Solid catalyst component for olefin polymerization
View Patent ↗A solid catalyst component for olefin polymerization comprising titanium, magnesium and a compound of the general formula (I) wherein R 1 and R 2 are independently a C 3 straight or branched hydrocarbon group, R 3 is hydrogen or a C 1-4 straight hydrocarbon group, R 4 is a C 1-4 straight or branched hydrocarbon group or a C 3-4 aliphatic cyclic hydrocarbon group when R 3 is hydrogen, R 4 is the same C 1-4 straight hydrocarbon group as R 3 when R 3 is a C 1-4 straight hydrocarbon group, and n is an integer of 1 to 10. A catalyst for olefin polymerization, containing this catalyst component, obtains a high activity with high stereospecificity.
1. A solid catalyst component for olefin polymerization comprising titanium, magnesium and a compound of the general formula (I);
wherein R 1 and R 2 are independently a C 3 straight or branched hydrocarbon group, R 3 is hydrogen, R 4 is a C 1-4 straight or branched hydrocarbon group, and n is an integer of 1 to 10.
2. A catalyst for olefin polymerization comprising,
(A) the solid catalyst component for olefin polymerization of claim 1 , and
(B) an organic aluminium compound.
3. A catalyst for olefin polymerization of claim 2 , wherein the catalyst further comprises an electron donor (C).
4. A catalyst for olefin polymerization of claim 3 , wherein the electron donor is an organic silicon compound.
5. A solid catalyst component for olefin polymerization of claim 1 , wherein n is 1, R 3 is hydrogen, and R 4 is methyl or i-propyl in the general formula (I).
6. A method of polymerizing olefins comprising polymerizing by contacting an olefin with a catalytically effective amount of the catalyst of claim 2 .
7. A method of producing a solid catalyst component for olefin polymerization comprising bringing at least a titanium compound, a magnesium compound and a compound of the general formula (I) into contact with each other at 120° C. to 150° C.;
wherein R 1 and R 2 are independently a C 3 straight or branched hydrocarbon group, R 3 is hydrogen, R 4 is a C 1-4 straight or branched hydrocarbon group, and n is an integer of 1 to 10.
8. A method of producing a solid catalyst component for olefin polymerization of claim 7 , wherein the method further comprises washing the component obtained by the contact with an inert solvent at 100° C. to 150° C.