Patent ID: 8530375
Filing Date: 2013-09-10
Classification: B01J,Y02C

Abstract:
1. A sorbent for acid anhydrides comprising: a) a support substrate selected from the group consisting of polyethers, polystyrenes, siloxanes, polyacrylates, and combinations thereof; b) a tertiary amine selected from the consisting of 1,8 Diazabicyclo-[5.4.0]-undec-7-ene (DBU); 1,3,4,6,7,8-Hexahydro-2H-pyrimido[1,2,-a]pyrimidine (TBD), and N-(2-Hydroxyethyl)piperazine immobilized within the pores of the substrate; and c) wherein a 1:1 molar ratio of said acid anhydrides to the tertiary amine defines the maximum sorbent loading capacity.