Water-soluble metal-free phthalocyanine dyes, preparation method and use thereof

摘要

Phthalocyanine dyes of the general formula (1) are described below:;Wherein H ₂ Pc is a radical of phthalocyanine, M is hydrogen or an alkali metal or other salt-forming metal, R ¹ is hydrogen or lower alkoxy, cyano, lower alkanoylamino, carboxyl, sulfo, phosphate, Lower alkyl which may be substituted by sulfato, hydroxyl or lower dialkylamino, and R ² is lower alkyl which may be substituted by substituents shown for hydrogen or R ¹ or phenyl, sulfophenyl or carboxyphenyl or R ¹ and R ² together with the nitrogen atom form a 4- to 8-membered heterocyclic saturated ring, and B is of the general formula (2a) or (2b);Wherein R ³ is hydrogen, lower alkyl or lower alkoxy, R ⁴ is hydrogen, halogen, lower alkyl or lower alkoxy, m is 0 or 1 and n is 0, 1 or 2, The —SO ₂ Y group is a fibrous reactive radical of the vinyl sulfone class, a is 0 to 3, b is 0 to 2, c is 1 to 4, and (a + b + c) other sums is 1 to 4 .;Such dyes are useful for dyeing hydroxyl- and / or carboxamido materials, in particular fiber materials such as cellulose fibers, wool and synthetic polyamide fibers.