| Titre : |
Waterborne 2K acrylic polyurethanes : novel low -NCO/-OH systems |
| Type de document : |
texte imprimé |
| Auteurs : |
Chase J. Boudreaux, Auteur ; Amir Niroomand, Auteur ; Thierry Jeannette, Auteur |
| Année de publication : |
1999 |
| Article en page(s) : |
p. 30-35 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Two-component waterborne polyurethane systems have been an active area of research and business development in recent years. Most of these waterborne systems require relatively high isocyanate indexing over hydroxyl content in order to compensate for the inevitable competing reaction with water. We develop combinations of novel acrylic polyol dispersions and a novel water dispersible polyisocyanate that produce useful coatings at -NCO/ -OH indexing of less than 1.25. A discussion is included on how variations in components of the formulations influence pot life, application properties, tack-free and through-cure time film properties, and accelerated weathering data. |
| Note de contenu : |
- Advantages of waterborne systems
- But there are shortcomings
- New effecive coatings with improved properties at -NCO/-OH rations less than 1.25
- Conditions
- Coating formulations
- Measurements and testing
- Effects of tin catalyst on film properties
- Increased levels of catalyst decreased tack free and through cure times
- Effects of -NCO/-OH ratio on film properties |
| En ligne : |
https://drive.google.com/file/d/1VAMdIo-EpCkcFcKDA6QhD0pefvgP9kTj/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11194 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6/99 (06/1999) . - p. 30-35
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