Aromatic bis(etherimide)s and method for making aromatic...

Details Aromatic bis(etherimide)s and method for making aromatic... Aromatic bis(etherimide)s and method for making aromatic...

C - Chemistry, Metallurgy

07

C

260/306.1, 260/5

C07C 51/00 (2006.01) C07D 209/48 (2006.01) C07D 307/89 (2006.01)

Patent

CA 1043795

Abstract of the Disclosure Aromatic bis(ether anhydride)s can be made by a nitro displacement of an N-substituted nitrophthalimide with ? alkali diphenoxide to produce an intermediate aro- matic bis(etherphthalimide). Hydrolysis of the aromatic bis(etherphthalimide) to the corresponding tetra-acid salt followed by acidification and dehydration, results in the production of the aromatic bis(ether anhydride). These anhydrides can be used as intermediates for making poly- imides. The intermediate aromatic bis(etherphthalimide) can be employed as a plasticizer in polyimide resins.

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