Synthesis of Titanatranes Containing Bis(aryloxo)-(alkoxo)amines and their Use in Catalysis for Ethylene Polymerization |
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| Authors: | Sudhakar Padmanabhan Wei Wang Shohei Katao Kotohiro Nomura |
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| Institution: | Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0101, Japan |
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| Abstract: | Syntheses of titanatranes containing (O-2,4-Me2C6H2-6-CH2)2-{O(CH2)nCH2}]N3? (n = 1,2) have been explored. Catalytic activity for ethylene polymerization by Ti2(OiPr)2{(O-2,4-Me2C6H2-6-CH2)2(µ2-OCH2-CH2)]N}2 ( 1a ) - MAO catalyst increased at high temperature; the activity also increased upon addition of AlMe3. Ti(O- 2,6-iPr2C6H3){(O-2,4-Me2C6H2-6-CH2)2(OCH2CH2)]N} ( 1c ) showed higher activity than 1a under the same conditions. Ti{(O-2,4-Me2C6H2-6-CH2)2(HOCH2CH2CH2)]N}2 was isolated from the reaction of Ti(OiPr)4 with bis(2-hydroxy-3,5-dimethylbenzyl)-propanolamine; the structure was determined by X-ray crystallography. |
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| Keywords: | aluminum ethylene polymerization titanium titanium complex |
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