A novel class of non-VOC adhesives has been developed with plant-derived biopolymers that have the unusual ability to disperse reactive polymeric isocyanate (PMDI) �oils� in water while simultaneously protecting the reactive isocyanate groups from undergoing premature condensation reactions.  The discovery of these unusual attributes has resulted in the creation of a new class of heat-activated two-component adhesives, where the pot-life is sufficient to accommodate multiple industrial processes, and where the resulting physical performance characteristics either meet or exceed end-use requirements for a number of applications (e.g., wood composites).  The proteins that exhibit these unusual characteristics have been observed to possess unique structural attributes as identified by FTIR and NMR techniques.  These findings will be discussed together with studies pertaining to the unusual isocyanate-protective function that is afforded when PMDI is dispersed in water.

Reactive 2-part water-based dispersions made with PMDI and canola meal

244th National Meeting (2012)

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