Synthesis of Tritertbutylphosphinimine Phenoxy Titanium Complexes and Their Catalytic Performance to Ethylene Polymerization

doi:10.6023/cjoc201801004

Chin. J. Org. Chem. ›› 2018, Vol. 38 ›› Issue (6): 1544-1548.DOI: 10.6023/cjoc201801004 Previous Articles Next Articles

Notes

三叔丁基膦亚胺苯氧钛配合物及其乙烯聚合性能

王铁石^a, 陈建军^b, 叶霖^a,c, 张爱英^a,c, 冯增国^a,c

a 北京理工大学材料学院北京 100081;
b 中国石油化工股份有限公司北京化工研究院燕山分院北京 102500;
c 北京市结构可控先进功能材料与绿色应用重点实验室北京 100081

收稿日期:2018-01-04 修回日期:2018-02-09 发布日期:2018-03-08
通讯作者: 冯增国,E-mail:sainfeng@bit.edu.cn E-mail:sainfeng@bit.edu.cn
基金资助:
中国石油化工股份有限公司技术开发项目（No.214002）资助项目.

Synthesis of Tritertbutylphosphinimine Phenoxy Titanium Complexes and Their Catalytic Performance to Ethylene Polymerization

Wang Tieshi^a, Chen Jianjun^b, Ye Lin^a,c, Zhang Aiying^a,c, Feng Zengguo^a,c

a School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081;
b Sinopec Yanshan Branch, Beijing Research Institute of Chemical Industry, Beijing 102500;
c Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081

Received:2018-01-04 Revised:2018-02-09 Published:2018-03-08
Contact: 10.6023/cjoc201801004 E-mail:sainfeng@bit.edu.cn
Supported by:
Project supported by the Technology Development Project of China Petroleum & Chemical Corporation (Sinopec) (No. 214002).

1. Synthesis of Tritertbutylphosphinimine Phenoxy Titanium Complexes and Their Catalytic Performance to Ethylene Polymerization.PDF(1435KB)

Abstract

Tritertbutylphosphinimine phenoxy titanium complexes (t-Bu₃)PNTi(OAr)Cl₂ [Ar=C₆H₅(4a), 2,6-Me₂C₆H₃ (4b), 2,6-i-Pr₂C₆H₃ (4c) and 2,6-t-Bu₂C₆H₃ (4d)] were synthesized via the reaction of corresponding substituted phenol lithium salts with tritertbutylphosphinimine trichloride titanium (3). The compounds were characterized by means of ¹H NMR, ¹³C NMR, ³¹P NMR spectroscopic and elemental analyses, and the molecular structures of 3, 4b and 4d were further confirmed by single-crystal X-ray diffraction analysis. When activated with methylaluminoxane (MAO), 4a~4d displayed not only high catalytic activities, but also increasing performances on ethylene polymerization with increasing the sterical hindrance of substituents. Furthermore, 4c depicted a good thermal stability, with which the polyethylene products of different molecular weights and molecular weight distributions can be obtained by tuning the polymerization conditions.

Key words: tritertbutylphosphinimine, substituted phenoxy, titanium complex, ethylene polymerization

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Wang Tieshi, Chen Jianjun, Ye Lin, Zhang Aiying, Feng Zengguo. Synthesis of Tritertbutylphosphinimine Phenoxy Titanium Complexes and Their Catalytic Performance to Ethylene Polymerization[J]. Chin. J. Org. Chem., 2018, 38(6): 1544-1548.

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三叔丁基膦亚胺苯氧钛配合物及其乙烯聚合性能

Synthesis of Tritertbutylphosphinimine Phenoxy Titanium Complexes and Their Catalytic Performance to Ethylene Polymerization

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