公开(公告)号：US6018077A

公开(公告)日：2000-01-25

申请号：US48494

申请日：1998-03-26

申请人： Fumio Ohkoshi ,  Hiroshi Ogawa ,  Kazuo Tanaka ,  Masato Inari ,  Hiroshi Machida

发明人： Fumio Ohkoshi ,  Hiroshi Ogawa ,  Kazuo Tanaka ,  Masato Inari ,  Hiroshi Machida

IPC分类号： C07C51/265 ,  C07C51/16

CPC分类号： C07C51/265

摘要： A process for producing 2,6-naphthalenedicarboxylic acid comprising oxidizing 2,6-dimethylnaphthalene with a gas containing oxygen in a solvent comprising a lower aliphatic carboxylic acid in the presence of a catalyst comprising cobalt, manganese, and bromine, wherein the total amount of cobalt and manganese in the catalyst is 50 to 300 mg atom per 1 g mol of 2,6-dimethylnaphthalene, a ratio by g atom of manganese to cobalt in the catalyst is 20:1 to 4:1, and the oxidation is conducted at a temperature of 200 to 250.degree. C.; and a process as described above, wherein a mother liquor which is obtained from a slurry of a product of the oxidation via a step of solid-liquid separation is recyled to a step of oxidation after heat treatment at a temperature of 150.degree. C. or higher. In accordance with the processes, accumulation of substances which affect the oxidation adversely is prevented. Moreover, a large fraction of a mother liquor of oxidation can be recycled without decrease in the yield of the reaction, and the catalyst components and the solvent components in the mother liquor of oxidation can be utilized efficiently.

摘要翻译： 一种2,6-萘二甲酸的制造方法，其特征在于，在包含钴，锰，溴的催化剂的存在下，在含有低级脂肪族羧酸的溶剂中，在含有氧的气体中，使2,6-二甲基萘氧化， 催化剂中的钴和锰在每1克摩尔2,6-二甲基萘中为50〜300mg原子，催化剂中锰与钴的原子比为20：1〜4：1，氧化反应在 温度为200〜250℃。 和如上所述的方法，其中将通过固液分离步骤的氧化产物的浆料获得的母液在150℃的温度下再热处理至氧化步骤，或 更高。 根据这些方法，可以防止影响氧化的物质的积累。 此外，大部分的氧化母液可以循环使用而不会降低反应的产率，并且可有效地利用氧化母液中的催化剂组分和溶剂组分。

公开(公告)号：US5068410A

公开(公告)日：1991-11-26

申请号：US613005

申请日：1990-11-15

申请人： Toru Tanaka ,  Masato Inari

发明人： Toru Tanaka ,  Masato Inari

IPC分类号： B01J31/04 ,  C07B61/00 ,  C07C51/09 ,  C07C63/38

CPC分类号： C07C51/09

摘要： A process for producing highly pure 2,6-napthalene dicarboxylic acid, characterized by hydrolyzing 2,6-dimethyl naphthalene dicarboxylate more than 99% pure in an aqueous solution by using an aromatic poly-carboxylic acid as a catalyst is disclosed.

公开(公告)号：US08247605B2

公开(公告)日：2012-08-21

申请号：US12374835

申请日：2007-07-19

申请人： Masato Inari ,  Fumiya Zaima

发明人： Masato Inari ,  Fumiya Zaima

IPC分类号： C07C51/42

CPC分类号： C07C51/42 ,  C07C51/43 ,  C07C63/24

摘要： A method of replacing a first dispersion medium in a starting slurry composed of the first dispersion medium and isophthalic acid crystals with a second dispersion medium. The starting slurry is tangentially fed to a vertically extending cylindrical portion of a cyclone-shaped nozzle disposed at an upper portion of a replacement tank of a dispersion medium replacement apparatus, from a tangential direction of the cylindrical portion. The fed starting slurry moves circularly along an inner wall of the cylindrical portion. The slurry circularly moving is then discharged from an opening which is disposed at a vertically lower end of the cylindrical portion and dispersed in a second dispersion medium which is fed from a lower portion of the replacement tank. The replaced slurry composed of isophthalic acid crystals and the second dispersion medium is mainly discharged from the lower portion of the replacement tank, and the first dispersion medium is mainly withdrawn from the upper portion of the replacement tank.

摘要翻译： 将由第一分散介质和间苯二甲酸晶体构成的起始浆料中的第一分散介质用第二分散介质置换的方法。 将起始浆料切向地供给到设置在分散介质置换装置的更换罐的上部处的旋转形喷嘴的垂直延伸的圆柱形部分，该圆筒部分从圆柱形部分的切线方向。 进料的起始浆料沿圆柱形部分的内壁圆周移动。 然后，从设置在圆筒部的垂直下端的开口排出循环移动的浆料，并分散在从更换槽的下部供给的第二分散介质中。 由间苯二甲酸晶体构成的替代浆料和第二分散介质主要从更换槽的下部排出，第一分散介质主要从更换罐的上部排出。

公开(公告)号：US20100012887A1

公开(公告)日：2010-01-21

申请号：US12304415

申请日：2007-06-08

申请人： Masato Inari ,  Fumiya Zaima

发明人： Masato Inari ,  Fumiya Zaima

IPC分类号： C09K3/00

CPC分类号： C07C51/43 ,  B01D9/004 ,  B01D9/0045 ,  C07C51/47 ,  C07C63/26

摘要： A method of replacing a first dispersion medium in a starting slurry composed of the first dispersion medium and a terephthalic acid crystal with a second dispersion medium. The starting slurry is tangentially fed to a vertically extending cylindrical portion of a cyclone-shaped nozzle disposed at an upper portion of a replacement tank of a dispersion medium replacement apparatus, from a tangential direction of the cylindrical portion. The fed starting slurry moves circularly along an inner wall of the cylindrical portion. The slurry circularly moving is then discharged from an opening which is disposed at a vertically lower end of the cylindrical portion and dispersed in a second dispersion medium which is fed from a lower portion of the replacement tank. The replaced slurry composed of the terephthalic acid crystal and the second dispersion medium is mainly discharged from the lower portion of the replacement tank, and the first dispersion medium is mainly withdrawn from the upper portion of the replacement tank.

摘要翻译： 用第二分散介质代替由第一分散介质和对苯二甲酸晶体组成的起始浆料中的第一分散介质的方法。 将起始浆料切向地供给到设置在分散介质置换装置的更换罐的上部处的旋转形喷嘴的垂直延伸的圆柱形部分，该圆筒部分从圆柱形部分的切线方向。 进料的起始浆料沿圆柱形部分的内壁圆周移动。 然后，从设置在圆筒部的垂直下端的开口排出循环移动的浆料，并分散在从更换槽的下部供给的第二分散介质中。 由对苯二甲酸晶体和第二分散介质构成的替换浆料主要从更换槽的下部排出，第一分散介质主要从更换槽的上部排出。

公开(公告)号：US20100004484A1

公开(公告)日：2010-01-07

申请号：US12374835

申请日：2007-07-19

申请人： Masato Inari ,  Fumiya Zaima

发明人： Masato Inari ,  Fumiya Zaima

IPC分类号： C07C51/43

CPC分类号： C07C51/42 ,  C07C51/43 ,  C07C63/24

摘要： A method of replacing a first dispersion medium in a starting slurry composed of the first dispersion medium and isophthalic acid crystals with a second dispersion medium. The starting slurry is tangentially fed to a vertically extending cylindrical portion of a cyclone-shaped nozzle disposed at an upper portion of a replacement tank of a dispersion medium replacement apparatus, from a tangential direction of the cylindrical portion. The fed starting slurry moves circularly along an inner wall of the cylindrical portion. The slurry circularly moving is then discharged from an opening which is disposed at a vertically lower end of the cylindrical portion and dispersed in a second dispersion medium which is fed from a lower portion of the replacement tank. The replaced slurry composed of isophthalic acid crystals and the second dispersion medium is mainly discharged from the lower portion of the replacement tank, and the first dispersion medium is mainly withdrawn from the upper portion of the replacement tank.

摘要翻译： 将由第一分散介质和间苯二甲酸晶体构成的起始浆料中的第一分散介质用第二分散介质置换的方法。 将起始浆料切向地供给到设置在分散介质置换装置的更换罐的上部处的旋转形喷嘴的垂直延伸的圆柱形部分，该圆筒部分从圆柱形部分的切线方向。 进料的起始浆料沿圆柱形部分的内壁圆周移动。 然后，从设置在圆筒部的垂直下端的开口排出循环移动的浆料，并分散在从更换槽的下部供给的第二分散介质中。 由间苯二甲酸晶体构成的替代浆料和第二分散介质主要从更换槽的下部排出，第一分散介质主要从更换罐的上部排出。

公开(公告)号：US07569707B2

公开(公告)日：2009-08-04

申请号：US11490126

申请日：2006-07-21

申请人： Hiroshi Ogawa ,  Atsushi Okoshi ,  Masashi Yabuno ,  Masato Inari

发明人： Hiroshi Ogawa ,  Atsushi Okoshi ,  Masashi Yabuno ,  Masato Inari

IPC分类号： C07D493/04

CPC分类号： C07C51/56 ,  C07C63/313

摘要： A method of producing pyromellitic dianhydride. The method includes a step of heating a crude pyromellitic acid in the absence of acetic anhydride to convert a part of pyromellitic acid to pyromellitic anhydride, and a subsequent step of heating the resultant mixture in the presence of acetic anhydride to complete the anhydrization of pyromellitic acid. The pyromellitic dianhydride by the method contains little pyromellitic monoanhydride and other monoanhydrides derived from impurities and is less discolored. The pyromellitic dianhydride has particle properties not causing plugging, etc. during its transportation, storage and use.

摘要翻译： 制备均苯四酸二酐的方法。 该方法包括在不存在乙酸酐的情况下加热粗均苯四酸酸以将一部分均苯四酸转化为均苯四酸酐的步骤，随后在乙酸酐存在下加热得到的混合物以完成均苯四酸酸的脱水 。 通过该方法，均苯四酸二酐含有少量均苯四酸单酸酐和衍生自杂质的其它一元酸，并且较少变色。 均苯四酸二酐在其运输，储存和使用期间具有不引起堵塞等的颗粒性质。

公开(公告)号：US20070021622A1

公开(公告)日：2007-01-25

申请号：US11490126

申请日：2006-07-21

申请人： Hiroshi Ogawa ,  Atsushi Okoshi ,  Masashi Yabuno ,  Masato Inari

发明人： Hiroshi Ogawa ,  Atsushi Okoshi ,  Masashi Yabuno ,  Masato Inari

IPC分类号： C07D307/77

CPC分类号： C07C51/56 ,  C07C63/313

摘要： A method of producing pyromellitic dianhydride. The method includes a step of heating a crude pyromellitic acid in the absence of acetic anhydride to convert a part of pyromellitic acid to pyromellitic anhydride, and a subsequent step of heating the resultant mixture in the presence of acetic anhydride to complete the anhydrization of pyromellitic acid. The pyromellitic dianhydride by the method contains little pyromellitic monoanhydride and other monoanhydrides derived from impurities and is less discolored. The pyromellitic dianhydride has particle properties not causing plugging, etc. during its transportation, storage and use.

摘要翻译： 制备均苯四酸二酐的方法。 该方法包括在不存在乙酸酐的情况下加热粗均苯四酸酸以将一部分均苯四酸转化为均苯四酸酐的步骤，随后在乙酸酐存在下加热得到的混合物以完成均苯四酸酸的脱水 。 通过该方法，均苯四酸二酐含有少量均苯四酸单酸酐和衍生自杂质的其它一元酸，并且较少变色。 均苯四酸二酐在其运输，储存和使用期间具有不引起堵塞等的颗粒性质。

公开(公告)号：US07071362B2

公开(公告)日：2006-07-04

申请号：US10924811

申请日：2004-08-25

申请人： Tomohiro Sugawara ,  Fumiya Zaima ,  Atsushi Okoshi ,  Kinji Kato ,  Masato Inari

发明人： Tomohiro Sugawara ,  Fumiya Zaima ,  Atsushi Okoshi ,  Kinji Kato ,  Masato Inari

IPC分类号： C07C47/28 ,  C07C47/32

CPC分类号： C07D317/12 ,  C07C45/59 ,  Y02P20/55 ,  C07C47/32

摘要： In the production of an alicyclic aldehyde, a starting aromatic aldehyde is converted into an aromatic acetal for protecting the formyl group. The aromatic ring of the aromatic acetal is then hydrogenated to convert the aromatic acetal into an alicyclic acetal, which is then hydrolyzed to cleave the acetal protecting group to obtain the aimed alicyclic aldehyde.

摘要翻译： 在制备脂环醛时，将起始芳族醛转化成芳族缩醛以保护甲酰基。 然后将芳族缩醛的芳环加氢以将芳族缩醛转化为脂环族缩醛，然后将其水解以切割缩醛保护基以获得目标脂环族醛。

公开(公告)号：US4886906A

公开(公告)日：1989-12-12

申请号：US294297

申请日：1989-01-06

申请人： Toru Tanaka ,  Masato Inari

发明人： Toru Tanaka ,  Masato Inari

IPC分类号： B01J27/08 ,  B01J31/30 ,  C07B61/00 ,  C07C51/00 ,  C07C51/255 ,  C07C51/265 ,  C07C63/38 ,  C07C67/00

CPC分类号： C07C51/265

摘要： A process for producing 2,6-naphthalene dicarboxylic acid which comprises oxidizing a 2-alkyl-6-acyl naphthalene with molecular oxygen-containing gas in the presence of a catalyst containing cobalt, manganese, bromine and at least one metal selected from the group consisting of iron, copper and mixtures thereof in an acetic acid solvent is disclosed.

公开(公告)号：US08242304B2

公开(公告)日：2012-08-14

申请号：US13048537

申请日：2011-03-15

申请人： Fumiya Zaima ,  Nobuo Namiki ,  Hideaki Fujita ,  Masato Inari

发明人： Fumiya Zaima ,  Nobuo Namiki ,  Hideaki Fujita ,  Masato Inari

IPC分类号： C07C51/16 ,  C07C51/255

CPC分类号： C07C51/47 ,  C07C63/24

摘要： A method for producing isophthalic acid, comprising: subjecting a m-phenylene compound and a molecular-oxygen-containing gas to liquid-phase oxidation reaction in the presence of a catalyst comprising a heavy metal compound and a bromine compound, and hydrous acetic acid having a water content of 1 to 15 mass %, to thereby yield a slurry; regulating the temperature of the slurry to 35 to 140° C., to thereby precipitate isophthalic acid; removing the isophthalic acid through solid-liquid separation, to thereby recover a mother liquor; and recovering the catalyst from the mother liquor by following steps (1) to (4) as described.

摘要翻译： 一种间苯二甲酸的制造方法，其特征在于，在含有重金属化合物和溴化合物的催化剂的存在下，使间亚苯基化合物和含分子氧气体进行液相氧化反应， 水含量为1〜15质量％，由此得到浆料; 将浆料的温度调节至35〜140℃，由此沉淀间苯二甲酸; 通过固液分离除去间苯二甲酸，从而回收母液; 并按照如上所述的步骤（1）至（4）从母液中回收催化剂。