A study of molecular weight regulation in polyethylene by titanium diolate catalysts

被引：5
作者：
Mehta, Akshay [1 ]
Tembe, Gopal [2 ]
Parikh, Parimal [3 ]
Mehta, Girish [1 ]
机构：
[1] SV Natl Inst Technol, Dept Appl Chem, Surat 395007, India
[2] Reliance Ind Ltd, Reliance Technol Grp, Vadodara Mfg Div, Vadodara 391346, Gujarat, India
[3] SV Natl Inst Technol, Dept Chem Engn, Surat 395007, India
来源：
POLYMER INTERNATIONAL | 2014年 / 63卷 / 02期
关键词：
cyclohexanediol; synthesis; ethylaluminium sesquichloride; polyethylene; ETHYLENE POLYMERIZATION; OLEFIN POLYMERIZATION; METAL-COMPLEXES; LIGANDS; COBALT; IRON;
D O I：
10.1002/pi.4484
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of homogeneous titanium(IV) complexes derived from cyclohexanediol were synthesized and characterized. These catalysts, formulated as [Ti-(OO)(OR)(2)], [Ti-(OO)(OPrCl)-Cl-i] and [Ti-(OO)(2)], were found to be highly active in the polymerization of ethylene at high temperature in combination with ethylaluminium sesquichloride (Et3Al2Cl3, EASC) as co-catalyst. The resultant polyethylene had a low polydispersity index indicating the formation of single-site catalytic species with molecular weight in the range 639-1036 gmol(-1) which was analysed using H-1 NMR spectroscopy and found to be linear, suggesting that a chain transfer to the aluminium of EASC occurs. (c) 2013 Society of Chemical Industry
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收藏
页码：206 / 213
页数：8
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