The invention is directed to a novel disazo compound represented by the formula (I)
wherein Q is a substituted or unsubstituted phenyl or naphthyl group; Me is copper, nickel, zinc or iron ; and Z is hydrogen, lower alkyl, lower alkoxyl, sulfo, or substituted or unsubstituted amino; and also to a polarizing film having said disazo compound incorporated into a polarizing film base. The polarizing film exhibits high polarizing activities comparable to those of an iodine-containing polarizing film, and also has excellent durability.
本发明涉及一种由式 (I) 表示的新型二氮唑化合物
其中 Q 是取代或未取代的苯基或
萘基;Me 是
铜、
镍、
锌或
铁;Z 是氢、低级烷基、低级烷氧基、磺基或取代或未取代的
氨基;本发明还涉及一种在偏光膜基中加入了上述二氮唑化合物的偏光膜。该偏振膜具有与含
碘偏振膜相当的高偏振活性,并且具有极佳的耐久性。