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公开(公告)号：US5495060A
公开(公告)日：1996-02-27
申请号：US214970
申请日：1994-03-17
CPC分类号： C07C5/2708 , C07C5/2737 , C07C2529/18
摘要： There is disclosed a method for isomerizing dimethylnaphthalene (DMN) in liquid phase under atmospheric pressure by using a catalyst comprising hydrogen-form mordenite which has a molar ratio of silica to alumina (SiO.sub.2 /Al.sub.2 O.sub.3 ratio) of at least 100 and is molded by incorporating alumina as the molding aid therein. According to the above method, the objective 2,6-DMN minimized in the contents of impurities can stably be produced in high selectivity and high yield under mild reaction conditions for a long period of time, while side reactions and deterioration of the catalyst are suppressed to a minimum.
摘要翻译： 公开了一种通过使用包含二氧化硅与氧化铝的摩尔比（SiO 2 / Al 2 O 3比）至少为100的氢型丝光沸石的催化剂在常压下在液相中异构化二甲基萘（DMN）的方法，并通过掺入 氧化铝作为其中的助剂。 根据上述方法，在温和反应条件下长时间稳定地以高选择性和高收率产生杂质含量最小化的目的物2,6-DMN，同时抑制副反应和劣化 至少。
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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：US6072098A
公开(公告)日：2000-06-06
申请号：US777077
申请日：1996-12-30
CPC分类号： C07C7/14 , C07C15/24 , C07C5/2737 , C07C51/265 , C07C7/005 , C07C2529/18
摘要： There are disclosed an industrially advantageous process for efficiently producing highly pure 2,6-dimethylnaphthalene (DMN) in high yield from a mixture of DMN by carrying out in turn, the steps of isomerizing a mixture of DMN in the presence of a catalyst; crystallizing the isomerization reaction product in the presence of a solvent (e.g. an aliphatic or alicyclic saturated hydrocarbon) to precipitate 2,6-DMN crystal; isolating and recovering the 2,6-DMN thus precipitated; and distilling the mother liquor formed after the isolation of the crystal to obtain DMN fraction by removing the components having a higher boiling point than DMN and the components having a lower boiling point than DMN, while at least part of the DMN fraction is returned to the isomerization step and circulated through the process; a process for producing a 2,6-naphthalenedicarboxylic acid by subjecting the 2,6-DMN obtained by the above process to liquid-phase oxidation; and a process for producing 2,6-naphthalenedicarboxylic acid ester by esterifying 2,6-naphthalenedicarboxylic acid thus produced.
摘要翻译： 公开了一种工业上有利的方法，通过在催化剂存在下进行DMN混合物的异构化步骤，从DMN的混合物中高效地生产高纯度的2,6-二甲基萘（DMN）。 在溶剂（例如脂族或脂环族饱和烃）存在下使异构化反应产物结晶以沉淀2,6-DMN晶体; 分离和回收由此沉淀的2,6-DMN; 并蒸馏出分离晶体后形成的母液，通过除去沸点比DMN高的组分和沸点低于DMN的组分，得到DMN馏分，而至少部分DMN馏分返回到 异构化步骤并通过该过程循环; 通过使通过上述方法获得的2,6-DMN进行液相氧化来制备2,6-萘二甲酸的方法; 以及通过酯化如此制备的2,6-萘二羧酸生产2,6-萘二甲酸酯的方法。
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公开(公告)号：US5599981A
公开(公告)日：1997-02-04
申请号：US590598
申请日：1996-01-24
申请人： Norio Fushimi , Kenichi Nakamura , Makoto Takagawa
发明人： Norio Fushimi , Kenichi Nakamura , Makoto Takagawa
摘要： Provided is a process for producing alkylbenzoyl chloride which comprises reacting alkylbenzaldehyde with chlorine at a temperature of -10.degree. to 80.degree. C. under a pressure of 5 kg/cm.sup.2 or below in a liquid phase, whereby alkylbenzoyl chloride can be produced in a high yield and at a low price.
摘要翻译： 本发明提供烷基苯甲酰氯的制造方法，其特征在于，在液相中，在压力为5kg / cm 2以下的压力下，在-10℃〜80℃的温度下使烷基苯甲醛与氯反应，由此能够高效地生成烷基苯甲酰氯 收益率低廉。
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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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公开(公告)号：US5446226A
公开(公告)日：1995-08-29
申请号：US156402
申请日：1993-11-19
申请人： Shinji Ozawa , Makoto Takagawa , Takayasu Fujimori
发明人： Shinji Ozawa , Makoto Takagawa , Takayasu Fujimori
CPC分类号： C07C5/417
摘要： A process for efficiently producing dimethylnaphthalene by a single-step reaction which comprises cyclizing dehydrogenating 5-tolyl-penta-2-ene in the presence of a catalyst comprising in combination (a) a solid acid such as crystalline aluminosilicate, silica-alumina or alumina; (b) a noble metal such as palladium and platinum; and a carrier such as carbon, silicon oxide, titanium oxide and zirconium oxide. The process results in simplification of production, effective utilization of reaction heat and rationalization of the heat balance.
摘要翻译： 一种通过一步反应有效生产二甲基萘的方法，该方法包括在催化剂存在下环化脱氢5-甲苯基 - 戊-2-烯，所述催化剂包括（a）固体酸如结晶硅铝酸盐，二氧化硅 - 氧化铝或氧化铝 ; （b）贵金属如钯和铂; 和碳，氧化硅，氧化钛和氧化锆等载体。 该过程导致生产简化，反应热的有效利用和热平衡的合理化。
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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：US5254769A
公开(公告)日：1993-10-19
申请号：US851827
申请日：1992-03-16
申请人： Makoto Takagawa , Ken Yamagishi , Kazuo Nagagata
发明人： Makoto Takagawa , Ken Yamagishi , Kazuo Nagagata
CPC分类号： C07C5/2748
摘要： Dimethylnaphthalenes are isomerized into 2,6-dimethylnaphthalene by utilizing hydrogen fluoride as a catalyst and straight chain saturated aliphatic hydrocarbons having carbon atoms in the range from 5 to 12 as the solvent. Isomerization to other undesirable isomers such as 2,7-dimethylnaphthalene and side reactions such as disproportionation are suppressed and a very high degree of the isomerization to 2,6-DMN can be attained.
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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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