| Titre : |
A new pretannage with glyoxal and N-thioureidopyromellitamic acid for high exhaust chrome tannage |
| Type de document : |
texte imprimé |
| Auteurs : |
Hongru Wang, Auteur ; Xiang Zhou, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 81-85 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
A new compound, N-Thioureidopyromellitamic acid, has been synthesized from pyromellitic dianhydride and thiosemicarbazide, and used in pretanning along with glyoxal to improve chromium uptake. The results show that the pretanned pelt has a higher shrink temperature than conventionally processed pelt and subsequent chrome tanning results in a significant increase in chromium uptake, and thus the chrome offer in conventional chrome tanning can be reduced in large amounts. Furthermore, because of higher shrink temperature of the pretanned pelt, the initial temperature of two stage chrome tanning is raised and thus a much higher exhaustion of chromium is obtained at the elevated tanning temperature. The handle and the physical properties of pretanned crust leather are not much different from those of crust leather made from pelts that were not pretanned. |
| En ligne : |
https://drive.google.com/file/d/1_bY8n9FacI7mfqrJS_B7YQ4RRH2_q6lR/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4018 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 3 (03/2006) . - p. 81-85
Aller sur edunet
Accueil
A new pretannage with glyoxal and N-thioureidopyromellitamic acid for high exhaust chrome tannage in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 3 (03/2006)
