Results 251 to 260 of about 58,947 (291)
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Dyes and Pigments, 2016
Abstract Any liquid azo dyes, in which auxochrome such as dialkylamino, alkoxy, and amino group is attached in a molecule, were produced. In a series of 2-alkyl-4’-(dimethylamino)azobenzenes, the butyl, hexyl, octyl, and dodecyl derivatives were liquid at room temperature, whereas the propyl, 1-methylethyl, 1-methylpropyl, 1,1-dimethylethyl, and ...
Siddanagouda Biradar +7 more
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Abstract Any liquid azo dyes, in which auxochrome such as dialkylamino, alkoxy, and amino group is attached in a molecule, were produced. In a series of 2-alkyl-4’-(dimethylamino)azobenzenes, the butyl, hexyl, octyl, and dodecyl derivatives were liquid at room temperature, whereas the propyl, 1-methylethyl, 1-methylpropyl, 1,1-dimethylethyl, and ...
Siddanagouda Biradar +7 more
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Acta Polymerica, 1987
AbstractA series of new polymerizable azo dyes containing the methacryloyloxy group were prepared. Their melting points, yield, colour, solubility and absorption in the UV‐visible range were characterized, and the relationship between their properties and structure was evaluated. The characteristics of radical homopolymerization of one of the azo dyes,
F. Hrabák +5 more
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AbstractA series of new polymerizable azo dyes containing the methacryloyloxy group were prepared. Their melting points, yield, colour, solubility and absorption in the UV‐visible range were characterized, and the relationship between their properties and structure was evaluated. The characteristics of radical homopolymerization of one of the azo dyes,
F. Hrabák +5 more
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Heterocyclic azo dyes. IV. Azo Dyes Containing the Quinoline Nucleus
Journal für Praktische Chemie, 1973AbstractThe synthesis, some dyeing and fastness properties of several new monoazo dyes derived from 6‐amino‐ and 6‐hydroxy‐quinolines when applied as dispersed dyes on nylon 6 are described. Preliminary correlations between light fastness and chemical structure are attempted.
M. Kamel +2 more
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Carcinogenic azo dyes, dye-binding and liver glutathione
Biochemical Pharmacology, 1964Abstract Good correlations have been found between the relative carcinogenic activities of azo dyes and the ability of these compounds to increase the liver glutathione (GSH) content and to form bound dye (B.D.) in the livers of male rats 24 hr after intraperitoneal (i.p.) injection of equimolar amounts of the dyes.
W J, NEISH, H M, DAVIES, P M, REEVE
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Spectroscopic ellipsometry investigation of azo dye and azo dye doped polymer
The European Physical Journal Applied Physics, 2006The optical constants of azo dye (Methyl Red (MR)) and azo dye doped polymer (ADP) (Polymethylmethacrylate (PMMA)) MR/PMMA have been investigated using Variable Angle Spectroscopic Ellipsometry (VASE). Pure MR was modeled using Lorentz formula with three oscillators. A Bruggmann effective medium approximation layer was employed with three constituents (
O. Taqatqa, H. Al Attar
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Multiple azo disperse dye sensitization mainly due to group sensitizations to azo dyes
Contact Dermatitis, 1996A female patient, with a previous episode of contact dermatitis caused by a blue dress developed similar dermatitis due to a navy ‐blue dress. Patch tests revealed multiple allergic positive reactions to paraphenylenediamine (PPD). The navy‐blue dress, its extracts, 6 azo disperse dyes in a textile series, as well as 3 dye components, including ...
M, Nakagawa, K, Kawai, K, Kawai
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Heterocyclic azo dyes. I. Azo Dyes Containing the Benzotriazole Nucleus
Journal für Praktische Chemie, 1967AbstractThe synthesis, some dyeing, and fastness properties of several new dispersed, acid, and direct dyes derived from the aminobenzotriazoles (I–IV) and 5‐hydroxybenzotriazole (V) are described. The suitability of the amino derivatives (I–IV) as bases for azoic dyeing has also been studied.
M. Kamel, S. Sherif, M. M. Kamel
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Bioreactors for Azo-Dye Conversion
2010This chapter embodies two sections. In the first section a survey of the state of the art of azo-dye conversion by means of bacteria is presented, with a focus on reactor design and operational issues. The relevance of thorough characterization of reaction kinetics and yields is discussed.
OLIVIERI, GIUSEPPE +3 more
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Macromolecular Symposia, 2015
SummaryFast photoswitching azobenzene molecules were incorporated into isoflavone moieties. These molecules exhibit a liquid crystalline nematic state at certain temperature intervals. UV/Vis spectrophotometry investigations on solutions reveal that E/Z conversion takes place around 1 s, whereas thermal back relaxation, namely Z/E, takes around 6 min ...
Gurumurthy Hegde +3 more
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SummaryFast photoswitching azobenzene molecules were incorporated into isoflavone moieties. These molecules exhibit a liquid crystalline nematic state at certain temperature intervals. UV/Vis spectrophotometry investigations on solutions reveal that E/Z conversion takes place around 1 s, whereas thermal back relaxation, namely Z/E, takes around 6 min ...
Gurumurthy Hegde +3 more
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The Journal of Organic Chemistry, 1950
The dyeing properties and the lightfastness on cellulose acetate rayon of several azo dyes prepared from m-trimethylsilyl- and m-triphenylsilyl-N,N]- bis- (β-hydroxyethyl)-aniline have been examined.The dyes derived from m-triphenylsilyl-N,N-bis-(β-hydroxyethyl)-aniline have been found to lack substantivity for cellulose acetate and to have inferior ...
S. V. SUNTHANKAR, HENRY GILMAN
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The dyeing properties and the lightfastness on cellulose acetate rayon of several azo dyes prepared from m-trimethylsilyl- and m-triphenylsilyl-N,N]- bis- (β-hydroxyethyl)-aniline have been examined.The dyes derived from m-triphenylsilyl-N,N-bis-(β-hydroxyethyl)-aniline have been found to lack substantivity for cellulose acetate and to have inferior ...
S. V. SUNTHANKAR, HENRY GILMAN
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