TRIMERIZATION AND OLIGOMERIZATION OF OLEFINS USING COMPRISING CHROMIUM, MOLYBDENUM, AND TUNGSTEN SOURCES AND LIGAND CONTAINING AT LEAST ONE PHOSPHORUS, ARSENIC, OR ANTIMONY ATOM BOUND TO AT LEAST ONE (HETERO)HYDROCARBON GROUP Russian patent published in 2007 - IPC B01J31/18 B01J31/24 B01J31/34 C07C2/36 

FIELD: polymerization catalysts.

SUBSTANCE: supported olefin trimerization and oligomerization catalyst is characterized by molar productivity equal to 50% of that shown by the same but non-supported catalyst. Catalyst comprises: source of transition group 6 metal; ligand depicted by formula (R¹)(R²)X-Y-X(R³)(R⁴) or X(R¹)(R²)(R³), wherein X represents phosphorus, arsenic, or antimony atom, Y is linking group, and each of R¹, R², R³, R⁴, independently of each other, represents optionally substituted hydrocarbon group, optionally substituted heterohydrocarbon group, wherein each of the formulas has polar substituent, which is other than phosphane, arsane, or stibane group; and optionally activator. Polymerization of olefins or olefin blends is an integrated process in one or different reactors, in particular olefin monomer or olefin blend is brought into contact with above-described catalyst under trimerization conditions and then with additional catalyst suitable for olefin polymerization, which results in that trimerization products are incorporated into higher-molecular weight polymer. Process may be accomplished in a reaction circuit. Invention also claims supported α-olefin trimerization and polymerization catalyst comprising above-indicated components and optionally one or several olefin polymerization suitable catalysts.

EFFECT: excluded loss of catalyst activity in supported form.

36 cl, 25 ex