Patents by Inventor Reinhard Krassig

Reinhard Krassig 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).

  • Process for the manufacture of molded bodies from heat resistant polyurethane integral foam
    Patent number: 4774040
    Abstract: There is provided a process for the manufacture of molded bodies of polyurethane integral foam, such as body parts for the automotive industry, in which the first step of the process, the polyol component is prepared and in the second step of the process the polyol component is reacted with the isocyanate component according to the reaction injection molding method. In the mold and/or after removal from the mold, the molded bodies are subjected to thermal aftertreatment within the framework of a third process step for thirty minutes to three hours at 120.degree. to 180.degree. C. Also, the polyol component may contain nucleating agents, so that the nucleated molded bodies may or may not need be thermally aftertreated.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: September 27, 1988
    Assignee: Phoenix Aktiengesellschaft
    Inventors: Thies Timm, Herbert Schaper, Reinhard Krassig