CROSSLINKED POLYSTYRENE-BASED COMPOUND HAVING HYDRAZONE GROUP IN SIDE CHAIN, PRODUCTION THEREOF AND ELECTROPHOTOGRAPHIC SENSITIVE UNIT USING THE SAME

摘要

PURPOSE:To obtain the subject new polymer, useful as a charge-transfer material having high mobility and excellent in mechanical strength by reacting a styrene-based copolymer having a specific structure with a specified diisocyanate compound. CONSTITUTION:The objective polymer, obtained by reacting a styrene-based copolymer composed of units expressed by formulas I and II (R1 is H, 1-4C alkyl, alkoxyl, etc.) with a diisocyanate compound (e.g. 1,3-benzene diisocyanate) expressed by formula III (R2 is H or 1-4C alkyl) and having units expressed by formulas I and IV. Furthermore, the copolymer having the units expressed by formulas I and II is obtained by protecting, e.g. aldehyde group of 4- formylstyrene prepared by a well-known method, then copolymerizing the resultant compound with 4-vinylbenzyl alcohol, subsequently removing the protecting groups of the aforementioned copolymer by hydrolysis and then condensing the prepared compound with a 1,1-diarylhydrazine compound.