2-Aryl Azo Benzothiazole Resorcinol Formaldehyde Oligomer Dyes

摘要

A series of Oligomeric azo dyes has been prepared by coupling various diazonium salt of Benzothizaoles to Resorcinol-formaldehyde (RF) oligomer. They were evaluated in terms of their softening points, yield. colour, solubility and U.V.-Visible spectrra. Structure property relationships are discussed and dyeing on polyester PET, Nylon-6,6 and wool assessed. Dyeing on polyester, Nylon-6,6 and wool resulted in yellow, Orange and brown to red colourations having excellent fastness to light and washing.