Patents Examined by Bhat N.
  • Process for producing granular fire retardant
    Patent number: 5180525
    Abstract: A process for producing a granular fire retardant, which comprises melt-extruding a halogenated carbonate compound of particular structure having a specific viscosity of 0.015-0.10 by the use of an extruder and then immediately cutting the extrudate into granules.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: January 19, 1993
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Kazuyoshi Umeda, Funiaki Nakamoto