[article]
| Titre : |
A safer alternative takes the pressure out of formulating pressure-sensitive adhesives : A new, tetrafunctional epoxy reactive modifier is increasingly being used as non-mutagenic, drop-in formulation replacement for polyfunctional aziridine |
| Type de document : |
texte imprimé |
| Auteurs : |
Hitesh Soni, Auteur |
| Année de publication : |
2016 |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésifs en phase aqueuse
Adhésifs sensibles à la pression
Epoxydes
Formulation (Génie chimique)
Méta-xylènediamine
Polyacryliques
Réticulants -- Produits de remplacement
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
Testing for key performance properties for PSAs illustrate that the new epoxy reactive modifier, a tetrafunctional glycidyl diamine, is a highly effective and efficient crosslinker in waterborne, acrylic formulations to decrease peel adhesion, increase shear strength and eliminate any problems with adhesive transfer to substrates by increasing the cohesive strength of the treated adhesives. The epoxy reactive modifier demonstrates equivalent performance to the polyfunctional aziridine crosslinker tested in terms of shear adhesion and increased cohesive strength. While the decrease in peel adhesion with the epoxy reactive modifier is not as extensive as with the aziridine crosslinker tested, the epoxy reactive modifier exhibits a good balance of performance properties and does create substantial and entirely acceptable reductions in peel adhesion in PSAs.
In addition to enhancing performance of PSAs, the epoxy reactive modifier also offers benefits that the polyfunctional aziridine crosslinker does not, such as manufacturing efficiency and a safer HS&E profile, making it an attractive alternative. For example, while the tetrafunctional glycidyl diamine will remain active in formulated adhesives for several days, systems treated with other crosslinkers have a short pot life and will require re-inoculation of the adhesive due to decomposition of the aziridine due to hydrolysis. In addition, the tetrafunctional glycidyl diamine does not carry with it the types of safety and health concerns that are inherent in the aziridine systems. As a result, it is a safer, more efficient choice for adhesives formulators looking to replace potentially mutagenic polyfunctional aziridine crosslinkers with an easy drop-in replacement. |
| En ligne : |
http://www.adhesivesmag.com/articles/94480-a-safer-alternative-takes-the-pressur [...] |
| Format de la ressource électronique : |
Web |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26020 |
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 23, N° 3 (03/2016)
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Ajouter le résultat dans votre panierA safer alternative takes the pressure out of formulating pressure-sensitive adhesives / Hitesh Soni in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 23, N° 3 (03/2016)
