Patents by Inventor Seifert Holger

Seifert Holger 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).

  • Method for the Production of Rigid Polyurethane Foams
    Publication number: 20070259981
    Abstract: The invention relates to a process for producing rigid polyurethane foams by reacting a) polyisocyanates with b) compounds having at least hydrogen atoms which are reactive toward isocyanate groups, in the presence of c) blowing agents, wherein the compounds having at least hydrogen atoms which are reactive toward isocyanate groups comprise bi1) at least one polyether alcohol which has been initiated by means of sucrose and/or sorbitol and has a functionality of greater than 4 and a hydroxyl number in the range from 400 to 550 mg KOH/h, bi2) at least one polyether alcohol which has been initiated by means of TDA and has a hydroxyl number in the range from 120 to 240 mg KOH/g and an aromatics content in the range from 6.
    Type: Application
    Filed: October 12, 2005
    Publication date: November 8, 2007
    Applicant: BASF Aktiengelellschaft
    Inventors: Berend Eling, Anja Biedermann, Andreas Emge, Peter Malotki, Seifert Holger