METHOD FOR PRODUCTION OF PHTHALOCYANINE OR COMPLEXES ON ITS BASE Russian patent published in 1996 - IPC

FIELD: production of pigments and dyes. SUBSTANCE: dinitrile of phthalic acid is used as reagent 1, methylate of alkali metal or salt of transition metal is used as reagent 2. Donor of hydrogen ions which is chosen of NaAlH₄,, NaBH₄, LiAlA₄, dihydropyridine or dihydroquinoline is used as reagent 3. Reaction is carried out by melting at 180-250 C, 0.01-5 % of donor of hydrogen ions being preferred. EFFECT: improves efficiency of method. 3 tbl