Patents Represented by Law Firm Sprowls, Willard R.
  • Dinitro- and diamino arylene disulfones
    Patent number: 3947480
    Abstract: Novel symmetrical dinitro- and diamino arylene disulfones. The dinitro compounds are prepared by the interaction of a disodium arylenedisulfinate and a p-halonitro-benzene. The diamino compounds may be prepared by reduction of the corresponding dinitro disulfones, as by means of stannous chloride, or by hydrogenation with the aid of a catalyst such as palladium or carbon.
    Type: Grant
    Filed: November 6, 1974
    Date of Patent: March 30, 1976
    Assignee: Uniroyal, Inc.
    Inventor: Iwhan Cho