公开(公告)号：US06472540B1

公开(公告)日：2002-10-29

申请号：US09617547

申请日：2000-07-14

申请人： Kazuo Tanaka ,  Atsushi Okoshi ,  Hiroshi Ogawa

发明人： Kazuo Tanaka ,  Atsushi Okoshi ,  Hiroshi Ogawa

IPC分类号： C07D31304

CPC分类号： C07D313/04

摘要： What is disclosed is a process for producing &egr;-caprolactone which comprises removing impurities by distillation from a reaction mixture obtained by co-oxidation of cyclohexanone and aldehyde, wherein &egr;-caprolactone separated from a purifying column is contacted with oxygen containing gas in the presence of cobalt. High boiling point components are removed to give an acid value of lower than 0.15 mgKOH/g. Thereby, a high quality &egr;-caprolactone providing improved polymer appearance is produced advantageously on an industrial scale without repeated purifying distillations or without using expensive stabilizer or adsorbent for the improvement of color.

摘要翻译： 公开的是一种生产ε-己内酯的方法，其包括通过环己酮和醛的共氧化反应获得的反应混合物中的杂质除去杂质，其中在纯化塔分离的ε-己内酯与含氧气体在存在下接触 钴。 除去高沸点成分，得到低于0.15mgKOH / g的酸值。 因此，提供改善的聚合物外观的高品质ε-己内酯有利地在工业规模上生产，而无需重复纯化蒸馏或不使用昂贵的稳定剂或吸附剂来改善颜色。

公开(公告)号：US06458994B2

公开(公告)日：2002-10-01

申请号：US09861629

申请日：2001-05-22

申请人： Atsushi Okoshi ,  Etsuo Urabe ,  Masashi Yabuno ,  Hiroshi Ogawa ,  Kazuo Tanaka

发明人： Atsushi Okoshi ,  Etsuo Urabe ,  Masashi Yabuno ,  Hiroshi Ogawa ,  Kazuo Tanaka

IPC分类号： C07C5116

CPC分类号： C07C51/235 ,  C07C63/307

摘要： A process for producing a polycarboxylic acid which comprises performing liquid phase oxidation of polyalkyl-substituted aromatic aldehyde and/or oxide derivative of polyalkyl-substituted aromatic aldehyde as raw material for oxidation with molecular oxygen at two stages in water solvent in the presence of a catalyst comprising bromine or both bromine and a heavy metal(s) at a temperature of 180 to 280 ° C., thereby producing trimellitic acid or pyromellitic acid, wherein said liquid phase oxidation is performed in a continuous operation at the first stage and in a continuous operation or in a batch operation at the second stage and a total amount of bromine in said catalyst is divided to add separately at each the first stage and the second stage.

公开(公告)号：US5994565A

公开(公告)日：1999-11-30

申请号：US271966

申请日：1999-03-18

申请人： Kazuo Tanaka ,  Atsushi Okoshi ,  Hiroshi Ogawa

发明人： Kazuo Tanaka ,  Atsushi Okoshi ,  Hiroshi Ogawa

IPC分类号： C07D201/16 ,  C07D313/04

CPC分类号： C07D313/04

摘要： A process for producing purified .epsilon.-caprolactone from an .epsilon.-caprolactone-containing reaction product produced by the oxidation of cyclohexanone comprising subjecting the .epsilon.-caprolactone-containing reaction product to an alkali-treatment in the presence of an inert gas atmosphere or to a heat treatment in the presence of an inert gas atmosphere or to a combined alkali-treatment and heat treatment, and distilling the treated reaction product.

摘要翻译： 由通过环己酮氧化制备的含有ε-己内酯的反应产物制备纯化的ε-己内酯的方法，包括在含有ε-己内酯的反应产物在惰性气体气氛或热的存在下进行碱处理 在惰性气体气氛的存在下进行处理或进行组合的碱处理和热处理，并蒸馏处理的反应产物。

公开(公告)号：US06888023B2

公开(公告)日：2005-05-03

申请号：US10440255

申请日：2003-05-19

申请人： Kazuo Tanaka ,  Hiroshi Ogawa ,  Ikutraro Maruki ,  Atsushi Okoshi

发明人： Kazuo Tanaka ,  Hiroshi Ogawa ,  Ikutraro Maruki ,  Atsushi Okoshi

IPC分类号： C07C51/265 ,  C07C51/23

CPC分类号： C07C51/265 ,  C07C63/313

摘要： A process for producing pyromellitic acid which comprises oxidizing 2,4,5-trimethylbenzaldehyde and/or its oxidized derivative in the presence of a catalyst containing iron, manganese and bromine, or additionally containing zirconium or cerium continuously or semi-continuously using aqueous acetic acid solvent and 0.05-2% by weight of bromide ion. The catalyst used in the present invention has high activity, and the catalyst solution has low corrosive because the reaction is performed at low bromide concentration by using a solvent of aqueous acetic acid. So pyromellitic acid is produced industrially advantageously in high yield continuously or semi-continuously which has been a major difficulty up to now.

摘要翻译： 一种制备均苯四酸的方法，其包括在含铁，锰和溴的催化剂存在下氧化2,4,5-三甲基苯甲醛和/或其氧化的衍生物，或者使用乙酸水溶液连续或半连续地加入锆或铈 溶剂和0.05-2重量％的溴离子。 本发明中使用的催化剂具有高活性，催化剂溶液具有低腐蚀性，因为通过使用乙酸水溶液的低溴化物浓度进行反应。 所以均苯四酸在工业上有利地以高产率连续或半连续地产生，这在现在是一个主要的困难。

公开(公告)号：US06579990B2

公开(公告)日：2003-06-17

申请号：US09933075

申请日：2001-08-21

申请人： Kazuo Tanaka ,  Atsushi Okoshi ,  Kengi Nakaya

发明人： Kazuo Tanaka ,  Atsushi Okoshi ,  Kengi Nakaya

IPC分类号： C07D49300

CPC分类号： C07C51/56 ,  C07C51/43 ,  C07C51/573 ,  C07C63/313

摘要： A process for refined pyromellitic anhydride which comprises dissolving crude pyromellitic acid or crude pyromellitic anhydride in water, then cooling an aqueous solution thus obtained to perform crystallization as pyromellitic acid, then separating a crystal thus obtained from water, then anhydrating the crystal of pyromellitic acid thus separated with heating to produce pyromellitic anhydride, then vaporizing pyromellitic anhydride thus produced, cooling vapor of pyromellitic anhydride thus obtained, and thereby, recovering a refined crystal of pyromellitic anhydride.

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：US08034962B2

公开(公告)日：2011-10-11

申请号：US11835609

申请日：2007-08-08

申请人： Tomohiro Sugawara ,  Takeshi Koyama ,  Atsushi Okoshi ,  Takashi Sato ,  Shuichi Ueno

发明人： Tomohiro Sugawara ,  Takeshi Koyama ,  Atsushi Okoshi ,  Takashi Sato ,  Shuichi Ueno

IPC分类号： C07D407/04 ,  C08G65/48

CPC分类号： C07D307/89 ,  B33Y70/00

摘要： The present invention provides an acid anhydride ester obtained by esterifying cyclohexane-1,2,4-tricarboxylic acid-1,2-anhydride and a composition of the ester, and a heat-curable resin composition and a cured product of the composition. _Provided is an epoxy resin composition using the acid anhydride ester as a curing agent for an epoxy resin, the epoxy resin composition having, for example, the following properties (1), (2), and (3): (1) the epoxy resin composition has a low viscosity at room temperature, so the components of the composition can be favorably blended with each other, (2) the acid anhydride ester has a low vapor pressure at curing temperature, so no evaporation loss occurs after curing, and the intended design of blend is capable, and (3) a cured product to be made from the composition is colorless and transparent, and changes its color to a small extent even when the product is irradiated with light or heated for a long time period. The composition is suitably used as, for example, an encapsulant for a photoelectric conversion element such as a blue LED or a white LED, a molded article, a coating, or an adhesive.

摘要翻译： 本发明提供通过酯化环己烷-1,2,4-三羧酸-1,1-酐和酯的组合物得到的酸酐酯，以及热固性树脂组合物和该组合物的固化物。 提供使用酸酐酯作为环氧树脂固化剂的环氧树脂组合物，该环氧树脂组合物具有例如以下性质（1），（2）和（3）：（1）环氧树脂 树脂组合物在室温下的粘度低，因此可以有利地将组合物的组分相互混合，（2）酸酐在固化温度下蒸气压低，固化后不会发生蒸发损失， 共混物的预期设计是能够的，并且（3）由该组合物制成的固化产物是无色透明的，并且即使当产品被光照射或长时间加热时也将它的颜色变化很小。 该组合物适合用作例如蓝色LED或白色LED的光电转换元件的密封剂，成型品，涂层或粘合剂。

公开(公告)号：US20080306223A1

公开(公告)日：2008-12-11

申请号：US11629187

申请日：2005-05-17

申请人： Atsushi Okoshi ,  Ryuji Ideno ,  Takao Ota

发明人： Atsushi Okoshi ,  Ryuji Ideno ,  Takao Ota

IPC分类号： C08L63/00 ,  C09K3/00

CPC分类号： C08G59/4215 ,  C08L63/00

摘要： A curing agent for epoxy resins which comprises cyclohexanetricarboxylic acid anhydride (A) comprising trans,trans-1,2,4-cyclohexanetricarboxylic acid 1,2-anhydride expressed by formula (1) and aliphatic dicarboxylic acid anhydride (B) and an epoxy resin composition which comprises the curing agent and an epoxy resin are provided. The curing agent of the present invention can be handled easily since the curing agent is liquid at the ordinary temperature, exhibits an excellent curing property without addition of a curing accelerator and provides a cured product of an epoxy resin exhibiting excellent transmission of light and heat stability. The epoxy resin composition can be advantageously used for coating materials, adhesives, molded products, resins for encapsulating photo-semiconductors and coating fluids for protective films of color filters constituting liquid crystal display devices (LCD), solid state imaging devices (CCD) and electroluminescence (EL) devices.

摘要翻译： 环氧树脂固化剂，其包含由式（1）表示的反式，反式-1,2,4-环己烷三羧酸1,2-酐和脂族二羧酸酐（B）的环己烷三羧酸酐（A）和环氧树脂 提供了包含固化剂和环氧树脂的组合物。 本发明的固化剂可以容易地处理，因为固化剂在常温下为液体，在不加入固化促进剂的情况下表现出优异的固化性能，并且提供具有优异的光和热稳定性透过性的环氧树脂的固化产物 。 环氧树脂组合物可以有利地用于涂覆材料，粘合剂，模塑产品，用于封装光半导体的树脂和用于构成液晶显示装置（LCD），固态成像装置（CCD）和电致发光的彩色滤光片的保护膜的涂布液 （EL）设备。

公开(公告)号：US20050054879A1

公开(公告)日：2005-03-10

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： C07C45/59 ,  C07D317/12 ,  G03C1/492

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。