Recording material comprising crystal of fluoran compound
    9.
    发明授权
    Recording material comprising crystal of fluoran compound 失效
    包含荧烷化合物晶体的记录材料

    公开(公告)号:US5300473A

    公开(公告)日:1994-04-05

    申请号:US28911

    申请日:1993-03-08

    摘要: Disclosed are a crystal of a fluoran compound having the formula comprising exhibiting high peaks at diffraction angles (2.theta.) of 7.5.degree. and 17.0.degree. and relatively high peaks at diffraction angles (2.theta.) of 15.1.degree., 19.1.degree., 21.5.degree. and 25.3.degree. in an X-ray diffraction diagram by the CU-K.alpha. beam and a crystal of a fluoran compound having the formula (II) comprising exhibiting high peaks at diffraction angles (2.theta.) of 5.5.degree. and 19.2.degree. in an X-ray diffraction diagram by the CU-K.alpha. beam, which is useful as a color forming compound in recording materials. ##STR1##

    摘要翻译: 公开了具有以下通式的荧烷化合物的晶体,其包括在7.5度和17.0度的衍射角(2(θ))处呈现高峰,并且在15.1度,19.1度的衍射角(2(θ))处具有相对高的峰, 通过CU-K(α)光束在X射线衍射图中为21.5度和25.3度,并且具有式(II)的荧烷化合物的晶体包括在5.5度的衍射角(2(θ))处表现出高峰 在通过CU-K(α)光束的X射线衍射图中为19.2度,其可用作记录材料中的成色化合物。 (*化学结构*)(I)(*化学结构*)(II)