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389 Aktuelle Fachpublikationen in Coloration Technology

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Surface properties of tannin‐impregnated and varnished beech wood after exposure to accelerated weathering

15.05.2017 | Mesut Yalcin, Huseyin Pelit, Caglar Akcay, Nevzat Cakicier, Coloration Technology, 2017

The aim of this study was to determine selected surface properties of varnished beech wood impregnated with natural extracts after exposure to accelerated weathering. Beech wood samples were impregnated with aqueous solutions of 5 and 10% mimosa (Acacia mollissima) and quebracho (Shinopsis ...

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Ionic‐liquid‐assisted mixed alkali system for reactive dye fixation in a batch process – optimisation through response surface methodology

15.05.2017 | Umesh B. Kore, Sanjeev R. Shukla, Coloration Technology, 2017

An ionic liquid, choline hydroxide, was synthesised and used in a mixed alkali system for fixation of homobifunctional reactive dyes. Its molecular structure was confirmed using FTIR, 1H NMR, and 13C NMR spectroscopy. Response surface methodology was employed to optimise the dyeing conditions ...

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Low‐temperature dyeing of meta‐aramid fabrics pretreated with 2‐phenoxyethanol

10.05.2017 | Dan Sheng, Yunli Wang, Xin Wang, Xuefeng Lu, Shan Jiang, Heng Pan, Genyang Cao, Weilin Xu, Coloration Technology, 2017

In this study, meta‐aramid fibres were pretreated with 2‐phenoxyethanol under different conditions to investigate the effect of 2‐phenoxyethanol on the dyeing of aramid at low temperature (95 °C). Structural alteration of the pretreated fibres was reflected by thermogravimetry and Fourier ...

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Tautomerism, crystal structure, and copper(ii) complexation of pyridonylazo dyes derived from methyl 4‐aminobenzoate

10.05.2017 | Ya‐Nan Feng, Yue‐Hua Wang, Yun‐Hong Liu, Hui‐Fen Qian, Wei Huang, Coloration Technology, 2017

Four heterocyclic dyes, derived from methyl 4‐aminobenzoate and pyridine‐2,4‐dione components, with different N‐substituents in the latter [CH3, CH2CH3, CH2CH2OH, CH2CH2CH2OCH(CH3)2], were synthesised by the traditional diazotisation‐coupling strategy. Furthermore, a Cu(ii) dye–metal complex was ...

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An innovative approach to the preparation of coloured and multifunctional silk material with the natural extracts from chestnut shell and black rice bran

29.03.2017 | Yanmei Jia, Hongwu Jiang, Zhimei Liu, Ruili Wang, Coloration Technology, 2017

In order to reutilise the byproducts of foods and crops to benefit the environment and economise on resources, the natural extracts from chestnut shell and black rice bran were applied in the simultaneous dyeing and multifunctionalisation of silk fabrics. In this work, the influence of pH value ...

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Experimental and theoretical insight into the electronic properties of 4‐aryl‐5‐arylazo‐3‐cyano‐6‐hydroxy‐2‐pyridone dyes

22.03.2017 | Vesna D. Vitnik, Željko J. Vitnik, Bojan Đ. Božić, Nataša V. Valentić, Sanda P. Dilber, Dušan Ž. Mijin, Gordana S. U ..., Coloration Technology, 2017

In this paper, spectroscopic and quantum mechanical investigation of nine 4‐aryl‐5‐arylazo‐3‐cyano‐6‐hydroxy‐2‐pyridone dyes was performed, and obtained density functional theory (DFT) results were compared with experimental data. The structural and spectroscopic properties of azo‐2‐pyridone ...

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Decolorisation by Bacillus flexus of exhausted dyebaths containing CI Acid Red 249 and their reuse for wool dyeing

14.03.2017 | Neha D. Parmar, Sanjeev R. Shukla, Coloration Technology, 2017

A dyebath containing left‐over CI Acid Red 249 after dyeing of wool was completely decolorised using an isolated bacteria Bacillus flexus. Optimisation was carried out by varying the pH, temperature, dye concentration, and microbial loading. Complete decolorisation of a 50 mg l−1 dye solution ...

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Novel heterogeneous photocatalysts prepared with waste wool and Fe3+ or Cu2+ ions for degradation of CI Reactive Red 195: a comparative study

16.02.2017 | Guixin Cui, Yongchun Dong, Yingchao Li, Weifeng Shen, Zhenlei Chen, Coloration Technology, 2017

In order to reuse waste wool, two transition metal ions, Fe3+ and Cu2+, were coordinated to with it to prepare a series of metal–wool complexes as new heterogeneous Fenton photocatalysts for the degradation of a typical azo dye, CI Reactive Red 195, in aqueous solution. The effect of the initial ...

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Optimising the anionisation of cotton with 3‐chloro‐2‐hydroxy‐1‐propanesulphonic acid sodium salt for dyeing with basic dyes

07.02.2017 | Sha Fu, Matthew J. Farrell, Peter J. Hauser, Coloration Technology, 2017

To enable the dyeing of cotton with basic dyes, cotton fabrics were anionised using 3‐chloro‐2‐hydroxy‐1‐propanesulphonic acid sodium salt (CHPSAS). The anionisation efficiency of three typical textile processing application methods has been investigated, including cold pad‐batch, pad‐dry‐cure, ...

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Naphthoylenebenzimidazolone dyes as one‐component photoinitiators

02.02.2017 | Rafał Strzelczyk, Radosław Podsiadły, Coloration Technology, 2017

The appropriate substituents have been added to a 7H‐benzimidazo[2,1‐a]benz[de]isoquinolin‐7‐one skeleton in order to obtain a one‐component initiator system. The absorption, fluorescence, and electrochemical properties of these naphthoylenebenzimidazolone dyes and their usefulness as visible ...

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