Aromatische Polyketone wurden durch Fällungspolykondensation aus den Säurechloriden der Iso‐ und Terephthalsäure, des 3,3‐Bis(4′‐carboxy‐phenyl)phthalids, des Bis(4‐carboxy‐phenyl)ethers jeweils mit Diphenylether sowie direkt aus 4‐Phenoxybenzoylchlorid hergestellt. Der Einifluß von Katalysator, Lösungsmittel und Temperatur auf den Syntheseverlauf wurde untersucht und die Struktur der erhaltenen Polyketone aufgeklärt.

Studies were made on the synthesis of halide-substituted poly(phthalidylideneary1ene)s by Friedel-Crafts polycondensations of 3-aryl-3-chlorophthalides containing substituents in +position of the phthalide cycle. As follows from the C" NMR spectra, those monomers can afford polymers containing two types of isomeric units substituted in 4-or 7-position. The possible routes of formation of the isomeric units are analyzed and a scheme is suggested for the monomer rearrangement in the synthetic course. The polymers containing those two types of units were shown to be highly thermostable and to contain about 30% of a crystalline phase.

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The structure of poly(phthalidylidenearylene)s, synthesized by electrophilic substitution reactions, was studied using 'H and 13C NMR spectroscopy. Homopolycondensation of 3-aryl-3chlorophthalides 1 ad in nitrobenzene leads to para-substituted linear polymers 2ad, whereas polycondensation of phthaloyl dichloride and bis[4-(3-chloro-3-phthalidyl)phenyl] ether (6) with diphenyl ether results in polymers 5 containing irregular units. 0025-1 16X/85/%03.00

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