern, Manfred Weilbacher