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Reduction of emissions in finishing by appropriate preliminary work and selected products / H. Will in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXII (Année 1987)
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Titre : Reduction of emissions in finishing by appropriate preliminary work and selected products Type de document : texte imprimé Auteurs : H. Will, Auteur Année de publication : 1987 Article en page(s) : p. 311-322 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : By far the largest propositiob of organic solvents in leather finishing is used for top coating, particularly in applying solvent-based lacquers. Emission can be reduced by using lacquer systems based on acqueous emulsions or optimally by solvent-free finishing. Modifications of this kind in top coating generally reduce the fastness and the quality of the leather.
It is possible to improve the fastness properties obtained with the finishing systems by increasing the water-repellency of the leather in retannage and fatliquoring. Results to the same effect are obtained with binders that possess good resistance to water and give satisfactory flexibility and softness. On leather prepared in this way, a fastness level such as that obtainable with solvent-based lacquer top coats can be achieved with lacquers based on aqueous emulsions. Even roll coats can be achieved with lacquers based on aqueous emulsions will often suffice to achieve good fastness properties on leathers that have been rendered water-repellent. The finishing of leather without organic solvents, i.e. without top lacquer, caused a more or less strong change of the leather handle. Solvent-free finishing systems of this kind are available with or without croos-linking agents, and applied in sufficiently thick coats, they give good fastness properties.En ligne : https://drive.google.com/file/d/17aY-FQ2_NIUO1OmT0ODZI1M9wFUn45UL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9044
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