Dyeing of wool

To overcome hydrolysis of vinyl sulfone dyes during appHcation under neutral dyeing of wool, Hoechst introduced dyes with the /V-methyl taurine... 

Schwefel-einschlag, m. sulfur match (for casks) sulfuring (of casks), eisen, n. iron sulfide (usiially ferrous sulfide, Iron(II) sulfide), -entfernung,/. removal of sulfur, desulfurization. -erz, n. sulfur ore. -faden, m. sulfured wick, sulfur match, -farbe, /. sulfur color sulfur dye (of wool) stoved shade. 

Many of the premetallised 1 1 chromium-dye complexes introduced from 1915 onwards for the one-bath dyeing of wool at low pH were o,o -dihydroxyazo compounds containing chelated chromium (III) ions. Typical examples still in use today include Cl Acid Orange 74 (5.18) and other azopyrazolones ranging in hue from yellow to bluish red, as well as... 

The same naphthylazo-2-naphthol ligand grouping is present in the 1 1 complex Cl Acid Black 52 (5.53 M = Cr) and its symmetrical 1 2 analogue Black 172 (5.54 M = Cr), which are both widely used in the dyeing of wool. The corresponding 1 1 and 1 2 complexes of trivalent iron (M = Fe) have been synthesised and their properties compared with the... 

CHROMIUM-RELATED PROBLEMS IN THE MORDANT DYEING OF WOOL... 

The versatility of this system is reflected in its suitability for blends of wool with other fibres [89]. The ideal conditions for the dyeing of wool/acrylic blends are at pH 4-5 and Albegal SET inhibits the risk of co-precipitation between Lanaset anionic dyes and basic dyes. Lanaset dyes are quite stable when dyeing polyester/wool at pH 4-5 and 115-120°C using Irgasol HTW (Ciba) as wool protectant. These dyes are also suitable for dyeing wool in its blends with silk, nylon or cellulosic fibres. 

The effect of this additive on the conventional dyeing of wool with the anthraquinone sulphatoethylsulphone dye Cl Reactive Blue 19 (7.37) was investigated. 

Introduction 231 Fundamental concepts 233 Electronic structure of transition-metal ions 235 Structural characteristics necessary for complex formation 240 Preparation of metal-complex colorants 248 Isomerism in metal-complex dyes 260 Stability of metal-complex dyes 261 Chromium-related problems in the mordant dyeing of wool 268 References 277... 

A mixture of the normal and acetic salts used as a mordant In the dyeing of wool. c mon-ycm asm,tat ... 

Ammonium acetate is used for preserving meats as a mordant in the dyeing of wool in analytical chemistry for standardization of electrodes, and in titra-... 

The recipes are almost exclusively devoted to the dyeing of wool. The colors range from purples and reds to rose, yellow, green and blue, though the greater number of recipes have to do with purple. That term with the ancients, included deep red and even red brown as well as purples proper. 

Iron(II) complexes of 7-nitroso-6-hydroxyindazoIes (203) are sufficiently soluble in water to permit the dyeing of wool and polyamide fibres in green to olive shades having good fastness properties from weakly addic dyebaths. Cationic iron(H) complexes (204) have also been prepared from quatemized indazoles of this type but have found little or no commercial application. 

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