Alpha-methylene glutaric anhydride prepn - in high yield, from alpha-meth-ylene glutaric acid and acetic anhydride at room temp

摘要

Alpha-Methylene glutaric anhydride (I) is prepd. by reacting alpha-methylene glutaric acid (II) with acetic anhydride at 50 degrees C. A 60-70%, yield (calcd. on (II)), can be obtd. Polymers of (I) and (II) and not formed. (I) is suitable as comonomer with acrylonitrile, giving easily dyed copolymers.