| Titre : |
Covalent fixation of drum dyes on collagen |
| Type de document : |
texte imprimé |
| Auteurs : |
Gerhard Wolf, Auteur ; Harald Kiesow, Auteur ; Laszlo Somogyi, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 93-98 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Covalent fixation of performance chemicals on various substrates of natural or synthetic origin is a well-known and thoroughly investigated principle since decades. Taking a deeper look into the literature of collagen, though, there are only a few examples found to this topic. Immobilisation of process chemicals is of great importance for leather as well. Especially dyes play a crucial role, since their mobility within the substrate matrix my lead to visible staining of other materials upon contact. In order to meet these challenges in leather manufacturing a new dyeing concept has been developed: covalent fixation of drum dyes to the collagen fibre. The dyes react with collagen under mild alkaline conditions at moderately elevated temperatures, thus reaching a fixation rate of above 95%. Due to the fact that only covalently fixed dye molecules remain in leather, unprecedented fastness properties are achieved even on leather dyed to very deep shades. |
| En ligne : |
https://drive.google.com/file/d/1p_vfblOOzZvNwx4dqML7Vp18KB7iCr0r/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3365 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CII, N° 3 (03/2007) . - p. 93-98
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