AUophane structural

Pilch-Pitera B. Polyurethane powder coatings crosshnked with aUophanate structures containing polyisocyanates. J Appl Polym Sci 2010 116(6) 3613-20. 

The concentrations of the aUophanate links vary with the time of cure [129]. Also, if the cross-linking reactions are conducted in inert nitrogen atmospheres, very little scission of cross-links takes place and a network structure forms during the cure. In open air, however, the scissions of cross-links are extensive [129] and the products have poorer physical properties. 

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