Process for making polyetherimides

Details Process for making polyetherimides Process for making polyetherimides

C - Chemistry, Metallurgy

08

G

402/221, 402/33,

C08G 73/10 (2006.01)

Patent

CA 1197345

PROCESS FOR MAKING POLYETHERIMIDES ABSTRACT OF THE DISCLOSURE A process for making polyetherimides involving reacting an aromatic bis (ether anhydride) with an organic diamine in an inert solvent to form a prepolymer solvent mixture, effecting solvent removal by thin-film evaporation, and heating the resulting prepolymer to a temperature above the glass transition temperature of the final polyetherimide product and less than 450°C to form the polyetherimide.

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