Blanchard, Flynn, Thiel, Boutell & Tanis
Process for the preparation of organic isocyanate compounds
 A process for preparing organic isocyanate compounds characterized by reacting a chloromethyl group-containing compound having the formula: EQU (X).sub.n RCH.sub.2 Cl PA1 wherein X, which can be the same or different, is chlorine, alkyl, cycloalkyl, alkenyl, phenyl, chloromethylphenyl or chloromethyl, n is 0 or an integer of 1 to 3, and R is an aromatic hydrocarbon radical or an olefin radical, With an alkali cyanate, in the presence of a catalyst composition comprising (a) a cuprous salt in an amount of 0.1 to 20% by weight, based on said chloromethyl group-containing compound, and (b) a tertiary amine compound or quaternary ammonium compound in an amount equivalent to 0.05 to 1.25 gram atoms of nitrogen per gram mole of said cuprous salt, in a high-boiling-point solvent having a dieelectric constant (.epsilon.) not higher than 20, at a reaction temperature of 150.degree. to 250.degree. C, for 0.1 to 10 hours. 
Kao Soap Co., Ltd.
C
C07C
inventional
Susumu Atsushi Yoshiaki Sadashi Fumio Yoshiaki Hisao Masahiro
Handa Nishibata Inamoto Ueda Tanimoto Tanaka Kitano Saito