Synthesis of Titanatranes Containing Bis(aryloxo)-(alkoxo)amines and their Use in Catalysis for Ethylene Polymerization |
| |
Authors: | Sudhakar Padmanabhan Wei Wang Shohei Katao Kotohiro Nomura |
| |
Affiliation: | Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0101, Japan |
| |
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. |
| |
Keywords: | aluminum ethylene polymerization titanium titanium complex |
|
|