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    Method for synthesis of oximes
    14.
    发明授权
    Method for synthesis of oximes 有权
    肟的合成方法

    公开(公告)号：US06927308B2

    公开(公告)日：2005-08-09

    申请号：US10733278

    申请日：2003-12-12

    Applicant: Stefan Leininger ,  Juergen Herwig ,  Martin Roos ,  Georg Oenbrink

    Inventor： Stefan Leininger ,  Juergen Herwig ,  Martin Roos ,  Georg Oenbrink

    IPC: B01J29/89 ,  B01J38/00 ,  C07B61/00 ,  C07C249/04 ,  C07C249/14 ,  C07C251/44 ,  C07C249/08

    CPC classification number: C07C249/04 ,  C07C2601/20 ,  C07C251/44

    Abstract: An oxime is synthesized by ammoximation of a carbonyl compound. In stage (i) of the process, a carbonyl compound containing 6 to 20 C atoms is reacted with ammonia and hydrogen peroxide in the presence of a) an organic solvent that is a1) at least partly water-soluble, a2) stable under ammoximation conditions, a3) has a boiling point of higher than 100° C. and/or is capable of forming a two-phase azeotrope with water, and b) a titanium-containing heterogeneous catalyst. After the reaction, the catalyst is separated from the reaction mixture. The oxime is crystallized and separated from the reaction mixture. Water is removed from the remaining mother liquor, provided the mother liquor is a two-phase system in which one of the phases is an aqueous phase. Water or a water-containing two-phase azeotrope is distilled off from the mother liquor, while the distillation bottoms and, optionally, the predominantly organic phase of the azeotrope are recycled to stage (i).

    Abstract translation: 通过羰基化合物的肟化合成肟。 在该方法的阶段（i）中，在a）至少部分水溶性的有机溶剂存在下，使含有6-20个碳原子的羰基化合物与氨和过氧化氢反应，a2）在氨肟化下稳定 条件a3）的沸点高于100℃，和/或能够与水形成两相共沸物，和b）含钛的非均相催化剂。 反应后，将催化剂与反应混合物分离。 将肟结晶并与反应混合物分离。 如果母液是其中一相是水相的两相系统，则从剩余的母液中除去水。 从母液中蒸馏掉水或含水的两相共沸物，同时将蒸馏塔底物和任选的共沸物的主要有机相再循环至阶段（i）。

    Purification method of cyclohexanone-oxime
    15.
    发明申请
    Purification method of cyclohexanone-oxime 有权
    环己酮肟的纯化方法

    公开(公告)号：US20030013916A1

    公开(公告)日：2003-01-16

    申请号：US10180021

    申请日：2002-06-27

    Applicant: ENICHEM S.p.A.

    Inventor： Masami Fukao ,  Francesco Cainelli ,  Roberto Tessari ,  Piero Furlan

    IPC: C07C249/14 ,  C07C251/44

    CPC classification number: C07C249/14 ,  C07C251/44

    Abstract: The invention relates to a purification method of cyclohexanone-oxime in a solution of solvents immiscible with water, which consists in washing said solutions with water or with an aqueous solution of a base having a pK

    Abstract translation: 本发明涉及在与水不混溶的溶剂溶液中的环己酮 - 肟的纯化方法，该方法包括用水或用pK <5的碱的水溶液洗涤所述溶液或通过环己酮 - 肟溶液 通过弱碱性离子交换树脂和任选还通过弱酸离子交换树脂。

    Preparation of Bisoximes
    16.
    发明授权
    Preparation of Bisoximes 失效
    二肟的制备

    公开(公告)号：US5929279A

    公开(公告)日：1999-07-27

    申请号：US930635

    申请日：1997-10-07

    Applicant: Ruth Muller ,  Remy Benoit ,  Herbert Bayer ,  Norbert Gotz ,  Hubert Sauter

    Inventor： Ruth Muller ,  Remy Benoit ,  Herbert Bayer ,  Norbert Gotz ,  Hubert Sauter

    IPC: C07D231/12 ,  C07B61/00 ,  C07C249/04 ,  C07C249/12 ,  C07C249/14 ,  C07C251/38 ,  C07C251/48 ,  C07C255/62 ,  C07D261/08

    CPC classification number: C07C249/04 ,  C07C249/14

    Abstract: A process for the preparation of largely isomerically pure .alpha.-bisoximes of the formula IaR.sup.1 O--N.dbd.CR.sup.2 --CR.sup.3 .dbd.N--OR.sup.4 Iawhere the groups R.sup.1 O-- and R.sup.2 on the N.dbd.C bond are cis to one another and where the radicals have the following meanings:R.sup.1 and R.sup.4 are hydrogen or a C-organic radical;R.sup.2 is hydrogen, cyano, nitro, hydroxyl, amino, halogen or an organic radical which can be bonded to the structure directly or via an oxygen, sulfur or nitrogen atom;R.sup.3 is hydrogen, cyano, nitro, hydroxyl, amino, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, alkylamino, dialkylamino or cycloalkyl,from a mixture of the isomers of the a-bisoximes Ia and Ib ##STR1## is described.

    Abstract translation: PCT No.PCT / EP96 / 01306 Sec。 371日期1997年10月7日第 102（e）日期1997年10月7日PCT 1996年3月25日PCT公布。 WO96 / 32373 PCT出版物 日期1996年10月17日制备式IaR1O-N = CR2-CR3 = N-OR4的大部分异构纯的α-二肟的制备方法，其中N = C键上的基团R 1 O-和R 2彼此是顺式的，其中 基团具有以下含义：R 1和R 4是氢或C-有机基团; R2是氢，氰基，硝基，羟基，氨基，卤素或有机基团，其可以直接或通过氧，硫或氮原子与结构键合; 描述了α-二肟Ia和Ib的异构体的混合物中的R 3为氢，氰基，硝基，羟基，氨基，卤素，烷基，卤代烷基，烷氧基，卤代烷氧基，烷硫基，烷基氨基，二烷基氨基或环烷基。

    Storability of molten cyclohexanone oxime
    18.
    发明授权
    Storability of molten cyclohexanone oxime 失效
    熔融环己酮肟的储存性

    公开(公告)号：US4931592A

    公开(公告)日：1990-06-05

    申请号：US429799

    申请日：1989-10-31

    Applicant: Hugo Fuchs ,  David Agab ,  Gerald Neubauer ,  Josef Ritz

    Inventor： Hugo Fuchs ,  David Agab ,  Gerald Neubauer ,  Josef Ritz

    IPC: C07C249/14 ,  C07C251/44

    CPC classification number: C07C249/14

    Abstract: The storability of molten cyclohexanone oxime containing 0.5-15% by weight of cyclohexanone and 1-8% by weight of aqueous ammonium bisulfate solution is improved by washing the molten cyclohexanone oxime with a 10-42% strength by weight aqueous ammonium sulfate solution and maintaining a pH of 4.5-5.8.

    Abstract translation: 通过用10-42％重量的硫酸铵水溶液洗涤熔融的环己酮肟，维持熔融环己酮肟的含量为0.5-15％（重量）的环己酮和1-8％（重量）的硫酸氢铵水溶液， pH值为4.5-5.8。

    Process for the production of anhydrous oxime from an aqueous solution
    20.
    发明授权
    Process for the production of anhydrous oxime from an aqueous solution 失效
    从水溶液中生产无水肟的方法

    公开(公告)号：US4868334A

    公开(公告)日：1989-09-19

    申请号：US217265

    申请日：1988-07-11

    Applicant: Chempolil T. Mathew ,  Stephen E. Belsky ,  Earl E. McKnight

    Inventor： Chempolil T. Mathew ,  Stephen E. Belsky ,  Earl E. McKnight

    IPC: C07C249/14 ,  C07C251/38

    CPC classification number: C07C249/14

    Abstract: The present invention provides a simple process for the production of anhydrous oxime by the separation of the oxime from an aqueous solution. The process is advantageous because the potential explosive hazards of current processes are eliminated and the oxime is easily separated from the aqueous phase. The process comprises the steps of:(a) vaporizing an aqueous oxime solution;(b) vaporizing a water-immiscible organic solvent for the oxime wherein the boiling point of the solvent is lower than the boiling point of the oxime;(c) combining the vapors together;(d) condensing the collected vapors;(e) removing the organic phase of the condensate from the aqueous phase; and(f) recovering anhydrous oxime from the removed organic phase.The anhydrous oxime produced by the present process if useful in applications such as isocyanate condensation and carbamate formation.

    Abstract translation: 本发明提供了通过从水溶液中分离肟而制备无水肟的简单方法。 该方法是有利的，因为消除了当前方法的潜在爆炸危险，并且肟容易与水相分离。 该方法包括以下步骤：（a）蒸发肟水溶液; （b）蒸发肟的与水不混溶的有机溶剂，其中溶剂的沸点低于肟的沸点; （c）将蒸汽结合在一起; （d）冷凝收集的蒸汽; （e）从水相中除去冷凝物的有机相; 和（f）从去除的有机相中回收无水肟。 通过本方法生产的无水肟可用于异氰酸酯缩合和氨基甲酸酯形成等应用。

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