Patents Assigned to DSM Copolymer
  • Palladium catalyst systems for selective hydrogenation of dienes
    Patent number: 5430163
    Abstract: A catalyst precursor is provided that is useful in the selective hydrogenation of olefinic unsaturation in polymers or copolymers. The precursor comprises a palladium salt that is complexed with a complexing agent selected from the group consisting of organic phosphates, dialkylidene acetones, and tetraalkyl ammonium hydroxides. The catalyst precursor may be used in batch, step-wise addition, or continuous systems.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: July 4, 1995
    Assignee: DSM Copolymer
    Inventor: Robert T. Patterson