Coloured Polyesters Containing Imidazolone Ring System
Titel:
Coloured Polyesters Containing Imidazolone Ring System
Auteur:
Modi, B. J. Patel, R. G. Patel, V. S.
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 40 (1998) nr. 3-4 pagina's 219-227
Jaar:
1998-06-01
Inhoud:
Coloured polyesters (PD1-5) have been synthesized by interfacial polycondensation reaction of terephthaloyl chloride and various bisazo diols derived form 1-(4-hydroxyphenyl)- 2-phenyl-4-(4-hydroxybenzylidene)-5-imidazolone by coupling with various diazotized fast bases. All the coloured polyesters were characterized by elemental analysis, IR spectroscopy, UV-visible spectroscopy, viscometry, solubility, bleeding test and thermogravimetric analysis. The bisazo diols (dyes) were applied on nylon and polyester fabrics and their dyeing performance has been assessed. These dyes showed fair to good fastness to light and very good to excellent fastness to washing, rubbing, perspiration, and sublimation.