| 摘要 |
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)xCl3-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'kSiCl4-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 (>70C) in a hydrocarbon diluent medium. ^ EFFECT: increased output of the reactor. ^ 4 cl, 7 ex, 1 tbl |
