| 摘要 |
<p>Polymer contains cyano- and/or thiocyano-substd. 9-vinylcarbazol units of formula I (where R is H, Cl, Br, I or NO2). The polymer may be a (thio) cyano-substd. (halogenated) poly-9-vinylcarbazol or a (thio)cyano-substd. copolymer of 9-vinylcarbazol with (meth)acrylate(s) and/or sytrene. Used in electrophotography, having high photo-sensitivity, low residual potential on exposure.</p> |
