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Novel squarium compound and its preparation

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专利汇可以提供Novel squarium compound and its preparation专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:The squarium compound of formula I (X
1 is H, F or Br; X
2 W X
5 are H, F or Cl).
USE: A charge generation substance of the photosensitive material for electrophotography. Applicable to a semiconductor laser printer, and usable widely as an intelligent copier. It can be applied also as an optical recording medium such as laser disc and an organic solar cell, etc.
PREPARATION: The compound of formula I can be prepared by reacting 3,4-dihydroxy-3-cyclobutene-1,2-dione of formula II with the aniline derivative of formula III, e.g. in n-butyl alcohol or amyl alcohol at 120W140°C. The compound of formula I has flat spectrometric sensitivity over a wavelength range of 400W 850nm, and exhibits sufficiently high photosensitivity in whole visible range and near-infrared range.
COPYRIGHT: (C)1985,JPO&Japio,下面是Novel squarium compound and its preparation专利的具体信息内容。

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