...H.Z. Shams; M.H. Helal; I.M. Samir; R.M. Mohareb Purpose The purpose of this paper is to evaluate the dyeing performance of newly designed and synthesised azo dye systems based on polyfunctionally substituted oxopyridine core for improved dyeing when applied to synthetic fibres. Design...

...). The mixture was refluxed for 1 h and then allowed to cool at an ambient temperature and then acidified with cold dilute hydrochloric acid. The resulting solid product was collected by filtration and crystallised from appropriate solvent. © Emerald Group Publishing Limited 2004 Dyes Synthetic...

... Synthetic fibres Polyfunctionally substituted heterocyclic systems are versatile percursors of technical importance especially for disperse dyes and pigments used for dyeing and printing of several substrates[1‐6]. This led to designing simple synthetic routes for pyrazole systems capable...

... MCB UP Limited 2001 Dyes Fabric Synthetic fibres Heterocyclic ring system compounds have received considerable attention from the industrial point of view as dyes for synthetic fibers (Shams, 1991; Shams et al., 1988, 1991). Derivatives of 3‐amino‐1,5‐dimethyl‐4...

... fabrics. © MCB UP Limited 2001 Dyes Fabric Synthetic fibres Heterocyclic compounds are versatile reagents which have recently been used as synthetic intermediates for disperse dyes (Elkholy et al., 1996 and 1998; De Criorgi and Rosorina, 1993; Chich Chien and Ing Jing, 1991...