کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5185311 | 1381074 | 2010 | 4 صفحه PDF | دانلود رایگان |
Several non-metallocene-type titanium(IV) complexes containing phenoxy-phosphine or thiophenoxy-phosphine ligands of type, (2-R1-4-R2-6-PPh2-C6H2X)2TiCl2 (2a: XÂ =Â O, R1Â =Â R2Â =Â t-Bu; 2b: XÂ =Â O, R1Â =Â R2Â =Â cumyl; 2c: XÂ =Â S, R1Â =Â SiMe3, R2Â =Â H) have been synthesized by treating TiCl4 with the corresponding ligands 2-R1-4-R2-6-PPh2-C6H2XH in the presence of n-BuLi. The complexes 2a-c were investigated as the catalysts for ethylene with 1-hexene and/or polar alkenes copolymerizations. The catalytic activity and the comonomer incorporation were highly dependent upon catalyst and reaction conditions employed. Among these complexes, 2a can not only promote ethylene/1-hexene living copolymerization at room temperature, but also can utilize ethylene with methyl 10-undecenoate copolymerization.
Journal: Polymer - Volume 51, Issue 19, 3 September 2010, Pages 4336-4339