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A survey of the most widely used and, according to many researchers, the most promising textile wastewaters decoloration methods is presented. Data on decoloration rates of different dye classes, obtained by means of different methods is gathered. Where known, values of the ecological parameter...
Some polysubstituted metal-free phthalocyanines have been synthesized and their structures confirmed by elemental analysis, IR and UV-Vis. Their crystal patterns were investigated by X-ray powder diffraction. The introduction of alkyloxy substitutes greatly improved their solubility in many...
The crude water extract of saffron stigmas ( Crocus sativus L.) as well as crocin, the yellow pigment isolated from Crocus sativus L. were used for dyeing cotton and wool fibres after enzymatic treatment. The dyeing results were compared with those obtained with another yellow natural pigment,...
The synthesis of several series of anthraquinone acid dyes containing carboxyl group is described. The dyes were dyed on polyester, wool, poly-amide, wool-polyamide and wool-polyester blends and their dyeing and fastness properties evaluated. The fastness properties of all the dyed samples were...
Benzidine Yellow G (C.I. Pigment Yellow 12) was successively modified through mixed coupling with sulfo derivatives of acetoacetanilide and fatty amines. The hydrocarbon chain of the fatty amine enclosed the polar sulfo groups, and properties such as flowability, wettability, and dispersibility...
Cyclic voltammograms and chronocoulometry were measured for soluble cobalt phthalocyanine derivatives and cobalt anthraquinocyanine which had been previously synthesized, in order to examine their electron transfer abilities and electrochemical mechanism in an organic solvent. Electron transfer...
Bathochromic thiazolylazo second-order nonlinear optical chromophores (NLOphores) having 2-hydroxyethyl group(s) in a molecule have been prepared. The tris(2-hydroxyethyl) derivatives showed the best relaxation behaviour among the non-, mono-, bis- and tris(2-hydroxyethyl) ones doped in...
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