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Influence of isomerism of difluorobenzophenone on the synthesis and properties of poly(arylene ether ketones) |
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| Authors: | Salazkin S N Shaposhnikova V V Donetskii K I Gorshkov G V Blagodatskikh I V Dubrovina L V Sakunts A A Petrovskii P V Komarova L I Genina M M Tkachenko A S Askadskii A A Bychko K A Kazantseva V V |
| Institution: | (1) A. N. Nesmeyanov Institute of Organoelement Chemistry, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russian Federation |
| Abstract: | The influence of isomerism of difluorobenzophenone on the efficiency of polycondensation and the properties of homo- and copoly(arylene ether ketones) was studied. The latter were prepared by the reaction of 2,4"- and 4,4"-difluorobenzophenone with potassium diphenolates of bisphenol À and phenolphthalein in N,N-dimethylacetamide. A high content of an admixture of the 2,4"-isomer in 4,4"-difluorobenzophenone decreases the molecular weight of related poly(arylene ether ketones) and has no substantial effect on their glass transition temperature. |
| Keywords: | 2 4"-difluorobenzophenone 4 4"-difluorobenzophenone isomers potassium diphenolate nucleophilic substitution polycondensation poly(arylene ether ketones) molecular weight glass transition temperature |
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