More security in leather dyeing by observing build-up power an affinity numbers / L. Rooryck in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61, N° 4 (07-08/1977)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 61, N° 4 (07-08/1977) . - p. 85-87 Titre : More security in leather dyeing by observing build-up power an affinity numbers Type de document : texte imprimé Auteurs : L. Rooryck, Auteur Année de publication : 1977 Article en page(s) : p. 85-87 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants Cuirs et peaux -- Teinture Essais (technologie) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In most works, selection of dyes for the dyeing of leather is based on long years of practical experience. Yet accelerating changes in fashion which involve changes in processing methods, particularly regarding retanning, fatliquoring, etc., as well as changes in countries of origin of skins, result in a change of behaviour of these leathers during dyeing. Frequently operational considerations prevent changes in substrate and in method of dyeing. Dyeing results can, however, be substantially improved by an optimum dye selection in accordance with recently established criteria. The dyeing behaviour of any dye on leather is influenced by many factors. In is difficult to create conditions that are exactly reproducible. Under the name of "Dermagen testing method" a process has been developed which is characterised by the mass-dyeing of a leather pulp made of shavings of a standard-tanned leather.i Depending on the standard depth2 figures are established for build-up power, the saturation limit as well as the affinity of a dye. On the basis of the numbers of affinity and the build-up power dues can be won about the behaviour of dye or combinations of dyes on leathers of varying pretreatment. Thus the selection of dyes on the basis of their dyeing behaviour is greatly simplified. Note de contenu : The dermagen testing method - Principle of the dermagen testing method - exampe of pure-chrome leather pulp (high-affinity) - Example of a low-affinity mass - Standard depths - Examples - Build-up power and saturation limit - Assessment of build-up power and saturation limit of leather dyes - Significance of build-up of power and saturation limit - Behaviour concerning affinity - Assessment of the affinity numbers of leather dyes - Test procedure - Examples - Significance of affinity numbers En ligne : https://drive.google.com/file/d/1f8-X88YphMzCG9vXV19zlEV5Pf64spfh/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34120 [article]

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More security in leather dyeing by observing build-up power and affinity numbers / L. Rooryck in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61 et 62 (Années 1977 et 1978)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 61 et 62 (Années 1977 et 1978) . - p. 85-87 Titre : More security in leather dyeing by observing build-up power and affinity numbers Type de document : texte imprimé Auteurs : L. Rooryck, Auteur Année de publication : 1978 Article en page(s) : p. 85-87 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants Cuirs et peaux -- Teinture Essais (technologie) Evaluation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In most works, selection of dyes for the dyeing of leather is based on long years of practical experience. Yet accelerating changes in fashion which involve changes in processing methods, particularly regarding retanning, fatliquoring, etc., as well as changes in countries of origin of skins, result in a change of behaviour of these leathers during dyeing. Frequently operational considerations prevent changes in substrate and in method of dyeing. Dyeing results can, however, be substantially improved by an optimum dye selection in accordance with recently established criteria. The dyeing behaviour of any dye on leather is influenced by many factors. In is difficult to create conditions that are exactly reproducible. Under the name of "Dermagen testing method" a process has been developed which is characterised by the mass-dyeing of a leather pulp made of shavings of a standard-tanned leather. Depending on the standard depth figures are established for build-up power, the saturation limit as well as the affinity of a dye. On the basis of the numbers of affinity and the build-up power dues can be won about the behaviour of dye or combinations of dyes on leathers of varying pretreatment. Thus the selection of dyes on the basis of their dyeing behaviour is greatly simplified. Note de contenu : - The dermagen testing method - Principle of the dermagen testing method - Example of a pure-chrome leather pulp (high-affinity) - Example of a low-affinity mass - Standard depths - Examples - Build-up power and saturation limit - Assessment of build-up power and saturation limit of leather dyes - Significance of build-up of power and saturation limit - Behaviour concerning affinity - Assessment of the affinity numbers of leather dyes - Test procedure - Examples - Significance of affinity numbers En ligne : https://drive.google.com/file/d/1f8-X88YphMzCG9vXV19zlEV5Pf64spfh/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35214 [article]

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