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Poly[oxy-(2,5-dibenzoyl-1,4-phenyleneoxy)-1,4-phenylenel] (3) was prepared by the aromatic nucleophilic substitution reaction of 2,5-difluoro-4-benzoylbenzophenone (2) with hydroquinone (1) in the presence of potassium carbonate in diphenylsulfone. The polycondensation was conducted at 150–320°C for 4 h and produced polymer 3 at excellent yield levels. Polymer 3 was characterized by elemental analysis,...
Poly(arylene ether)s (9) containing pendant benzoyl groups were prepared by the aromatic substitution reaction of 2,5-difluoro-4-benzoylbenzophenone (7) with bisphenol (8) in the presence of potassium carbonate in N,N-dimethylacetamide. The polycondensation proceeded smoothly at 170°C and produced the desired poly(arylene ether)s with inherent viscosities up to 0.79 dl/g. The polymers were quite...
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