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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。
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公开(公告)号：US5367098A
公开(公告)日：1994-11-22
申请号：US47812
申请日：1993-04-15
申请人： Norio Fushimi , Ko Kedo , Kenji Inamasa , Makoto Takagawa
发明人： Norio Fushimi , Ko Kedo , Kenji Inamasa , Makoto Takagawa
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
摘要： A process for producing a monoalkenyl aromatic hydrocarbon compound which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom bonded at an .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 comprising a mixture obtained by heat treating metallic sodium together with a mixture of an aluminum oxide and a potassium compound in an inert gas atmosphere. The process produces a commercially useful monoalkenyl aromatic hydrocarbon compounds in a high yields and at a low cost with enhanced safety.
摘要翻译： 一种单链烯基芳族烃化合物的制造方法，其特征在于，将具有至少一个在侧链的α位键合的氢原子（例如二甲苯）的芳香族烃化合物的侧链与具有4或5个碳原子的共轭二烯 在包含通过在惰性气体气氛中将金属钠与氧化铝和钾化合物的混合物一起热处理获得的混合物的催化剂存在下的原子（例如丁二烯）。 该方法以高产率和低成本产生商业上可用的单链烯基芳族烃化合物，具有增强的安全性。
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公开(公告)号：US5344806A
公开(公告)日：1994-09-06
申请号：US011216
申请日：1993-01-29
申请人： Norio Fushimi , Kenji Inamasa , Makoto Takagawa
发明人： Norio Fushimi , Kenji Inamasa , Makoto Takagawa
CPC分类号： B01J23/04 , C07C2/72 , C07C2521/10 , C07C2523/02 , C07C2523/04
摘要： There is disclosed a process for producing a monoalkenyl aromatic hydrocarbon compound 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 comprising the mixture obtained by heat treating metallic sodium together with an alkaline earth metal oxide containing a potassium compound in the atmosphere of an inert gas. According to the aforesaid process, a monoalkenyl aromatic hydrocarbon compound such as industrially useful monoalkenylbenzene can be produced in high yield at a low cost with enhanced safety from a specific aromatic hydrocarbon compound and a specific conjugated diene compound.
摘要翻译： 公开了一种单烯基芳族烃化合物的制造方法，该方法包括使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 在包含通过在惰性气体气氛中将金属钠与含有钾化合物的碱土金属氧化物一起热处理的混合物的催化剂存在下，将5个碳原子（例如丁二烯）。 根据上述方法，可以以低成本高产率生产工业上可用的单链烯基单链烯基芳烃化合物，从特定的芳族烃化合物和特定的共轭二烯化合物的安全性提高。
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公开(公告)号：US5276230A
公开(公告)日：1994-01-04
申请号：US944363
申请日：1992-09-14
申请人： Kenji Inamasa , Norio Fushimi , Makoto Takagawa
发明人： Kenji Inamasa , Norio Fushimi , Makoto Takagawa
摘要： There is disclosed a process for efficiently producing 2,6-dimethylnaphthalene used for the production of polyethylene naphthalate which comprises subjecting 2-methyl-1-(p-tolyl)butene and/or 2-methyl-1-(p-tolyl)butane as a starting raw material to cyclization dehydrogenation reaction by the use of a catalyst comprising a platinum component and at least one component selected from the group consisting of alkali metals and alkaline earth metals each being supported on aluminum oxide. The above process enables the production of the objective compound in a high yield at a low cost by using the catalyst having high safety and stability from the widely available starting material, thereby enhancing the industrial significance of the process.
摘要翻译： 公开了一种有效生产用于生产聚萘二甲酸乙二醇酯的2,6-二甲基萘的方法，该方法包括使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，通过使用包含铂成分和至少一种选自碱金属和碱土金属的组分的催化剂进行环化脱氢反应，所述碱金属和碱土金属各自负载在氧化铝上。 上述方法能够通过使用来自广泛可得的原料的高安全性和稳定性的催化剂以低成本高产率生产目标化合物，从而提高了该方法的工业意义。
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公开(公告)号：US5334794A
公开(公告)日：1994-08-02
申请号：US47811
申请日：1993-04-15
申请人： Norio Fushimi , Ko Kedo , Kenji Inamasa , Makoto Takagawa
发明人： Norio Fushimi , Ko Kedo , Kenji Inamasa , Makoto Takagawa
CPC分类号： B01J23/04 , C07C2/72 , C07C2521/06 , C07C2523/04
摘要： A process for producing a monoalkenyl aromatic hydrocarbon compound which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom bonded at an .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 comprising a mixture obtained by heat treating metallic sodium together with a mixture of a zirconium oxide and a potassium compound in an inert gas atmosphere. An industrially useful monoalkenyl aromatic hydrocarbon compound is produced in a high yield at a low cost with enhanced safety from a specific aromatic hydrocarbon compound and a specific conjugated diene compound.
摘要翻译： 一种单链烯基芳族烃化合物的制造方法，其特征在于，将具有至少一个在侧链的α位键合的氢原子（例如二甲苯）的芳香族烃化合物的侧链与具有4或5个碳原子的共轭二烯 在包含通过在惰性气体气氛中将金属钠与氧化锆和钾化合物的混合物一起热处理获得的混合物的催化剂存在下的原子（例如丁二烯）。 以低成本高产率生产工业上有用的单链烯基芳烃化合物，从特定芳烃化合物和特定共轭二烯化合物的安全性提高。
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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
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。
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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
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。
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公开(公告)号：US5396007A
公开(公告)日：1995-03-07
申请号：US86506
申请日：1993-07-01
申请人： Yoichi Kyuko , Shinji Ozawa , Makoto Takagawa , Kenji Inamasa
发明人： Yoichi Kyuko , Shinji Ozawa , Makoto Takagawa , Kenji Inamasa
CPC分类号： C07C5/367
摘要： A process for producing dimethylnaphthalene by the dehydrogenation of dimethyl-tetrahydronaphthalene which comprises carrying out the dehydrogenation reaction in a gaseous state at a temperature of 200.degree. to 350.degree. C. in the presence of a diluting medium and by the use of a platinum and/or palladium catalyst supported on an activated carbon carrier. The process is capable of producing industrially useful dimethylnaphthalene with a high yield and a high selectivity and minimized side reactions, over a long stabilized period.
摘要翻译： 通过二氢四氢萘的脱氢生产二甲基萘的方法，包括在稀释介质存在下，在200-350℃的温度下以气态进行脱氢反应，并通过使用铂和/ 或负载在活性炭载体上的钯催化剂。 该方法能够在长期稳定的时间内以高产率和高选择性和最小化的副反应生产工业上有用的二甲基萘。
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公开(公告)号：US5068480A
公开(公告)日：1991-11-26
申请号：US621260
申请日：1990-12-03
申请人： Makoto Takagawa , Ken Yamagishi , Jyun Yoshihara , Kenji Inamasa , Kumiko Watabe
发明人： Makoto Takagawa , Ken Yamagishi , Jyun Yoshihara , Kenji Inamasa , Kumiko Watabe
CPC分类号： C07C5/412
摘要： A process for producing 2,6-dimethylnaphthalene, which comprises subjecting 2-methyl-1-(p-tolyl)-butene, 2-methyl-1-(p-tolyl)-butane or a mixture of these to cyclization and dehydrogenation in the presence of a catalyst comprising lead oxide and/or indium oxide and aluminum oxide.
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公开(公告)号：US5481055A
公开(公告)日：1996-01-02
申请号：US406642
申请日：1995-03-20
CPC分类号： C07C5/2737 , C07C2529/18
摘要： A method for isomerizing dimethylnaphthalene (DMN) in the gaseous phase in the presence of a solvent comprising an aromatic hydrocarbon having a boiling point of at most 150.degree. C., e.g., benzene, under atmospheric pressure by using a catalyst comprising a hydrogen-form of mordenite. According to the method, the objective 2,6-DMN can be produced with a minimal content of impurities and the 2,6-DMN can be stably produced in high selectivity and high yield under mild reaction conditions for a long period of time, while suppressing side reactions.
摘要翻译： 在包含沸点至多为150℃的芳族烃（例如苯）的溶剂的存在下，在大气压下使用包含氢形式的催化剂在气相中使二甲基萘（DMN）异构化的方法 的丝光沸石。 根据该方法，可以以最小含量的杂质制备目的物2,6-DMN，并且在温和的反应条件下长时间稳定地以高选择性和高收率稳定地制备2,6-DMN，而 抑制副反应。
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