Patents by Inventor James William Priegnitz

James William Priegnitz 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 separation of 1,3-butadiene by selective adsorption on a zeolite adsorbent
    Patent number: 3992471
    Abstract: A process for the separation of 1,3-butadiene from a feed mixture comprising 1,3-butadiene and at least one other C.sub.4 unsaturate. A feed stream containing 1,3-butadiene and at least one other C.sub.4 unsaturate is contacted at adsorption conditions including the liquid phase with an adsorbent comprising type X zeolite containing sodium or potassium cations at the exchangeable cationic sites to effect the selective adsorption of 1,3-butadiene. The adsorbent is then contacted with a desorbent material at desorption conditions including the liquid phase to effect the removal of 1,3-butadiene from the adsorbent. The 1,3-butadiene is thereafter separated by separation means from desorbent material and recovered as a purified product.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: November 16, 1976
    Assignee: UOP Inc.
    Inventor: James William Priegnitz