Inorganica Chimica Acta p. 100 - 111 (2015)
Update date:2022-07-31
Topics:
Elagab, Hamdi Ali
Alt, Helmut G.
A series of 36 complexes of 1,2-bis(benzimidazolyl, benzothiazolyl and benzoxazolyl)benzene compounds with Ti(IV), Zr(IV) and V(III) were synthesized and characterized. After activation with methylaluminoxane (MAO), they showed variable activities towards ethylene polymerization. Parameters like the steric conditions and the number and nature of the hetero atoms at the precatalyst molecule, the concentration of the cocatalyst MAO, the nature of the transition metal and the reaction temperature have a strong influence on the performance of the corresponding catalysts. The polymerization activity of the catalyst system [1,2-bis(benzimidazolyl)benzene zirconium tetrachloride] 20/MAO was investigated under various polymerization conditions. Studies of structure-property relationships allowed the optimization of catalysts. Bimodal or multimodal resins indicate the existence of more than one active site in the polymerization reaction in one type of homogeneous catalyst.
View MoreNanjing Chemzam Pharmtech Co., Ltd.
Contact:+86-25-86462165,+86-13915979898
Address:C5-1,6 Maiyue Road,Maigaoqiao,Nanjing,Jiangsu,China
Shanghai PotentPharm Science and Technology Co.,Ltd
Contact:86-021-51969655
Address:Unit B, Building 18, No.300, Chuantu Rd,Pudong District, Shanghai 201202, China
Shanghai Egoal Chemical Co.,Ltd
Contact:+86-21-50333091
Address:Yangming Garden Square 3,YangGao North Road 1188, Pudong New District, Shanghai
Xinjiang Zhongtai Chemical Co., Ltd.
Contact:+86-991-8788172
Address:NO.78 XISHAN RD.URUMQI,CHINA
SHIJIAZHUANG CHENSHI IMPORT AND EXPORT CO.,LTD
Contact:+86-311-89871056
Address:RM2017 BUILDING CTIANSHAN GALAXY PLAZA,NO168 CHANGJIANG ROAD,GAOXIN DISTRICT,SHIJIAZHUANG CITY, HEBEI,CHINA
Doi:10.1016/j.tet.2007.07.021
(2007)Doi:10.1002/jlcr.1129
(2006)Doi:10.1248/cpb.32.4608
(1984)Doi:10.1016/j.tetlet.2004.02.153
(2004)Doi:10.1016/S0040-4020(01)91529-7
(1984)Doi:10.1039/b704967f
(2007)