CATALYST COMPONENT, CATALYST PRECURSOR, AND MAGNESIUM HALIDE-BASED OLEFIN POLYMERIZATION CATALYST Russian patent published in 2006 - IPC C08F4/00 C08F4/654 C08F4/42 

FIELD: polymer production.

SUBSTANCE: invention relates to magnesium halide-based compositions, processes for preparation thereof and catalysts as well as to polymerization processes. Invention provides a component of magnesium halide-based olefin polymerization catalyst prepared from magnesium halide, solvent appropriate as electron donor, and electron-donor compound represented by linear or branched, substituted or unsubstituted aliphatic or aromatic alcohol having 1 to 25 carbon atoms, wherein magnesium halide is characterized by solubility in the solvent exceeds 0.7 mole/L and does fall under effect of increase in temperature up to boiling temperature. Catalyst precursor includes reaction product of the above-defined catalyst component and a second component including transition metal selected from group consisting of titanium, zirconium, hafnium, vanadium, and a combination thereof. Olefin polymerization catalyst disclosed includes reaction product of catalyst precursor with co-catalyst, namely alkylaluminum compound.

EFFECT: increased contend of magnesium in catalyst, increased solubility of catalyst, and reduced expenses on catalyst preparation in case of small amount of charge.

14 cl, 4 dg, 1 tbl