Synthesis and characterization of new organosoluble poly(ether imide)s derived from various novel bis(ether anhydride)s - Polyimides and Other High Temperature Polymers - page 52

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Scheme IV. Synthesis of 1,4-bis(4-aminophenoxy) 2- tert -butylbenzene (BATB) and 2,2'-dimethyl-
4,4'-bis(4-aminophenoxy)biphenyl (DBAPB).