Patent ID: 11905345
Assignee: LG CHEM, LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 8:
9. A method for preparing the polyethylene according to claim 1, comprising a step of polymerizing ethylene in the presence of at least one first metallocene compound represented by the following Chemical Formula 1; and at least one second metallocene compound selected from the compounds represented by the following Chemical Formula 3:, in Chemical Formula 1,
Q1 and Q2 are the same as or different from each other, and are each independently hydrogen, halogen, C1-20 alkyl, C2-20 alkenyl, C2-20 alkoxyalkyl, C6-20 aryl, C7-40 alkylaryl, or C7-40 arylalkyl;
A1 is carbon, silicon, or germanium;
M1 is a Group 4 transition metal;
X1 and X2 are the same as or different from each other, and are each independently halogen, C1-20 alkyl, C2-20 alkenyl, C6-20 aryl, a nitro group, an amido group, C1-20 alkylsilyl, C1-20 alkoxy, or a C1-20 sulfonate group; and
one of C1 and C2 is represented by the following Chemical Formula 2a or 2b, and the other is represented by the following Chemical Formula 2c, 2d or 2e;, , , , , in Chemical Formulae 2a, 2b, 2c, 2d and 2e, R1 to R31 and R1′ to R13′ are the same as or different from each other, and are each independently hydrogen, halogen, C1-20 alkyl, C1-20 haloalkyl, C2-20 alkenyl, C1-20 alkylsilyl, C1-20 silylalkyl, C1-20 alkoxysilyl, C1-20 alkoxy, C6-20 aryl, C7-40 alkylaryl, or C7-40 arylalkyl, provided that at least one of R9 to R13 and R1′ to R13′ is C1-20 haloalkyl, or
two or more R14 to R31 that are adjacent to each other are connected with each other to form a C6-20 aliphatic or aromatic ring unsubstituted or substituted with a C1-10 hydrocarbyl group;
• represents a site of binding to A1; and
* represents a site of binding to M1;, in Chemical Formula 3,
at least one of R32 to R39 is —(CH2)n—OR, wherein R is C1-6 linear or branched alkyl and n is an integer of 2 to 6;
the rest of R32 to R39 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen, halogen, C1-20 alkyl, C2-20 alkenyl, C6-20 aryl, C7-40 alkylaryl, and C7-40 arylalkyl, or two or more of R32 to R39 that are adjacent to each other are connected with each other to form a C6-20 aliphatic or aromatic ring unsubstituted or substituted with a C1-10 hydrocarbyl group;
Q3 and Q4 are the same as or different from each other, and are each independently hydrogen, halogen, C1-20 alkyl, C2-20 alkenyl, C2-20 alkoxyalkyl, C6-20 aryl, C7-40 alkylaryl, or C7-40 arylalkyl;
A2 is carbon, silicon, or germanium;
M2 is a Group 4 transition metal;
X3 and X4 are the same as or different from each other, and are each independently halogen, C1-20 alkyl, C2-20 alkenyl, C6-20 aryl, a nitro group, an amido group, C1-20 alkylsilyl, C1-20 alkoxy, or a C1-20 sulfonate group; and
m is an integer of 0 or 1.