Patent ID: 8268945

Claim:
A catalyst component, comprising at least one entity chosen from reaction products of (1) at least one magnesium complex obtained by dissolving at least one magnesium halide in at least one solvent system, wherein the at least one solvent system comprises at least one organic epoxy compound, at least one organic boron compound, at least one alcohol, and optionally at least one inert diluent, or comprises at least one organic epoxy compound, at least one organophosphorus compound, at least one alcohol, and optionally at least one inert diluent, wherein the at least one alcohol is chosen from optionally halogenated linear C 1 -C 10 alkyl alcohols, optionally halogenated branched C 3 -C 10 alkyl alcohols, optionally halogenated C 3 -C 10 cycloalkyl alcohols, optionally halogenated C 6 -C 20 aryl alcohols, optionally halogenated C 7 -C 20 aralkyl alcohols, and optionally halogenated C 7 -C 20 alkaryl alcohols; (2) at least one titanium compound of formula Ti(OR) a X b , wherein R, which may be the same or different, is chosen from C 1 -C 14 hydrocarbyl groups, X, which may be the same or different, is chosen from halogens, a is 0, 1, 2, 3 or 4, b is 1, 2, 3 or 4, and a+b=3 or 4; and (3) at least one organic silicon compound of formula (I): wherein R 1 is chosen from C 3 -C 20 aliphatic hydrocarbyl groups, and is substituted with at least one substituent chosen from halogens, C 1 -C 6 acyloxy groups, epoxy group, amino group, C 1 -C 6 alkylamino groups, di(C 1 -C 6 alkyl)amino groups, C 1 -C 6 alkoxy groups, glycidoxy group, and oxo group; R 2 , R 3 and R 4 , which may be the same or different, are each chosen from C 1 -C 10 aliphatic hydrocarbyl, C 3 -C 10 alicyclic hydrocarbyl, C 6 -C 10 aryl, C 7 -C 10 aralkyl, and C 7 -C 10 alkaryl groups, said reaction products being useful as catalyst components for ethylene polymerization.