Hybrid supported metallocene catalyst, and polyolefin resin having excellent processability and using same
AssigneeHanwha Chemical Corporation
InventorsDong Wook Jeong, Dong Ok Kim, Ui Gab Joung
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Abstract
The present invention relates to a hybrid supported metallocene catalyst including at least first metallocene compound, at least one second metallocene compound, at least one cocatalyst compound, and a carrier, a preparation method therefor, and a polyolefin resin polymerized in the presence of the catalyst, wherein the second metallocene compound is a compound of a bridged structure having a ligand of an asymmetric structure, and the polyolefin resin has a density of 0.910 g/cm3 to 0.960 g/cm3, a molecular weight density in a unimodal distribution of 3 to 5, a melt index of 0.05 to 100 at 2.16 kg, and a melt flow rate of 20 to 40.
Claims11
A hybrid supported metallocene catalyst comprising:
- at least one first metallocene compound, at least one second metallocene compound, at least one cocatalyst compound selected from compound groups represented by Formulae 3 to 6, and a carrier,
- wherein the carrier comprises silica and has an average particle size of 10 microns to 250 microns, a microporous volume of 0.1 cc/g to 10 cc/g, a specific surface area of 1 m2/g to 1,000 m2/g, and a hydroxy group concentration of 0.1 mmol/g to 5 mmol/g,
- wherein, in Formula 3,
- AL is aluminum,
- R23 is each independently a halogen atom, a C1-C20 hydrocarbon group, or a C1-C20 hydrocarbon group substituted with halogen, and
- a is an integer of 2 or more,
- wherein, in Formula 4,
- Al is aluminum or boron, and
- R24 is each independently a halogen atom, a C1-C20 hydrocarbon group, a C1-C20 hydrocarbon group substituted with halogen, or a C1-C20 alkoxy group,
- [L1-H]+[Z1(A2)4]− [Formula 5]
- [L2]+[Z2(A3)4]− [Formula 6]
- wherein, in Formulae 5 and 6,
- L1 and L2 are each independently neutral or cationic Lewis acids,
- Z1 and Z2 are each independently group 13 elements of the periodic table of the elements, and
- A2 and A3 are each independently a substituted or unsubstituted C6-C20 aryl group or a substituted or unsubstituted C1-C20 alkyl group,
- wherein the first metallocene compound comprises at least one selected from the group consisting of [Indenyl(cyclopentadienyl)]zirconium dichloride, [2-methyl benzeindenyl (cyclopentadienyl)]zirconium dichloride, [Indenyl (tetramethylcyclopentadienyl)]zirconium dichloride, and [2-methyl benzeindenyl (tetramethylcyclopentadienyl)]zirconium dichloride, and
- wherein the second metallocene compound comprises at least one selected from the group consisting of dimethylsilyl(tetramethylcyclopentadienyl)(2-phenylindenyl)zirconium dichloride, dimethylsilyl {tetramethylcyclopentadienyl}{2-methyl-4-(4-tert-butylphenyl) indenyl}zirconium dichloride, and dimethylsilyl(2-methyl-4-phenylindenyl)(tetramethylcyclopentadienyl)zirconium dichloride.
Dependencies are inferred from the claim text.