| Titre : |
The use of aluminium salts in tanning |
| Type de document : |
texte imprimé |
| Auteurs : |
Anthony D. Covington, Auteur ; R. L. Sykes, Auteur |
| Année de publication : |
1984 |
| Article en page(s) : |
p. 72-93 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
For more than 2000 years aluminium salts have been used in the production of leather and nineteenth century literature records processes where it was used in conjuction with both vegetable tans and chromium salts, yet in volume terms, relatively little aluminium is used by the leather industry today. Research at BLMRA has been motivated by :
1. Demand for a white leather as a substrate for dyeing.
2. Reduced environmental impact by replacing chrome.
3. Strategic concern over chrome supplies.
Developments to be described include :
The Semi-Alum Process - Vegetable tan followed by aluminium in regular commercial production gives leathers with shrinkage temperatures well over 110°C. The leather have a very high level of chemical and thermal stability making them particularly useful where extended service under arduous conditions is required.
Pure White Leathers - With shrinkage temperatures of about 100°C pure white leathers can be produced from combinations of polycarboxylic polymers and aluminium.
Sheepskin Garment Leathers - Using predominantly aluminium salts with 0.5-0.75% Cr2O3 the leathers have shrinkage temperatures in the region of 100°C and 99% utilisation of chromium has been achieved.
Pre-tannage of Bovine Stock - Pretannage with aluminium salts enables chromium offers to be reduced by 20% with no reduction in chromium content of the finished leather and a substantial reduction in sewered chrome. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9366 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXIX (Année 1984) . - p. 72-93
Aller sur edunet
Accueil
The use of aluminium salts in tanning in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXIX (Année 1984)
