Synthesis of Some Cobalt Phthalocyanine-3,3′,3”,3”’-tetrasulphonamides and Spectroscopic Studies of Their Application to Cellulosic Fibres

The treatment of cobalt phthalocyanine-3,3′,3”,3”’-tetrasulphonylchloride with different primary amines with different substituents has given eight novel cobalt phthalocyanine-3,3′,3”,3”’-tetrasulphonamide compounds. The structure determination have been carried out using elemental analysis, molecular weight measurements and infra-red spectroscopy. Direct application of the new synthesised dyes to cotton and viscose fabrics at two different bath concentrations gave a range of percentage reflectances values in the visible region. The absorption maxima appeared in both cases in the range 670 – 680 nm