Process for the preparation of sulphur dyestuffs of the phthaloc

Details Process for the preparation of sulphur dyestuffs of the phthaloc Process for the preparation of sulphur dyestuffs of the phthaloc

1983-03-28

1984-12-04

Raymond, Richard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26024572, 26024585, C09B 4704, C09B 4730

Patent

active

044863500

ABSTRACT:
Preparation of phthalocyanine sulphur dyestuffs is improved by reducing phthalocyaninesulphochlorides in the presence of hydriodic acid and a non-free metal reducing agent which converts iodine into hydriodic acid.

REFERENCES:
patent: 2342663 (1944-02-01), Haddock
patent: 2484300 (1949-10-01), Mayhew
patent: 3105070 (1963-09-01), Bitterli
patent: 3378568 (1968-04-01), Bryan
patent: 3544565 (1970-12-01), Razavi
Moser et al., Phthalocyanine Compounds, Reinhold Publishing Corp., New York (1963), pp. 239, 285 and 286.

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