3,8,13,18,23-Pentaoxapentacosane | 98213-73-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3,8,13,18,23-Pentaoxapentacosane
• 英文别名: 1-ethoxy-4-[4-[4-(4-ethoxybutoxy)butoxy]butoxy]butane
• CAS: 98213-73-1
• 化学式: C₂₀H₄₂O₅
• 分子量: 362.5
• InChiKey: OCDPCRCWLMPRDI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  25
• 可旋转键数：
  22
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  46.2
• 氢给体数：
  0
• 氢受体数：
  5

文献信息

• Process for polymerizing a methacrylic ester or an acrylic ester
  申请人：Kuraray Co., Ltd.

  公开号：US20030204033A1

  公开（公告）日：2003-10-30

  (1) A methacrylic ester or an acrylic ester is anionically polymerized, using a polymerization initiator compound comprising an addition reaction product of a conjugated diene compound and an organic alkali metal compound, in the presence of a tertiary organoaluminum compound having in the molecule thereof a chemical structure represented by a formula: Al—O—Ar wherein Ar represents an aromatic ring; or (2) a methacrylic ester or an acrylic ester is anionically polymerized, using a polymerization initiator compound comprising an addition reaction product of an organic alkali metal compound and a compound having a 1,1-diaryl-1-alkene structure, by adding the ester in the form of a mixture with the above-mentioned specific tertiary organoaluminum compound to the polymerization system. In this way, various species of the esters can be anionically polymerized with a high initiation efficiency and a high living polymerization property in a solvent which can easily be recovered and reused under a mild cooling condition, using an organic alkali metal compound which has relatively good convenience.

  (1) 采用聚二烯化合物和有机碱金属化合物的加成反应产物组成的聚合引发剂化合物，在三级有机铝化合物的存在下，阴离子聚合甲基丙烯酸酯或丙烯酸酯，该三级有机铝化合物的分子中具有以下化学结构的公式：Al-O-Ar，其中Ar代表芳香环；或 (2) 采用有机碱金属化合物和具有1,1-二芳基-1-烯烃结构的化合物的加成反应产物组成的聚合引发剂化合物，将酯以与上述特定三级有机铝化合物的混合物形式添加到聚合体系中，从而在可以轻松回收和在温和冷却条件下重复使用的溶剂中，使用相对方便的有机碱金属化合物高效引发各种酯的阴离子聚合，并具有高活性聚合性能。
• METHOD FOR PRODUCING ANIONIC POLYMER
  申请人：Kuraray Co., Ltd.

  公开号：EP3190130A1

  公开（公告）日：2017-07-12

  Provided is a method for producing an anionic polymer in an industrially advantageous manner, whereby at the time of anionically polymerizing monomers using a solvent whose boiling point at atmospheric pressure is higher than the polymerization temperature, temperature control can be achieved by quickly removing the heat of the polymerization reaction using a simple device. The method for producing an anionic polymer includes anionically polymerizing a conjugated diene, an aromatic vinyl compound, or a mixture thereof under a condition where the amount of an inert gas present with respect to 1 kg of a solvent whose boiling point at atmospheric pressure is higher than the polymerization temperature is 20 mmol or less.

  本发明提供了一种以对工业有利的方式生产阴离子聚合物的方法，该方法在使用常压下沸点高于聚合温度的溶剂对单体进行阴离子聚合时，可通过使用简单装置快速去除聚合反应的热量来实现温度控制。生产阴离子聚合物的方法包括在惰性气体相对于 1 千克常压下沸点高于聚合温度的溶剂的存在量为 20 毫摩尔或以下的条件下，对共轭二烯、芳香族乙烯基化合物或它们的混合物进行阴离子聚合。
• DENTAL POLYMERIZABLE COMPOSITION
  申请人：Kuraray Noritake Dental Inc.

  公开号：EP3195846A1

  公开（公告）日：2017-07-26

  The present invention provides a dental polymerizable composition that requires less discharging force, is easily formable, has low polymerization shrinkage stress during curing, and exhibits high stain resistance and surface gloss when cured. The present invention relates to a dental polymerizable composition including a (meth)acrylic block copolymer (A), a polymerizable monomer (B), and a polymerization initiator (C). The (meth)acrylic block copolymer (A) consists of a (meth)acrylic polymer block (a) having a curable functional group and a (meth)acrylic polymer block (b) having no curable functional group. The curable functional group has a partial structure represented by the following general formula (1):

  本发明提供了一种牙科可聚合组合物，该组合物所需的放电力较小，易于成型，固化过程中的聚合收缩应力较低，固化后具有较高的抗污性和表面光泽。本发明涉及一种牙科可聚合组合物，包括（甲基）丙烯酸嵌段共聚物（A）、可聚合单体（B）和聚合引发剂（C）。甲基丙烯酸嵌段共聚物（A）由具有可固化官能团的甲基丙烯酸聚合物嵌段（a）和不具有可固化官能团的甲基丙烯酸聚合物嵌段（b）组成。可固化官能团的部分结构由以下通式（1）表示：
• METHOD FOR PRODUCING TEBBE COMPLEX
  申请人：Kuraray Co., Ltd.

  公开号：EP3202771A1

  公开（公告）日：2017-08-09

  The present invention relates to a method for producing a Tebbe complex having high purity and high activity and having excellent storage stability in a high yield, the method including allowing bis(cyclopentadienyl)titanium dichloride and trimethylaluminum to react with each other in the presence of a solvent such that a solubility of the Tebbe complex in 1 g of the solvent at 25°C is 0.5 mmol/g or less.

  本发明涉及一种以高产率生产具有高纯度、高活性和优异贮存稳定性的特贝络合物的方法，该方法包括让双(环戊二烯基)二氯化钛和三甲基铝在溶剂存在下相互反应，使特贝络合物在25℃时在1克溶剂中的溶解度为0.5毫摩尔/克或更低。
• COPOLYMER OF 1, 3, 7-OCTATRIENE AND BUTADIENE, HYDRIDE THEREOF, AND METHOD FOR PRODUCING SAID COPOLYMER
  申请人：Kuraray Co., Ltd.

  公开号：EP3564278A1

  公开（公告）日：2019-11-06

  The present invention provides a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from butadiene and a hydride thereof. Furthermore, the present invention provides a method of producing a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from butadiene.

  本发明提供了一种共聚物，其中含有衍生自 1，3，7-辛三烯的结构单元和衍生自丁二烯的结构单元及其氢化物。此外，本发明还提供了一种生产共聚物的方法，该共聚物含有衍生自 1,3,7-辛三烯的结构单元和衍生自丁二烯的结构单元。