METHOD OF OBTAINING CATALYST FOR POLYMERISATION OF HIGHER α-OLEFINS AND METHOD OF OBTAINING ULTRA-HIGH MOLECULAR POLY-α-OLEFINS Russian patent published in 2009 - IPC C08F4/642 C08F10/14 

FIELD: chemistry.

SUBSTANCE: description is given of a method of obtaining a catalyst for polymerisation of α-olefins, involving reacting titanium chloride, diethylaluminium chloride and di-n-butyl ether, distinguished by that, the titanium chloride used is titanium tetrachloride, which is reacted with di-n-butyl ether in an inert hydrocarbon solvent, obtaining product I, and diethylaluminium chloride is reacted with di-n-butyl ether, obtaining product II. Product II is then added to product I and the obtained suspension is held at 90-100°C. Described also is a method of obtaining ultra-high molecular poly-α-olefins through polymerisation of α-olefins CnH_2n, where n=6-10, or their mixture, in the presence of the above described catalyst and dialkylaluminium chloride as a cocatalyst. The process is carried out in a monomer medium in static conditions.

EFFECT: increased catalyst activity, increased monomer conversion, increased average molecular weight of the obtained polymer.

6 cl, 1 tbl, 2 dwg, 14 ex