| Titre : |
Wet-white based on an amphoteric polymer |
| Type de document : |
texte imprimé |
| Auteurs : |
Bi Shi, Auteur ; Jing Li, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 30-33 |
| Langues : |
Anglais (eng) |
| Catégories : |
Agents de tannage
Composés amphotériques
Cuirs et peaux de chèvres
Polymères
Wet-white (tannage)
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Chrome tanning is currently the dominant tannin system in the leather industry. In order to reduce chrome discharge, several new wet-white technologies have been developed in recent years They do not produce chrome containing solid wastes during splitting and shaving. Meanwhile, a lower offer and a higher uptake of agents or non-chrome metal tanning agents is also desired.
However, it is considered that the use of non-chrome metals often leads to an over tight handle in the resultant leathers. Therefore, aldehyde based organic tanning agents such as modified glutaraldehyde, organic phosphonium salt and oxazolidine, are commonly used for the production of wet-white leathers. A prominent feature of wet-white tanned with these organic tanning agents are their increased negative charge (lower isoelectric point). This will decrease the uptake of anionic chemicals such as dyestuffs and fatliquors during post-tanning processes and thus strongly influence the quality of leather. To solve this problem we synthesized an amphoteric polymer tanning agent (named APTA), as shown in Figure 1, and its performance as a wet-white tanning agent was investigated. |
| Note de contenu : |
- Effect of tanning pH and temperature on Ts
- Uptake of dyestuff and fatliquor
- Semi-chrome with APTA |
| En ligne : |
https://drive.google.com/file/d/1j3MCxN3kqhc-jkx8hEDzc4XC-yLnEoqc/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18393 |
in LEATHER INTERNATIONAL > Vol. 215, N° 4829 (04/2013) . - p. 30-33
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Wet-white based on an amphoteric polymer in LEATHER INTERNATIONAL, Vol. 215, N° 4829 (04/2013)
