| Titre : |
Polyester polyols for water resistant polyurethane coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Erwin Honcoop, Auteur ; Eric Appelman, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 35-43 |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Polyurethanes provide an obvious way to very high performing coatings for many uses, and have found a long use in solvent borne systems. Polyurethanes can be readily made water borne and have been used successfully as such or in acrylic-urethane hybrids. However, bringing them into water has taken the shine of polyurethanes to quite an extend, because of the hydrolytic sensitivity of the commonly used adipate polyester backbones. This results in poor storage stability, and film durability. This problem can be countered through a range of hydrolytically stable polyester polyols based on dimerized fatty acids. |
| Note de contenu : |
- Dimerized fatty acids
- Dimer technology gives polyurethanes more resistance
- Preparation of PU elastomers
- Water uptake and hydrolysis
- Mechanical properties : dimerbased PU behaves like a rubber
- Adhesion of dimer-based PU is improved on polar and nonpolar substrates
- PU dispersion
- Preparation of PU dispersions
- Mechanical properties : elongation
- Coating hardness of the polyurethane dispersions are comparable
- Adhesion to various substrates
- Chemical resistance and water uptake of dimer fatty acid based PU dispersions.
- PU based on dimer fatty acid resists heat, oxygen and ultraviolet radiation attack. |
| En ligne : |
https://drive.google.com/file/d/1Mjd_Ywds4Hd9WZWc9HitT1sblfW-5tm5/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10715 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 9/02 (09/2002) . - p. 35-43
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Polyester polyols for water resistant polyurethane coatings in EUROPEAN COATINGS JOURNAL (ECJ), N° 9/02 (09/2002)
