Abstract:
A catalytic composition is obtained by mixing at least one chromium compound with at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula M(RO)2-nXn, where RO is an aryloxy radical containing 6 to 80 carbon atoms, X is a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms and n is a whole number that can take values of 0 to 2, and with at least one aluminum compound selected from hydrocarbylaluminum compounds (tris(hydrocarbyl)-aluminum, chlorinated or brominated hydrocarbylaluminum compounds) and aluminoxanes. The catalytic composition can be used in an ethylene oligomerization process, in particular to produce 1-hexene.
Abstract:
A catalytic composition for oligomerizing ethylene, in particular to 1-hexene, is obtained by mixing at least one chromium carboxylate characterized in that it also contains a free carboxylic acid in a set proportion, with at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula M(RO)2-nXn in which RO is an aryloxy radical containing 6 to 80 carbon atoms, X is a halogen atom or a hydrocarbyl radical containing 1 to 30 carbon atoms and n is a whole number that can take the values 0 or 1, and with at least one hydrocarbylaluminum compound selected from the group formed by tris(hydrocarbyl)-aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.
Abstract translation:通过混合至少一种羧酸铬,其特征在于其还含有一定比例的游离羧酸,与至少一种选自以下的元素M的芳氧基化合物混合,得到用于使乙烯,特别是1-己烯低聚的催化组合物: 由镁,钙,锶和钡形成的基团,其通式为M(RO)2-n X X N,其中RO是含有6至80个碳的芳氧基 原子,X是卤素原子或含有1至30个碳原子的烃基,n是可以取0或1的整数,并且与至少一种烃基铝化合物选自由三(烃基) - 铝化合物,氯化或溴化烃基铝化合物和铝氧烷。