Patents by Inventor Roderich Gartner

Roderich Gartner 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 recovery of water-soluble hydroformylation catalysts containing rhodium
    Patent number: 4504588
    Abstract: To recover a hydroformylation catalyst system containing rhodium and phosphine, the aqueous solution containing the catalyst system is mixed with acid and then extracted with an amine which is dissolved in an organic solvent. The organic phase is separated and treated with the aqueous solution of an inorganic base, thereby recovering the catalyst in essentially pure form as an aqueous solution.
    Type: Grant
    Filed: September 20, 1983
    Date of Patent: March 12, 1985
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Roderich Gartner, Boy Cornils, Ludger Bexten, Dieter Kupies
  • Process for the preparation of sulfonated aryl phosphine
    Patent number: 4483802
    Abstract: A process for the preparation of mono, di or trisulfonated aryl phosphines whereby triaryl phosphine is sulfonated with oleum at 0.degree. to 40.degree. C. After dilution of the reaction product with water, the sulfonated triaryl phosphine is extracted with an amine dissolved in an organic solvent; both the amine and organic solvent being insoluble in water. From the organic phase the sulfonated phosphine is transferred to the aqueous phase by treatment with an aqueous solution of a base.
    Type: Grant
    Filed: September 20, 1983
    Date of Patent: November 20, 1984
    Assignee: Ruhrchemie Aktiengesekkschaft
    Inventors: Roderich Gartner, Boy Cornils, Helmut Springer, Peter Lappe
  • Method for preventing caking of polyols
    Patent number: 4435603
    Abstract: A polyol composition comprising a solid polyol which is crystalline under normal conditions and, as an anti-caking agent therefor, a tertiary amine containing at least two identical organic substituents, each having two to twenty carbon atoms. A method of preventing caking of polyols is disclosed wherein to such polyols there is added at least one of such tertiary amines, preferably in a concentration of 0.05 to 0.25 percent by weight based on the weight of the polyol.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: March 6, 1984
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Boy Cornils, Hanswilhelm Bach, Roderich Gartner, Wilhelm Gick