| Titre : |
Water dispersible blocked polyisocyanate for coating applications |
| Type de document : |
texte imprimé |
| Auteurs : |
Ian Rimmer, Auteur ; Keith Pennington, Auteur ; Richard Jones, Auteur |
| Année de publication : |
1998 |
| Article en page(s) : |
p. 722-727 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
This paper describes the use of novel water-dispersible blocked polyisocyanate cross-linkers utilising 3,5-dimethylpyrazole (DMP) as the blocking agent. When formulated with acrylic emulsions containing isocyanate reactive hydroxyl groups, these will produce one component, heat curable coatings with final properties comparable to solvent-based systems. The DMP blocked polyisocyanates will cure at temperatures as low as 120 to 130°C when stoved for 30 min using standard urethane catalysts or 10 min using a novel catalyst. Coatings formulated from these cross-linkers also show potential for OEM automotive clearcoats, general industrial metals and temperature sensitive substrates, such as plastics. |
| Note de contenu : |
- Blocked isocyanates
- Water-dispersible blocked isocyanates
- Hydroxy-functional acrylic copolymers
- Catalysis
- Experimental : Formulations for water based clearcoats (systems 1,2 and 3) - Formulations for solvent-based clearcoat (system 4) - Formulation for water based clearcoat on solvent-based undercoats (system 5) -
- Discussion : Adhesion - Pencil hardness - Acid etch - Gloss - Overbake - Gasoline resistance |
| En ligne : |
https://drive.google.com/file/d/18eugXaDWus_lQ6l2g-EzVOAO8q76dA6Q/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11142 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10/98 (10/1998) . - p. 722-727
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