Method for producing solid catalyst component for polymerization of olefin, solid catalyst component for polymerization of olefin, catalyst for polymerization of olefin, method for producing catalyst for polymerization of olefin and method for producing polymer ofolefin

A solid catalyst component for polymerization of an olefin, obtained by sequentially performing the following steps:

• (i) a first step of bringing one or two or more compounds selected from phthalic acid ester compounds (A) represented by the following general formula (1), a dialkoxymagnesium compound and a halogen-containing titanium compound into contact with each other, thereby obtaining a first contact product:
• (R1)kC6H4-k(COOR2)(COOR3) (1)
• wherein R1 represents an alkyl group having 1 to 8 carbon atoms or a halogen atom;
• R2 and R3 each represent an alkyl group having 1 to 12 carbon atoms and may be the same as or different from each other;
• and the number of the substituent R1, k, is 0, 1 or 2, and when k is 2, a plurality of R1 may be the same as or different from each other;
• (ii) a second step of further bringing the first contact product obtained in the step (i) and one or two or more compounds selected from diether compounds (B) represented by the following general formula (2) into contact with each other, thereby obtaining a second contact product, and then washing the obtained second contact product:
• wherein R4 to R9 each represent any of a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms and a phenyl group, and may be the same as or different from each other;
• and R10 and R11 each represent any of a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms and a phenyl group, and may be the same as or different from each other, or may be bonded to each other to form a ring;
• and
• (iii) a third step of bringing the washed second contact product and a halogen-containing titanium compound into contact with each other to obtain a contact product, then washing the obtained contact product, and further bringing the washed contact product, one or two or more compounds selected from phthalic acid ester compounds (A) represented by the above general formula (1) and a halogen-containing titanium compound into contact with each other, thereby obtaining a third contact product,
• wherein the solid catalyst component for polymerization of an olefin comprises titanium, magnesium, halogen and an internal electron-donating compound;
• the internal electron-donating compound comprises one or two or more compounds selected from phthalic acid ester compounds (A) represented by the following general formula (1):
• (R1)kC6H4-k(COOR2)(COOR3) (1)
• wherein R1 represents an alkyl group having 1 to 8 carbon atoms or a halogen atom;
• R2 and R3 each represent an alkyl group having 1 to 12 carbon atoms and may be the same as or different from each other;
• and the number of the substituent R1, k, is 0, 1 or 2, and when k is 2, each R1 may be the same as or different from each other, and one or two or more compounds selected from diether compounds (B) represented by the following general formula (2):
• wherein R4 to R9 each represent any of a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms and a phenyl group, and may be the same as or different from each other;
• and R10 and R11 each represent any of a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms and a phenyl group, and may be the same as or different from each other, or may be bonded to each other to form a ring;
• a total amount of the phthalic acid ester compounds (A) and the diether compounds (B) per g of the solid catalyst component for polymerization of an olefin is 0.5 to 1.2 mmol;
• and
• a ratio represented by the entire molar amount of the phthalic acid ester compounds (A)/the entire molar amount of the diether compounds (B) is 0.5 to 1.2.