会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Process for purifying crude isoindolinone series pigments
    • 粗异喹啉酮系列颜料的纯化方法
    • US4223152A
    • 1980-09-16
    • US26663
    • 1979-04-03
    • Osamu FujiiMisao TakanoTakeshi UotaniEiji Iwamoto
    • Osamu FujiiMisao TakanoTakeshi UotaniEiji Iwamoto
    • C09B57/04C09B67/54C07D213/61C07D209/50
    • C09B57/04C09B67/0096
    • Isoindolinone pigments of an extremely high purity, which are represented by the following general formula: ##STR1## wherein R represents a carbocyclic bridge member such as:an unsubstituted phenylene or diphenylene group,a phenylene or diphenylene group substituted by chlorine atoms, methyl groups or methoxy groups, ora group expressed by the formula ##STR2## where X is oxygen or a methylene group; or R represents a heterocyclic bridge member such as: a pyridylene group; orR represents a direct bond,are prepared by a process wherein a crude isoindolinone pigment is dispersed in an aromatic hydrocarbon; (a) an alcoholate or hydroxide of an alkali metal and (b) a lower alcohol and/or water are incorporated in the crude isoindolinone pigment dispersion thereby forming an alkali metal salt of the isoindolinone pigment; and then, the so formed pigment salt is contacted with an acid thereby hydrolyzing the pigment salt into the free acid form.
    • 其中R表示碳环桥构件,例如:未取代的亚苯基或二亚苯基,被氯原子取代的亚苯基或二亚苯基,甲基或 甲氧基或由下式表示的基团:其中X是氧或亚甲基; 或R表示杂环桥构件,例如:亚吡啶基; 或R表示直接键,通过其中将粗异吲哚啉酮颜料分散在芳族烃中的方法制备; (a)将碱金属的醇化物或氢氧化物和(b)低级醇和/或水引入到粗异吲哚啉酮颜料分散体中,从而形成异二氢吲哚酮颜料的碱金属盐; 然后将如此形成的颜料盐与酸接触,从而将颜料盐水解成游离酸形式。