紫外线吸收剂 VSU | 23949-66-8

• 物质功能分类: 催化剂及助剂 - 紫外线吸收剂
• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 中文名称: 紫外线吸收剂 VSU
• 中文别名: 紫外线吸收剂VSU；N-(2-乙氧基苯基)-N'-(2-乙苯基)-乙二酰胺；N-(2-乙氧基苯基)-N'-(4-乙基苯基)-乙二酰胺；N-(2-乙氧基苯基)-N"-(4-乙基苯基)-乙二酰胺
• 英文名称: N-(2-ethoxyphenyl)-N'-(2-ethylphenyl)-ethanediamide
• 英文别名: N-(2-ethoxyphenyl)-N'-(4-ethylphenyl)glyoxamide；sanduvor VSU；2-ethoxy-2'-ethyloxanilide；N-(2-ethoxy-phenyl)-N'-(2-ethyl-phenyl)-ethanediamide；N-(2-ethoxyphenyl)-N'-(2-ethylphenyl)oxamide；Ethanediamide, N-(2-ethoxyphenyl)-N'-(2-ethylphenyl)-；N'-(2-ethoxyphenyl)-N-(2-ethylphenyl)oxamide
• CAS: 23949-66-8
• 化学式: C₁₈H₂₀N₂O₃
• mdl: MFCD08353320
• 分子量: 312.368
• InChiKey: YIMHRDBSVCPJOV-UHFFFAOYSA-N

物化性质

• 沸点：
  >400 °C
• 密度：
  1.216±0.06 g/cm3(Predicted)
• LogP：
  4.9 at 25℃
• 物理描述：
  OtherSolid

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  23
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.222
• 拓扑面积：
  67.4
• 氢给体数：
  2
• 氢受体数：
  3

制备方法与用途

化学性质

紫外线吸收剂 VSU 是一种草酰苯胺类紫外线吸收剂，适用于极性和酸性体系树脂，能够有效吸收 UVB 波段的紫外线（250-350nm）。单独使用或与抗氧化剂（如受阻酚和亚磷酸酯）及低碱性 HALS 稳定剂结合使用时，紫外线吸收剂 VSU 能展现出卓越的协同效应。建议用量为 0.1% 至 1.0%。

用途

N-(2-乙氧基苯基)-N'-(4-乙基苯基)乙二酰胺（UV-312；紫外线吸收剂 VSU）是一种草酰苯胺紫外线吸收剂，适用于多种聚合物和应用。在塑料中的应用包括聚酰胺、PVC（刚性和柔性）、聚酯（热塑性和热固性）、聚氨酯、粘合剂和密封剂。此外，该产品还广泛用于粉末和溶剂型涂料，并应用于汽车、工业和建筑涂料。

反应信息

• 作为产物：
  描述：

  Ethyl (2-ethylanilino)(oxo)acetate 、 氨基苯乙醚 在 sodium methylate 作用下， 反应 8.0h， 以90%的产率得到紫外线吸收剂 VSU
  参考文献：
  名称：

  一种紫外线吸收剂的制备方法

  摘要：

  本发明涉及一种紫外线吸收剂的制备方法，包括如下步骤：(1)草酰胺酯中间体合成：以草酰氯乙酯和邻乙基苯胺为原料，将草酰氯乙酯溶于溶剂中，升温搅拌，然后滴加邻乙基苯胺，反应结束后水洗脱溶，得到草酰胺酯中间体；(2)N‑(2‑乙氧基苯基)‑N'‑(4‑乙基苯基)‑乙二酰胺产品的合成：以邻氨基苯乙醚和步骤(1)中得到的草酰胺酯中间体为原料，以路易斯碱作为催化剂，升温搅拌，反应后在120‑170℃下，蒸出乙醇副产物，降温，倒入甲醇搅拌溶解，滤出不溶物，母液降温结晶，过滤，烘干得到产品。所述制备方法，工艺过程简单，对设备要求低；产品纯度高、收率高，三废少，利于环保，生产成本低，适合工业化生产。

  公开号：

  CN110343053B

文献信息

• PROPYLENE COPOLYMER, POLYPROPYLENE COMPOSITION AND USES THEREOF, TRANSITION METAL COMPOUND AND OLEFIN POLYMERIZATION CATALYST
  申请人：Ikenaga Shigenobu

  公开号：US20080312461A1

  公开（公告）日：2008-12-18

  A transition metal compound represented by the following formula (2a):

  一个以以下公式（2a）表示的过渡金属化合物：
• Inhibition of pulp and paper yellowing using nitroxides, hydroxylamines and other coadditives
  申请人：——

  公开号：US20020124980A1

  公开（公告）日：2002-09-12

  Pulps or papers, especially chemimechanical or thermomechanical pulps or papers, which still contain lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a hindered amine compound which preferably is a nitroxide, a hydroxylamine or an ammonium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents, metal chelating agents, sulfur containing stabilizers, metal salts and diene compounds. Combinations of nitroxides, hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-piperidin-4-ol and selected hydroxylamine salts are novel compounds and are surprisingly effective for this purpose.

  含有木质素的纸浆或纸张，特别是化学机械或热机械纸浆或纸张，如果它们含有有效的阻化胺化合物（最好是亚硝基自由基，羟胺或其铵盐），则具有增强的抗黄变性能。当与来自紫外线吸收剂、聚合抑制剂、亚硝基醇、荧光增白剂、金属螯合剂、含硫稳定剂、金属盐和二烯化合物等组成的一种或多种协同添加剂一起使用时，通常可以进一步提高其性能。亚硝基自由基、羟胺或其盐、苯并三唑或苯并酚类紫外线吸收剂和金属螯合剂的组合尤其有效。选择的1-氧基-2,2,6,6-四甲基哌啶-4-醇和选择的羟胺盐衍生物是新的化合物，出乎意料地有效。
• Propylene copolymer, polypropylene composition, and uses thereof, transition metal compounds and catalyst for olefin polymerization
  申请人：Ikenaga Shigenobu

  公开号：US20060276607A1

  公开（公告）日：2006-12-07

  The present invention provides a propylene/1-butene random copolymer (PBR) having excellent flexibility, impact resistance, heat resistance and low-temperature heat-seal properties, a polypropylene composition containg the copolymer, a sheet, film or stretched film comprising the composition and a composite film having a layer of the composition. The propylene/1-butene random copolymer contains 60 to 90 mol % of propylene units and 10 to 40 mol % of 1-butene units and has a triad isotacticity of not less than 85% and not more than 97.5%, a molecular weight distribution (Mw/Mn) of from 1 to 3, an intrinsic viscosity of from 0.1 to 12 dl/g, a melting point (Tm) of from 40 to 120° C., and satisfies the following relation 146 exp(−0.022M)≧ Tm ≧125 exp(−0.032M) wherein Tm represents a melting point and M (mol %) represents a content of 1-butene constituent units. The invention, further, provides a transition metal compound useful as an olefin polymerization catalyst and an olefin polymerization catalyst containing the transition metal compound. The transition metal compound is represented by the following formula (2a): wherein each of R 1 and R 3 is hydrogen, R 2 and R 4 are selected from a hydrocarbon group and silicon-containing group, R 5 to R 13 are selected from hydrogen, a hydrocarbon group and silicon-containing group, and adjacent substituent groups R 5 to R 12 may be linked to form a ring. R 14 is an aryl group, and R 13 and R 14 may be linked to form a ring. M is a Group 4 transition metal, Y is a carbon atom, Q is halogen, etc, and j is an integer of 1 to 4.

  本发明提供一种具有优异的柔韧性、抗冲击性、耐热性和低温热封性能的丙烯/1-丁烯随机共聚物（PBR），以及包含该共聚物的聚丙烯组合物、由该组合物制成的片材、薄膜或拉伸膜以及具有该组合物层的复合膜。该丙烯/1-丁烯随机共聚物含有60到90摩尔％的丙烯单元和10到40摩尔％的1-丁烯单元，三元等规度不小于85％且不大于97.5％，分子量分布（Mw/Mn）为1到3，固有粘度为0.1到12 dl/g，熔点（Tm）为40到120℃，并满足以下关系式146 exp（-0.022M）≥Tm≥125 exp（-0.032M），其中Tm表示熔点，M（摩尔％）表示1-丁烯组分单元的含量。本发明还提供一种过渡金属化合物，可用作烯烃聚合催化剂，以及含有该过渡金属化合物的烯烃聚合催化剂。该过渡金属化合物由以下式（2a）表示：其中R1和R3分别为氢，R2和R4选自烃基和含硅基，R5到R13选自氢、烃基和含硅基，相邻的取代基R5到R12可连接形成环。R14为芳基，R13和R14可连接形成环。M为4族过渡金属，Y为碳原子，Q为卤素等，j为1到4的整数。
• DIARYLETHENE COMPOUNDS AND USES THEREOF
  申请人：SWITCH MATERIALS, INC.

  公开号：US20160083398A1

  公开（公告）日：2016-03-24

  A compound according to Formula IA and IB, reversibly convertible under photochromic and electrochromic conditions between a ring-open isomer A and a ring-closed isomer B is provided. For substitutent groups, Z is N, O or S; each R 1 is independently selected from the group consisting of H, or halo; each R 2 is independently selected from the group consisting of H, halo, a polymer backbone, alkyl or aryl; or, when both R 2 together form —CH═CH— and form part of a polymer backbone; each R 3 is independently selected from the group consisting of H, halo, alkyl, alkoxy, thioalkyl or aryl; each R 4 is aryl; and each R 5 is independently selected from the group consisting of H, halo, alkyl, alkoxy, thioalkyl or aryl.

  本发明提供了一种按照式IA和IB的化合物，在光致变色和电致变色条件下，可在环开放异构体A和环闭合异构体B之间可逆地转化。对于取代基，Z为N、O或S；每个R1独立地选自H或卤素；每个R2独立地选自H、卤素、聚合物骨架、烷基或芳基；或者，当两个R2一起形成-CH═CH-并形成聚合物骨架的一部分时；每个R3独立地选自H、卤素、烷基、烷氧基、硫代烷基或芳基；每个R4为芳基；每个R5独立地选自H、卤素、烷基、烷氧基、硫代烷基或芳基。
• Piperidine derivatives, their production, and polymers photostabilized thereby
  申请人：SUMITOMO CHEMICAL COMPANY, LIMITED

  公开号：EP0141502A2

  公开（公告）日：1985-05-15

  The invention provides a piperidine derivative represented by the formula (I) wherein R2 and R3 represent hydrogen atoms or taken tooether form and each R is selected from a hydrogen atom and C1-C3 alkyl groups. These compounds are effective photostabilizers for high polymers even when used in combination with sulfur- containing antioxidants.

  本发明提供了一种由式 (I) 表示的哌啶衍生物 其中 R2 和 R3 代表氢原子或太醚形式 且每个 R 均选自氢原子和 C1-C3 烷基。这些化合物即使与含硫抗氧化剂结合使用，也是高聚物的有效光稳定剂。