| Titre : |
Water-based anionic sulfonated melamine formaldehyde condensate oligomer as retanning agent for leather processing |
| Type de document : |
texte imprimé |
| Auteurs : |
S. N. Jaisankar, Auteur ; Sanjeev Gupta, Auteur ; Y. Lakshminarayana, Auteur ; J. Kanakaraj, Auteur ; Asit Baran Mandal, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
p. 289-296 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
This work deals with the synthesis of water-based anionic sulfonated melamine-formaldehyde condensate (SMFC) with very low free formaldehyde content by sequential formulation. The structure of the oligomeric SMFC has been confirmed using spectroscopic methods like FTIR and UV. Molecular weight of the condensates was determined by Gel permeation chromatography (GPC). These oligomers were then evaluated as retanning agents. Chrome tanned wet blue leathers were treated with SMFC in different proportions (1, 2 and 3% based on shaved weight) to optimize the use of the product for physical properties of leather including fullness and dye uptake. Further, the leathers were subjected to conventional dyeing and fatliquoring processes. Control experiments without SMFC were also undertaken to judge the efficacy of the product. The results showed that SMFC treated leather exhibited improved grain tightness, softness, fullness and dye uptake in the resultant leather. The most important aspect of the product was very low (<10 ppm) free formaldehyde content in the treated leather. |
| En ligne : |
https://drive.google.com/file/d/1XpVC-h9MTVrHOFsUJZP86n_uBKqA-x0K/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10507 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CV, N° 9 (09/2010) . - p. 289-296
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