BASE MODIFIED CATALYSIS IN THE STYRENATION OF DIPHENYLAMINE

摘要

BASE MODIFIED CATALYSIS IN THE STYRENATION OF DIPHENYLAMINE Diphenylamine is reacted with styrene in the presence of a base modified acid clay catalyst to improve yields of the p-styrenated diphenylamine (DPA), particularly the distyrenated DPA. Fuller's Earth exemplifies the clay, while KOH exemplifies the base. The highly p-styrenated diphenylamine is an active antioxidant with low volatility.