Formaldehyde in leather : causes and avoidance / G. Wolf in WORLD LEATHER, Vol. 15, N° 1 (02-03/2002)  

[article]  inWORLD LEATHER > Vol. 15, N° 1 (02-03/2002) . - p. 46-52 Titre : Formaldehyde in leather : causes and avoidance Type de document : texte imprimé Auteurs : G. Wolf, Auteur Année de publication : 2002 Article en page(s) : p. 46-52 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage Chromatographie en phase gazeuse Cuirs et peaux -- Analyse Extraction (chimie) Fixateurs (chimie) Formaldéhyde Formaldéhyde -- Elimination Formaldéhyde -- Toxicologie Nettoyage Séchage Substances dangereuses -- Elimination Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The demands placed on the ecological and toxicological performance of leather have increased in recent years. The problems posed by PCP and benzidine prompted a great deal of discussion in the early 1990s, and much attention is currently being paid to the issue of formaldehyde in leather. Formaldehyde and products based on formaldehyde are employed at the tanning and retanning stages, and they are an established part of the leather production process. They can also be employed in finishing, but their use is in decline. The increasingly stringent limits on formaldehyde in leather have had the effect of focusing attention on this problem, and these limits pose a great challenge to tanneries and suppliers of chemicals to the leather industry. Stringent limits on formaldehyde were first specified by international automobile manufacturers. Their lead was then followed by the international footwear companies, and it can be assumed that most manufacturers of leather and leather goods world-wide will be confronted with this problem at some time in the future. Note de contenu : - FORMALDEHYDE IN THE ENVIRONMENT - INDUSTRIAL APPLICATIONS FOR FORMALDEHYDE AND TOXICITY - THE BONDING OF FORMALDEHYDE IN LEATHER - ANALYSIS OF FORMALDEHYDE IN LEATHER : The gas phase method - The extraction method - LIMITS ON FORMALDEHYDE IN LEATHER - SOURCES OF FORMALDEHYDE IN THE MANUFACTURE OF LEATHER : Direct and concealed sources - Synthetic tanning agents and resins - ELIMINATING FORMALDEHYDE FROM LEATHER : Avoiding formaldehyde in leather - Modifying mechanical processes - The incorporation of formaldehyde scavengers - MODIFICATION OF PRODUCTS THAT RELEASE FORMALDEHYDE : Resins in combination with other agents - Modified resin tanning product - Fig. 1 : Formaldehyde in the Environment - Fig. 2 : Methods of analysis formaldehyde in leather - Fig. 3 : Gas phase and extraction methods in comparison - Fig. 4 : Formaldehyde in leather - Tanning agents in comparaison - Fig. 5 : The chemistry of synthetic tanning agents - Fig. 6 : The influence of the washing process - Fig. 7 : Influence of drying process - Fig. 8 : Applying organic formaldehyde scavenger - Fig. 9 : Applying inorganic formaldehyde scavenger - Fig. 10 : The residual formaldehyde contents of commercially available tanning agents - Fig. 11 : Resin tanning agents in combination with other products En ligne : https://drive.google.com/file/d/175Fux7Hg1Lep_MiNqAUK6sLHOEcBqV1a/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32196 [article]

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