4-甲基-1H,3H-苯并[1,2-c:4,5-c']二呋喃-1,3,5,7-四酮 | 88482-23-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异苯并呋喃
• 中文名称: 4-甲基-1H,3H-苯并[1,2-c:4,5-c']二呋喃-1,3,5,7-四酮
• 英文名称: 3-methylpyromellitic dianhydride
• 英文别名: 3-methyl-benzene-1,2,4,5-tetracarboxylic acid-1,2;4,5-dianhydride；3-Methyl-benzol-1,2,4,5-tetracarbonsaeure-1,2;4,5-dianhydrid；4-methyl-1H,3H-benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone；8-methylfuro[3,4-f][2]benzofuran-1,3,5,7-tetrone
• CAS: 88482-23-9
• 化学式: C₁₁H₄O₆
• 分子量: 232.149
• InChiKey: VNJSMTXECMSPRW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  17
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  86.7
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  4-甲基-1H,3H-苯并[1,2-c:4,5-c']二呋喃-1,3,5,7-四酮 、 对苯二胺 以 N-甲基吡咯烷酮 、 甲苯 为溶剂， 反应 22.0h， 生成
  参考文献：
  名称：

  作为氨基封端的酰亚胺单体、有机杂化膜及其制备方法

  摘要：

  一种作为氨基封端的酰亚胺单体及其制备方法，涉及材料化学领域，该酰亚胺单体由二酐单体和二胺单体缩合而成，具有较佳的刚性。其结构新颖，原料易得，制备简单，可以作为有机杂化树脂材料中的氨基封端，明显改善有机杂化树脂材料的力学性能。一种有机杂化膜及其制备方法，该有机杂化膜采用上述酰亚胺单体与胺源化合物、交联剂、二醛化合物混合后加工得到。其不仅制备简单，操作方便，且该有机杂化膜机械性能和热稳定性优异，具有较佳的可锻塑、可修复、可回收性能。

  公开号：

  CN111303004B
• 作为产物：
  描述：

  麦角固醇 在 硝酸 作用下， 200.0 ℃ 、1.33 Pa 条件下， 生成 4-甲基-1H,3H-苯并[1,2-c:4,5-c']二呋喃-1,3,5,7-四酮
  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

• Positive tone photosensitive compositions containing amic acid as latent base catalyst
  申请人：PROMERUS, LLC

  公开号：US11061328B2

  公开（公告）日：2021-07-13

  Embodiments in accordance with the present invention encompass photosensitive compositions containing a base soluble polymer, a latent base catalyst, a photoactive compound and an epoxy crosslinking agent. The compositions are useful for forming films that can be patterned to create structures for microelectronic devices, microelectronic packaging, microelectromechanical systems, optoelectronic devices and displays. In some embodiments the compositions of this invention are shown to feature excellent hitherto unachievable mechanical properties. More specifically, the compositions exhibit increased photo speed, higher elongation to break, higher tensile strength and higher glass transitions temperatures than the conventional compositions, among other enhanced properties. Accordingly, the positive images formed therefrom exhibit improved thermo-mechanical properties, among other property enhancements.

  根据本发明的实施方案，光敏组合物含有基溶性聚合物、潜基催化剂、光活性化合物和环氧交联剂。这些组合物可用于形成可图案化的薄膜，以创建微电子器件、微电子封装、微机电系统、光电子器件和显示器的结构。在某些实施方案中，本发明的组合物具有迄今为止无法实现的优异机械性能。更具体地说，与传统组合物相比，本发明组合物具有更高的光速、更高的断裂伸长率、更高的拉伸强度和更高的玻璃转化温度，以及其他更强的性能。因此，由其形成的正像除其他性能增强外，还具有更好的热机械性能。
• Reactive end group containing polyimides and polyamic acids and photosensitive compositions thereof
  申请人：PROMERUS, LLC

  公开号：US11535709B2

  公开（公告）日：2022-12-27

  Embodiments in accordance with the present invention encompass polyamic acid or polyimide polymers containing a reactive maleimide end group as well as photosensitive compositions made therefrom which are useful for forming films that can be patterned to create structures for microelectronic devices, microelectronic packaging, microelectromechanical systems, optoelectronic devices and displays. In some embodiments the compositions of this invention are shown to feature excellent hitherto unachievable mechanical properties. The negative images formed therefrom exhibit improved thermo-mechanical properties, among other property enhancements.

  本发明的实施例包括含有反应性马来酰亚胺端基的聚酰胺酸或聚酰亚胺聚合物以及由其制成的光敏组合物，这些组合物可用于形成薄膜，这些薄膜可进行图案化，以形成微电子设备、微电子封装、微机电系统、光电设备和显示器的结构。在某些实施方案中，本发明的组合物具有迄今为止无法实现的优异机械性能。由其形成的负像具有更好的热机械性能和其他性能。
• Liquid display device
  申请人：——

  公开号：US20010048498A1

  公开（公告）日：2001-12-06

  In a liquid crystal display device of IPS mode, occurrence of a sticking-image and after-image phenomenon is prevented. A liquid crystal display device comprising a pair of substrates, at least one of the substrates being transparent; a liquid crystal layer interposed between the pair of substrates; and pixel electrodes and common electrodes and active elements arranged on at least one substrate between the pair of substrates, wherein a pair of alignment layers are made of an organic polymer of polyamic acid group or polymamide ester group having a relative imidization ratio above 60%; or at least one layer of an insulation film is interposed between the alignment layer in a side of the substrate having the group of electrodes formed thereon, and the pixel electrode and the common electrode disposed under the alignment layer to prevent occurrence of the sticking image and the after image by flattening the electrode portions to moderate electric field concentration.

  在 IPS 模式的液晶显示装置中，可防止出现粘连图像和残像现象。 一种液晶显示装置，包括一对基板，其中至少一个基板是透明的；一对基板之间有液晶层；以及像素电极、共用电极和有源元件布置在一对基板之间的至少一个基板上，其中一对对准层是由聚酰胺酯基或聚酰胺酸基的有机聚合物制成的，其相对亚胺化率高于 60%；或在形成电极组的基板一侧的对准层与设置在对准层下的像素电极和共用电极之间插入至少一层绝缘膜，以通过使电极部分扁平以缓和电场浓度来防止出现粘连图像和残像。
• Active matrix type liquid crystal display apparatus
  申请人：——

  公开号：US20040170777A1

  公开（公告）日：2004-09-02

  An active matrix type liquid crystal display apparatus has a pair of substrates, at least one of the substrates being transparent; a liquid crystal layer arranged between the pair of substrates; and electrode structure for generating an electric field having a dominant component parallel to a surface of the substrate and passing through the liquid crystal layer, the electrode structure being formed on one of the pair of substrates; a pair of alignment layers formed on respective surfaces in contact with the liquid crystal layer of the pair of substrates; and a pair of polarizing plates arranged so as to sandwich the pair of substrates, wherein the glass transition temperature Tg of a boundary surface between said liquid crystal layer and the alignment layer is higher than the nematic-isotropic phase transition temperature T(N-I) of a liquid crystal composite forming the liquid crystal layer.
• Liquid crystal display device
  申请人：——

  公开号：US20040165132A1

  公开（公告）日：2004-08-26

  A liquid crystal display device having a pair of substrates, at least one of the substrates being transparent, a liquid crystal layer interposed between the pair of substrates, and pixel electrodes and common electrodes and active elements being arranged on at least one substrate between the pair of substrates. The liquid crystal of the liquid crystal layer is controlled to perform display by applying a voltage between the pixel electrode and the common electrode. An alignment layer is disposed on a surface in contact with the liquid crystal layer of each of the pair of substrates, and the alignment layer is made of an organic polymer selected from the group consisting of polyamic acid group polymers and polyimide ester group polymers having a relative imidization ratio above 60%.