CATALYST PREPARATION PROCESS AND ETHYLENE POLYMERIZATION AND ETHYLENE-ALPHA-OLEFIN COPOLYMERIZATION PROCESSES UTILIZING THIS CATALYST Russian patent published in 2005 - IPC

Abstract RU 2257263 C1

FIELD: polymerization catalysts.

SUBSTANCE: invention, in particular, relates to preparation of Ziegler-type catalyst comprising transition metal (titanium or vanadium) compound on magnesium-containing carrier. Carrier is prepared via interaction of organomagnesium compound-containing solution depicted by formula Mg(C6H5)2·nMgCl2·mR2O, wherein n=0.37-0.7, m=2, and R2O is ether with R = i-Am or n-Bu, with chlorination agent, namely XkSiCl4-k, wherein X is OR' or R', in which R can be C1-C4-alkyl or phenyl, and k=1-2. Above named polymerization and copolymerization process are carried out with catalyst of invention in combination with cocatalyst.

EFFECT: reduced size distribution range of polymers and enabled average particle size control.

3 cl, 1 tbl, 13 ex

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RU 2 257 263 C1

Authors

Nikitin V.E.

Mikenas T.B.

Zakharov V.A.

Dates

2005-07-27Published

2004-04-08Filed