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39 条记录 (耗时 0.027 秒)

    Process for producing a monoalkenyl aromatic hydrocarbon compound
    31.
    发明授权
    Process for producing a monoalkenyl aromatic hydrocarbon compound 失效
    单链烯基芳烃化合物的制造方法

    公开(公告)号：US5659097A

    公开(公告)日：1997-08-19

    申请号：US371301

    申请日：1995-01-11

    申请人： Norio Fushimi ,  Makoto Takagawa

    发明人： Norio Fushimi ,  Makoto Takagawa

    IPC分类号： B01J23/04 ,  B01J31/00 ,  B01J31/02 ,  C07C2/72 ,  C07C15/40 ,  C07C15/46 ,  C07C5/09

    CPC分类号： C07C15/40 ,  B01J23/04 ,  B01J31/00 ,  C07C2/72 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2521/18 ,  C07C2523/02 ,  C07C2523/04 ,  C07C2527/167 ,  C07C2527/232

    摘要： A process for producing a monoalkenyl aromatic hydrocarbon which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom at the .alpha.-position of a side chain (such as o-xylene) with a conjugated diene having 4 or 5 carbon atoms in the presence of a catalyst slurry prepared by adding an aromatic hydrocarbon compound to a catalyst comprising a alkali metal and an alkali metal compound. In the aforementioned process, it is particularly effective that the catalyst slurry is prepared by adding the aromatic hydrocarbon compound after the aromatic hydrocarbon compound has been deoxygenated and dehydrated by distillation, and the catalyst slurry thus prepared is supplied to the reaction system. According to the aforementioned process, an industrially useful monoalkenyl aromatic hydrocarbon compound, such as a monoalkenylbenzene, can be produced at a high selectivity, in a high yield, and with enhanced safety and stability for a long time.

    摘要翻译： 一种单链烯基芳族烃的制造方法，其包括在侧链（例如邻二甲苯）的α-位上具有至少一个氢原子的芳族烃化合物的侧链与具有4或5个碳原子的共轭二烯链烯基化 在通过将芳族烃化合物加入到包含碱金属和碱金属化合物的催化剂中制备的催化剂浆料存在下进行。 在上述方法中，特别有效的是，通过在芳烃化合物已经脱氧并通过蒸馏脱水之后，通过加入芳族烃化合物制备催化剂浆料，并将由此制备的催化剂浆料供应到反应体系。 根据上述方法，工业上可用的单链烯基芳烃化合物如单烯基苯可以高选择性，高产率，长时间提高安全性和稳定性而制备。

    Process for producing monoalkenyl aromatic hydrocarbon compound
    33.
    发明授权
    Process for producing monoalkenyl aromatic hydrocarbon compound 失效
    单链烯基芳烃化合物的制备方法

    公开(公告)号：US5527977A

    公开(公告)日：1996-06-18

    申请号：US266145

    申请日：1994-06-27

    申请人： Makoto Takagawa ,  Kenichi Nakamura ,  Kinji Kato ,  Akio Hashimoto ,  Takayo Sasaki

    发明人： Makoto Takagawa ,  Kenichi Nakamura ,  Kinji Kato ,  Akio Hashimoto ,  Takayo Sasaki

    IPC分类号： B01J23/04 ,  C07C2/72 ,  C07C15/44

    CPC分类号： C07C15/44 ,  B01J23/04 ,  C07C2/72 ,  C07C2523/02 ,  C07C2523/04

    摘要： Their is disclosed a process for producing a monoalkenyl aromatic hydrocarbon compound (e.g. 5-(o-tolyl)-2-pentene) which comprises the steps of alkenylating a side chain of an aromatic hydrocarbon compound having at lease one hydrogen atom bonded to .alpha.-position of the side chain (e.g. alkylbenzene) by the use of a conjugated diene having 4 to 5 carbon atoms (e.g. 1-3 butadiene) in the presence an alkali metal-based catalyst supported on a carrier; removing at least part of the catalyst from the resultant reaction product by separating the same; inactivating and optionally removing the catalyst contained in the reaction product; and thereafter distilling the reaction produce in liquid form to separate and recover the objective monoalkenyl aromatic hydrocarbon compound. By virtue of using the above specific method, the process can prevent the change in quality and properly of the objective product even during atmospheric distillation, produce the objective product with high purity in high recovery race and operate a distillation column during a long stable period of time.

    摘要翻译： 公开了一种制备单链烯基芳族烃化合物（例如5-（邻甲苯基）-2-戊烯）的方法，该方法包括使具有至少一个氢原子的芳族烃化合物的侧链链烯基化的步骤， 在负载在载体上的碱金属类催化剂存在下，通过使用具有4至5个碳原子的共轭二烯（例如1-3个丁二烯），侧链（例如烷基苯）的位置; 通过分离其从所得反应产物中除去至少一部分催化剂; 灭活和任选地除去反应产物中所含的催化剂; 然后以液体形式蒸馏反应产物以分离和回收目标单链烯基芳族烃化合物。 通过使用上述具体方法，该方法即使在常压蒸馏中也可以防止目标产物的质量变化和适当的改变，在高回收率种族中生产高纯度的目的产物，并在长时间稳定的时间段内操作蒸馏塔 时间。

    Process for producing a monoalkenyl aromatic hydrocarbon compound
    36.
    发明授权
    Process for producing a monoalkenyl aromatic hydrocarbon compound 失效
    单链烯基芳烃化合物的制造方法

    公开(公告)号：US5444172A

    公开(公告)日：1995-08-22

    申请号：US170493

    申请日：1993-12-20

    申请人： Makoto Takagawa ,  Kenji Inamasa ,  Norio Fushimi ,  Akio Hashimoto ,  Takayo Sasaki

    发明人： Makoto Takagawa ,  Kenji Inamasa ,  Norio Fushimi ,  Akio Hashimoto ,  Takayo Sasaki

    IPC分类号： B01J23/04 ,  B01J27/232 ,  C07B61/00 ,  C07C2/72 ,  C07C15/44

    CPC分类号： B01J27/232 ,  B01J23/04 ,  C07C2/72 ,  C07C2521/04 ,  C07C2523/04 ,  C07C2527/232 ,  Y02P20/52

    摘要： There is disclosed a process for producing a monoalkenylbenzene which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom bonded at .alpha.-position of the side chain (such as xylene) with a conjugated diene having 4 or 5 carbon atoms (such as butadiene) in the presence of a catalyst produced by calcining the mixture of a basic potassium compound and alumina and then heat treating the calcined product together with metallic sodium in an atmosphere of an inert gas. According to the aforesaid process, an industrially useful monoalkenylbenzene can be produced in high yield at a low cost with enhanced safety.

    摘要翻译： 公开了一种单链烯基苯的制备方法，该方法包括将具有至少一个在侧链（例如二甲苯）的α位键合的氢原子的芳族烃化合物的侧链与具有4或5个碳原子的共轭二烯链烯基化 （例如丁二烯）在通过煅烧碱性钾化合物和氧化铝的混合物产生的催化剂存在下，然后在惰性气体气氛中将煅烧产物与金属钠一起热处理。 根据上述方法，可以低成本，高安全性地以高产率生产工业上有用的单烯基苯。

    Process for producing 2,6-dimethylnaphthalene
    37.
    发明授权
    Process for producing 2,6-dimethylnaphthalene 失效
    生产2,6-二甲基萘的方法

    公开(公告)号：US5321178A

    公开(公告)日：1994-06-14

    申请号：US6807

    申请日：1993-01-21

    申请人： Kenji Inamasa ,  Norio Fushimi ,  Makoto Takagawa

    发明人： Kenji Inamasa ,  Norio Fushimi ,  Makoto Takagawa

    IPC分类号： B01J23/58 ,  C07B61/00 ,  C07C5/41 ,  C07C15/24 ,  C07C5/00

    CPC分类号： C07C5/417

    摘要： A process for efficiently producing 2,6-dimethylnaphthalene which comprises subjecting 2-methyl-1-(p-tolyl)butene and/or 2-methyl-1-(p-tolyl)butane as the starting raw material to a cyclization dehydrogenation reaction in the presence of a catalyst comprising (a) a palladium component, (b) an alkali or alkaline earth metal compound and (c) aluminum oxide. The process enables the production of highly pure 2,6-dimethylnaphthalene in a high yield at a low cost. The catalyst used in the process affords high safety and stability.

    摘要翻译： 一种有效生产2,6-二甲基萘的方法，包括使2-甲基-1-（对甲苯基）丁烯和/或2-甲基-1-（对甲苯基）丁烷作为起始原料进行环化脱氢反应 在包含（a）钯组分，（b）碱金属或碱土金属化合物和（c）氧化铝的催化剂的存在下。 该方法能够以低成本高产率生产高纯度2,6-二甲基萘。 在该方法中使用的催化剂提供高安全性和稳定性。

    Process for isomerizing hydrocarbons
    39.
    发明授权
    Process for isomerizing hydrocarbons 失效
    异构化烃的方法

    公开(公告)号：US4311867A

    公开(公告)日：1982-01-19

    申请号：US142062

    申请日：1980-04-21

    申请人： Makoto Takagawa ,  Tamotsu Ueno ,  Takehiko Takahashi

    发明人： Makoto Takagawa ,  Tamotsu Ueno ,  Takehiko Takahashi

    IPC分类号： B01J27/00 ,  B01J27/12 ,  C07B61/00 ,  C07C1/00 ,  C07C5/27 ,  C07C9/16 ,  C07C67/00 ,  C07C5/13

    CPC分类号： C07C5/2786

    摘要： Unbranched or less branched paraffins having 6 carbon atoms as essential components are isomerized without side reaction in high yield in the presence of hydrogen fluoride and boron trifluoride as a catalyst while keeping percent isomerization of paraffins having 6 carbon atoms lower than the equilibrium percent isomerization of the paraffins having 6 carbon atoms at a given reaction temperature, or by conducting isomerization at a plurality of stages while keeping a reaction temperature at a given stage lower than that at the preceding stage and keeping percent isomerization of paraffins having 6 carbon atoms at a given stage lower than the equilibrium percent isomerization thereof at the reaction temperature at the stage.

    摘要翻译： 具有6个碳原子作为必要组分的无支链或少支链烷烃在氟化氢和三氟化硼作为催化剂的存在下以高产率异构化而没有副反应，同时保持具有6个碳原子的链烷烃的异构化比其平均百分比异构化低 在给定反应温度下具有6个碳原子的链烷烃，或者通过在多个阶段进行异构化，同时保持在给定阶段的反应温度低于前一阶段的反应温度，并在给定阶段保持具有6个碳原子的链烷烃的异构化百分比 低于在该阶段的反应温度下的平均百分比异构化。