Uncrosslinked epoxide-amine addition polymers .44. Linear arylamine/2,2-bis[4-(2,3-epoxypropoxy)phenyl] propane addition polymers - Synthesis and properties

The addition polymerization of aromatic disecondary diamines and 2,2-bis[4-(2,3-epoxypropoxy)phenyl] propane (DGEBA) leads to linear high molecular weight epoxide-amine addition polymers with number-average molecular weights ranging from 10000 to 20000 g/mol. Depending on the amine structure, their glass transition temperatures were estimated between 80 and 140 degrees C. The fractionation of the high molecular weight addition polymers allows the separation of cyclic oligomers and the separation of polymers with narrow molecular weight distribution (<(M)over bar (W)>/<(M)over bar (n)> = 2.4-2.8). In dilute solution, predominantly cyclic oligomers were formed. Hence, they were prepared in such solutions and isolated by means of column chromatography. Their cyclic structure is proved by combination of (M) over bar values and C-13 NMR spectra.