ROLE OF NUCLEOPHILICITY AND ACIDITY OF RE ACTANTS IN THE SOLID-PHASE REACTIONS OF POLYADDITION TO EPOXIDES

Solid-phase reactions of crystalline and amorphous diglycidyl ethers o f phenols with crystalline polyfunctional nucleophilic compounds (alip hatic or aromatic diamines and aliphatic polyols), crystalline and amo rphous mono- and diacids, and hydroquinone were studied. The rate of c onversion of epoxy groups and formation of cross-linked polymers corre lates with the basicity of reactants. The reaction is catalyzed by aci ds, because the rate of polymerization under the action of acids and p henols is proportional to the values of pK(alpha) of acids. The reacti ons with acids and phenols are compared with the liquid-phase reaction s of the model glycidyl ether with monoacid and phenol in the bulk at 180 degrees C.