Patents by Inventor Ulrich Brocker

Ulrich Brocker 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 removing alkaline catalysts from polyether polyols
    Patent number: 4482750
    Abstract: A process for removing alkali material from a polyether polyol. From 1-20 wt. % water and 0-30 wt. % inert organic solvent are added to an alkaline polyether polyol. The resultant emulsion is maintained at a temperature of at least 70.degree. C. for a period of at least 30 minutes with little or no stirring to effect separation of the emulsion into an organic and an aqueous phase. The aqueous phase is then separated from the organic phase and the organic phase is treated by known methods to remove residual alkali material.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: November 13, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmut Hetzel, Pramod Gupta, Roland Nast, Herbert Echterhof, Ulrich Brocker