| Titre : |
Basic titanum sulphate - A versatile tanning agent |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Bangaruswamy, Auteur ; M. P. Swamy, Auteur ; J. B. Rao, Auteur |
| Année de publication : |
1984 |
| Article en page(s) : |
p. 13-14 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Sulfate de titane
Tannage minéralTannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
In the leather industry, the dioxide of titanium finds extensive use as a whitening agent either alone or in the form of composites with barium sulphate and calcium sulphate. The thin film does not obscure or harshen the leather grain. Titanium dioxide is also used in combination with other materials for tinting leathers. As regards its inertness towards tanning materials in leathers, it does not suffer from darkening by ageing. Titanium has the best corrosion resistance as a result of its passivation (less than 0.007 mm/year) and hence it imparts better corrosion resistance than any other material usually employed in tanning systems. The white leather with anticorrosive properties produced by titanium tannage finds extensive utilisation in the production of protective gloves, clothing leathers and other outfits required to be used in corrosive atmospheres.
With regard to its function as a tannage agent, the studies carried out so far have been based on predominantly anionic titanium and the leathers obtained possessed lower hydrothermal stability, abrasive resistance and strength. In these studies, titanium exists as a double salt, viz. {(NH4)2SO4TiO(SO4)2x H201 and is in the anionic form.
This double salt, when used alone as well as in combination with certain organic and inorganic salts, is found to have filling and tanning effects in the production of leathers. A literature survey indicates that titanium forms very stable complexes in its quadrivalent state, the metal itself remaining cationic. Thus, it seems interesting to study the complexes of Ti(IV) with reference to pre-tanning, retanning and simultaneous tanning systems involving titanium, leading to fixation/ stripping of the components of the systems taken up for such tannages. |
| Note de contenu : |
- Application of titanium in general
- Applications of titanium in leather industry
- R&D work at CLRI
- Merits of basic titanium sulphate tannages |
| En ligne : |
https://drive.google.com/file/d/1hSm8qvJSuZJLp2zzWXAgNe7q_5AKFXrR/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34143 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 68 (Année 1984) . - p. 13-14
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