Dyed polymers and copolymers having a cyanovinyl-azo dye incorporated in the structure thereof

摘要: Structurally dyed random polymers and copolymers characterized in that their chain comprises a dye of the formula: ##STR1## wherein residue --CH═CH--CN is fixed position 4 or 5, X represents hydrogen halogen atom, benzene ring A can be substituted by atoms, alkyl, alkoxy acylamino groups, m 0 1 B coupling component, either unsubstituted which free sulfonic carboxylic acid groups. Such are intensely useful for making yarns, molded articles, varnishes, synthetic resins, fibers, like. The forms an integral part structure copolymers.