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    • 1. 发明授权
    • Process for producing laurolactam
    • 生产月桂内酰胺的方法
    • US08163899B2
    • 2012-04-24
    • US12526494
    • 2008-02-08
    • Kazuaki IshiharaJunichi KugimotoJoji Kawai
    • Kazuaki IshiharaJunichi KugimotoJoji Kawai
    • C07D201/04
    • C07D201/04C07D225/02Y02P20/582
    • Disclosed is a method for producing laurolactam from cyclododecanone and hydroxylamine in a simple process and with high efficiency. The method comprises the following steps (a) to (e): (a) reacting cyclododecanone with hydroxylamine in an aqueous solution in the presence of an excess amount of cyclododecanone or a solvent to produce cyclododecanone oxime; (b) separating the reaction mixture obtained after the oxime-forming step into an oil and an aqueous phases and collecting a solution of cyclododecanone oxime of the oil phase as; (c) removing dissolved water from the solution of cyclododecanone oxime which is collected as an oily phase in the oil/aqueous phase separation step; (d) producing laurolactam from cyclododecanone oxime by rearrangement reaction using an aromatic-ring containing compound as a rearrangement catalyst; and (e) separating the produced laurolactam from the reaction mixture after the rearrangement step and purifying the laurolactam.
    • 公开了一种以简单的工艺和高效率从环十二酮和羟胺制备月桂内酰胺的方法。 该方法包括以下步骤(a)至(e):(a)在过量的环十二烷酮或溶剂的存在下,使环十二酮与羟胺在水溶液中反应,生成环十二酮肟; (b)将在肟形成步骤后获得的反应混合物分离成油和水相,并收集油相的环十二酮肟溶液; (c)从在油/水相分离步骤中以油相收集的环十二酮肟溶液中除去溶解的水; (d)使用含芳环的化合物作为重排催化剂,通过重排反应从环十二酮肟生产月桂内酰胺; 和(e)在重排步骤之后将所生产的月桂内酰胺与反应混合物分离并纯化十二内酰胺。
    • 5. 发明授权
    • Running speed detector
    • 运行速度检测器
    • US4667297A
    • 1987-05-19
    • US683583
    • 1984-12-19
    • Joji Kawai
    • Joji Kawai
    • G01P3/489G01P3/42G01P3/48G06F15/20G06G7/00
    • G01P3/489
    • The present invention relates to a running speed detector comprising:a pulse encoder which generates pulses of a frequency proportional to the running speed of a rotary member;pulse period counting device for counting the periods of pulses having said frequency relying upon clock signals;memory for storing ounted values of periods counted by said pulse period counting means; andand a calculating device which receives pulses having said frequency, which calculates the sum of n latest counted values that have been counted already after the arrival of each of said pulses or after the arrival of a predetermined number of pulses, and which calculates the running speed that varies in proportion to a ratio of the number n of counted values of periods to said sum of counted values of periods.
    • 运行速度检测器技术领域本发明涉及一种运行速度检测器,包括:脉冲编码器,其生成与旋转部件的运行速度成比例的频率的脉冲; 脉冲周期计数装置,用于根据时钟信号计数具有所述频率的脉冲的周期; 用于存储由所述脉冲周期计数装置计数的周期值的存储器; 以及计算装置,其接收具有所述频率的脉冲,其计算在每个所述脉冲到达之后或在预定脉冲数到达之后已经计数的n个最近计数值的和,并且计算运行 速度与周期的计数值的数量n与周期的计数值的总和的比率成比例地变化。
    • 7. 发明申请
    • PROCESS FOR PRODUCING LAUROLACTAM
    • 生产乳酸菌的方法
    • US20100267944A1
    • 2010-10-21
    • US12744675
    • 2008-11-19
    • Junichi KugimotoJoji KawaiHideo ShimomuraRyouta YasumatsuNobuhiro II
    • Junichi KugimotoJoji KawaiHideo ShimomuraRyouta YasumatsuNobuhiro II
    • C07D225/02
    • C07D201/04C07D225/02Y02P20/582
    • Provided is a process for efficiently producing laurolactam by simple steps from cyclododecanone and hydroxylamine. This production process comprises the steps of: (a) reacting cyclododecanone with hydroxylamine in an aqueous solution in the presence of an oxime-formation solvent to produce cyclododecanone oxime; (b) separating the reaction mixture obtained after the oxime-forming step into an oil and an aqueous phases and collecting a solution of cyclododecanone oxime of the oil phase; (c) removing a part or all of the oxime-formation solvent and dissolved water from the solution of cyclododecanone oxime which is collected as an oil phase in the oil/aqueous phase separation step, whereby preparing a solution containing a rearrangement solvent to be used in a rearrangement reaction in a later step and the cyclododecanone oxime; (d) producing laurolactam from cyclododecanone oxime by rearrangement reaction using an aromatic-ring containing compound as a rearrangement catalyst; and (e) separating and removing the rearrangement solvent and the rearrangement catalyst from the reaction mixture after the rearrangement step, and purifying the laurolactam.
    • 提供一种通过简单的步骤从环十二酮和羟胺有效地生产十二内酰胺的方法。 该制备方法包括以下步骤:(a)在肟形成溶剂存在下,使环十二酮与羟胺在水溶液中反应,生成环十二酮肟; (b)将在肟形成步骤后获得的反应混合物分离成油相和水相,并收集油相的环十二烷酮肟溶液; (c)从油/水相分离步骤中以油相收集的环十二酮肟溶液中除去部分或全部肟形成溶剂和溶解的水,由此制备含有使用的重排溶剂的溶液 在后续步骤中的重排反应和环十二酮肟; (d)使用含芳环的化合物作为重排催化剂,通过重排反应从环十二酮肟生产月桂内酰胺; 和(e)在重排步骤之后从反应混合物中分离和除去重排溶剂和重排催化剂,并纯化月桂内酰胺。
    • 8. 发明申请
    • METHOD FOR PRODUCING AMIDE COMPOUND
    • 生产酰胺化合物的方法
    • US20130005960A1
    • 2013-01-03
    • US13635092
    • 2011-03-15
    • Junichi KugimotoJoji KawaiKazuo YamatoMasahide OkadaTsunemi SugimotoHiroshi Matsumoto
    • Junichi KugimotoJoji KawaiKazuo YamatoMasahide OkadaTsunemi SugimotoHiroshi Matsumoto
    • C07D225/02
    • C07D201/06C07D201/04C07D225/02
    • The present invention relates to a method for producing a high purity, high quality amide compound, particularly, lactam. A first embodiment of the present invention is characterized in that an amount of each of a halide, an aldehyde compound, an alcohol compound and a nitrile compound contained in a solution recycled into an oxime-forming step is controlled to an amount of 0.4 mol % or less based on the ketone as a starting material. A second embodiment of the present invention is characterized in that one or more compounds selected from the group consisting of a ketone, an oxime and an amide compound are purified by hydrogenation and/or crystallization for eliminating impurities containing a double bond. A third embodiment of the present invention is characterized in that a content of impurities having a cyclic bridge structure is controlled by using a cycloalkanone purified by recrystallization.
    • 本发明涉及一种生产高纯度,优质酰胺化合物,特别是内酰胺的方法。 本发明的第一实施方案的特征在于,将再循环到肟形成步骤的溶液中所含的卤化物,醛化合物,醇化合物和腈化合物中的每一种的量控制为0.4mol% 基于酮作为原料。 本发明的第二个实施方案的特征在于,通过氢化和/或结晶纯化一种或多种选自酮,肟和酰胺化合物的化合物,以消除含有双键的杂质。 本发明的第三实施方案的特征在于通过使用通过重结晶纯化的环烷酮来控制具有环状桥结构的杂质的含量。