Method for removing deposits from chemical reactors
    1.
    发明授权
    Method for removing deposits from chemical reactors 失效
    从化学反应堆中去除沉积物的方法

    公开(公告)号:US06986816B2

    公开(公告)日:2006-01-17

    申请号:US10484179

    申请日:2002-07-08

    IPC分类号: B08B7/00

    摘要: The invention relates to a process for the removal of deposits formed in a reaction apparatus by the precipitation of solids from a liquid reaction mixture, which process is characterized in that particles of a material that is inert under the reaction conditions are introduced into the reaction apparatus, which particles, by suitable mechanical circulation of the reaction mixture, are so moved through the reactor that, during the reaction, by striking the walls or other built-in elements, they abrasively remove precipitates adhered thereto.

    摘要翻译: 本发明涉及一种通过从液体反应混合物中沉淀固体而去除在反应装置中形成的沉积物的方法,该方法的特征在于在反应条件下将惰性物质的颗粒引入反应装置 通过反应混合物的适当的机械循环将颗粒移动通过反应器,在反应过程中,通过撞击壁或其它内置元件,它们可以磨蚀地去除附着在其上的沉淀物。

    Synthesis of aromatic amines from chloroamatics
    6.
    发明授权
    Synthesis of aromatic amines from chloroamatics 失效
    从氯化物合成芳香胺

    公开(公告)号:US5831128A

    公开(公告)日:1998-11-03

    申请号:US984554

    申请日:1997-12-03

    CPC分类号: C07C209/10

    摘要: The present invention relates to a process for the preparation of aromatic amines of the formula (I) Ar--NR.sup.1 R.sup.2 (I) in which Ar is ##STR1## and R.sup.3 to R.sup.9 independently of one another are hydrogen, C.sub.1 -C.sub.8 -alkyl, alkoxy-(C.sub.1 -C.sub.8), acyloxy-(C.sub.1 -C.sub.8), OAr, Ar, fluorine, chlorine, bromine, iodine, OH, NO.sub.2, CN, CO.sub.2 H, CHO, SO.sub.3 H, SO.sub.2 R, SOR, NH.sub.2, NH-alkyl-(C.sub.1 -C.sub.12), N-alkyl.sub.2 -(C.sub.1 -C.sub.12), NHCO-alkyl-(C.sub.1 -C.sub.12), CO-alkyl-(C.sub.1 -C.sub.12), NHCHO, COAr, CO.sub.2 Ar, CF.sub.3, CONH.sub.2, CHCHCO.sub.2 R, POAr.sub.2, PO-alkyl.sub.2 -(C.sub.1 -C.sub.12), 5-ring heteroaryl, 6-ring heteroaryl, Si-alkyl.sub.3 -(C.sub.1 -C.sub.12), where R=alkyl(C.sub.1 -C.sub.8), aryl(C.sub.5 -C.sub.10) and R.sup.1 and R.sup.2 independently of one another are hydrogen, C.sub.1 -C.sub.12 -alkyl, Ar as defined above, 5-ring heteroaryl, 6-ring heteroaryl, by reacting chloroaromatics of the formula II Ar--Cl (II) with ammonia or primary or secondary amines of the formula III R.sup.1 R.sup.2 NH (III) in which Ar and R.sup.1 and R.sup.2 are as defined above, which comprises reacting the starting materials in the presence of a palladium catalyst, a strong base and a halide cocatalyst in an inert solvent at temperatures of 80.degree.-200.degree. C.

    摘要翻译: 本发明涉及制备式(Ⅰ)Ar-NR1R2(Ⅰ)的芳香族胺的方法,其中Ar为囟素,C 1 -C 8烷基,烷氧基 - (C 1 -C 8 ),酰氧基 - (C1-C8),OAr,Ar,氟,氯,溴,碘,OH,NO2,CN,CO2H,CHO,SO3H,SO2R,SOR,NH2,NH-烷基 - (C1-C12) N-烷基-2-(C1-C12),NHCO-烷基 - (C1-C12),CO-烷基 - (C1-C12),NHCHO,COAr,CO2Ar,CF3,CONH2,CHCHCO2R,POAr2,PO-烷基 -C 12),5-环杂芳基,6-环​​杂芳基,3-烷基3-(C 1 -C 12),其中R =烷基(C 1 -C 8),芳基(C 5 -C 10)和R 1和R 2彼此独立地是氢 ,C 1 -C 12 - 烷基,如上所定义的Ar,5-环杂芳基,6-环​​杂芳基,通过使式IIAr-Cl(II)的氯芳族化合物与式IIIR1R2NH(III)的氨或伯或仲胺反应,其中 Ar和R 1和R 2如上所定义,其包括在惰性溶剂中在钯催化剂,强碱和卤助助催化剂存在下,在温度 80°-200℃

    Method for producing diaryl carbonates
    9.
    发明授权
    Method for producing diaryl carbonates 失效
    碳酸二芳基酯的制备方法

    公开(公告)号:US06469191B1

    公开(公告)日:2002-10-22

    申请号:US09868558

    申请日:2001-06-19

    IPC分类号: C07C6996

    CPC分类号: C07C68/005 C07C69/96

    摘要: A process for the production of an aromatic carbonate is disclosed. Accordingly, an aromatic hydroxy compound is reacted with carbon monoxide and oxygen in the presence of a platinum group metal catalyst, a co-catalyst, a base, and optionally a quaternary salt as well as an inert organic solvent. The reaction is carried out under conditions whereby the inert organic solvent forms an azeotrope with the water arising during the reaction. The azeotrope is then removed from the reaction mixture.

    摘要翻译: 公开了一种生产芳族碳酸酯的方法。 因此,在铂族金属催化剂,助催化剂,碱,任选的季盐以及惰性有机溶剂的存在下,芳族羟基化合物与一氧化碳和氧反应。 该反应在惰性有机溶剂与反应期间产生的水形成共沸物的条件下进行。 然后从反应混合物中除去共沸物。

    Method for reprocessing reaction mixtures containing diaryl carbonate
    10.
    发明授权
    Method for reprocessing reaction mixtures containing diaryl carbonate 失效
    后处理含有碳酸二芳基酯的反应混合物的方法

    公开(公告)号:US06437166B1

    公开(公告)日:2002-08-20

    申请号:US09868412

    申请日:2001-06-14

    IPC分类号: C07C6996

    CPC分类号: C07C68/08 C07C69/96

    摘要: A process for the work up of reaction mixtures containing diaryl carbonate, aromatic hydroxy compound, water, base and quaternary salt, which are obtained in the preparation of diaryl carbonates by direct carbonylation of aromatic hydroxy compounds, is described. In the process of the present invention an adduct of diaryl carbonate and aromatic hydroxy compound is crystallized from the reaction mixture. A distillate comprising aromatic hydroxy compound is removed from the liquid phase either prior to or after crystallization of the adduct of diaryl carbonate and aromatic hydroxy compound. The liquid phase remaining after the crystallization and distillation steps may be recycled, without further work up, back to the direct carbonylation process step by which the diaryl carbonate is initially prepared.

    摘要翻译: 描述了通过芳族羟基化合物的直接羰基化制备碳酸二芳酯中获得的包含碳酸二芳基酯,芳族羟基化合物,水,碱和季盐的反应混合物的处理方法。 在本发明的方法中,碳酸二芳酯和芳族羟基化合物的加合物从反应混合物中结晶。 在碳酸二芳基酯和芳族羟基化合物的加合物结晶之前或之后,从液相中除去包含芳族羟基化合物的馏出物。 在结晶和蒸馏步骤后残留的液相可以循环使用,而不需要进一步的后处理,回到最初制备碳酸二芳基酯的直接羰基化工艺步骤。