| Titre : |
Colour and constitution relationships in organic pigments : Part 6 Azonaphtharylamide pigments |
| Type de document : |
texte imprimé |
| Auteurs : |
Robert M. Christie, Auteur ; M. Vincent, Auteur ; H. Y. Huang, Auteur ; H.-C. Chang, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 77-85 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Cristallisation
Diffractométrie de rayons X
Encre d'imprimerie
Pigments azoïques
Pigments organiques
Revêtements:Peinture
|
| Index. décimale : |
667.2 Colorants et pigments |
| Résumé : |
Colour and constitution relationships within a series of naphtholazo pigments have been established. The spectral properties of the pigments in solution correlate reasonably well with the results of optimised PPP-MO calculations, and the colouristic properties of the pigments in the solid and solution states show generally similar trends. Structure/property relationships, in terms of solvent resistance, lightfastness and thermal stability, have been established for the series of pigments in printing ink and industrial paint applications. X-ray powder diffraction studies demonstrate that the aqueous heat treatment used in the synthesis of the pigments provides enhanced crystallinity which generally leads in turn to improved colouristic and technical performance. |
| Note de contenu : |
- Materials
- Instrumental methods
- PPP-MO calculation
- Pigments from 2-naphthol
- Pigments 2, 3 and 4 from naphthol AS coupling components
- Printing ink and paint preparation
- Assessment of application performance
- Table 1 : Substituent pattern in naphtharylamide azo pigments 3 and 4
- Table 2 : Substituent pattern in naphthol AS coupling components
- Table 3 : Selected FTIR stretching frequencies (cm-1) and electronic spectral data (for solutions in dimethylformamide/1.4 % acetic acid
- Table 4 : Colour parameters for printing ink masstone drawdowns of pigment samples before (') and after heat treatment
- Table 5 : Colour parameters for printing ink white reduction drawdowns of pigment samples before (') and after heat treatment
- Table 6 : Overspray fastness (bleed into white oversprayed layer assessed as colour difference, 'E between the overpainted and white films) in thermosetting acrylic/melamine paints and heat stability (assesses as colour difference, 'E, between heated and unheated paint films) in air-drying alkyd paints
- Table 7 : Lightfastness in printing ink and thermosetting acrylic paints assessed as colour difference, 'E, between exposed and unexposed samples |
| DOI : |
10.1007/BF02699618 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/BF02699618.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5399 |
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 89, B1 (03/2006) . - p. 77-85
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Colour and constitution relationships in organic pigments : Part 6 Azonaphtharylamide pigments in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 89, B1 (03/2006)
