Process for the preparation of 1-alkylamino-anthraquinones
    1.
    发明授权
    Process for the preparation of 1-alkylamino-anthraquinones 失效
    制备1-烷基氨基 - 蒽醌的方法

    公开(公告)号:US4163747A

    公开(公告)日:1979-08-07

    申请号:US944935

    申请日:1978-09-22

    IPC分类号: C07C225/34 C07C97/24

    CPC分类号: C07C225/34

    摘要: Process for the preparation of 1-alkylamino-anthraquinones which comprises reacting 1-nitroanthraquinone with a monoalkylamine in the presence of an ether, a hydrocarbon or a mixture of an ether and a hydrocarbon. The 1-alkylamino-anthraquinones which are obtained can be employed directly as dyestuffs or used, without further purification, for the production of dyestuffs. Process of the invention results in the procurement of 1-alkylamine-anthraquinones of high purity and in high yield and avoids the formation of undesired by-products.

    摘要翻译: 1-烷基氨基 - 蒽醌的制备方法,其包括在醚,烃或醚和烃的混合物的存在下使1-硝基蒽醌与单烷基胺反应。 所得到的1-烷基氨基 - 蒽醌可直接用作染料,或不经进一步纯化用于制备染料。 本发明的方法导致采购高纯度和高产率的1-烷基胺 - 蒽醌,并避免不希望的副产物的形成。

    Process for the preparation of 1-aminoanthraquinone
    2.
    发明授权
    Process for the preparation of 1-aminoanthraquinone 失效
    制备1-氨基蒽醌的方法

    公开(公告)号:US3933867A

    公开(公告)日:1976-01-20

    申请号:US453971

    申请日:1974-03-22

    IPC分类号: C07C20060101 C07C97/24

    摘要: Process for the preparation of 1-aminoanthraquinone by reaction of 1-nitroanthraquinone with ammonia in organic solvents, characterised in that the reaction is carried out in ethers, aliphatic or cycloaliphatic hydrocarbons or optionally alkyl-substituted aromatic hydrocarbons.

    摘要翻译: 通过1-硝基蒽醌与氨在有机溶剂中的反应来制备1-氨基蒽醌的方法,其特征在于反应在醚,脂族或脂环族烃或任选的烷基取代的芳烃中进行。

    Process for the preparation of 1-nitroanthraquinone
    4.
    发明授权
    Process for the preparation of 1-nitroanthraquinone 失效
    制备1-硝基蒽醌的方法

    公开(公告)号:US3959317A

    公开(公告)日:1976-05-25

    申请号:US594254

    申请日:1975-07-09

    IPC分类号: C09B1/00 C07C79/10 C07C79/36

    摘要: Process for the preparation of 1-nitroanthraquinone by nitration of anthraquinone in the presence of highly concentrated nitric acid, characterised in that nitration is carried out at temperatures of 20.degree. to 80.degree.C, the reaction is terminated by lowering the nitric acid molar fraction in the reaction mixture to .ltoreq.0.85 by distilling off concentrated nitric acid and 1-nitroanthraquinone is precipitated by subsequently adjusting the nitric acid molar fraction to .ltoreq.0.7 to 0.4 and is separated off in a manner which is in itself known.

    摘要翻译: 通过在高浓度硝酸存在下硝化蒽醌制备1-硝基蒽醌的方法,其特征在于硝化在20-80℃的温度下进行,通过降低硝酸摩尔分数来终止反应 通过随后将硝酸摩尔分数调节至0.7至0.4,通过蒸馏浓硝酸和1-硝基蒽醌的反应混合物沉淀至0.85,并以本身已知的方式分离出来。

    Process for the preparation of 1,5- and 1,8-diamino-anthraquinone
    5.
    发明授权
    Process for the preparation of 1,5- and 1,8-diamino-anthraquinone 失效
    制备1,5-和1,8-二氨基 - 蒽醌的方法

    公开(公告)号:US3933868A

    公开(公告)日:1976-01-20

    申请号:US453810

    申请日:1974-03-22

    IPC分类号: C07C97/24

    摘要: Process for the preparation of 1,5- and/or 1,8-diaminoanthraquinone by reaction of 1,5- and/or 1,8-dinitroanthraquinone with ammonia in organic solvents, characterised in that the reaction is carried out in ethers, aliphatic or cycloaliphatic hydrocarbons or optionally alkyl-substituted aromatic hydrocarbons or in mixtures of these compounds.

    摘要翻译: 通过1,5-和/或1,8-二硝基蒽醌与氨在有机溶剂中的反应制备1,5-和/或1,8-二氨基蒽醌的方法,其特征在于反应在醚,脂族 或脂环族烃或任选的烷基取代的芳烃或这些化合物的混合物。

    Preparation of pure 1,5-dinitroanthraquinone
    6.
    发明授权
    Preparation of pure 1,5-dinitroanthraquinone 失效
    纯1,5-二硝基蒽醌的制备

    公开(公告)号:US3996251A

    公开(公告)日:1976-12-07

    申请号:US672688

    申请日:1976-04-01

    CPC分类号: C07C225/34

    摘要: A mixture of dinitroanthraquinones of which at least 35% is 1,5-dinitroanthraquinone is dissolved at elevated temperature in a halogenated aromatic hydrocarbon, a carboxylic acid nitrile or a cyclic sulphone and is thereafter cooled selectively to precipitate substantially pure 1,5-dinitroanthraquinone. Preferred solvents are 1-chloronaphthalene, sulpholane and adipic acid dinitrile. The temperature of dissolution ranges from about 120.degree. C up to the boiling point and cooling is by about 10.degree. to 200.degree. C to a temperature not below about 0.degree. C.

    摘要翻译: 其中至少35%为二硝基蒽醌的二硝基蒽醌的混合物在高温下溶解在卤代芳族烃,羧酸腈或环状砜中,然后选择性地冷却沉淀基本上纯的1,5-二硝基蒽醌。 优选的溶剂是1-氯萘,环丁砜和己二酸二腈。 溶解温度范围为约120℃至沸点,冷却约10至200℃至不低于约0℃的温度。

    Process for working up nitric acid
    8.
    发明授权
    Process for working up nitric acid 失效
    硝酸处理工艺

    公开(公告)号:US4344827A

    公开(公告)日:1982-08-17

    申请号:US164445

    申请日:1980-06-30

    IPC分类号: C01B21/46 B01D1/00 B01D3/14

    CPC分类号: C01B21/46 Y10S159/19

    摘要: Process for working up aqueous nitric acid which is of a concentration above the azeotropic concentration and contains organic compounds in solution for suspension wherein said nitric acid of a concentration about the azeotropic concentration is distilled off in one or more rectification steps until the azeotropic nitric acid is obtained. In the process, certain specified ratios of nitric acid and water to organic constituents must be maintained.

    摘要翻译: 用于处理浓度高于共沸浓度的硝酸水溶液并在悬浮溶液中含有有机化合物的方法,其中在一个或多个精馏步骤中蒸馏出浓度约为共沸浓度的硝酸,直到共沸硝酸为 获得。 在此过程中,必须保持某些特定比例的硝酸和水与有机成分。

    Process for preparing pure 1-nitroanthraquinone
    10.
    发明授权
    Process for preparing pure 1-nitroanthraquinone 失效
    纯1-硝基蒽醌的制备方法

    公开(公告)号:US4031116A

    公开(公告)日:1977-06-21

    申请号:US707130

    申请日:1976-07-20

    IPC分类号: C07C76/00

    摘要: Pure 1-nitroanthraquinone substantially free of dinitroanthraquinone is prepared by:1. Nitrating anthraquinone or a mixture which contains anthraquinone with at least 90% nitric acid at a temperature of at least 0.degree. C wherein the mole ratio of nitric acid to anthraquinone is less than 20 to 1;2. Stopping the reaction when the anthraquinone conversion is at least 50% by cooling the reaction mixture to a temperature of at most 20.degree. C and/or by adjusting the mole fraction of nitric acid in the reaction mixture to a value of at most 0.86;3. Precipitating 1-nitroanthraquinone by adjusting the mole fraction of nitric acid to a value of from 0.7 to 0.4 and/or by reducing the temperature to at most 20.degree. C; and4. Separating the precipitated 1-nitroanthraquinone and subjecting it to vacuum distillation.

    摘要翻译: 基本上不含二硝基蒽醌的纯1-硝基蒽醌通过以下方法制备: