| Titre : |
Overcoming the bisphenol hurdle |
| Type de document : |
texte imprimé |
| Auteurs : |
Marc Hombeck, Auteur ; Heinrich Francke, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
p. 48-50 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Bisphénols
Chimie industrielle -- Législation -- Pays de l'Union européenne
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuir dans les automobiles
Cuir sans bisphénols
Formulation (Génie chimique)
Produits chimiques -- Toxicologie
Syntans
Wet-white (tannage)
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
The European Chemical Agency (ECHA) has recently proposed a new regulation for the placing on the market of mixtures and articles containing bisphenols. If the draft is implemented without changes, this will - after various transition times - result in very low limits for these chemicals in leather auxiliaries and leather articles. When it comes to syntans, bisphenols are raw materials and unwanted side products, respectively. State-of-the-art production technologies for syntans might not succeed in lowering bisphenol content to the proposed limits, though. As syntans play an essentiel part in the production of almost all of today's leather articles, the new regulation will lead to a disruptive change in the selection of chemicals in common recipes. Zschimmer & Schwarz has anticipated this issue and presents the first solutions to achieve completely bisphenol-free leather. |
| Note de contenu : |
- Importance of syntans
- Fig. 1 : Structural comparison of the five bisphenols which are affected by the restriction and their relevance for the leather industry
- Fig. 2 : Possible timeline and limits according to the restriction proposal of ECHA
- Fig. 3a : Simplified reaction pathway towards sulphone-based syntans
- Fig. 3b : Simplified reactionpathway towards phenol-based syntans
- Fig. 4 : Recipe for a bisphenol-free automotive wet-white crust leather
- Fig. 5 : PRoperties of the crust leather produced with the recipe shown in Fig. 4 |
| En ligne : |
https://drive.google.com/file/d/1see9tcfwKjazRZyH4P-plTUASCKpmDOZ/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39122 |
in INTERNATIONAL LEATHER MAKER (ILM) > N° 58 (03-04/2023) . - p. 48-50
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Overcoming the bisphenol hurdle in INTERNATIONAL LEATHER MAKER (ILM), N° 58 (03-04/2023)
