Patent ID: 6103896
Filing Date: 2000-08-15
Classification: C09B

Abstract:
A process for the production of a metal phthalocyanine, which comprises heating phthalic anhydride or phthalimide, urea, metal salt and a catalyst in mixed solvents of chlorinated benzene and a linear hydrocarbon and wherein at least one compound selected from the group consisting of 1,8-diazabicyclo(5.4.0)-undecene, N,N-diethylaniline, N-butylaniline, aniline, N,N,N',N'-tetramethyl urea N,N,N',N'-tetramethyl thiourea, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone and dimethyl sulfoxide is further added in an amount of 0.01 to 0.6 mol per mole of the metal salt.