[article]
| Titre : |
Aqueous finishing of leather : Products, processes and problems |
| Type de document : |
texte imprimé |
| Auteurs : |
Wolfang Wenzel, Auteur |
| Année de publication : |
1991 |
| Article en page(s) : |
p. 442-455 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
These days, ecology is a matter of top priority in many countries.Even in areas where less importance is placed on the environment,it is only a matter of time before the problems of effluent, exhaust air and waste disposal will have to be solved before permission is given for the operation of production facilities.Some industrialized countries already have extremely stringent statutory regulations on pollution of ground water and air.The leather industry,which is dependent on the use of a wide variety of chemicals,is particularly hard hit by such regulations,in both the wet processing and finishing sectors.This paper looks at finishing systems that have little or no impact on the air.
The main ecological problem connected with leather finishes is the use of organic solvents,especially in "effect" finishes and topcoats,where they are needed to dissolve the polymers used.Once the solvents have fulfilled their function in the application of the finish,they have to be removed from the finish layer and the leather.Whether this occurs in the spraying booth,the drying tunnel or by evaporation in air, all the solvents used are released into the air over a given time.
Instead of cleaning the waste air the most promising alternative is the use of aqueous systems.
How far advanced are aqueous systems and what are the main problems that still have to be solved?
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| En ligne : |
https://drive.google.com/file/d/1GPQrku-DjyKV0vAqpIcUToixwCpeW-8R/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8421 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVI, N° 11 (11/1991) . - p. 442-455
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