[PDF] Top 20 Theodor Adorno: a crise da crítica da comunicação
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Synthesis and Dyeing Performance of Some New Disperse Dyes Based on Coumarin Moiety
... The synthesis of coumarins and their derivatives have attracted considerable attention from organic and medicinal chemists for many years as a large number of natural products contain this heterocyclic ... See full document
29
SYNTHESIS AND DYEING PERFORMANCE OF 5 METHYL 2 AMINO THIAZOLE BASED MONOAZO DISPERSE DYES
... HTHP dyeing method. These dyes on fabric gave a colour varying from pink, orange to red with good levelness, brightness and ...all dyes was moderate to good and washing fastness, perspiration ... See full document
127
Synthesis, characterization and dyeing assessment of acid azo dyes based on 3 (2 amino thiazol 4 yl) coumarin on woolen fabric
... in dyeing textiles, leather, paper, food, cosmetic products (Zhi-Gang et ...azo dyes containing aromatic heterocyclic moiety have been investigated due to their wide ...azo dyes have been ... See full document
277
SYNTHESIS, SPECTRAL PROPERTIES AND DYEING PERFORMANCE OF ACID AZO DYES BASED ON 2 AMINO 4 (4’ CHLOROPHENYL)1, 3 THIAZOLE
... inthe synthesis of azo dyes is well established, and the resultant dyes exhibit brighter hues than those derived from aniline - based ...azo dyes. The freeform acid dyes are ... See full document
128
Synthesis, Spectral Properties and Applications of Some Mordant and Disperse Mono Azo Dyes Derived from 2-amino-1, 3-benzothiazole
... azo dyes molecule and easily undergo enzymatic breakdown in mammals including ...the synthesis of mono azo dyes containing benzothiazole moiety, to identify synthetic strategies in designing ... See full document
16
Studies on synthesis and dyeing performance of disperse azo dyes based on schiff base of ninhydrin and 4 amino phenol
... The chemistry of ninhydrin has been studied extensively. Much of the work has been directed toward the reaction of amines with ninhydrin[1,2]. Ninhydrin is a triketo compound used in the detection and estimation of amino ... See full document
7
Synthesis of Novel Acid Dyes with Coumarin Moiety and Their Utilization for Dyeing Wool and Silk Fabrics
... chemistry based on heterocyclic systems and studies in the synthesis of such derivatives have been reported ...the synthesis of azo dyes is well established, and the resultant dyes ... See full document
16
CONVENTIONAL AND MICROWAVE ASSISTED SYNTHESIS OF SOME NEW DERIVATIVES OF COUMARIN CONTAINING PYRAZOLINE AND INVESTIGATION OF THEIR ANTIBACTERIAL AND ANTIFUNGAL ACTIVITIES
... ABSTRACT: Pyrazoline derivatives, being used as potential medicinal agents, 3-Acetyl-2H-chromen-2one (I) was prepared by Knoevenagel condensation of salicyladehyde with ethylacetoacetate in presence of piperidine. A ... See full document
21
SYNTHESIS AND STUDIES OF MONOAZO DISPERSE DYES BASED ON 2, 4-DIHYDROXY-6-CHLORO QUINOLINE
... the dyes synthesized were purified by ...of some selected synthesized compounds has been carried out for the structural elucidation, particularly for the presence of protons and ...of disperse ... See full document
8
Novel Synthesis, Characterization of some New Substituted Coumarin and Schiff Base, Substituted benzo-coumarin and benzo-Schiff Base and Study of their Antibacterial Activities
... Coumarin is a simple oxygen containing heterocyclic compound, present in Melilot and Tonca bean. It is the Odoriferous Principle Wood-ruffs which led to its wide spread used as perfuming in chemical industry. ... See full document
66
Synthesis and performance studies of novel bisazo reactive dyes on various fibres
... reactive dyes have recently led to increased demands on the quality of the dyeing and the profitability of the dyeing ...reactive dyes which have improved properties, especially in respect of ... See full document
9
A Turn-On Fluorescence-Based Fibre Optic Sensor for the Detection of Mercury
... excellent performance: the decrease observed in the fluorescence intensity was 65% for carboxyfluorescein and 10%‒13% for iminocoumarin derivatives, again after 60 min of continuous illumination using a mercury ... See full document
21
Synthesis and Applications of Three Vinylsulfone Based Fiber-reactive azo Dyes for Dyeing Cotton Fabric
... reactive dyes showed optimum pH ...azo dyes for the cellulosic fiber; the outcome of the effect of dyeing temperature was ...reactive dyes, because of the lesser migrating power, cautious ... See full document
16
Modified magnetite nanoparticles with cetyltrimethylammonium bromide as superior adsorbent for rapid removal of the disperse dyes from wastewater of textile companies
... treating dyes in more concentrated form [15]. Also, especially based on environmental point of view, adsorption techniques do not lead to secondary sludge disposal problems ...against disperse and ... See full document
20
Preparation of Benzimidazole Based Coumarin Derivatives as Antimicrobial and Antioxidant Agents
... The aim of the present work was to afford benzimidazole-based coumarins as antimicrobial and antioxidant agents. The compounds 3a-3j were prepared by reaction the compounds 1a-1b with the compounds 2a-2e in ... See full document
42
Synthesis and biological activity of some new indole derivatives containingn pyrazole moiety
... Synthesis of 3-methyl-4-((substituted-2-phenyl-1H-indol-3-yl)methylene)-1H-pyrzol-5(4H)-ones (2a-b) 3-methyl-1H-pyrazol-5(4H)-one(1) (0.01 mol) and substituted-2-phenylindoles-3carboxaldehyde (1a-b) (0.01mol) were ... See full document
7
β Oxoanilides in heterocyclic synthesis : Synthesis of Some New Pyrimidine containing Sulphonamido moiety Derivatives
... Several new pyran (8), thiophene (9), pyrazole (14) and isothiocyanate derivatives (17,18) have been synthesized by the reactions of butanamide with 4-chloro-benzylidenemalonitrile, malononitrile and elemental ... See full document
7
Synthesis and Fastness Properties of Disazo Disperse Dyes Derived from 4-Amino-3-Nitrotoluene
... prepare some disazo disperse dyes of the general structure 1 that possessed the features needed for affinity for the most widely used synthetic fibre such as ...the dyeing properties such as ... See full document
17
Ecofriendly” synthesis, characterization and dyeing of azo based acid dyes on nylon fabrics
... these dyes are very good; this indicates that the dyes have good affinity and solubility with the ...these dyes on the ...each dyes thus proved to be eco-friendly. The dyes gave ... See full document
12
Imidazole mediated synthesis of spirooxindoles in water using isatin as a privileged scaffold
... This work discusses the synthesis of complex small molecules spirooxindoles using imidazole as an efficient organocatalyst. The three components coupling reactions of isatin, malononitrile, and enolizable 4- ... See full document
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