Patents Assigned to Ihara Chemical Industry Co., Limited
  • 4-Chloro-3,5-diaminophenyl acetates and curing agent
    Patent number: 4246425
    Abstract: 4-Chloro-3,5-diaminophenyl acetates having the formula ##STR1## wherein R represents an alkyl group are useful as curing agent for polyurethane elastomer and intermediates for pharmaceutical and agrochemical compounds and are produced by simultaneously nitrating hydrolyzing 4-chlorobenzylcyanide and esterifying the resulting 4-chloro-3,5-dinitrophenyl acetic acid and then reducing the resulting ester.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: January 20, 1981
    Assignee: Ihara Chemical Industry Co., Limited
    Inventors: Wataro Koike, Masami Takayama, Hideaki Ohashi, Chihiro Yazawa