Azo disperse dyes for synthetic fibres. I: 2‐Methyl‐ and 2‐phenylquinazolone derivatives

Abstract

Ten variously substituted derivatives (IVa–j) of 4′(quinazol‐4‐on‐3‐yl) azobenzene were prepared. The effects of the nature and orientation of the substituents on the colour and dyeing properties of these dyes on polyester and acrylic fibres were evaluated.

Synthesis, characterization and spectroscopic properties of some new phenylazo-6-aminouracil

“…For this purpose, the absorption spectra of phenylazo-6-aminouracil dyes (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17) were measured in various solvents at a concentration of approximately 10 -6 -10 -8 M and were run at different concentrations. The dyes were not fully dissolved, and any insoluble material in all solvents was filtered off.…”

“…Azo dyes represent the largest group of disperse dyes in textile industry, which are used in the dyeing of synthetic fibres. In addition, some azo dyes were the most widely used in various fields, such as high-technological systems, the coloring of different materials, colored plastics and polymers, biological-medical studies and advanced organic synthesis [12][13][14][15][16][17][18][19][20]. Synthesis and properties of some azopyrimidines and their complexes were described in several publications [21][22][23][24].…”

Synthesis, spectral characterization of azo dyes derived from calix[4]resorcinarene and their application in dyeing of fibers

“…More than half the dyes in commercial use are azo dyes. It has been known for many years that azo compounds are most widely used class of dyes due to their versatile application in various fields such as the dyeing of textile fiber, the coloring of different materials, colored plastics, biological-medical studies and advanced application in organic synthesis [32][33][34][35]. There have been few reports wherein macrocycles such as crown ethers [36] and calixarenes [37][38][39][40] have been used as components for the preparation of azo dyes but the research in the area of azocalix [4]resorcinarene dyes [41] is still in infancy.…”

Synthesis of some novel bis(hetaryl)azo disperse dyes and investigation of their absorption spectra

“…1 H NMR spectra were recorded on a Bruker-Spectrospin Avance DTX 400 Ultra-Shield in DMSO-d 6 and CDCI 3 . Chemical shifts are expressed in δ units (ppm).…”