1,3-Dioxooctahydro-2-benzofuran-5,6-dicarboxylic acid | 676642-36-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 1,3-Dioxooctahydro-2-benzofuran-5,6-dicarboxylic acid
• 英文别名: 1,3-dioxo-3a,4,5,6,7,7a-hexahydro-2-benzofuran-5,6-dicarboxylic acid
• CAS: 676642-36-7
• 化学式: C₁₀H₁₀O₇
• 分子量: 242.18
• InChiKey: KUPAKADFLMGMHT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.8
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  118
• 氢给体数：
  2
• 氢受体数：
  7

文献信息

• Process for producing hydrogenated aromatic polycarboxylic acid and process for producing hydrogenated aromatic polycarboxylic anhydride
  申请人：——

  公开号：US20030149297A1

  公开（公告）日：2003-08-07

  Disclosed are processes for industrially advantageously producing at a good yield respectively, a hydrogenated aromatic polycarboxylic acid and an acid anhydride thereof each having a high purity. The present invention provides processes for producing a hydrogenated aromatic polycarboxylic acid by (1) hydrogenating an aromatic polycarboxylic acid at a hydrogen partial pressure of 1 MPa or more by a batch system in the presence of a catalyst containing rhodium and palladium in a proportion of 0.5 to 10 parts by weight per 100 parts by weight of the aromatic polycarboxylic acid and by (2) feeding an aromatic polycarboxylic acid to a filling bed of a catalyst containing rhodium and palladium at a WHSV of 1 to 100 h −1 to hydrogenate it at a hydrogen partial pressure of 1 MPa or more by a continuous flow system, and a process for producing a hydrogenated aromatic polycarboxylic anhydride by subjecting the hydrogenated aromatic polycarboxylic acid obtained by the processes described above to dehydration reaction with acetic anhydride of 0.64 to 5.7 times mole based on a carboxyl group of the hydrogenated aromatic polycarboxylic acid.

  本发明揭示了分别以良好的收率工业化地生产高纯度氢化芳香族多羧酸及其酸酐的方法。本发明提供了一种通过（1）在催化剂中加入含有铑和钯的催化剂，其比例为每100份芳香族多羧酸中0.5至10份重量，在氢分压力为1 MPa或更高的情况下，通过批量系统对芳香族多羧酸进行氢化；以及（2）将芳香族多羧酸送入含有铑和钯的催化剂填充层中，以1至100 h-1的WHSV速率在氢分压力为1 MPa或更高的连续流系统中进行氢化的方法，来生产氢化芳香族多羧酸的方法；以及通过将以上描述的氢化芳香族多羧酸与以0.64至5.7倍摩尔的乙酸酐为基础的羧基进行脱水反应，来制备氢化芳香族多羧酸酐的方法。
• PROCESS AND APPARATUS FOR PRODUCTION OF COLORLESS TRANSPARENT RESIN FILM
  申请人：OISHI Jitsuo

  公开号：US20100187719A1

  公开（公告）日：2010-07-29

  A method for producing a colorless transparent resin film by a solution flow casting method containing: flow-casting an organic solvent solution of a polyamic acid or a polyimide on a support; and drying, the method containing at least the following step (1), step (2) and step (3) in this order, and an apparatus therefor: (1) a step of flow-casting an organic solvent solution of a polyamic acid or polyamide on a support, (2) a step of evaporating the organic solvent while blowing a gas having an oxygen content of from 0.001 to 15% by volume at a temperature of from 100 to 170° C. onto the flow-cast material, and releasing as a self-supporting film from the support, and (3) a step of performing the following step (3-1) and step (3-2) in this order: (3-1) a step of lowering a residual ratio of the organic solvent in the self-supporting film while blowing a gas having an oxygen content of 15% by volume or less at a temperature of from 100 to 250° C. onto the film by using at least one dryer of a type of blowing a heated gas, and (3-2) a step of lowering the residual ratio of the organic solvent in the self-supporting film while blowing a gas having an oxygen content of 5% by volume or less at a temperature of from 150 to 400° C. onto the film by using at least one dryer of a type of blowing a heated gas.

  一种通过溶液流铸法制备无色透明树脂薄膜的方法，包括：在支撑物上流铸聚酰胺酸或聚酰亚胺的有机溶剂溶液；并干燥，该方法至少包括以下步骤（1）、步骤（2）和步骤（3），并提供相应的设备：(1)在支撑物上流铸聚酰胺酸或聚酰亚胺的有机溶剂溶液；(2)在向流铸材料吹送氧含量为0.001至15%体积的气体的同时，蒸发有机溶剂，温度在100至170°C之间，从支撑物上释放为自支撑膜；(3)按照以下步骤（3-1）和步骤（3-2）的顺序执行：(3-1)在使用至少一种吹送加热气体的干燥器的情况下，以15%体积以下的氧含量的气体在100至250°C的温度下吹送，降低自支撑膜中有机溶剂的残留比率；(3-2)在使用至少一种吹送加热气体的干燥器的情况下，以5%体积以下的氧含量的气体在150至400°C的温度下吹送，降低自支撑膜中有机溶剂的残留比率。
• COMPOSITION FOR FORMING LIQUID CRYSTAL ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY ELEMENT
  申请人：SOKI CORPORATION

  公开号：US20150056367A1

  公开（公告）日：2015-02-26

  The present invention, which enables to align a liquid crystal molecule, when no voltage is applied thereto, and also to control pretilt angle of the liquid crystal molecule, relates to a composition for a liquid crystal alignment film comprising components represented by the following (A) to (D): (A) a meta-phenylene diamine derivative represented by the general formula [1]; (B) a meta-phenylene diamine derivative represented by the general formula [2]; (C) a para-arylene diamine represented by the general formula [3]; (D) a tetracarboxylic acid represented by the general formula [4] or a tetracarboxylic acid anhydride represented by the general formula [4′]; (wherein R 1 represents an alkyl group having 1 to 6 carbon atoms or the like, R 2 represents an alkyl group having 8 to 20 carbon atoms or the like, t moieties of R a represent an alkyl group having 1 to 3 carbon atoms or the like, n represents an integer of 1 to 3, t represents an integer of 0 to 4, T represents an oxygen atom or the like, Y represents an amino group, and Z represents a tetravalent hydrocarbon group.).

  本发明涉及一种液晶取向膜组合物，包括以下（A）至（D）的组分，能够在不施加电压的情况下使液晶分子对齐，并控制液晶分子的预倾角：（A）由通式[1]表示的间苯二胺衍生物；（B）由通式[2]表示的间苯二胺衍生物；（C）由通式[3]表示的对芳二胺；（D）由通式[4]表示的四羧酸或由通式[4']表示的四羧酸酐；（其中，R1表示具有1至6个碳原子的烷基或类似物，R2表示具有8至20个碳原子的烷基或类似物，R的t个官能团表示具有1至3个碳原子的烷基或类似物，n表示1至3的整数，t表示0至4的整数，T表示氧原子或类似物，Y表示氨基，Z表示四价碳氢基团）。
• POLYIMIDE RESIN COMPOSITION
  申请人：MITSUBISHI GAS CHEMICAL COMPANY, INC.

  公开号：US20150225523A1

  公开（公告）日：2015-08-13

  Provided is a polyimide resin composition capable of forming a polyimide film which is excellent in transparency and heat resistance and has a low thermal linear expansion coefficient. The polyimide resin composition contains a polyimide resin produced by reacting (A) a tetracarboxylic dianhydride with (B) a diamine containing a phenolic hydroxyl group-containing diamine in an amount of from 5 to 100 mol % of the total diamine; and silica microparticles, in a ratio by mass of from 25/75 to 60/40.

  提供的是一种聚酰亚胺树脂组合物，能够形成具有优异透明度和耐热性，并且具有较低的热线性膨胀系数的聚酰亚胺薄膜。该聚酰亚胺树脂组合物包含通过将（A）四羧酸二酐与（B）含有酚羟基的二胺反应而制得的聚酰亚胺树脂，其中酚羟基含量为总二胺的5至100摩尔％；以及硅微粒，其质量比为25/75至60/40。
• FIBER-REINFORCED COMPOSITE MATERIAL
  申请人：Mitsubishi Gas Chemical Company, Inc.

  公开号：EP3133108A1

  公开（公告）日：2017-02-22

  A fiber-reinforced composite material of the present invention is a fiber-reinforced composite material comprising: an epoxy resin cured product obtained by curing an epoxy resin composition and a reinforcing fiber, wherein the epoxy resin composition comprises an epoxy resin (A) and a curing agent (B); 10 to 80% by mass of the curing agent (B) is 1,2,4-cyclohexanetricarboxylic acid-1,2-anhydride; and the reinforcing fiber comprises one or more selected from the group consisting of a carbon fiber, an aramid fiber, and a boron fiber.

  本发明的纤维增强复合材料是一种纤维增强复合材料，包括通过固化环氧树脂组合物和增强纤维得到的环氧树脂固化物，其中环氧树脂组合物包括环氧树脂（A）和固化剂（B）；固化剂（B）质量的 10%至 80%为 1,2,4-环己烷三羧酸-1,2-酸酐；增强纤维包括碳纤维、芳纶纤维和硼纤维中的一种或多种。