| Titre : |
Modified urea thickeners : now also for aqueous systems |
| Type de document : |
texte imprimé |
| Auteurs : |
Janos Hajas, Auteur ; Axel Woocker, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 151-158 |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Modified urea compounds can be used as very powerful liquid rheology additives in coatings. Their rheological impact in various coating systems is directly related to the specific chemical modifications that can be made to the polyurea molecule. Modifications evaluated were made using the end groups of varying polarities such as low polarity alkyl groups, medium polarity segments, or highly polar structures. These additives result in coatings with exceptional resistance to settling during storage, along with good sag resistance. The latest addition to the existing low and medium polarity modifications is a highly polar product, suitable for aqueous systems. Typical effects and properties of the new additive will be highlighted. The advantages for coating producers and users will be shown using several practical application examples compared with conventional rheological additives. |
| Note de contenu : |
- Modified urea rheology additives : chemistry and method of action
- Rheology effects as function of modification
- Characterization of modified ureas under various polarity conditions
- Low polarity urea thickener
- Medium polarity urea thickener
- Highly polar urea thickener
- Applications
- Low polarity modified urea
- Medium polarity modified urea
- Highly polar modified urea
- Advantages over conventional rheology additives
|
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12092 |
in PAINTINDIA > N° Annuel 2003 (2003) . - p. 151-158
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Modified urea thickeners : now also for aqueous systems in PAINTINDIA, N° Annuel 2003 (2003)
