[article]
| Titre : |
Tert-butyl acetate : non-HAP solvent for high-solids epoxy formulations |
| Type de document : |
texte imprimé |
| Auteurs : |
Charles Cooper, Auteur ; Paul Galick, Auteur ; Stephen Harris, Auteur ; Daniel Pourreau, Auteur ; Carmen Rodriguez, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 19-24 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Tags : |
Acétique acide ester t-butyle Prévention pollution Solvant organique Epoxyde résine Formulation Peinture haute teneur solide Matériau revêtement |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Xylene is the traditional diluent solvent for formulating epoxy/amine paints used in protective coatings and linings. Currently, it is under regulatory pressure because it is on the hazardous air pollutant (HAP) list and it is also a volatile organic compound (VOC). Ketones and acetate esters are powerful solvents, but their use is limited by their reaction with the amine curatives before paint application. Tert-butyl acetate (t-BAc) proposed as a VOC-exempt solvent, is a nonreactive, non-HAP solvent suitable for both the epoxy resin and amine curative sides of a two-component epoxy system. Molecular modeling predicts very low reactivity of the t-BAc ester functionality with amine nucleophiles as a result of steric hindrance. Long-term aging studies with amine curatives in t-BAc solutions confirm these theoretical results. Kinetics of the reaction of amines with t-BAc and its n-butyl acetate isomer support the view that steric hindrance plays a major role in amine solution stability. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5769 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 922 (11/2001) . - p. 19-24
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Tert-butyl acetate in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 922 (11/2001)
