Anthraquinone dyestuffs
    1.
    发明授权

    公开(公告)号:US3920702A

    公开(公告)日:1975-11-18

    申请号:US38688873

    申请日:1973-08-09

    申请人: BAYER AG

    摘要: Anthraquinone dyestuffs of the formula

    IN WHICH Y denotes a direct bond or an alkylene group which can be interrupted by hetero-atoms or sulphone groups, A denotes an alkylene group of the formula

    B denotes a direct bond or a group of the formula

    R1-R7 denotes hydrogen, alkyl or aryl, X1 and X2 denote oxygen or sulphur and Z1 and Z2 denote hydrogen or halogen and their use for the dyeing and printing of synthetic fibre materials. Dyeings obtained are distinguished by good build-up, high colour yield and excellent fastness properties, especially good fastness to light, sublimation and wet processing.

    Anthraquinone dyestuffs
    4.
    发明授权

    公开(公告)号:US3699126A

    公开(公告)日:1972-10-17

    申请号:US3699126D

    申请日:1969-06-25

    申请人: BAYER AG

    摘要: DYESTUFFS OF THE FORMULAE

    1-(R-NH-),4-(Y-NH-),DI((Z)(0-2)-)ANTHRAQUINONE (I)

    1-(R-NH-),4-Y1,5,8-DI(X-),DI((Z)(0-2)-)ANTHRAQUINONE (II)

    AND 1,4-DI(R-NH-),DI((Z)(O-2)-)ANTHRAQUINONE (III)

    WHEREIN Z IS A SUBSTITUENT, ONE X IS A MEMBER NHR AND THE OTHER IS HYDROGEN OR A SUBSTITUTED Z, Y IS AN OPTIONALLY SUBSTITUTED HYDROCARBON RESIDUE OR AN ACYL GROUP, Y1 IS HYDROGEN OR A SUBSTITUENT, AND R IS A MOIETY

    CO-B-CO-NH-E

    WHERE B IS A BOND, SATURATED OR UNSATURATED ALKYLENE WITH OR WITHOUT HETERO ATOMS AND SUBSTITUENTS, MONO OR POLYNUCLEAR ARYLENE WITH OR WITHOUT SUBSTITUENTS, CYCLOALKYLENE WITH OR WITHOUT SUBSTITUENTS OR HETEROARYLENE WITH OR WITHOUT SUBSTITUENTS AND E IS A RADICAL B OR AN ARALKYL GROUP; AS WELL AS THEIR PREPARATION AND USE AS PIGMENTS THE NOVEL DYESTUFFS ARE PIGMENT DYESTUFFS AND FREE OF SULFONIC ACID AND CARBOXYLIC ACID GROUPS.

    Process for the preparation of 1,5- and 1,8-dinitroanthraquinone
    7.
    发明授权
    Process for the preparation of 1,5- and 1,8-dinitroanthraquinone 失效
    制备1,5-和1,8-二硝基蒽醌的方法

    公开(公告)号:US3906011A

    公开(公告)日:1975-09-16

    申请号:US44082974

    申请日:1974-02-08

    申请人: BAYER AG

    CPC分类号: C07C225/34

    摘要: Preparation of 1,5- and/or 1,8-dinitroanthraquinone, characterised in that 1,5-dinitroanthraquinone is directly precipitated from the anthraquinone nitration mixtures by a adjusting the molar fraction of nitric acid to a value of gamma HNO 0.90 to 0.68 at molar ratios of nitric acid: dinitroanthraquinone of 10:1 to 80:1; 1,8-dinitroanthraquinone is then precipitated from the filtrate by adjusting the molar fraction of nitric acid to a value of gamma HNO 0.80 to 0.50 at molar ratios of nitric acid:dinitroanthraquinone of 10:1 to 80:1.

    摘要翻译: 1,5-和/或1,8-二硝基蒽醌的制备,其特征在于通过将硝酸的摩尔分数调节至γHNO + 293 = 0.90的值,从蒽醌硝化混合物中直接沉淀出1,5-二硝基蒽醌 至硝酸:二硝基蒽醌的摩尔比为0.68:10:1至80:1; 当硝酸:二硝基蒽醌的摩尔比为10:1至80:1时,通过将硝酸的摩尔分数调节至γHNO + 293 = 0.80至0.50的值,然后从滤液中沉淀出1,8-二硝基蒽醌。

    Process for the preparation of pure 1-amino anthraquinone
    10.
    发明授权
    Process for the preparation of pure 1-amino anthraquinone 失效
    纯1-氨基蒽醌的制备方法

    公开(公告)号:US3907838A

    公开(公告)日:1975-09-23

    申请号:US49973374

    申请日:1974-08-22

    申请人: BAYER AG

    CPC分类号: C07C225/34

    摘要: A 1-amino anthraquinone substantially free of diamino anthraquinone is prepared as follows: 1. Nitrating anthraquinone or a mixture which contains anthraquinone with concentrated nitric acid at a temperature of at least -20*C, the mole ratio of nitric acid to anthraquinone being at least 4:1; 2. Stopping the reaction when the anthraquinone conversion is at least 50% by cooling the reaction mixture to below 30*C and/or by adjusting the mole fraction of nitric acid to a value of 0.86 or less; 3. Precipitating 1-nitroanthraquinone by adjusting the mole ratio of nitric acid to a value of from 0.7 to 0.4 and/or by cooling the reaction mixture to a temperature of below 20*C; 4. Converting the precipitated 1-nitroanthraquinone into the corresponding 1-aminoanthraquinone; and 4. Subjecting the reaction product to vacuum distillation.

    摘要翻译: 基本上不含二氨基蒽醌的1-氨基蒽醌制备如下: