| 摘要 |
PCT No. PCT/EP88/01019 Sec. 371 Date Jun. 12, 1990 Sec. 102(e) Date Jun. 12, 1990 PCT Filed Nov. 10, 1988 PCT Pub. No. WO89/04336 PCT Pub. Date May 18, 1989.Soluble and/or fusible polyimides or polyamidoimides of the general formula I <IMAGE> I in which R denotes a divalent radical of the formula II <IMAGE> II Ar denotes trivalent or tetravalent aromatic radicals or mixtures thereof, X denotes the amide radical, if Ar is trivalent, and if Ar is tetravalent denotes the imide radical and R1 denotes divalent aromatic radicals, and a process for their preparation.
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