| Titre : |
Improvement of light fastness of natural dye : effect of ultraviolet absorbers containing benzotriazolyl moiety on the photofading of red carthamin |
| Type de document : |
texte imprimé |
| Auteurs : |
Hironori Oda, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 108-113 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Absorbeurs de rayonnement ultraviolet
Benzophénones
Benzotriazole
Pigments végétaux
Résistance au rayonnement ultraviolet
Rouge carthamine
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
While the contribution of ultraviolet absorbers to synthetic dyes has been investigated by several workers, there have been few studies pertaining to the use of functional ultraviolet absorbers as a means of improving the light fastness of natural dyes. In this paper, numerous potential ultraviolet absorbers were prepared to prolong the life of natural dye carthamin. The effects of these compounds in reducing photofading were examined on a polymer substrate. The use of commercial ultraviolet absorbers was not necessarily useful in improving the light fastness of the colour. However, benzophenone-type ultraviolet absorbers containing a built-in ultraviolet absorber moiety markedly retarded the photofading rate. It is proposed that 2,2′,4,4′-tetrahydroxy-5-methylbenzotriazolylbenzophenone and its derivatives may be used as effective stabilisers in the fading of natural dyes. |
| Note de contenu : |
- EXPERIMENTAL : Materials - 5-(2H-benzotriazole-2-yl)2,2', 4,4' - tetrahydroxybenzophenone - Photofading procedure
- RESULTS AND DISCUSSION : Properties of UV absorbers - Effect of additives on the photofading of carthamin - Effect of dibenzotriazolyl derivatives on the photofading of carthamin |
| DOI : |
10.1111/j.1478-4408.2011.00352.x |
| En ligne : |
http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00352.x/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14883 |
in COLORATION TECHNOLOGY > Vol. 128, N° 2 (2012) . - p. 108-113
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