Oxazolidine metal-free leather / M. Roig in LEATHER INTERNATIONAL, Vol. 214, N° 4823 (08/2012)  

[article]  inLEATHER INTERNATIONAL > Vol. 214, N° 4823 (08/2012) . - p. 16-20 Titre : Oxazolidine metal-free leather Type de document : texte imprimé Auteurs : M. Roig, Auteur ; V. Segarra, Auteur ; M. A. Martinez, Auteur ; M. Bertazzo, Auteur ; J. Ferrer, Auteur Année de publication : 2012 Article en page(s) : p. 16-20 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux Oxazolidine Tannage végétal Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In the traditional tanning process, which is used for over 90 % of leather tanned worldwide, basic trivalent chromium salts are used. However, in some cases, it may cause an allergy to chromium or even, under certain conditions, chromium can change its chemical characteristics, with considerable impact on human health and the environment. In recent years, INESCOP have been looking at oxazolidine, combined with other synthetic or vegetable tanning agents to provide high quality leather for the footwear, upholstery and leather goods industries. In this context, the project titled 'Environmentally-friendly oxazolidine-tanned leather' was launched, which is co-funded by the European Commission in the framework of the LIFE-Environment Programme. This project, which is coordinated b INESCOP, relied on the participation of an Italian company (CGS) and the Fundacion Communidad Valenciana - Region Europea (FCVRE). In addition, different tanneries and footwear and upholstery manufacturers participated in the project as end users of this technology by carrying out industrial-scale tests and producing different leather articles. En ligne : https://drive.google.com/file/d/1gKdYHNEMiWUnr8pYjiGFHNIbj984GD5I/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15708 [article]

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Using ashes from incineration of chromium sulphate tanned leather scrap. Part 2 : Tanning liquors, additives in footwear adhesives and fillers in mortars / M. J. Ferreira in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 85, N° 6 (11-12/2001)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 85, N° 6 (11-12/2001) . - p. 193-198 Titre : Using ashes from incineration of chromium sulphate tanned leather scrap. Part 2 : Tanning liquors, additives in footwear adhesives and fillers in mortars Type de document : texte imprimé Auteurs : M. J. Ferreira, Auteur ; E. Xara, Auteur ; M. F. Almeida, Auteur ; M. Barla, Auteur ; J. Ferrer, Auteur Année de publication : 2001 Article en page(s) : p. 193-198 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésifs -- Additifs Caractérisation Cendres Charges (matériaux) Chrome Cuirs et peaux -- Déchets -- Recyclage Mortier -- Additifs Récupération (Déchets, etc.) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Chromium is the basis of leather manufacture and its extractable reserves are limited in distribution. mainly in South Africa. Zimbabwe and ex-USSR countries. Almost 20% of the metal is used by the chemical industry where one third of it goes into leather production as chromium sulphate tanning agent. The European Union depends on chromium imports as for most other metals. After burning leather scrap tanned with chromium sulphate. the very rich chromium resulting ashes may contain chromium (VI) in such a concentration that it becomes a hazardous waste and needs careful handling. 23Thus. both economic and environmental reasons suggest the use of these ashes. This paper follows another 4in presenting some of the work carried out under CRAFT project BRST CT96-5085. where leather incineration ashes generated by two different pilot—combustion systems, respect ively a fixed grill incinerator (FGI) and a fluidized bed incinerator (FBI) were characterized and some alternatives for using those ashes were studied. In the previous paper two routes for recovering chromium from leather ashes were considered as well as the influence of some factors on their efficiency. Now, producing chromium sulphate tanning liquors with chromium leached from the ashes is considered, as well as some other alternatives of using those ashes, namely as additives in footwear adhesives and fillers in mortars. Note de contenu : - Characterization of ashes - Application of recovered chromium in the leather industry as tanning agent - Application of ashes in footwear adhesives - Application of ashes as a filler in mortars - Table 1 : Chemical characteristics of leathers tanned using a 50/50 mixture of commercial and FBI ash derived liquor - Table 2 : Physical characteristics of leathers tanned using a 50/50 mixture of commercial and FBI ash derived liquor - Table 3 : Characteristics of leathers tanned using a 50/50 mixture of commercial and FGl ash derived liquor - Table 4 : Characteristics of leathers tanned using a 75/75 mixture of commercial and FGI ash derived liquor - Table 5 : Type of failure of leather adhesive bonding - Table 6 : Heavy metals in the leachates from ashes and mortars DIN 38414-S-4 tests and Photobacterinin Phosphoreum toxicity En ligne : https://drive.google.com/file/d/1g9VcBCydqP4pVFRkAKVhOvYQeHtRAxJg/view?usp=drive [...] Format de la ressource électronique : pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40213 [article]

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