Abstract
Abstract Thermosetting resins composed of triarylmethane structure were prepared by heating a mixture of a polycyclic aromatic compound and an aromatic aldehyde in the presence of an acid catalyst. The resin prepared from the mixture of pyrene and terephthalaldehyde exhibited scarcely any weight loss up to 530 °C under nitrogen. While the resin from anthracene has such high carbon yield as 70% at 800 °C, although its thermostability is somewhat inferior.
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