CATALYST AND METHOD OF OBTAINING ULTRA-HIGH MOLECULAR POLYETHYLENE USING THIS CATALYST Russian patent published in 2009 - IPC C08F4/02 C08F2/18 C08F10/02 C08F4/685 C08F4/654 C08F4/656 

FIELD: chemistry.

SUBSTANCE: present invention pertains to the method of obtaining ultra-high molecular polyethylene using Ziegler type catalyst, containing a transition metal compound on a magnesium-containing carrier. The described catalyst for obtaining ultra-high molecular polyethylene contains a vanadium compound (VCI₄, VOCI₃, V(OR)_xCl_3-x) on a magnesium-containing carrier, which is obtained from reaction of a solution of an organo-magnesium compound containing: Mg(C₆H₅)₂n MgCl₂ mR₂O, where n=0.37-0.7, m=2, R₂O is simple ether where R=i-Am, n-Bu, with a product of the reaction of alkylchloro silane containing: R'_kSiCl_4-k, where R is an alkyl or phenyl, k=0, 1, 2 and silicon tetraalkoxide Si(OEt)₄. The organo-magnesium compound contains dialkylaromatic ester D. The ultra-high molecular polyethylene is obtained as a suspension in a medium of a hydrocarbon diluent using the catalyst described above, together with an organo-aluminium cocatalyst at high polymerisation temperatures (>70°C) in a hydrocarbon diluent medium.

EFFECT: increased output of the reactor.

4 cl, 7 ex, 1 tbl