| Titre : |
The application of catalysts and other additives to epoxy pretannage of hide |
| Type de document : |
texte imprimé |
| Auteurs : |
Mineo Masuoka, Auteur ; Masashi Makamura, Auteur |
| Année de publication : |
1987 |
| Article en page(s) : |
p. 127-133 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Additifs
Catalyseurs
Composés organiques
Cuirs et peaux
Epoxydes
Prétannage
Tannage synthétique
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
The acceleration effect of catalysts and other additives on the rise in the shrinkage temperature of hide treated with various multifunctional, water-soluble, epoxy resins was investigated in order to obtain information on a new pre-tanning method without chrome. The wet acetone-dehydrated hide specimen was treated with 10% epoxy resin (on the wet hide weight) at 35°C. The catalysts, 2,4,6,-tris(dimethylaminomethyl)phenol and dimethylaminopropylamine, both show an acceleration effect on the rise in the shrinkage temperature of the treated hide. Processing with the combined catalyst of 2,4,6-tris(dimethylaminomethyl)phenol and salicylic acid can markedly raise the shrinkage temperature over 80°C after 10 h. The epoxy resins, which have higher functionality or lower molecular weight, can rapidly raise the shrinkage temperature. Additives, such as methanol and ammonia, contribute to raising the shrinking temperature considerably. On the other hand, acids and anions show a negative effect upon it. |
| Note de contenu : |
- EXPERIMENTAL : Hide Preparation - Epoxy resins, catalysts, and other agents - Epoxy treatment and T measurement
- RESULTS AND DISCUSSION : Effect of Catalysts on T - Effect of molecular weight and functionality of resins on Ts - Effect of Concentration and Final pH on Ts - Effect of Other Additives on Ts -
- Table 1 : Chemical structure and molecular weight of epoxy resins used
- Table 2 : Chemical structure of catalysts and accelerator processed |
| En ligne : |
https://drive.google.com/file/d/13EBEb1DL8whL-oW6awyrNaO9KvWZXngS/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40125 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. N° 71 (Année 1987) . - p. 127-133
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