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公开(公告)号：US5948949A
公开(公告)日：1999-09-07
申请号：US777078
申请日：1996-12-30
申请人： Makoto Takagawa , Ryusuke Shigematsu , Kuniaki Ageishi , Ko Kedo
发明人： Makoto Takagawa , Ryusuke Shigematsu , Kuniaki Ageishi , Ko Kedo
IPC分类号： C07C7/14 , C07C15/24 , C07C51/265 , C07C5/22
CPC分类号： C07C7/14 , C07C15/24 , C07C51/265
摘要： A process for producing highly pure 2,6-dimethylnaphthalene in a high yield from a mixture of dimethylnaphthalene isomers in the presence of a solvent, such as an aliphatic or alicyclic saturated hydrocarbon. Highly pure 2,6-dimethylnaphthalene can be produced steadily for a long time by filtering the 2,6-dimethylnaphthalene crystal precipitated by the crystallizing by using a filtration apparatus, such as a rotary vacuum filter, peeling-off the filtered cake from a filter cloth and cleaning the filter cloth with a solvent, at a temperature not lower than a filtration temperature.
摘要翻译： 在溶剂例如脂族或脂环族饱和烃的存在下，从二甲基萘异构体的混合物中以高产率制备高纯度2,6-二甲基萘的方法。 通过使用诸如旋转式真空过滤器的过滤装置过滤由结晶沉淀的2,6-二甲基萘结晶，可以长时间稳定地生产高纯度的2,6-二甲基萘，从过滤器中剥离滤饼 在不低于过滤温度的温度下用溶剂清洗滤布。
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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：US5436381A
公开(公告)日：1995-07-25
申请号：US170495
申请日：1993-12-20
申请人： Makoto Takagawa , Kinji Kato , Norio Fushimi , Ko Kedo
发明人： Makoto Takagawa , Kinji Kato , Norio Fushimi , Ko Kedo
CPC分类号： B01J23/04 , C07C2/72 , C07C2521/04 , C07C2523/04
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 potassium hydroxide and aluminum hydroxide 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）在通过煅烧氢氧化钾和氢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与金属钠一起热处理煅烧产物。 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：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：US06452047B1
公开(公告)日：2002-09-17
申请号：US09577153
申请日：2000-05-24
IPC分类号： C07C5142
CPC分类号： C07C51/487 , C07C51/412 , C07C63/38 , C07C63/333
摘要： Highly pure, less colored aromatic polycarboxylic acids are produced from crude aromatic polycarboxylic acids by simple procedures at low production costs. The crude aromatic polycarboxylic acid is mixed with aliphatic amine or alicyclic amine in the presence of a solvent to precipitate crystals of amine salt of aromatic polycarboxylic acid. The crystals are dissolved in water and decomposed, thereby obtaining the highly pure aromatic polycarboxylic acids.
摘要翻译： 通过简单的程序，以低生产成本从粗芳族多元羧酸生产高纯度，较少着色的芳族多元羧酸。 将粗芳族多元羧酸与脂族胺或脂环族胺在溶剂的存在下混合以沉淀芳族多元羧酸的胺盐结晶。 将晶体溶解在水中并分解，从而获得高纯度的芳族多元羧酸。
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公开(公告)号：US5859294A
公开(公告)日：1999-01-12
申请号：US943718
申请日：1997-10-03
IPC分类号： C07C51/43 , C07C51/487 , C07C51/42
CPC分类号： C07C51/43 , C07C51/487
摘要： A process for producing a high-purity naphthalenedicarboxylic acid having an improved hue or an excellent hue from a crude naphthalenedicarboxylic acid obtained by the oxidation of dialkyl naphthalene, industrially advantageously at high yields, which comprises dissolving a crude naphthalenedicarboxylic acid obtained by the oxidation of dialkyl naphthalene in an aqueous solution containing an aliphatic amine, an alicyclic amine or acetonitrile, removing heavy metal components contained as impurities until the content of the heavy metal components based on the crude naphthalenedicarboxylic acid is 100 ppm or less, and heating the aqueous solution containing a naphthalenedicarboxylic acid amine salt to distill off the amine.
摘要翻译： 一种生产高纯度萘二甲酸的方法，其具有通过二烷基萘氧化得到的粗萘二甲酸改善的色调或优异的色调，在工业上有利地以高产率，其包括将通过二烷基氧化得到的粗萘二羧酸溶解 萘在含有脂肪族胺，脂环族胺或乙腈的水溶液中，除去作为杂质的重金属成分，直到基于粗萘二羧酸的重金属成分的含量为100ppm以下，并加热含有 萘二甲酸胺盐蒸馏除去胺。
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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：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：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：US5504587A
公开(公告)日：1996-04-02
申请号：US465108
申请日：1995-06-05
申请人： Shuichi Morikawa , Masahiko Futatsuka , Satoshi Ishida , Yasunori Miyauchi , Minoru Masuda , Makoto Takagawa
发明人： Shuichi Morikawa , Masahiko Futatsuka , Satoshi Ishida , Yasunori Miyauchi , Minoru Masuda , Makoto Takagawa
IPC分类号： B65H1/06 , B65H3/06 , B65H3/52 , B65H3/56 , H04N1/00 , H04N1/04 , H04N1/10 , H04N1/12 , H04N1/193 , H04N1/203 , E05C3/30 , E05C3/34
CPC分类号： B65H3/5238 , B65H1/06 , B65H3/063 , B65H3/56 , H04N1/0057 , H04N1/00572 , H04N1/0058 , H04N1/00596 , H04N1/00602 , H04N1/0061 , H04N1/00628 , H04N1/04 , H04N1/1215 , H04N1/125 , H04N1/203 , H04N1/2032 , B65H2511/514 , B65H2515/34 , H04N1/0464 , H04N1/1017 , H04N1/12 , H04N1/121 , H04N1/193 , H04N2201/044 , Y10T292/0913 , Y10T292/0917 , Y10T292/0936
摘要： A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b); a slit (58) through which about 10 to 20 sheets of documents can pass is formed between the first roller and a gate plate (57) opposite to this; and the paper fed out therefrom is fed out to a space between the second roller (5b) and a separation pad (7) in contact with this.Also, there is adopted a construction in which the pressing force of a paper conveyance spring is transformed by a slide cam sliding in a direction parallel to the paper feed roller; and the paper width detection sensor is assembled by a fitting construction.
摘要翻译： 供纸辊（5）分为第一辊（5a）和第二辊（5b）; 在第一辊和与其相反的门板（57）之间形成有通过约10至20张纸张的狭缝（58）; 并且从其馈送的纸送到第二辊（5b）和与其接触的分离垫（7）之间的空间。 此外，采用这样的结构，其中通过沿与送纸辊平行的方向滑动的滑动凸轮来变换纸张传送弹簧的按压力; 并且纸宽检测传感器通过装配结构组装。
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