Patents by Inventor Rolf S. Bruenner

Rolf S. Bruenner 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).

  • Bonding agent for polyurethanes
    Patent number: 4410376
    Abstract: An improved bonding agent for a solid rocket propellant, having the general formula[X.sub.2 N(CH.sub.2 CH.sub.2 NX).sub.n CH.sub.2 CH.sub.2 NX.sub.2 ] (HO.sub.3 SC.sub.6 H.sub.4 CH.sub.3).sub.zwherein n is an integer having a value of 1 to 11, X is --H or --CH.sub.2 CH.sub.2 CN; wherein the amount of --CH.sub.2 CH.sub.2 CN, expressed as y, is in the approximate range of 0.15 (n+4) to 0.45 (n+4), the amount of HO.sub.3 SC.sub.6 H.sub.4 CH.sub.3, expressed as z, is in the approximate range of 0.01 (n+4) to 0.25 (n+4), and the ratio y:z is in the range of 1.5:1 to 3:1.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: October 18, 1983
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Rolf S. Bruenner, Adolf E. Oberth
  • Bonding agents for polyurethane
    Patent number: 4000023
    Abstract: This patent describes a novel solid rocket propellant comprising a polyurethane binder, a solid ammonium perchlorate oxidizing agent, and an effective bond improving amount of a bonding agent having the general formula:X.sub.2 N(CH.sub.2 CH.sub.2 NX).sub.n CH.sub.2 CH.sub.2 NX.sub.2wherein n is an integer and can assume values from 1 to 12, and X is hydrogen, cyanoethyl, hydroxypropyl or mixtures thereof with the proviso that at least one of said X groups is hydrogen.
    Type: Grant
    Filed: December 9, 1968
    Date of Patent: December 28, 1976
    Assignee: Aerojet-General Corporation
    Inventors: Adolf E. Oberth, Rolf S. Bruenner