METHODS AND SYSTEMS FOR THE SELECTIVE FORMATION OF THIOURETHANE BONDS AND COMPOUNDS FORMED THEREFROM

摘要

The present techniques relate to thiourethane compositions formed by reacting a reactive composition containing active molecules having an average of at least one thiol group per active molecule and an average of at least one hydroxyl group per active molecule with a monomer composition containing monomer molecules having an average of at least two isocyanate groups per monomer molecule. The reactions are performed in the presence of an amine catalyst, which may preferentially react thiol groups over hydroxyl groups, thus forming a thiourethane composition having, on average, more hydroxyl groups than thiol groups and more thiourethane groups than urethane groups, on a normalized basis.