新型钛金属烯烃聚合催化剂
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摘要
为了开发新型催化剂,我们合成了一系列磺酰胺类化合物内给电子体。我们将这些磺酰胺类化合物作为内给电子体,应用于齐格勒-纳塔催化剂的制备。我们发现,其中一些催化剂对丙烯聚合具有较高的活性和立体选择性。给电子体化合物的给电子能力显著地影响催化剂的性能。这些内电子给体化合物中的一例已经成功地实现了工业应用。以该化合物作为内给电子体的催化剂,在高压本体聚合条件下催化丙烯聚合的活性达到24KgPP/g-Cat·h-4,聚合产物的等规度达到98%。工业测试结果表明,该催化剂对现有装置有很好的适应性,长周期测试运行平稳。催化剂能够适用于不同牌号产品的开发,催化剂的平均活性达到32KgPP/g-Cat·h-1,聚合产物的等规度达到97%以上。催化剂的各项性能指标均能达到国内最好水平。
聚己内酯和聚丙交酯作为生物相容、可生物降解的新型材料在过去的十几年里得到了广泛的研究。我们合成了磺酰胺亚胺类配体化合物,并将其用于制备钛金属化合物。这些钛金属化合物对己内酯和丙交酯的开环聚合反应表现出了较高的催化活性,聚合产物具有较窄的分子量分布。化合物较好的热稳定性使其能够适应工业生产的高温条件。这些钛金属化合物催化丙交酯开环聚合表现出了可控聚合的特征。
In order to develop new types of catalysts, we have synthesized a series of internal electron donors based on sulfonyl amine framework. These sulfonyl amines were used as internal electron donors for the preparation of Ziegler-Natta catalysts. We found that some of these catalysts are highly active and stereospecific for the polymerization of propylene. The activity of these catalysts is dramatically influenced by the electronic capability of the substituents. Among these internal electron donors, one of which has been successfully used for industry applications. The catalyst with this internal electron donor exhibitted a high activity and a high stereospecificity, and had a good compatibility with the existing reaction apparatus.
Over the past decade the most extensively studied biocompatible and biodegradeable polyesters have been those derived from s-caprolactone and lactide. We have prepared several titanium complexes with sulfonamide-imine ligands and used for the ring-opening polymerization of LA and CL under bulk and solution polymerization conditions. These titanium catalysts showed a high catalytic activity to LA and CL, and allowed the well-controlled polymerizations of LA.
聚己内酯和聚丙交酯作为生物相容、可生物降解的新型材料在过去的十几年里得到了广泛的研究。我们合成了磺酰胺亚胺类配体化合物,并将其用于制备钛金属化合物。这些钛金属化合物对己内酯和丙交酯的开环聚合反应表现出了较高的催化活性,聚合产物具有较窄的分子量分布。化合物较好的热稳定性使其能够适应工业生产的高温条件。这些钛金属化合物催化丙交酯开环聚合表现出了可控聚合的特征。
In order to develop new types of catalysts, we have synthesized a series of internal electron donors based on sulfonyl amine framework. These sulfonyl amines were used as internal electron donors for the preparation of Ziegler-Natta catalysts. We found that some of these catalysts are highly active and stereospecific for the polymerization of propylene. The activity of these catalysts is dramatically influenced by the electronic capability of the substituents. Among these internal electron donors, one of which has been successfully used for industry applications. The catalyst with this internal electron donor exhibitted a high activity and a high stereospecificity, and had a good compatibility with the existing reaction apparatus.
Over the past decade the most extensively studied biocompatible and biodegradeable polyesters have been those derived from s-caprolactone and lactide. We have prepared several titanium complexes with sulfonamide-imine ligands and used for the ring-opening polymerization of LA and CL under bulk and solution polymerization conditions. These titanium catalysts showed a high catalytic activity to LA and CL, and allowed the well-controlled polymerizations of LA.
引文
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