Patent ID: 7514386

Claim:
A process for the (co)polymerization of olefins, comprising: polymerizing one or more of olefins in the presence of a catalytic system comprising: (a) a vanadium complex having the general formula L p VO q wherein: i) p is an integer ranging from 2 to 4; ii) q can have the values of 0 or 1; iii) the sum p+q must be 3 or 4; and iv) L is a halogen or a beta-dicarbonyl group; (b) a chlorinated aluminum alkyl having the general formula Al y R′″ 3y-z Cl z wherein: R′″ represents a linear or branched alkyl group, containing from 1 to 20 carbon atoms; “y”1 or 2; “z”is an integer ranging from 1 to 3y-1; and (c) a chlorinated promoter of formula (1) wherein: X represents a (—CO—) carbonyl or (—SO 2 —) sulfonyl group; n is 0 or 1; R' is an alkyl or alkylaryl group having from 1 to 20 carbon atoms, optionally halogen substituted; and R″=R′, H.