The evaluation of printability and non-enzymatic NADH reduction of 4'-chlorophenylazo-2-naphthol for use as a printing pigment / M. Oktav in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B3 (09/2005)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B3 (09/2005) . - p. 185-188 Titre : The evaluation of printability and non-enzymatic NADH reduction of 4'-chlorophenylazo-2-naphthol for use as a printing pigment Type de document : texte imprimé Auteurs : M. Oktav, Auteur ; M. Ulgen, Auteur Année de publication : 2005 Article en page(s) : p. 185-188 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chromatographie en phase liquide à hautes performances Colorants azoïques Colorimétrie Dispersions et suspensions Encre d'imprimerie Formulation (Génie chimique) Papier et carton couché Pigments Réduction (chimie) Vernis Index. décimale : 667.9 Revêtements et enduits Résumé : The printability of 4'-chlorophenylazo-2-naphthol (CPAN) was evaluated on gloss-coated paper. The preliminary results indicated that the proposed pigment could be used in offset and oil-based ink production. The pigment and its potential reduction product, 4-chloroaniline, were then separated by a reverse phase high-pressure liquid chromatography system. The pigment was incubated with NADH at 37°C for half an hour at different pH values to investigate its possible reduction into the corresponding primary amines (ie 4-chloroaniline and 2-amino-1-naphthol). However, no reduction was observed. This finding indicates a desirable evidence for the pigment in terms of its stability against NADH (nicotinamide adenine dinucleotide), a known biochemical reducing agent in living organisms when the potential toxicity from aromatic primary amines is considered. Note de contenu : - Preparation of 4'-chlorophenylazo-2-naphthol (CPAN) - Preparation of the ink dispersions and the printing experiment - High-performance liquid chromatography liquid chromatography and reaction of CPAN with NADH - Table 1 : Printing ink formulation - Table 2 : Varnish composition - Table 3 : Some colour properties of CPAN on gloss-coated paper DOI : 10.1007/BF02699571 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699571.pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5414 [article]

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