Bernard, Rothwell & Brown
Process for the production of a random copolymer containing repeating polyimide units and repeating polyetherimide units
 The present invention provides a process for the production of random copolymers containing repeating polyimide units and repeating polyetherimide units. The process is a reverse addition process and utilizes at least two dianhydrides of varying reactivity. 
General Electric Company
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Ronald A. Patrick E.
Greenberg Gallagher