Catalyst component for olefin polymerization and method of preparation thereof

Catalyst component for olefin polymerization, comprising a reaction product of: (1) an adduct represented by the general formula (I): MgX 2 · m (R'OH) nE · · qH2O; (2) at least one titanium compound represented by the general formula (II): Ti (OR) 4-kXk; and (3) at least one electron donor compound and at least one electron donor compound b; wherein, in general formula (I), Formula ** ** X is Cl or Br; R 'is a C1-C4 alkyl; E is at least one o-alcoxibenzoato represented by the general formula (III): wherein R1 and R2 are independently chosen from C1-C12 linear or branched alkyl, C3-C10 cycloalkyl, C4-C10, C6-C10 aryl, alkaryl and C7-C10 C7-C10 aralkyl; m ranges from 1.0 to 5.0; n ranges from 0 to 0.5; q ranges from 0 to 0.8; in the general formula (II), Formula ** ** R is a C1-C20, X is a halogen and k is 0, 1, 2, 3 or 4; the at least one compound to electron donor is selected diol esters represented by the general formula (IV): wherein R1 and R2 are independently chosen from C1-C10 linear or branched alkyl, C3-C20 cycloalkylalkyl C4- C20, C6-C20 aryl and C7-C20 aralkyl, whose aryl ring or cycloalkyl ring is optionally further substituted by a substituent selected from halogen, C1-C6 alkyl and C1-C6; R3-R6 and R1-R2n are independently hydrogen, halogen, C1-C20 alkyl substituted or unsubstituted, linear or branched, C3-C20 cycloalkyl, C4-C20, C6-C20 aryl, alkaryl C7-C20, C7 C20, C2-C10 alkenyl, aryl C10-C20 condensed and ester group, each of R3-R6 and R1-R2n optionally comprise one or more heteroatoms as replacing a carbon atom or a hydrogen atom or both, being chosen such heteroatom N, O, S, Si, P and halogen, and one or more of R3-R6 and R1-R2n are optionally joined to form a ring; n is an integer ranging from 0 to 10; the at least one electron donor compound b is chosen diether compounds represented by the general formula (V): Formula ** **