Based on a previous work the polymerization mechanism of anthracene was studied and it was found that the initial reaction step is represented by the formation of a radical ion.Poly(9,lO-anthrylene) was prepared in order to study the relevant properties with respect to its technological applicability. Pure poly(9,lO-anthry1ene)s even of relatively low molecular weight (about 3000) are infusable and nearly insoluble. Poly(9,lO-anthry1ene)s show good photoconduction. *) Postadresie: t)sterreichisches Kunststoffinstitut, Obj. 213, Franz Grill-Str. 5, Arsenal, 1030 Wien.'

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Attempts were made to obtain fusible or soluble derivatives of poly(9,lO-anthrylene) by incorporation of intermediate links in 9-and 10-position, i.e., by preparing a polyester and a polyanhydride of 9,10-anthracenediwboxylic acid as well as a polywbonate of 9, Danthrahydroquinone. The results showed that the preparation of the polyester is very difficult and that its thermal resistance is very low (m.p. 14O"C, decomposition). The polyanhydride could be obtained in good yields, but it is insoluble and decomposes at the melting point. The polycarbonate could easily be prepared, but it decomposes in a strongly exothermic reaction at 185 "C and forms anthraquinone. *) Postanschrift: Osterreichisches Kunststoffinstitut Obj. 213, Franz Grill-Strme 3, Arsenal 1030 Wien.

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