Catalyst for polymerization of olefins comprising thienyl-substituted silanes

An olefin polymerization catalyst comprising a thienyl-substituted silane, wherein the catalyst is a product of a reaction of the following components:

• (A) a solid titanium catalyst component, wherein titanium, magnesium, and halogen are main components of the solid titanium catalyst component;
• (B) an aluminum alkyl compound component;
• and
• (C) an organosiloxane compound component comprising two thienyl substituents, selected from at least one of compounds represented by general formula (I) below:
• wherein R1 to R6 are the same or different, and are selected from hydrogen, halogen, a linear or branched C1-C20 alkyl, a C3-C20 cycloalkyl, a C6-C20 aryl, a C7-C20 alkylaryl, or a C7-C20 aralkyl;
• and two or more of R1 to R6 may be bonded with each other to form a saturated or unsaturated condensed ring structure which may be substituted by a group having the same definition as R1 to R6;
• R1 to R6 optionally contain one or more heteroatoms substituting carbon or hydrogen atoms or both, and the heteroatom is selected from nitrogen, oxygen, sulfur, silicon, phosphorus or a halogen atom;
• Ra and Rb are the same or different, and are selected from linear or branched C1-C4 alkyl;
• and
• a molar ratio of the components in the catalyst is 1:50-150:5-50, based on titanium:aluminum:silicon.