α,α,α',α'-tetrakis(4-hydroxyphenyl)-1,4-diethylbenzene | 76937-79-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 三苯基化合物
• 英文名称: α,α,α',α'-tetrakis(4-hydroxyphenyl)-1,4-diethylbenzene
• 英文别名: alpha,alpha'-Dimethyl-alpha,alpha,alpha',alpha'-tetrakis(4-hydroxyphenyl)-p-xylene；4-[1-[4-[1,1-bis(4-hydroxyphenyl)ethyl]phenyl]-1-(4-hydroxyphenyl)ethyl]phenol
• CAS: 76937-79-6
• 化学式: C₃₄H₃₀O₄
• 分子量: 502.61
• InChiKey: XUWKVNOEUYWHCM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.7
• 重原子数：
  38
• 可旋转键数：
  6
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  80.9
• 氢给体数：
  4
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  1,4-二乙酰苯 、 苯酚 以0.0215 mols of α,α′-dimethyl-α,α,α′,α′-tetrakis(4-hydroxyphenyl)-p-xylene (produced from 1,4-diacetylbenzene and phenol的产率得到α,α,α',α'-tetrakis(4-hydroxyphenyl)-1,4-diethylbenzene
  参考文献：
  名称：

  Branched polycarbonate resin

  摘要：

  使用具有特定结构的四羟基酚作为分支剂，在生产分支型聚碳酸酯树脂时。该树脂的分支剂含量（分支剂/（二羟基酚+链终止剂+分支剂）×100）为0.01至0.4摩尔％，固有粘度[η]为0.5至0.6，并且基本没有交联。该树脂具有降低的分支剂含量和良好的熔融特性，包括高熔融张力。它表现出改善的吹塑成型模塑性等，并且给出良好的成型，特别是具有改善的外观和色调。

  公开号：

  US06222004B1

文献信息

• Optically active compound and photosensitive resin composition
  申请人：——

  公开号：US20030211421A1

  公开（公告）日：2003-11-13

  A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1): A −[( J ) m −( X-Pro )] n (1) wherein A represents a hydrophobic unit comprising at least one kind of hydrophobic groups selected from a hydrocarbon group and a heterocyclic group, J represents a connecting group, X-Pro represents a hydrophilic group protected by a protective group Pro which is removable by light exposure, m represents 0 or 1, and n represents an integer of not less than 1. The protective group Pro may be removable by light exposure in association with the photosensitizer (especially, a photo acid generator), or may be a hydrophobic protective group. The hydrophilic group may be a hydroxyl group or a carboxyl group. The photoactive compound has high sensitivity to a light source of short wavelength beams, for resist application, therefore, the photoactive compound is advantageously used for forming a pattern with high resolution.

  一种光活性化合物与光敏剂结合使用，由以下公式（1）表示： A −[( J ) m −( X-Pro )] n (1) 其中，A代表至少包括一种从烃基和杂环基中选择的疏水基的疏水单元，J代表连接基团，X-Pro代表由光照可去除的保护基团Pro保护的亲水基团，m代表0或1，n代表不少于1的整数。 保护基团Pro可以与光敏剂（特别是光酸发生剂）一起通过光照可去除，也可以是疏水保护基团。亲水基团可以是羟基或羧基。光活性化合物对短波长光源具有很高的敏感性，用于光刻应用，因此，该光活性化合物有利于形成具有高分辨率的图案。
• POLYCARBONATE AND PRODUCTION THEREOF
  申请人：DAICEL CHEMICAL INDUSTRIES, LTD.

  公开号：EP0577849A1

  公开（公告）日：1994-01-12

  A polycarbonate which does not undergo coloration or is substantially free from chloride ions causative of coloration, which has a branching parameter (G) of 0.1 to 1.0 and a hydroxyl terminal content of 20 mole % or less based on the total terminal content and/or a chloride ion concentration of 10 ppm or less and/or a sum of the alkali metal ion concentration and the alkaline earth metal ion concentration of 1 ppm or less. A process for producing the polycarbonate by melt transesterification, which comprises using as the transesterification catalyst (a) a basic nitrogen compound and/or (b) a compound containing an element selected from the group consisting of those of groups IIb, IVb and Vb of the periodic table, or a combination of (a) a basic nitrogen compound with (b) a compound containing an element selected from the group consisting of alkali and alkaline earth metals.

  一种不着色或基本上不含导致着色的氯离子的聚碳酸酯，其支化参数(G)为 0.1 至 1.0，以总端子含量为基准，羟基端子含量为 20 摩尔%或以下，和/或氯离子浓度为 10 ppm 或以下，和/或碱金属离子浓度与碱土金属离子浓度之和为 1 ppm 或以下。一种通过熔融酯交换反应生产聚碳酸酯的工艺，该工艺包括使用以下物质作为酯交换反应催化剂：(a)碱性氮化合物和/或(b)含有选自元素周期表Ⅱb、Ⅳb和Ⅴb族的元素的化合物，或(a)碱性氮化合物与(b)含有选自碱金属和碱土金属的元素的化合物的组合。
• Aromatic polycarbonate and production method thereof
  申请人：MITSUI TOATSU CHEMICALS, Inc.

  公开号：EP0600447A2

  公开（公告）日：1994-06-08

  A method for preparing an aromatic polycarbonate having less content of a low molecular weight oligomer which comprises the steps of : (A) conducting an interfacial polymerization reaction in a reaction system comprising at least one aromatic dihydroxy compound, a carbonate precursor, an alkali metal or alkaline earth metal base, water and an organic solvent in the absence of an endcapping agent, and (B) conducting an interfacial polymerization reaction with the addition of an endcapping agent after at least one of the following parameters reaches a predetermined value : (1) a weight-average molecular weight of a prepolymer obtained in step A, (2) a residual amount of the aromatic dihydroxy compound which is contained in the reaction mixture obtained in step A, (3) an amount ratio of a bishaloformate compound to a prepolymer wherein the bishaloformate compound is a bishaloformate derivative of a dihydroxy compound and is contained in the reaction mixture obtained in step A.

  一种制备低分子量低聚物含量较少的芳香族聚碳酸酯的方法，包括以下步骤： ： (A) 在反应体系中进行界面聚合反应，该反应体系包括至少一种芳香族二羟基化 合物、碳酸盐前体、碱金属或碱土金属碱、水和有机溶剂，在没有封端剂的情 况下，以及 (B) 在下列参数中的至少一个参数达到预定值后，加入终结封端剂进行界面聚合反应： (1) 在步骤 A 中获得的预聚物的重量平均分子量、 (2) 在步骤 A 中得到的反应混合物中含有的芳香族二羟基化合物的残留量、 (3) 双羟烷基甲酸酯化合物与预聚物的量比，其中双羟烷基甲酸酯化合物是二羟基化合物的双羟烷基甲酸酯衍生物，包含在步骤 A 中得到的反应混合物中。
• (Co)polycarbonate composition and process for preparing the same
  申请人：DAICEL CHEMICAL INDUSTRIES, LTD.

  公开号：EP0622418A2

  公开（公告）日：1994-11-02

  A (co)polycarbonate composition mainly comprising a (co)polycarbonate having a limiting viscosity number [η] of 0.2 to 1.0 dl/g and terminal hydroxyl groups in an amount of 20 mole % or below based on all the terminal groups of the (co)polycarbonate and is substantially free from any branched structure which might otherwise be formed by a side reaction, which contains chlorine (causasive of discoloration) in an amount of 10 ppm or below and an alkali metal ion and/or an alkaline earth metal ion in an amount of 1 ppm or below; and a process for preparing the above (co)polycarbonate composition by the melt transesterification process from a dihydroxy compound such as bisphenol A and a carbonic diester such as diphenyl carbonate with a nitrogen-containing basic compound (a), and/or, a compound (b) containing an element selected from the group consisting of elements belonging to Groups I, II, IV and V of the periodic table as a catalyst.

  一种(共)聚碳酸酯组合物，主要包括极限粘度[η]为 0.2 至 1.0 dl/g，末端羟基的含量为 20 摩尔%或以下（以(共)聚碳酸酯的所有末端基团为基准），且基本上不含任何可能由副反应形成的支链结构，其中氯（引起变色）的含量为 10 ppm 或以下，碱金属离子和/或碱土金属离子的含量为 1 ppm 或以下；以及一种通过熔融酯交换反应制备上述（共）聚碳酸酯组合物的工艺，该工艺由双酚 A 等二羟基化合物和碳酸二苯酯（如碳酸二苯酯）与含氮碱性化合物 (a) 和/或含有选自元素周期表 I、II、IV 和 V 族元素组成的元素的化合物 (b) 作为催化剂。
• BRANCHED POLYCARBONATE RESIN AND PROCESS FOR THE PREPARATION THEREOF
  申请人：IDEMITSU PETROCHEMICAL CO., LTD.

  公开号：EP1008608A1

  公开（公告）日：2000-06-14

  A branched polycarbonate resin which is prepared by using a tetrahydric phenol having a specific structure as the branching agent, has a branching agent content [branching agent /(dihydric phenol + terminating agent + branching agent) x 100] of 0.05 to 0.5 mole % and satisfies the relationship: y ≥ 11x + 0.5 (wherein x is the branching agent content of the resin; and y is the melt tension (g) thereof at 280°C); and a process for preparing a branched polycarbonate from a dihydric phenol, phosgene or a carbonic acid ester, a branching agent and an terminating agent, characterized by preparing an oligocarbonate, particularly one having chloroformate groups without the addition of the terminating agent, and then reacting the oligocarbonate with the dihydric phenol and the terminating agent. This process can provide a branched polycarbonate which is lowered in the branching agent content, exhibits a high melt tension and good melt characteristics, and can be stably molded through blow molding, extrusion, vacuum forming and so on.

  一种用具有特定结构的四氢苯酚作为支化剂制备的支化聚碳酸酯树脂，其支化剂含量[支化剂/(二氢苯酚+终止剂+支化剂)×100]为 0.05 至 0.5 摩尔%，并满足以下关系式：y ≥ 11x + 0.5(其中 x 为树脂中的支化剂含量；y 为 280℃时的熔体张力(g))；以及一种用二元酚、光气或碳酸酯、支化剂和终止剂制备支化聚碳酸酯的工艺，其特征在于制备低碳酸酯，特别是不添加终止剂的具有氯甲酸酯基团的低碳酸酯，然后使低碳酸酯与二元酚和终止剂反应。该工艺可提供一种支化聚碳酸酯，其支化剂含量较低，具有较高的熔体张力和良好的熔体特性，可通过吹塑、挤出、真空成型等方式稳定成型。