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JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) . Vol. XCIII, N° 7Mention de date : 09/1998Paru le : 01/09/1998 |
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Ajouter le résultat dans votre panierOn the recovery of natural fat and non ionic surfactant from sheepskin degreasing / Agusti Marsal in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIII, N° 7 (09/1998)
[article]
Titre : On the recovery of natural fat and non ionic surfactant from sheepskin degreasing Type de document : texte imprimé Auteurs : Agusti Marsal, Auteur ; Albert M. Manich, Auteur ; M. de Castellar, Auteur ; Jaime Cot, Auteur Année de publication : 1998 Article en page(s) : p. 207-214 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Woolskins with high natural fat content are subjected to the degreasing process. When this is carried out with non ionic surfactant in aqueous medium, a highly polluting emulsion consisting of salt, water, natural fat and non ionic surfactant is obtained. In order to reduce the contamination load, and a sludge or "fat paste" made up of water, salt, natural fat and non ionic surfactant are obtained sparately. Given the constitution of this "fat paste", no use has been found up to now. The aim of this work is to separate the natural fat from the surfactant which are present in the "fat paste". A first extraction with n-Hexane:ethyl ether (40:10) of silicia impregnated with the "fat paste", allows the total recovery of skin natural fat which is slightly contaminated by a small amount of surfactant. A successive extraction of the silica with methanol allows the surfactant (nonylphenol with 8 M EtO) to be totally recovered. Note de contenu : - EXPERIMENTAL : Starting material - Spearation precedure - Regeneration of used silica gel - Analysis of the extracts
- RESULTS AND DISCUSSION : Determination of salt and water in the "fat paste" (optional) - "Fat paste"/silica gel ratio - Extraction of natural fat - Extraction of non ionic surfactant - Regeneration of used silica gel - Infrared spectrophotometryEn ligne : https://drive.google.com/file/d/1YwVK7QODIE84Ns8LmiHaDlBAxSTuXzNW/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4501
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Code-barres Cote Support Localisation Section Disponibilité 006967 - Périodique Bibliothèque principale Documentaires Disponible Some useful guidelines for the selection of dyes / Henri Gardere in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIII, N° 7 (09/1998)
[article]
Titre : Some useful guidelines for the selection of dyes Type de document : texte imprimé Auteurs : Henri Gardere, Auteur Année de publication : 1998 Article en page(s) : p. 215-218 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The selection of wet end dyestuffs affects the technical properties of dyed leather, the toxico-ecological features of the liquid effluents and possibly of the final leather, and the cost of manufacturing the leather and its commercial value.
Three recurring tanners' questions regarding the selection of dyes are addressed :
1. Can I replace a suitable dye by a Color Index equivalent ?
2. How can I be sure that my leathers or the goods made with them will not be prevented from entering Germany ?
3. How can I eliminate the contribution of dyes to the salts content in my post tanning effluents ?
Understanding what is meant by a leather dye is essential to answer these questions. It appears that not only is each dyestuff important, but so too is the manufacturer's commitment and capacity to adapt to industry variables and needs.Note de contenu : - What is a "leather dye" ?
- Color index
- Banned amines
- Liquid dyesEn ligne : https://drive.google.com/file/d/1f3A_rKm6aVk7muvP6zudQ3HthoQoAHnP/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4502
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Code-barres Cote Support Localisation Section Disponibilité 006967 - Périodique Bibliothèque principale Documentaires Disponible The state of trade - today and tomorrow / Charles Myers in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIII, N° 7 (09/1998)
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Titre : The state of trade - today and tomorrow Type de document : texte imprimé Auteurs : Charles Myers, Auteur Année de publication : 1998 Article en page(s) : p. 219-232 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure En ligne : https://drive.google.com/file/d/1Zs1o0jzINN_1BUEwGb_D9DrMGExS7St6/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4503
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Code-barres Cote Support Localisation Section Disponibilité 006967 - Périodique Bibliothèque principale Documentaires Disponible
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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006967 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |