| 摘要 |
FIELD: chemistry.SUBSTANCE: catalytic system of ethylene in 1-hexene trimerisation includes a chromium (III) complex with a diphosphoric ligand of the general formula [CrCl[(PhP(1,2-CH)P(Ph)(1,2-CH)(R)](THF)], where R is a hydrocarbon radical or a heteroatom-containing hydrocarbon group, which is in a phenyl substituent in the ortho-position relative to one of the phosphorus atoms. A source of chromium (III) is represented by tris(tetrahydrofuran)chromium chloride, and an activator, representing a mixture of solutions of trimethylaluminium and partially hydrolysed trimethylaluminium in toluene or methylcyclohexane. The molar ratio of the catalytic system components [Cr] : partially hydrolysed trimethylaluminium : trimethylaluminium constitutes 0.03-1.09%:6.95-31.92%:67.39-92.81%.EFFECT: obtaining high selectivity by 1-hexene with the simultaneous reduction of the quantity of ethylene polymerisation byproducts in the process of trimerisation.2 cl, 2 tbl, 19 ex |
