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|1. (WO2018102333) ISOCYANATE-BLOCKED AMIDINES AS LATENT POLYURETHANE CATALYSTS|
|Applicants:||DOW GLOBAL TECHNOLOGIES LLC
|Inventors:||DE VRIES, Timothy
JIALANELLA, Gary, L.
|Title:||ISOCYANATE-BLOCKED AMIDINES AS LATENT POLYURETHANE CATALYSTS|
Disclosed are compositions including an adduct that is an isocyanate-blocked amidine having a multi-cyclic structure having hydrocarbon based substituents. The composition is useful as a latent catalyst for a two-component polyurethane adhesive. Further disclosed are compositions useful as a two-component polyurethane adhesive, including a polyol component and an isocyanate component and one or more isocyanate-blocked amidines having multiple non-aromatic rings and having hydrocarbyl groups off the residue of the isocyanate nitrogen atoms contained in the cyclic ring that is formed. The one or more isocyanate-blocked amidines may be located in the polyol component or the isocyanate component. Further disclosed are methods of forming the adduct and methods of bonding structures together using the latent two-component polyurethane adhesives.