| Titre : |
Pilot production of chrome-tanned leather without formation of hexavalent chromium by treatment with a combination of inhibitors |
| Type de document : |
texte imprimé |
| Auteurs : |
Koki Ogata, Auteur ; Toshinori Inatsugi, Auteur ; Shunji Hattori, Auteur ; Yoshiko Kagawa, Auteur ; Keiji Yoshimura, Auteur ; Koji Takahashi, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 1-5 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Chrome hexavalent
Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés physiques
Cuirs et peaux de bovins
Inhibiteurs (chimie)
Solidité de la couleur
Statistique
Tannage au chrome
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
A combination of inhibitors, namely a mixture of 1.0mmol of 3(2)-t-butyl-4-hydroxyanisole, 0.01 mmol of ascorbic acid, and 0.001 mmol of collagen peptide exhibiting complete inhibition of C6-+ formation on a laboratory-scale, was applied to produce chrome-tanned upper leather without formation of Cr6+ in the actual manufacturing line of a tanner. In this study, the following two methods were used for application of the combined inhibitor ; spraying with the combined inhibitor solution before finishing, using twice the volume of the dry leather weight after fat-liquoring ; and coating with base-coat containing the combined inhibitor before top coating in the finishing process, using twice the volume of the dry leather weight. Each inhibitor-treated leather contained chemical components similar to those of typical leather produced without the combined inhibitor, and exhibited perfect inhibition of Cr6+ formation, even if heat-aged. ln addition, the physical strength of the inhibitor-treated leathers was higher than that of leather produced usually without inhibitor. In particular, the surface strength (bail burst) of the treated leathers was twice that of the untreated leather. These results indicate that this combination of inhibitors could be effectively applied to industrially produce Cr-tanned leather not only without C6+ formation but also with an improved physical strength. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Production of chrome-tanned upper leather - Combined inhibitor treatment - Extraction of Cr from leather sample - Analytical methods - Statistical analysis
- RESULTS AND DISCUSSION : Features of bovine chrome-tanned upper leather - Complete inhibition of Cr6+ formation - Improved physical and mechanical properties - Colour fastness to rubbing |
| En ligne : |
https://drive.google.com/file/d/12F4qSyp3VzmNQjTbdpNz5u3SQ8S4B0Th/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31786 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 1 (01-02/2019) . - p. 1-5
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