Process for producing aminobenzylamines
    31.
    发明授权
    Process for producing aminobenzylamines 失效
    生产氨基苄胺的方法

    公开(公告)号:US4751328A

    公开(公告)日:1988-06-14

    申请号:US931954

    申请日:1986-11-24

    IPC分类号: C07C85/11

    摘要: Aminobenzylamines are produced by catalytically reducing o-, m- or p-nitrobenzaldoxime in an organic solvent in the presence of a compound selected from the group consisting of (a) boric acid, phosphoric acid and/or anhydrides thereof, (b) CO.sub.2 gas and (c) an organic acid. The starting material, nitrobenzaldoxime is produced by reaction of the corresponding nitrobenzaldehyde with hydroxylamine.

    摘要翻译: 氨基苄胺通过在选自(a)硼酸,磷酸和/或其酸酐的化合物存在下,在有机溶剂中催化还原邻 - ,间 - 或对 - 硝基苯甲醛肟来制备,(b)CO 2气体 和(c)有机酸。 原料硝基苯甲醛肟是通过相应的硝基苯甲醛与羟胺的反应制得的。

    Thermochromic materials
    39.
    发明授权
    Thermochromic materials 失效
    热变色材料

    公开(公告)号:US5281570A

    公开(公告)日:1994-01-25

    申请号:US916790

    申请日:1992-07-22

    IPC分类号: C09K9/02 B41M5/28

    摘要: A reversible thermochromic material, preferably in the form of a microcapsule, comprising:(a) an electron donative color former;(b) a sulfide, sulfoxide or sulfone containing a hydroxy phenyl radical; and(c) a chemical compound selected from alcohols, esters, ethers, ketones, carboxylic acids or acid amides,chromatizes very brightly and in a dense color, generates a change of chromic hue (colored - colorless) within a narrow temperature range and provides a stable thermochromatism on a long term basis.

    摘要翻译: 一种可逆的热变色材料,优选为微胶囊形式,包括:(a)一种给电子着色剂; (b)含有羟基苯基的硫化物,亚砜或砜; 和(c)选自醇,酯,醚,酮,羧酸或酰胺的化合物,非常明亮和致密的着色,在窄的温度范围内产生铬色调(着色 - 无色)的变化,并提供 长期稳定的热色素。