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22 条记录 (耗时 0.016 秒)

    Process for the adiabatic preparation of mononitrohalogenobenzenes
    7.
    发明授权
    Process for the adiabatic preparation of mononitrohalogenobenzenes 失效
    绝热制备单硝基卤代苯的工艺

    公开(公告)号：US5714647A

    公开(公告)日：1998-02-03

    申请号：US785577

    申请日：1997-01-21

    申请人： Heinz Ulrich Blank ,  Helmut Judat ,  Bernd-Michael Konig

    发明人： Heinz Ulrich Blank ,  Helmut Judat ,  Bernd-Michael Konig

    IPC分类号： C07C201/08 ,  C07C201/16 ,  C07C205/12 ,  C07C205/00

    CPC分类号： C07C201/08

    摘要： Mononitrohalogenobenzenes can be prepared by mixing halogenobenzene, nitric acid, sulphuric acid and water intensively with one another, simultaneously or in succession in their total quantity, and by redispersing them at least twice in the case of continuous preparation, applying a mixing energy of 1-40 watts per liter of the overall reaction mixture, preferably 3-30 W/l, largely suppressing back-mixing in the continuous procedure, and observing adiabatic reaction conditions.

    摘要翻译： 一硝基卤代苯可以通过将卤代苯，硝酸，硫酸和水彼此同时或相继地以总量相互重叠混合，并且在连续制备的情况下将它们再分散至少两次来制备， 总体反应混合物为40瓦/升，优选为3-30W / l，在连续方法中大大抑制了反混合，并且观察绝热反应条件。

    Process for the adiabatic preparation of mononitrotoluenes
    8.
    发明授权
    Process for the adiabatic preparation of mononitrotoluenes 失效
    制备单硝基甲苯的绝热方法

    公开(公告)号：US5648565A

    公开(公告)日：1997-07-15

    申请号：US679323

    申请日：1996-07-12

    申请人： Bernd-Michael Konig ,  Helmut Judat ,  Heinz Ulrich Blank

    发明人： Bernd-Michael Konig ,  Helmut Judat ,  Heinz Ulrich Blank

    IPC分类号： C01B17/88 ,  C07C201/08 ,  C07C201/16 ,  C07C205/06 ,  C07C205/00

    CPC分类号： C07C201/08

    摘要： Mononitrotoluenes can be prepared by intensively mixing together toluene, nitric acid, sulphuric acid and water, simultaneously or successively in their total amount, and, in the case of continuous preparation, redispersing the mixture at least twice, for which purpose a mixing energy of 1 to 40 watts per liter of the total reaction mixture, preferably 3 to 30 W/l, is employed per volume of the reactor, and, for the continuous procedure, the back mixing is substantially repressed. Adiabatic reaction conditions are maintained.

    摘要翻译： 单硝基甲苯可以通过将甲苯，硝酸，硫酸和水同时或相继浓缩在一起而制备，并且在连续制备的情况下，将混合物再分散至少两次，为此目的的混合能量为1 至40瓦/升的总反应混合物，优选3至30W / l，并​​且对于连续方法，背混合基本上被压制。 保持绝热反应条件。

    Process for the purification of crude 2,2-bis-(3,5-dimethyl-4-hydroxyphenyl)-propane
    9.
    发明授权
    Process for the purification of crude 2,2-bis-(3,5-dimethyl-4-hydroxyphenyl)-propane 失效
    粗制2,2-二 - （3,5-二甲基-4-羟苯基） - 丙烷的纯化方法

    公开(公告)号：US4990686A

    公开(公告)日：1991-02-05

    申请号：US457419

    申请日：1989-12-27

    申请人： Gunter Rauchschwalbe ,  Heinz-Ulrich Blank ,  Volkmar Handschuh

    发明人： Gunter Rauchschwalbe ,  Heinz-Ulrich Blank ,  Volkmar Handschuh

    IPC分类号： C07C37/84 ,  C07C39/16

    CPC分类号： C07C37/84

    摘要： Crude 2,2-bis-(3,5-dimethyl-4-hydroxyphenyl)propane (=tetramethyl-bisphenol A=TMBPA) can be purified by recrystallization, if C.sub.1 -C.sub.4 -monoalcohols with a water content of 2 to 40% by weight relative to the total weight of alcohol and water are used in an amount of 70 to 250% by weight, relative to the amount of TMBPA and the recrystallization is carried out at a temperature of 65.degree. to 150.degree. C.

    摘要翻译： 通过重结晶可以纯化2,2-二 - （3,5-二甲基-4-羟基苯基）丙烷（=四甲基 - 双酚A = TMBPA），如果水含量为2〜40％的C 1 -C 4 - 一元醇通过 相对于醇和水的总重量的重量相对于TMBPA的用量为70〜250重量％，在65〜150℃的温度下进行再结晶。

    Process for isolating dinitronaphthalenes
    10.
    发明授权
    Process for isolating dinitronaphthalenes 失效
    分离食品的方法

    公开(公告)号：US4053526A

    公开(公告)日：1977-10-11

    申请号：US672689

    申请日：1976-04-01

    申请人： Heinz Ulrich Blank ,  Friedrich Durholz ,  Guido Skipka

    发明人： Heinz Ulrich Blank ,  Friedrich Durholz ,  Guido Skipka

    IPC分类号： C07C205/05 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C79/10

    CPC分类号： C07C201/16

    摘要： 1,5- AND 1,8-DINITRONAPHTHALENES ARE ISOLATED FROM MIXTURES OF ISOMETRIC DINITRONAPHTHALENES AT LEAST CONTAINING THE SAME. The mixture of isomers is treated successively with a more polar solvent and a less polar aromatic solvent for dinitronaphthalenes thereby dissolving the mixture of isomers except for 1,5-dinitronaphthalenes which remains largely undissolved in the more polar solvent. The residual mixture of isomers is subsequently treated, after removal of the more polar solvent, with a less polar aromatic solvent at elevated temperatures in which 1,8-dinitronaphthalenes remains as a largely insoluble residue.