tetramethyl-isophthalic acid | 50679-45-3

• 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: tetramethyl-isophthalic acid
• 英文别名: Tetramethyl-isophthalsaeure；2,4,5,6-Tetramethylbenzene-1,3-dicarboxylic acid
• CAS: 50679-45-3
• 化学式: C₁₂H₁₄O₄
• 分子量: 222.241
• InChiKey: MKZOWDOHBBISIF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  74.6
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  甲醇 、 tetramethyl-isophthalic acid 在 盐酸 作用下， 生成 Tetramethyl-isophthalsaeure-dimethylester
  参考文献：
  名称：

  ÜberwasserlöslicheInhaltsstoffe von Papaver somniferum L. II.。米特隆

  摘要：

  DOI：

  10.1002/hlca.6602801168

文献信息

• Polyterephthalates having high clarity and process for making same
  申请人：THE GOODYEAR TIRE & RUBBER COMPANY

  公开号：EP0102913A2

  公开（公告）日：1984-03-14

  57 This invention relates to polyethylene terephthalate and copolymers thereof having high clarity and process for making the same. The invention provides a process for making PET using protonic acid catalysts which result in a polymer having a level of haze which is lower than has heretofore been attainable, using conventional metallic catalysts. Further, the polyesters so produced have a lower melt temperature which improves the processability.

  57 本发明涉及具有高透明度的聚对苯二甲酸乙二醇酯及其共聚物和制造工艺。本发明提供了一种使用质子酸催化剂制造 PET 的工艺，该工艺可使聚合物的雾度低于迄今为止使用传统金属催化剂所能达到的雾度。此外，这样生产出的聚酯具有较低的熔融温度，从而提高了加工性能。
• POLYESTER RESIN COMPOSITION
  申请人：FUJIFILM Corporation

  公开号：EP2527399B1

  公开（公告）日：2016-06-01
• ULTRAVIOLET ABSORBENT AND POLYMER MATERIAL CONTAINING THE SAME
  申请人：Fujie Yoshihiko

  公开号：US20100010123A1

  公开（公告）日：2010-01-14

  An ultraviolet absorbent, containing a compound represented by formula (1) or (2); and a polymer material containing the ultraviolet absorbent: wherein R 11 , R 12 and R 14 each independently represent a monovalent substituent; R 13 represents a hydrogen atom or a substituent having a Hammett substituent constant σ p of −0.35 or more; and n represents an integer of 0 to 4; and wherein R 21 represents a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms, or a substituted or unsubstituted phenyl group; R 22 represents a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms; R 23 represents a hydrogen atom or a substituent having a Hammett substituent constant σ p of −0.35 or more; R 24 represents a monovalent substituent; and m represents an integer of 0 to 4.
• POLYMER MATERIAL CONTAINING ULTRAVIOLET ABSORBENT
  申请人：Yawata Toshihiko

  公开号：US20100076124A1

  公开（公告）日：2010-03-25

  A polymer material, containing at least one kind of polymer substance selected from the group consisting of acrylic acid-based polymers, polyester-based polymers, and polycarbonate-based polymers; and a compound represented by formula (2) contained in the polymer substance: wherein A 21 and A 22 each independently represent an atom other than hydrogen atom and carbon atom; Y 21 and Y 22 each independently represent a hydrogen atom or a monovalent substituent; at least one of Y 21 and Y 22 represents a substituent having a Hammett substituent constant σp of 0.2 or more; Y 21 and Y 22 may bind to each other to form a ring; and (B) represents a group of atoms necessary for forming a five- or six-membered ring with A 21 , A 22 and the carbon atom.
• US7884146B2
  申请人：——

  公开号：US7884146B2

  公开（公告）日：2011-02-08