Catalyst component for olefin polymerization and a catalyst comprising the same

A catalyst component for olefin polymerization, comprising magnesium, titanium, at least one halogen, and at least one internal electron donor, wherein the at least one internal electron donor in the catalyst component is chosen from an α-cyanosuccinate compound of formula (I):

• wherein R1 and R2, which may be the same or different, are each chosen from hydrogen, C1-C14 linear alkyl, C3-C14 branched alkyl, C3-C10 cycloalkyl, C6-C10 aryl, C7-C10 alkaryl, and C7-C10 aralkyl groups;
• and R3 and R4, which may be the same or different, are each chosen from C1-C10 linear alkyl, C3-C10 branched alkyl, C3-C10 cycloalkyl, C6-C20 aryl, C7-C20 alkaryl, and C7-C20 aralkyl groups, and
• a combination of at least one α-cyanosuccinate compound of formula (I) and at least one monofunctional or difunctional compound E chosen from esters other than the α-cyanosuccinate compound of formula (I), ethers, ketones, ketals, amines, and silanes.