Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate 四(3,5-二(三氟甲基)苯基)硼酸钠
规格: 97%
聚烯烃助催化剂和给电子体
聚烯烃是一类产量最大且应用最广的高分子材料，一般是烯烃单体在催化体系的作用下聚合制得聚烯烃。众所周知，合成高端聚烯烃的关键在于选择合适的催化体系，迄今工业上应用最多为负载型催化剂，一般有如下组分：主催化剂、助催化剂、给电子体和载体。其中助催化剂是催化剂的辅助成分，本身没有活性，但是可以改变主催化剂的物理结构和化合形态，因此可以改善催化剂的性能。给电子体的作用主要表现在：改变催化剂的活性，影响聚丙烯的等规度和结晶度，控制聚合物的分子量、分子量分布以及聚合物的其他性能。
助催化剂：目前主要的茂金属催化剂助剂有两类：一类是烷基铝氧烷(MAO)；另一类是有机硼化合物。有机硼化合物的发现不仅提高催化剂的活性，而且也解决了MAO用量多成本高的问题。在反应过程中，有机硼化物的非配位阴离子可与阳离子活性中心形成离子对，从而起到稳定阳离子活性中心的作用。
给电子体：给电子体分为内给电子体(internal donor Di)和外给电子体(external donor De)，前者指在固体催化剂制备过程中加入，后者则是在聚合过程中原位加入，二者协同作用。最常用的给电子体有芳香酯类、醚类、胺类和烷硅类化合物。近年来，以1,3-二醚类化合物为内给电子体合成了新一代Ziegler-Natta载体型高效催化剂，这种催化剂的特性之一是无需添加外给电子体的情况下活性依然很高，得到高等规度的聚丙烯。
产品应用
在乙烯和1-己烯的聚合过程中，分别添加不同助催化剂进行对比(见下图，Journal of molecular catalysis. 2015, 29, 3)，其中[Ph3C][B(C6F5)4]和[HNMe2Ph][B(C6F5)4]表现出较好的催化活性，得到的聚烯烃分子量分布更窄，密度在0.91 - 0.92 g/mL之间，属于茂金属线型低密度聚乙烯(mLLDPE)范畴，使材料表现出更优异的性能。
研峰科技能够提供聚烯烃助催化剂和给电子体的一系列产品，对提高催化活性，改进聚烯烃均聚度、等规度等指标上发挥着至关重要作用。该项目于2018年立项，具备公斤级到吨级的生产供应能力，还可以根据客户的需要进行定制。
| Chemical Name | Sodium Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate |
|---|---|
| CAS Number | 79060-88-1 |
| Alfabeta Name | SODIUMTETRAKISBISTRIFLUOROMETHYLPHENYLBORATE 35[]()--, |
| MDL Number | MFCD00043323 |
| Synonym | Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {} {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {} {} {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {} {} {} {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate {} {} {} {} {} {} {} {} {} {} {} {LY} Sodium tetrakis(3,5-bis(trifluoromethyl)phen |
| PubChem Substance ID | 125307967 |
| Beilstein Registry Number | 5474788 |
| Chemical Name Translation | 四(3,5-二(三氟甲基)苯基)硼酸钠 |
| Reaxys-RN | 5474788 |
| LabNetwork Molecule ID | LN00119950 |
| Canonical SMILES | FC(C1=CC(C(F)(F)F)=CC([B-](C2=CC(C(F)(F)F)=CC(C(F)(F)F)=C2)(C3=CC(C(F)(F)F)=CC(C(F)(F)F)=C3)C4=CC(C(F)(F)F)=CC(C(F)(F)F)=C4)=C1)(F)F.[Na+] |
| Warnings | IRRITANT |
|---|---|
| WGK Germany | 3 |
| Personal Protective Equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
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| Storage condition | Store at room temperature, keep dry and cool {LY} Store at room temperature, keep dry and cool {} {LY} Store at room temperature, keep dry and cool {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store |
化学属性
| Mol. Formula | C32H12BF24Na |
|---|---|
| Mol. Weight | 886.2 |
| Melting Point | 310 °C |
| TSCA | No |
| Density | 1.0 |
*以上化合物性质及应用等信息仅供参考
