Influence of selected process parameters on the reproducibility of aniline dyeings. II. The influences of retanning and dyeing processes of aniline dyeings / Rolf Streicher in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVII, N° 8 (08/1992)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVII, N° 8 (08/1992) . - p. 296-311 Titre : Influence of selected process parameters on the reproducibility of aniline dyeings. II. The influences of retanning and dyeing processes of aniline dyeings Type de document : texte imprimé Auteurs : Rolf Streicher, Auteur ; Dietrich Lach, Auteur ; B. Magerkurth, Auteur Année de publication : 1992 Article en page(s) : p. 296-311 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aniline Cuirs et peaux -- Teinture Retannage Wet-blue (tannage) Peau tannée au chrome (le chrome donne une couleur bleue) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In part I of this paper, the influence of wet blues on the reproducibility of aniline dyeings was discussed. The present paper shows the influence of the following parameters on the intensity and levelness of shades : - Floatlength during retannage - Temperature during retannage - Floatlength during dyeing - Temperature during dyeing - The physical form of the duestuff before addition - Running time during fixation with formic acid Every variation of one of the parameters above was studied using a retannage with a pronounced bleaching effect, a retannage with a low bleaching effect, and two dyestuffs with different build-up properties on retanned leathers. Results : Short floats and low temperatures in retanning result in dyeings of deeper shades. Variation of the same parameters in the dyeing process gave reversed results. The intensity of a shade is increased by the addition of the dyestuff in dissolved form or as a liquid dye. Variations in retanning and dyeing processes can be compensated better by using a less bleaching retannage and dyeing in steps with a dyestuff having good build-up properties. Note de contenu : - INFLUENCE OF RETANNING AND DYEING PROCESSES ON ANILINE : - Influence of the neutral salt content of the wetblues - Influence of float length in retannage - Influence of temperature during retannage - Influence of the float length in dyeing - Influence of temperature during dyeing - Influence of the physical form in which the dyestuff is added - Influence of the drumming time with formic acid for the fixation of dyestuffs - Fig. 1 : Influence of retanning and dyeing processes on aniline dyeings - Fig. 2 : Retanning methods applied - Fig. 3 : Method for the assessment of dyeings - Fig. 4 : Influence of neutral salt content on aniline dyeings - Fig. 5 : Influence of float length during retanning on aniline dyeings - Fig. 6 : Influence of temperature during retanning on aniline dyeings - Fig. 7 : Absorption of white tanning agent in relation to temperature - Fig. 8 : Influence of float length during dyeing process on aniline dyeings - Fig. 9 : Influence of temperature during dyeing process on aniline dyeings - Fig. 10 : Absorption of acid brown 161 in relation to temperature - Fig. 11 : Influence of form in which the dye is added on aniline dyeings - Fig. 12 : Influence of drumming time with formic acid on aniline dyeings En ligne : https://drive.google.com/file/d/1lsyEGrRJuqLcCwMqUih_Bxavio3ShAUw/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39842 [article]

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