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Synthesis and characterization of post-metallocene titanium complexes of bidentate dicarboxylic acids and studies on the effect of ring size on their polymerization activity at room temperature in aqueous emulsion
Journal of Polymer Research ( IF 2.8 ) Pub Date : 2020-03-26 , DOI: 10.1007/s10965-020-02067-8
Deepal Agrawal , Sudip K. De , P. K. Singh

The past decade has witnessed a remarkable growth in the polymerization reactions that are catalyzed by postmetallocene complexes. In this report, three early transition metal catalysts based on TiCl4 and aliphatic linear saturated dicarboxylic acids (Oxalic, Malonic and succinic acid) have been synthesized and characterized and their catalytic activity in emulsion polymerization have been studied. Upon treatment with NaBPh4, the complexes have been found to remain robust and highly active for the polymerization of Methylmethacrylate even at very low co-catalyst /catalyst ratios. Moreover, the polymers synthesized have been found to be isotactic rich.



中文翻译:

二齿二羧酸二茂金属钛后配合物的合成,表征及在室温下水乳液中环大小对其聚合活性的影响

在过去的十年中,由后茂金属络合物催化的聚合反应显着增长。在该报告中,合成并表征了三种基于TiCl 4和脂肪族线性饱和二元羧酸(草酸,丙二酸和琥珀酸)的早期过渡金属催化剂,并研究了它们在乳液聚合中的催化活性。用NaBPh 4处理后,发现即使在非常低的助催化剂/催化剂比例下配合物对于甲基丙烯酸甲酯的聚合仍保持稳健和高活性。此外,已经发现合成的聚合物是全同立构的。

更新日期:2020-04-21
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