| 摘要 |
A long-life electrophotographic photosensitive body having excellent wear resistance and crack resistance can be obtained by using a polycarbonate resin composition, which is obtained by blending 0.01 - 5 parts by weight of a silicone-modified polyurethane per 100 parts by weight of a polycarbonate resin, as a binder for photosensitive layer (or in case when the photosensitive layer is of multilayer type, for at least an electron transport layer) of the electrophotographic photosensitive body. The silicone-modified polyurethane is obtained by reacting a diol component (a) represented by the general formula (I) below, an active hydrogen-containing polysiloxane compound (b), a polyisocyanate compound (c) and, if necessary, a chain extender (d). (In the formula (I), R 1 and R 2 independently represent a hydrogen atom or an alkyl group; R 3 represents a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom or an alkoxycarbonyl group; M represents a single bond, a substituted or unsubstituted alkylene group or an oxyalkylene group; and n represents an integer of 0 - 4.) |
