Patents Examined by John F. Teraphane
  • Process for producing brominated acenaphthylene and its condensates
    Patent number: 4760211
    Abstract: A process for recovering brominated acenaphthylene and its condensate in the form of powder, comprising dropping a solution of brominated acenaphthylene and its condensate produced from acenaphthene by reactions of bromination, condensation and dehydrobromination into hot water containing a carboxylic acid ester of polyoxyalkylene sorbitan, while the solvent is being distilled off, to recover the brominated acenaphthylene and its condensate in the form of powder dispersed in water.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: July 26, 1988
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Masahige Kubo, Koji Kawabata, Yukihiro Tsutsumi