Crystal of fluoran compound, preparation process of the crystal, and recording material comprising the crystal
    3.
    发明公开
    Crystal of fluoran compound, preparation process of the crystal, and recording material comprising the crystal 失效
    荧烷化合物的晶体,其制造方法及记录材料,其中包含晶体。

    公开(公告)号:EP0477623A1

    公开(公告)日:1992-04-01

    申请号:EP91115067.0

    申请日:1991-09-06

    摘要: Disclosed are a crystal of a fluoran compound having the formula (I) comprising exhibiting high peaks at diffraction angles (2ϑ) of 7.5° and 17.0° and relatively high peaks at diffraction angles (2ϑ) of 15.1° , 19.1° , 21.5° and 25.3° in an X-ray diffraction diagram by the Cu-Kα beam and a crystal of a fluoran compound having the formula (II) comprising exhibiting high peaks at diffraction angles (2ϑ) of 5.5° and 19.2° in an X-ray diffraction diagram by the Cu-Kα beam, which is useful as a color forming compound in recording materials.

    摘要翻译: 本发明公开了具有包含在15.1°的衍射角(2θ处)的7.5°和17.0°和相对高的峰值的衍射角(2θ处)表现出高的峰的式(I)的荧烷化合物的结晶,19.1°,21.5 DEG和25.3 DEG在由铜的Kα阿尔法束的X射线衍射图,并具有包括在5.5 DEG的衍射角(2θ处)和19.2 DEG在一个表现出高的峰的式(II)荧烷化合物的晶体 通过在Cu-K阿尔法束,其作为一个颜色形成记录材料化合物有用的X射线衍射图。