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    • 5. 发明公开
    • 디니트로톨루엔의 제조 방법
    • 生产西妥昔单抗的方法
    • KR1020060130203A
    • 2006-12-18
    • KR1020067018074
    • 2005-02-02
    • 바스프 에스이
    • 뷔트너요하네스막켄로쓰볼프강헤르만하인리히코니에츠니피터게바우어위르겐
    • C07C201/08C07C205/06
    • C07C201/08C07C201/14C07C205/06
    • The invention relates to a method for producing dinitrotoluene, comprising the steps of a) reacting toluene with nitric acid in the presence of sulphuric acid to give mononitrotoluene, b) separating the reaction product of step a) into a mononitrotoluene-containing organic phase and a sulphuric acid-containing aqueous phase, c) reacting the mononitrotoluene-containing organic phase with nitric acid in the presence of sulphuric acid to give dinitrotoluene, d) separating the reaction product of step c) into a dinitrotoluene- containing organic phase and a sulphuric-acid containing aqueous phase, whereby the reaction product of step a) contains 3.0 to 8 wt. % of toluene, in relation to the organic phase, and 0.1 to 1.2 wt. % of nitric acid, in relation to the aqueous phase and the phase separation of step b) is carried out in such a manner that further reaction of toluene with nitric acid is prevented.
    • 本发明涉及二硝基甲苯的制备方法,包括以下步骤:a)在硫酸存在下使甲苯与硝酸反应得到单硝基甲苯,b)将步骤a)的反应产物分离成含有单硝基甲苯的有机相和 含有硫酸的水相,c)在硫酸存在下使含有单硝基甲苯的有机相与硝酸反应,得到二硝基甲苯,d)将步骤c)的反应产物分离成含二硝基甲苯的有机相和含硫酸的有机相, 含酸水相,其中步骤a)的反应产物含有3.0-8重量% 相对于有机相的甲苯的%,和0.1至1.2重量% 相对于水相和步骤b)的相分离,硝酸的百分比以防止甲苯与硝酸进一步反应的方式进行。