Supported catalyst for propylene polymerization and method for producing polypropylene resin using same
A supported catalyst, propylene polymerization technology, applied in chemical instruments and methods, organic chemistry, metallocene, etc., can solve problems such as scaling, achieve simple impact resistance, and relieve scaling problems.
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[0208] Another embodiment of the present invention provides a method of preparing a polypropylene resin comprising: the step of polymerizing propylene in the presence of the load catalyst.
[0209] According to an embodiment of the invention, crystalline polypropylene and rubber phase polypropylene can be simultaneously formed by the polymerization. This is because the first transition metal compound that contributes to the preparation of crystalline polypropylene is used and a supported catalyst for the preparation of rubber phase polypropylene is used, and in the case of using the load catalyst, The above two phases of polypropylene were simultaneously formed by the polymerization of one step.
[0210] According to an embodiment of the present invention, the rubber phase polypropylene may comprise a rubber phase propylene homopolymer and a rubber phase propylene copolymer formed in a polymerization of the propylene polymerization step. At least one of the groups. In the preparat...
preparation example 1
[0221] Preparation 1: Transition metal compound (tetramethylcyclopentadienyl dimethylsilyl 2-methyl-4- (4-t-but Base) fluidthylxyl dichloride (Tetramethylcyclopentadienyl Dimethylsilyl 2-Methyl-4- (4- TERT-Butylphenyl) Synthesis of Indenyl Zr Dichloride))))
[0222] [First step: Synthesis of Dimethyltetramethylcyclopeneethylttramethylcyclopentadadienyl chlorosilane]
[0223] 600 ml of tetrahydrofuran and 50 g of tetramethyl cyclopentadiene were added to a 2L flask, and 170 ml of n-butyllithium (N-Butyllithium; N-Buli, 2.5m) was slowly added dropwise under a nitrogen atmosphere and -10 ° C. After hexane solution, the reaction was carried out at normal temperature for 12 hours to obtain a reaction solution. After the temperature of the reaction solution was again reduced to -10 ° C, 170 g of dimethyl dichlorosily was added, and then the reaction was carried out at normal temperature for 12 hours, followed by vacuum drying to obtain a solid reactant. After the solid reactant was a...
preparation example 2
[0232] Preparation 2: Transition metal compound ((dimethylane) bis (2-methyl-4-phenylcyl) diachloride (Dimethylsilylene) BI (2-Methyl-4-Phenylindenyl) Zirconium Dichloride
[0233] As the "transition metal compound -2 '" prepared from S-PCI (dimethylsily-4-phenylcyl) dichloride. The chemical structure of the transition metal compound-2 is shown in Table 1 below.
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