Patent ID: 6974874
Filing Date: 2005-12-13
Classification: C08G

Abstract:
1. A process for reducing the monomeric aziridine content in a polyaziridine forming reaction mixture comprising adding to the polyaziridine forming reaction mixture an excess of a carbodiimide scavenger wherein the excess is based on the equivalent ratio of carbodiimide scavenger to monomeric aziridine; wherein the polyaziridine forming reaction mixture comprises monomeric aziridine, acrylates, and polyaziridines; and wherein the carbodiimide scavenger comprises symmetric and unsymmetric carbodiimides represented by the formula wherein R′ and R″ independently represent alkyl and cycloalkyl with up to about 20 carbon atoms, aryl, alkaryl, or aralkyl.