| Titre : |
Structural and performance attributes of the new orange and yellow tin pigments |
| Type de document : |
texte imprimé |
| Auteurs : |
Simon K. Boocock, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 34-37 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Niobium Le niobium est un élément chimique, de symbole Nb et de numéro atomique 41.
Le niobium est un métal brillant gris, ductile qui prend une couleur bleutée lorsqu'il est exposé à l'air à température ambiante pendant une longue période. Les propriétés chimiques du niobium sont presque identiques à celles du tantale. Le métal commence à s'oxyder à l'air au-dessus d'une température de 200 °C. Le minerai pyrochlore (Ca,Na)Nb2O6(OH,F) fournit la majeure partie du niobium produit.
Nitrure de titane
Pigments métalliques
Zinc
|
| Index. décimale : |
667.2 Colorants et pigments |
| Résumé : |
Significant developments in high chroma pigments and provides some understanding of the mechanism of colouration within these new classes of pigment.
Within the past decade significant developments in high-chroma orange and yellow pigments, based on solid-state tin chemistry, were introduced to the peint and plastic marketplaces : These are a zinc stannous titanate often referred to as Rutile Tin Zinc (variously typified as Pigment Yellovv 216, or as Pigment Orange 82) and Pigment Yellow 227, a zinc sulphide doped stannous niobium pyrochlore.
All three of these pigment chemistries use divalent tin, Sn(II), as the primary chromophore. Beyond that similarity there are key differences in allowed composition. The rutile tin zinc (RTZ) pigments have two general compositions. There is only one composition commercialised for niobium tin pyrochlore yellow.
There are now seven orange or orange-hued tin pigments available to the marketplace, of which our company makes two. Given the larger number of RTZ (or related) pigment offerings I'd like to begin by discussing how they might differ from one another, chemically, in ternis of properties and in terms of their structure. |
| Note de contenu : |
- Rutile Tin zinc and related pigments - elementary considerations
- Rutile Tin zinc and related compositions - structural phase date
- Structure of the niobium Tin pyrochlore - Py 227 pigment
- Applications of NTP yellow and RTZ oranges
- Thermal stability of Tin (II) containing pigments |
| En ligne : |
https://drive.google.com/file/d/1INM0NDtH2S2KL1PW0evwp03hIL2Qo1uL/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24928 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 205, N° 4614 (11/2015) . - p. 34-37
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