| 摘要 |
The invention comprises phthalocyanine dyestuffs which contain at least two sulphonic acid groups and at least one group of the formula <FORM:0896042/IV (c)/1> where R is vinyl or b -halogen-ethyl group, in which the phthalocyanine residue is linked via a sulphonamide group either to a benzene ring to which the group -CH(NHCOR)2 is attached or to the coupling component of a monoazo compound to the diazo component of which is attached the group -CH(NHCOR)2. The dyestuffs are made by condensing a phthalocyanine dyestuff containing at least one sulphonic acid halide group with an amino benzene containing a group of the formula shown above, or with a coupling component containing an acylatable amino group and, after hydrolysis of any unreacted sulphohalide groups, coupling the condensation product with a diazonium compound containing a group of the above formula, the components being chosen so that the product contains at least two sulphonic acid groups. Examples are given. The dyestuffs dye and print polyhydroxylated fibrous materials of polyvinyl alcohol or natural or regenerated cellulose in conjunction with an alkali and heat treatment. The dyestuffs also dye and print leather, silk, wool and fibres of super polyamide or super polyurethane in weakly alkaline media.
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