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Silicone dioxyde : environmentally friendly alternative for wet white manufacture / Karlheinz Fuchs in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXX, N° 6 (06/1995)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXX, N° 6 (06/1995) . - p. 164-176 Titre : Silicone dioxyde : environmentally friendly alternative for wet white manufacture Type de document : texte imprimé Auteurs : Karlheinz Fuchs, Auteur ; Rainer Kupfer, Auteur ; John W. Mitchell, Auteur Année de publication : 1995 Article en page(s) : p. 164-176 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Silicon and oxygen are the most abundant elements on earth. When chemically combined they form naturally occuring silicon dioxyde and silicates with widely differing structures. Minerals found in nature and based on these elements are numerous. Silicates have been widely used in technical applications for a long time. Pure silicon as a material for electronic components laid the foundations of the computer age has had a crucial influence on our era. In leather manufacture, by contrast, the silicon compounds have so far been of only minor importance. With the development of a specific colloidal aqueous suspension of silicon dioxyde gel, a major step has been taken toward making this class of substances accessible to and usable in leather manufacture. This compound enables pelts to be processed into wet white, a stabilized hide material that can be subjected to mechanical operations and then can be subjected to mechanical operations and then to any kind of tanning. the hide waste producted in splitting, shaving, and trimming is free from environmentally polluting chemicals and presents no problems in disposal or recycling. Since the collagen is hardly altered by silica (unlike wet white processed with tanning agents that affect the collage fibre structure), subsequently tanned hides retain their charactéristic properties and undergo no adverse changes. This also means no restrictions need be placed on the collagen offal of trimming and shaving, which expands the array of their possible uses and value in the market. Note de contenu : - INTRODUCTION : In the beginning ... the claims - Environmental audit - Wet white economics - EXPERIMENTAL : Silicon dioxide wet white system - Health and toxicity - Stability of the dispersion - RESULTS AND DISCUSSION : Influence of pH - Interaction of feliderm W with collagen - Does it tan ? - Further work - How to tan the ECO leather En ligne : https://drive.google.com/file/d/18sl4hEUCFj5nc-4xIxu6o9xqmmZr-wyd/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7941 [article]

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An alternative approach to traditional chrome tanning / Rudolf Zauns in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXX, N° 6 (06/1995)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXX, N° 6 (06/1995) . - p. 177-200 Titre : An alternative approach to traditional chrome tanning Type de document : texte imprimé Auteurs : Rudolf Zauns, Auteur ; Peter Kuhm, Auteur Année de publication : 1995 Article en page(s) : p. 177-200 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Finally it can be said that the claim that sodium aluminium silicate tanning represents a new, innovative and proven tanning system is fully justified, as was shown by the tests. On the other hand it is clear that much work will have to be carried out on this system before it is fully mature. At the current state of its development it is not yet capable of replacing chrome tanning in all areas of leather production. However, it is our opinion that tanning with sodium aluminium silicate - Coratyl G - offers sufficient variation options and ecological benefits to enable it to be developed into an interesting and economic tanning system. Note de contenu : - Mineralogy and crystallography - Theory of sodium aluminum silicate tanning - Rule of thumb - Application-related tests and physical tests - Tanning agent distribution in leather tanned with sodium aluminum silicate (NAS) - Ecological considerations and advantages of the tanning process with sodium aluminum silicate En ligne : https://drive.google.com/file/d/1zxgZyY9lqRz2YZOoPRldINP9Ls6dHucf/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7942 [article]

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