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    • 3. 发明授权
    • Process for the production of 6,13-dihydroquinacridones and apparatus
for use for the production
    • 用于生产6,13-​​二氢喹吖啶酮的方法和用于生产的装置
    • US5610306A
    • 1997-03-11
    • US341969
    • 1994-11-16
    • Hitoshi MakiShigeki KatoShinichi AzumaMikio HayashiMasatoshi Momose
    • Hitoshi MakiShigeki KatoShinichi AzumaMikio HayashiMasatoshi Momose
    • C09B48/00B01J10/02B01J19/18C07D471/04
    • C07D471/04B01J10/02B01J19/18B01J2219/00094B01J2219/00132B01J2219/00189B01J2219/185
    • A process for producing highly pure 6,13-dihydroquinacridone, which is a suitable intermediate for effectively producing a quinacridone pigment, for a short period of time at high yields, the process comprising providing a cylindrical reactor, providing an atmosphere free of oxygen in the cylindrical reactor, heating the cylindrical reactor so that the temperature of at least a surface of an inner wall of a cylinder of the cylindrical reactor is in the range of from 250.degree. to 400.degree. C., introducing a powder of 2,5-di(arylamino)-3,6-dihydroterephthalic acid dialkyl ester or a mixture of 2,5-di(arylamino)-3,6-dihydroterephthalic acid dialkyl ester with a liquid through a feed port provided in an upper portion of the cylindrical reactor, keeping the powder or the mixture in substantial contact with the inner wall of the cylindrical reactor so that an intramolecular alcohol-elimination reaction of the 2,5-di(arylamino)-3,6-dihydroterephthalic acid dialkyl ester takes place to form 6,13-dihydroquinacridone, and taking out the 6,13-dihydroquinacridone through an outlet provided in a lower portion of the cylindrical reactor.
    • 一种生产高纯度6,13-​​二氢喹吖啶酮的方法,该方法是用于有效地制备喹吖啶酮颜料的合适的中间体,其产率高,在短时间内,该方法包括提供圆柱形反应器,在该反应器中提供无氧气氛 圆柱形反应器,加热圆柱形反应器,使得圆筒形反应器的圆筒的内壁的至少一个表面的温度在250-400℃的范围内,引入2,5-二 (芳基氨基)-3,6-二氢对苯二甲酸二烷基酯或2,5-二(芳基氨基)-3,6-二氢对苯二甲酸二烷基酯与液体的混合物,通过设置在圆筒形反应器上部的进料口, 保持粉末或混合物与圆柱形反应器的内壁充分接触,从而进行2,5-二(芳基氨基)-3,6-二氢对苯二甲酸二烷基酯的分子内醇消除反应,形成6, 13-d 并通过设置在圆筒形反应器下部的出口取出6,13-​​二氢喹吖啶酮。