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    • 1. 发明授权
    • Process for the production of dis-azo pigment
    • 偶氮颜料生产工艺
    • US5622555A
    • 1997-04-22
    • US417112
    • 1995-04-05
    • Yoshio MuramatsuAtaru ChibaHitoshi Maki
    • Yoshio MuramatsuAtaru ChibaHitoshi Maki
    • C09B67/06C09B67/20C09B27/00
    • C09B67/0003
    • A process for the production of a dis-azo pigment having excellent dispersibility, high tinting strength and high masking strength, by a simple method under an improved working environment, which is improved in a drying step and can omit the pulverization step of a conventional process, the present process comprising(a) a first step of forming an aqueous paste or slurry containing a synthesized dis-azo pigment into fine particles under hot air at 100.degree. to 300.degree. C. for a short period of time within 0.5 hour, and at the same time, removing water from the formed fine particles to form a powder, and(b) a second step of keeping the powder under heat at 50.degree. to 150.degree. C. for 0.5 to 10 hours.
    • 通过在改善的工作环境下的简单方法生产具有优异分散性,高着色强度和高掩蔽强度的偶氮颜料的方法,其在干燥步骤中得到改进并且可以省略常规方法的粉碎步骤 本方法包括(a)第一步骤,在100℃至300℃的热空气下,在0.5小时内将短时间内将含有合成的偶氮颜料的含水糊剂或浆料形成微粒;以及 同时从形成的细颗粒中除去水以形成粉末,和(b)将粉末在50至150℃下保持0.5至10小时的第二步骤。
    • 8. 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。
    • 9. 发明授权
    • Method of producing disazo pigment
    • US06303762B1
    • 2001-10-16
    • US09827098
    • 2001-04-06
    • Hitoshi MakiHideto NoguchiKenji KitamuraMasami Shirao
    • Hitoshi MakiHideto NoguchiKenji KitamuraMasami Shirao
    • C09B6720
    • C09B67/0055C09B41/006
    • Disclosed is a method of producing a disazo pigment, which a coupling reaction is carried out while feeding, into an acidic aqueous solution, a tetrazo aqueous solution containing a tetrazo component of benzidines and a coupler aqueous solution containing a coupling component, wherein the coupling component is a mixture comprising a main component represented by the formula (1): CH3COCH2CONH—X, wherein X represents a phenyl group optionally having one or the same or different plural substituents selected from the group consisting of a methyl group, methoxy group and chlorine atom; a first additional component represented by the formula (2): CH3COCH2CONH—Y, wherein Y represents a phenyl group having a substituent selected from the group consisting of —CONR2 group, —SO2NR2 group and —NHCOR group, and the phenyl group may further have a substituent selected from the group consisting of a methyl group, methoxy group, chlorine atom, —CONR2 group, —SO2NR2 group and —NHCOR group, and wherein Rs may be the same or different mutually, and represent a hydrogen atom, C1 to C4 alkyl group (the alkyl groups may be mutually connected to form a ring) or C1 to C4 alkylene NR′2, further wherein R's represent a hydrogen atom or C1 to C4 alkyl groups which may be mutually different (the alkyl groups may be mutually connected to form a ring); and, a second additional component represented by the formula (3): CH3COCH2CONH—Z, wherein Z represents a phenyl group substituted by any one of a carboxyl group or alkali metal salts thereof, hydroxyl group or sulfonic acid group or alkali metal salts thereof, and said phenyl group may further has a substituent selected from the group consisting of a methyl group, methoxy group, chlorine atom, carboxyl group or alkali metal salts thereof, hydroxyl group or sulfonic acid group or alkali metal salts thereof. According to the method, disazo pigments can be obtained which manifest excellent transparency and flowability of the inks produced therefrom, and excellent flushing property and flushing drain coloration resistance in the pigment production process, or excellent dispersibility when ink is formed under dry condition.