Aromatic Polyketones Research Articles

Some patterns of the synthesis of aromatic polyketones by precipitative polycondensation

The authors have studied the patterns of the synthesis of aromatic polyketones by the reaction of electrophilic substitution on precipitative polycondensation of diphenyl oxide with isophthaloyl chloride, diphenyl oxide with the diacid chloride of 3,3-bis(4′-carboxyphenyl) phthalide and homopolycondensation of p-phenoxybenzoyl chloride in solvents of varied nature. It is shown that growth of the polyketone macromolecules also continues on isolation of the polymer-catalyst complex from solution into a separate phase. The structure of the polymers formed has been established.

Structure and properties of new polyketones

New aromatic polyketones were obtained by reaction of terephthalolyl chloride with phenanthrene, naphthalene, 2-methylnaphthalene or 2,3-dimethylnaphthalene in the presence of anhydrous AlCl3 in various solvents. The influence of the structure of the aromatic hydrocarbon on the thermal stability of the polymer was examined.

The mass spectra of some aromatic polyketones

AbstractThe behaviour of some aromatic tri‐ and tetraoxo compounds and of their p‐substituted derivatives under electron‐impact has been investigated by means of high and low resolution mass spectrometry, metastable refocusing and deuterium labelling. Some characteristic fragmentation processes observed with these compounds indicate that their molecular ions exist in the enol form. The formation of principal fragment ions is discussed.

Syntheses of aromatic polyketones and aromatic polyamide

AbstractHigh molecular weight aromatic polyketones were prepared from p‐ and m‐phenoxybenzoic acid in polyphosphoric acid by heating the reaction mixture at 100°C. High molecular weight aromatic polyamide was derived from the polyketone obtained through Schmidt reaction or Beckmann rearrangement. The polyamide obtained by Schmidt reaction was found to have some regularity in an arrangement of its repeating units. The thermal stability of the polyketone and the polyamide were good.