| Titre : |
Low monol polyether polyols offer new opportunities for sealant manufacturers |
| Type de document : |
texte imprimé |
| Auteurs : |
Curt Reichel, Auteur ; Thomas Fishback, Auteur |
| Année de publication : |
1997 |
| Article en page(s) : |
p. 30-32 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Joints d'étanchéité
Matières premières
Polyéthers
Polyols
Polypropylène glycol
Polyuréthanes
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
Polyurethane sealants are typically based on polypropylene glycol (PPG) polyols and are used in a variety of general purpose applications, such as joint fillers, construction sealants and caulks. They are characterized by their good adhesion to a variety of substrates and by their ability to accommodate stress through viscous flow. Thus, polyurethane sealants perform well in gap-filling situations that require up to 25% movement capability. The principle competition for polyurethanes is silicone, which provides an even greater movement capability due to a highly elastic response to stress. This difference in performance is reflected by a significant commercial cost differential.
Recently, BASF Corp. introduced several new low monol polyether polyols that may alter this balance. The new polyols feature levels of unsaturation significantly lower than conventional PPG polyols, giving them a higher functionality. Improved functionality increases performance through the attainment of higher molecular weights during polyurethane formation. These new materials may be used by the sealant industry to bridge the performance "gap" between polyurethane sealants and silicones at a cost commensurate with this performance. |
| En ligne : |
https://drive.google.com/file/d/1hm_t5epyhyDeAzuuUXVOt8xIbpzXIOln/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20374 |
in ADHESIVES AGE > Vol. 40, N° 1 (01/1997) . - p. 30-32
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Low monol polyether polyols offer new opportunities for sealant manufacturers in ADHESIVES AGE, Vol. 40, N° 1 (01/1997)
