POLYCARBAMATES, PROCESS FOR PREPARING POLYCARBAMATES, AND PROCESS FOR PREPARING POLYISOCYANATES

摘要

Polycarbamates of a polyisocyanate and secondary alcohols are disclosed. These carbamates are characterized in being readily pyrolyzed to form the corresponding polyisocyanate and alcohol with low formation of tars and other by-products. Thus, these polycarbamates can be pyrolyzed under relatively mild conditions, and in the absence of solvent and catalyst.