Patent ID: 7879751

Claim:
A process for producing a solid catalyst component for olefin polymerization, comprising the following steps (1) and (4) in this order, or comprising the following step (1), one or more repetitions of a combination of the following steps (2) and (3) in this order, and the following step (4), in this order: (1) contacting a solid material containing magnesium atoms and hydrocarbyloxy groups, a halogenation compound and an internal electron donor and/or organic acid halide with one another, thereby obtaining a solid component; (2) washing the solid component with a hydrocarbon solvent; (3) contacting the washed solid component, a halogenation compound, and an internal electron donor and/or organic acid halide with one another; and (4) washing the solid component with a hydrocarbon solvent at 70° C. or higher four or more times; the solid catalyst component for olefin polymerization comprising titanium atoms, magnesium atoms, halogen atoms and hydrocarbyloxy groups, wherein the following filtrate contains titanium atoms in a concentration of 0.08 mg-Ti/ml-filtrate or lower, measured according to a method comprising the steps of (1) preparing a suspension of the solid catalyst component for olefin polymerization in heptane having a concentration of 0.1 g-solid catalyst component/ml-suspension; (2) heating the suspension at 70° C. for 30 minutes under stirring; (3) filtering the suspension, thereby obtaining a filtrate; and (4) measuring a concentration of titanium atoms contained in the filtrate.