CS215766B1 - Red 1:2 chromium complex azo dyestuff - Google Patents

Abstract

1:2 chromium complex of pyrazolone o, 6-dihydroxyazo dyes, asymmetrically substituted with one sulfo group (vis vzeee), expands the palette of dyes for dyeing wool and polyamide with red shades, excelling in excellent elongation, uniformity and color fastness.

Description

The present invention relates to a new 1: 2 chromocomplex azo dye for dyeing wool and polyamide.

For dyeing wool and polyamide, not weakly acid to neutral lines and use * if ee * requires dyeing to dry out 1 wet fastness * melt * 1: 2 mstalekemplexml and dyes. The luminance co-ordinating complexes of the nuclear metal atom and co-ordinating number 6 (and most commonly cobalt heavens) and two equally different e, β-hydroxy-, e -hydroxy-, ε-carbexy- or e -hydroxy-ε-amine-dyes. The permeability of the dye 1: 2 to the complex dyes - if no lyefilal substituents are carried - is very low, and for practical application to a textile material from a scientific environment, it is necessary to convert them in advance into fine forms by dispersion milling.

Another aspect of its treatment for use in practical dyeing is to increase solubility by appropriate substitution. Known are 1: 2 metal-complex dyes which have been selected by non-oligogenic * residuals, which will have lower substituents such as sulfamyl or metha-sulfonyl groups, for example. However, the production of these dyes is relatively expensive. The same dyeing qualities and in achieving rich shades of dskeaes and results have been achieved in some cases by the use of dyes selected from sulfo groups. The inclusion of 1: 2 sulfosulfide dye is not a problem for the problem · Meanwhile, the 1: 2 complexes substituted with meegegeamic complexes are basically salts of monohydric acids * increases the sulfo group's substrate with a negative charge of colored anions as well as pull. The dyeing behavior is influenced not only by the electric charge * but also by the substitution topography and the spatial arrangement of the color complex molecule.

It has now been discovered that wool and polyamide dye with red hues and high dyeing power * excellent ductility, leveling * as well as β high dyeing fastness red 1: 2 ehremekemplex azo dye according to the invention * formula

Ί Ί © Θ

where Xj. S0 ₃ is Cl, 9, SO ^ js * F Cl FIF

Xj jo SOg »

X 1 is SO 2, 1102 Cl, H,

X 1 is K ₂ , 9

Σ _χ SO SOj and Xg Cl Cl, is X ₃ Η X, X * - Cl.H, 1 $ H H, Xg - NOg,

X ^ «30 ^ and Xg« 9, is Xg * NOg, X ^ Cl, 9, Xg * Cl, 9, Xg → 9,

Xg «SOj and Xg · OL, J · X ₁ « C1, H, Xj - 9, x ₄ - ho ₂ , ci, Xg - 9,

Xg - SO3 and Xg 9, X1 - Cl, 9, Xg - 9, X * - UOg.Cl, Xg - BOg,

X 1 is SOg and X 1 is Cl, X 1 is Cl, 9, X 1 is Cl, 9, X g is H, X g is 9,

X ₄ · SOg and Xg · H, is X ^ · Cl, 9, Xg Cl, 9, Xg 9, Xg * 90g ·

The dye according to the invention can be prepared either by chromating the corresponding monoazo dye in an acidic medium to a chromium complex 1: 1 followed by coordination in neutral to alkaline medium and the corresponding unsulfonated monoazo dye, or by co-chromating aaial of these monoazo dyes in an alkaline medium by one of the known methods described in the literature, e.g. , with a great ealicylic acid complex.

Example 1

52.3 .mu.l (0.1 mol) of a tremendous 1l monoazo dye complex 5-nitro-2-aminophenol -> 1- (4-Bulphophenyl) -3-methyl-5-pyrazoloa in the form of a filter cake paste is gradually added to 500 ml of sodium alkaline coupling suspension 0.1 mol monoazo dye 4-chloro-2-aminophenol 1-phenyl-3-methyl-5-pyrazolone heated to 80 ° C. After 3 to 5 hours heating at 80 to 85 ° C, a dark red solution of a mixed 1: 2 tremendous complex is formed, from which the dye is isolated by evaporation · 120 g of a strong dye, dye wool and PAD neutral red are obtained ·

Example 2

51.3 g (0.1 mol) of the tremendous 4-chloro-2-aalnopheaol-1 (3-sulfophenyl) -3-methyl-5-pyrazolone monoazo dye complex in the form of a filter cake paste in succession into a sodium-alkaline coupling suspension 0.1 mole of monoazo dye 5-nitro-2-aminophonol -> 1-phenyl-3-methyl-5-pyrasolene heated to 90 ° C · After a few hours of heating to 90 ° C a dark red solution of a mixed 1: 2 tremendous complex forms with Isolate dye by salting out of o and 10-15% salt by volume · Get £ 119 dye which dyes wool and PAD neutral

Example 3

52.3 g (0.1 mol) of chromium III of the 6-nitro-2-aminophonol-4-sulfoacid menesonium complex and > 1-phenyl-3-methyl-5-pyrazolone as a paste so. successively introducing into the sodium alkaline suspension after coupling of the isolated 5-nitro-2-aminophenol monoazob 1-phenyl-3-methyl-5-pyrazelon, heated to 80-85 ° C. After heating for several hours at 80 DEG-85 DEG C., a dark red solution of the mixed chromium complex 12 with which the dye is isolated by evaporation is obtained. 117 8 of a strong dye are obtained which dyees wool and PAD neutral to Servan.

Example 4

51.3 8 (0.1 mol) of the enormous 1 L monoazo-dye complex 4-chloro-2-amiaophenol-6-sulfocyanine -> 1-phenyl-3-methyl-5-pyrazolone as a paste in a sodium alkaline suspension 0.1 mole of 4-N-methyleulfamoyl-2-α-nophenol-1-phenyl-3-methyl-5-pyraselon moaeaso dye, heated to 90 ° C. After a few hours of heating to 90-95 ° C, a red solution of the mixed lithium complex was formed. The dye is isolated by evaporation *. It gets DCs of 8 8 of a strong dye, coloring wool and PAD yellowish Servan.

Claims (1)

SUBJECT OF THE INVENTION Red 1: 2 threatens the comploxal azo color of the general formula