methyl-benzene-1,2,4,5-tetracarboxylic acid-2,4-dimethyl ester

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: methyl-benzene-1,2,4,5-tetracarboxylic acid-2,4-dimethyl ester
• 英文别名: Methyl-benzol-1,2,4,5-tetracarbonsaeure-2,4-dimethylester；4,6-Bis(methoxycarbonyl)-5-methylbenzene-1,3-dicarboxylic acid；4,6-bis(methoxycarbonyl)-5-methylbenzene-1,3-dicarboxylic acid
• 化学式: C₁₃H₁₂O₈
• 分子量: 296.233
• InChiKey: IYYAWIMPLAATJU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  21
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  127
• 氢给体数：
  2
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  Tetramethyl 3-methylbenzene-1,2,4,5-tetracarboxylate 在 氢氧化钾 作用下， 生成 methyl-benzene-1,2,4,5-tetracarboxylic acid-2,4-dimethyl ester
  参考文献：
  名称：

  Female Neurogenic Sexual Dysfunction Secondary to Clitoral Neuropathy

  摘要：

  We herein present several cases of female sexual dysfunction related in part to organic neurologic pathophysiology. These cases emphasize the role of the central and peripheral nervous systems in female sexual function.

  DOI：

  10.1080/713846813

文献信息

• METHOD FOR PRODUCING POLYIMIDE RESIN POWDER, AND THERMOPLASTIC POLYIMIDE RESIN POWDER
  申请人：Mitsubishi Gas Chemical Company, Inc.

  公开号：EP3031844A1

  公开（公告）日：2016-06-15

  The present invention provides a method for producing a polyimide resin powder, including the step of reacting (A) a tetracarboxylic acid component containing a tetracarboxylic dianhydride with (B) a diamine component containing an aliphatic diamine in the presence of (C) a solvent containing an alkylene glycol-based solvent represented by the formula (1): wherein Ra1 represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, Ra2 represents a linear alkylene group having from 2 to 6 carbon atoms, and n represents an integer of 1-3.

  本发明提供了一种生产聚酰亚胺树脂粉末的方法，包括以下步骤：(A)含有四羧酸二酐的四羧酸组分与(B)含有脂肪族二胺的二胺组分在(C)含有由式(1)表示的烷二醇基溶剂的溶剂存在下反应： 其中 Ra1 代表氢原子或具有 1 至 4 个碳原子的烷基，Ra2 代表具有 2 至 6 个碳原子的直链亚烷基，n 代表 1 至 3 的整数。
• POLYIMIDE RESIN COMPOSITION, AND (POLYIMIDE RESIN)-FIBER COMPOSITE MATERIAL
  申请人：Mitsubishi Gas Chemical Company, Inc.

  公开号：EP3031864A1

  公开（公告）日：2016-06-15

  A polyimide resin composition containing a polyimide resin (A) and an additive (B), the polyimide resin (A) containing a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), a content ratio of the repeating structural unit of formula (1) with respect to the total of the repeating structural unit of formula (1) and the repeating structural unit of formula (2) being from 40 to 70 mol%; and [2] a composite material containing a fiber material (C) impregnated with a polyimide resin (A) containing a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), a content ratio of the repeating structural unit of formula (1) with respect to the total of the repeating structural unit of formula (1) and the repeating structural unit of formula (2) being from 40 to 70 mol%: wherein R1 represents a divalent group having from 6 to 22 carbon atoms containing at least one alicyclic hydrocarbon structure: R2 represents a divalent chain aliphatic group having from 5 to 20 carbon atoms; and X1 and X2 each independently represent a tetravalent group having from 6 to 22 carbon atoms containing at least one aromatic ring.

  一种含有聚酰亚胺树脂（A）和添加剂（B）的聚酰亚胺树脂组合物，该聚酰亚胺树脂（A）含有下式（1）表示的重复结构单元和下式（2）表示的重复结构单元，式（1）的重复结构单元与式（1）的重复结构单元和式（2）的重复结构单元的总和的含量比为 40 至 70 摩尔%；以及[2]一种复合材料，其中含有浸渍了聚酰亚胺树脂（A）的纤维材料（C），聚酰亚胺树脂（A）含有下式(1)表示的重复结构单元和下式(2)表示的重复结构单元，式(1)的重复结构单元占式(1)的重复结构单元和式(2)的重复结构单元总量的比例为 40 至 70 摩尔%： 其中 R1 代表具有 6 至 22 个碳原子的二价基团，含有至少一个脂环烃结构：R2 代表具有 5 至 20 个碳原子的二价链脂肪族基团；X1 和 X2 各自独立地代表具有 6 至 22 个碳原子的四价基团，其中至少含有一个芳香环。
• POLYIMIDE POWDER COMPOSITION
  申请人：MITSUBISHI GAS CHEMICAL COMPANY, INC.

  公开号：EP3795639A1

  公开（公告）日：2021-03-24

  Provided is a polyimide powder composition containing a thermoplastic polyimide resin powder (A) and silica particles (B) having a volume average particle size D50 of 90 nm or less.

  本文提供了一种聚酰亚胺粉末组合物，其中含有热塑性聚酰亚胺树脂粉末（A）和体积平均粒径 D50 为 90 纳米或更小的二氧化硅颗粒（B）。
• POLYIMIDE RESIN COMPOSITION
  申请人：MITSUBISHI GAS CHEMICAL COMPANY, INC.

  公开号：EP3795638A1

  公开（公告）日：2021-03-24

  A polyimide resin composition obtained by blending a polyimide resin (A) and glass fiber (B), the polyimide resin (A) containing a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), a content ratio of the repeating structural unit of the formula (1) with respect to the total of the repeating structural unit of the formula (1) and the repeating structural unit of the formula (2) being 20 to 70 mol%, wherein R1 represents a divalent group having from 6 to 22 carbon atoms containing at least one alicyclic hydrocarbon structure; R2 represents a divalent chain aliphatic group having from 5 to 16 carbon atoms; and X1 and X2 each independently represent a tetravalent group having from 6 to 22 carbon atoms containing at least one aromatic ring.

  一种通过混合聚酰亚胺树脂（A）和玻璃纤维（B）得到的聚酰亚胺树脂组合物，该聚酰亚胺树脂（A）含有下式（1）表示的重复结构单元和下式（2）表示的重复结构单元、式(1)的重复结构单元与式(1)的重复结构单元和式(2)的重复结构单元总和的含量比为 20 至 70 摩尔%，其中 R1 代表具有 6 至 22 个碳原子的二价基团，含有至少一个脂环烃结构；R2 代表具有 5 至 16 个碳原子的二价链脂肪族基团；以及 X1 和 X2 各自独立地代表具有 6 至 22 个碳原子的四价基团，其中至少含有一个芳香环。
• RESIN MOLDING
  申请人：MITSUBISHI GAS CHEMICAL COMPANY, INC.

  公开号：EP3795640A1

  公开（公告）日：2021-03-24

  A resin molded article having a microphase-separated structure, the resin molded article containing a polyimide resin (A) and a polyether ketone resin (B), the polyimide resin (A) containing a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), a content ratio of the repeating structural unit of formula (1) with respect to the total of the repeating structural unit of formula (1) and the repeating structural unit of formula (2) being 20 to 70 mol%, and a weight average molecular weight Mw being 40,000 to 150,000, wherein R1 represents a divalent group having from 6 to 22 carbon atoms containing at least one alicyclic hydrocarbon structure; R2 represents a divalent chain aliphatic group having from 5 to 16 carbon atoms; and X1 and X2 each independently represent a tetravalent group having from 6 to 22 carbon atoms containing at least one aromatic ring.

  一种具有微相分离结构的树脂模塑品，该树脂模塑品含有聚酰亚胺树脂（A）和聚醚酮树脂（B），聚酰亚胺树脂（A）含有下式（1）表示的重复结构单元和下式（2）表示的重复结构单元、式（1）的重复结构单元与式（1）的重复结构单元和式（2）的重复结构单元总和的含量比为 20 至 70 摩尔%，重量平均分子量 Mw 为 40,000 至 150,000、 其中 R1 代表具有 6 至 22 个碳原子、含有至少一个脂环烃结构的二价基团；R2 代表具有 5 至 16 个碳原子的二价链脂肪族基团；X1 和 X2 各自独立地代表具有 6 至 22 个碳原子、含有至少一个芳香环的四价基团。