| Titre : |
Oxidovanadium(V) dithiocarbamates as driers for alkyd binders |
| Type de document : |
texte imprimé |
| Auteurs : |
Iva Charamzová, Auteur ; Jaromir Vinklà rek, Auteur ; Petr Kalenda, Auteur ; Ivana CÃsarová, Auteur ; Jan HonzÃcek, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 1113–1122 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Analyse spectrale
Auto-oxydation
Caractérisation
Catalyse
Cinétique chimique
Composés organiques -- Synthèse
Dithiocarbamates d'oxydovanadium
Liants
Mesure
Réticulants
Revêtement -- Séchage:Peinture -- Séchage
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A series of oxidovanadium(V) dithiocarbamates were synthesized by the conventional synthetic procedure and characterized by analytical methods. Structures of two representatives were determined by X-ray diffraction analysis on single crystals. The initial screening of catalytic alkyd drying, performed on a commercial solventborne alkyd resin of medium oil length, revealed a promising activity of oxidovanadium(V) dithiocarbamates, which was further proved on several alkyd formulations including slow-drying high-solid binders. Kinetic behavior of the catalyzed autoxidation process, investigated by time-resolved infrared spectroscopy on a thin alkyd film, was found to be very different from commercial cobalt carboxylates. Appearance of oxidovanadium(IV) species upon the curing process was evidenced by EPR spectroscopy. |
| Note de contenu : |
- EXPERIMENTAL SECTION : Materials and chemicals - Synthesis of [VO(S2CNEt2)3] (VO-dtc-1) - Synthesis of [VO(S2CNBu2)3] (VO-dtc-2 - Synthesis of [VO(S2CNHex2)3] (VO-dtc-3) - Synthesis of [VO{S2CN(CH2CH2)2O}3] (VO-dtc-4) - Preparation of test coatings - Drying time measurements - Relative hardness measurements - Infrared spectroscopy - EPR spectroscopy - X-ray crystallography
- RESULTS AND DISCUSSION : Synthesis and characterization - Drying performance - Kinetics of the autoxidation - Mechanism of the catalytic action |
| DOI : |
https://doi.org/10.1007/s11998-020-00326-3 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-020-00326-3.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34554 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 5 (09/2020) . - p. 1113–1122
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