Aromatic homopolymers obtained by precipitation polycondensation: 1. Synthesis of naphthalene-containing polyketones

doi:10.1016/0032-3861(95)92030-I

Polymer

Volume 36, Issue 18, 1995, Pages 3575-3583

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Abstract

High molecular weight film-forming semicrystalline aromatic polyketones with a regular structure were obtained by precipitation electrophilic Friedel-Crafts polycondensation of 2,6-naphthalenedicarboxylic acid chloride with diphenyl ether, 1,4-bis(p-phenoxy) benzophenone and 1,4-bis(p-phenoxybenzoyl) benzene. Using ¹H and ¹³C n.m.r. spectroscopy, the polyketones obtained were shown to be linear with para-substituted arylene fragments in the main chain. These polymers are soluble in strong protic acids and in common organic solvents, such as dichloroacetic acid and CHCl₃/CF₃CO₂H mixtures. Depending on the chemical structure, these ‘as-made’ polyketones were found to show multiple melting behaviour on heating.

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^∗: Permanent address: Institute of Organic Chemistry, Prospekt Oktyabrya 69, Ufa-450054, Russia

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Polymer paperAromatic homopolymers obtained by precipitation polycondensation: 1. Synthesis of naphthalene-containing polyketones

Abstract

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Aromatic homopolymers obtained by precipitation polycondensation: 1. Synthesis of naphthalene-containing polyketones