Plasticiser developments for latex adhesives / William D. Arendt in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4600 (09/2014)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 204, N° 4600 (09/2014) . - p. 36-37 Titre : Plasticiser developments for latex adhesives Type de document : texte imprimé Auteurs : William D. Arendt, Auteur ; Emily McBride, Auteur ; Marianne Conner, Auteur Année de publication : 2014 Article en page(s) : p. 36-37 Langues : Anglais (eng) Catégories : Adhésion Colles:Adhésifs Dibenzoate Essais de pelage humide Plastifiants Tack Viscosité Index. décimale : 667.9 Revêtements et enduits Résumé : Dibenzoates are low VOC/non-SVHC plasticisers that exhibit excellent performance overall in adhesive applications. While the use of cheaper plasticiser alternates may be viable for some applications to reduce the cost of the overall formulation, careful evaluation of physical properties must be conducted in order to determine whether the loss in performance is acceptable. Even a 30% addition of triacetin to a dibenzoate blend can cause a noticeable drop in performance for both homopolymer and copolymer systems. Additionally, the use of TMPDDIB is not advised for homopolymer systems due to its poor compatibility and resulting poor performance. Triacetin and TMPDDIB also demonstrate high volatility, which may become a problem as regulatory bodies take more interest in the VOCs of formulations and articles. The judicial application of these alternates in blends with dibenzoates is key in formulating a low cost adhesive with acceptable performance. Note de contenu : - Volatility of neat plasticizers - Viscosities - Wet tack - Open time - Specific adhesion - Water resistance in peel En ligne : https://drive.google.com/file/d/1174F2zrYXYtJLe61dbx90UcSd6xkqY95/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22204 [article]

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Polyisocyanate crosslinkers for aqueous polyurethane dispersions / Jeffrey F. Dormish in ADHESIVES AGE, Vol. 39, N° 2 (02/1996)  

[article]  inADHESIVES AGE > Vol. 39, N° 2 (02/1996) . - p. 16-21 Titre : Polyisocyanate crosslinkers for aqueous polyurethane dispersions Type de document : texte imprimé Auteurs : Jeffrey F. Dormish, Auteur Année de publication : 1996 Article en page(s) : p. 16-21 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs en phase aqueuse Essais de pelage humide Polyisocyanates Polyuréthanes Réticulation (polymérisation) Index. décimale : 668.3 Adhésifs et produits semblables Résumé : In this article we have shown that the new polyisocyanates effectively crosslink polyurethane dispersions as demonstrated by improvements in softening point and wet peel strength. Improvements have also been presenting in the performance of selected non-polyurethane dispersions when reacted with these polyisocyanates. The performance advantages of the new crosslinkers, Desmodur XO-671 and Desmodur XO-672, can be summarized as follows. Performance characteristics of Desmodur XO-671 are - improved dispersibility relative to the standard crosslinkers; - requires minimal/no agitation after initial mixing; - non-discoloring aliphatic polyisocyanate; and - long pot life of aliphatic systems. Performance characteristics of Desmodur XO-672 are - readily dispersible compared to competitve aromatic polyisocyanate; - useful pot life (softening point test); and - highest softening points with the dispersions tested. These polyisocyanate crosslinkers are two additional products for the adhesive compounder to crosslink aqueous dispersions. Note de contenu : - CROSSLINKING OF POLYURETHANE DISPERSIONS : Practical aspects - Theoretical basis for improved properties - EXPERIMENTAL : Dispersibility test - Softening point on convas - Peel strength after water immersions - Peel strength on PVC - Particle size of crosslinkers - RESULTS AND DISCUSSION : Ease of dispersibility - Crosslinking effectiveness : heat resistance improvement - Crosslinking effectiveness : water resistance improvement - Crosslinker effect on peel strengh - working life of crosslinkers En ligne : https://drive.google.com/file/d/1xeTKI-X3xhg0pqdx8gGVobGjHIBBNaSe/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20484 [article]

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