US 12,258,432 B2
Hybrid supported metallocene catalyst and method for preparing polypropylene using the same
Sanghoon Lee, Daejeon (KR); Sangeun An, Daejeon (KR); Seok Hwan Kim, Daejeon (KR); Daesik Hong, Daejeon (KR); and Donghyeon Gwon, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/438,185
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Aug. 14, 2020, PCT No. PCT/KR2020/095104
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2021/034170, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 10-2019-0100466 (KR), filed on Aug. 16, 2019; and application No. 10-2020-0102000 (KR), filed on Aug. 13, 2020.
Prior Publication US 2022/0056163 A1, Feb. 24, 2022
Int. Cl. C08F 4/6592 (2006.01); C08F 2/38 (2006.01); C08F 4/646 (2006.01); C08F 110/06 (2006.01)
CPC C08F 4/6592 (2013.01) [C08F 2/38 (2013.01); C08F 4/646 (2013.01); C08F 110/06 (2013.01)] 17 Claims
 
1. A hybrid supported metallocene catalyst comprising at least one first metallocene compound selected from compounds represented by Chemical Formula 1; at least one second metallocene compound selected from compounds represented by Chemical Formula 3; at least one cocatalyst selected from the group consisting of compounds represented by Chemical Formulas 4 to 6; and a support for supporting the first and second metallocene compounds:

OG Complex Work Unit Chemistry
in Chemical Formula 1,
M1 is a Group 4 transition metal;
A1 is silicon;
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, C7-40 aryloxyalkyl, C6-40 aryl, C7-40 alkylaryl, or C7-40 arylalkyl;
X1 and X2 are the same as or different from each other, and are each independently halogen, C1-20 alkyl, C2-20 alkenyl, C6-40 aryl, a nitro group, an amido group, C1-20 alkylsilyl, C1-20 alkoxy, or C1-20 sulfonate group; and
C1 and C2 are the same as or different from each other, and are each independently represented by either Chemical Formula 2a or Chemical Formula 2b, provided that the case where both C1 and C2 are Chemical Formula 2b is excluded;

OG Complex Work Unit Chemistry
in Chemical Formulae 2a and 2b,
R1 to R17 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, C6-40 aryl, C7-40 alkylaryl, or C7-40 arylalkyl; or two or more neighboring groups of the R10 to R17 are connected to each other to form a substituted or unsubstituted aliphatic or aromatic ring;
· represents a site for binding to A1; and custom character represents a site for binding to M1,

OG Complex Work Unit Chemistry
in Chemical Formula 3,
M2 is a Group 4 transition metal;
A2 is carbon, silicon, or germanium;
X3 and X4 are the same as or different from each other and are each independently halogen;
R31 and R35 are the same as or different from each other, and are each independently phenyl substituted with C3-6 branched alkyl;
R32 to R34 and R36 to R38 are the same as or different from each other, and are each independently hydrogen, halogen, C1-20 alkyl, C2-20 alkenyl, C1-20 alkylsilyl, C1-20 silylalkyl, C1-20 alkoxysilyl, C1-20 ether, C1-20 silyl ether, C1-20 alkoxy, C6-40 aryl, C7-20 alkylaryl, or C7-20 arylalkyl, and
Q3 and Q4 are the same as each other and are each C2-4 linear alkyl,
—[Al(R41)—O]c—   [Chemical Formula 4]
in Chemical Formula 4,
each R41 is independently halogen, C1-20 alkyl or C1-20 haloalkyl; and
c is an integer of 2 or more,
D(R51)3   [Chemical Formula 5]
in Chemical Formula 5,
D is aluminum or boron; and
each R51 is independently hydrogen, halogen, C1-20 hydrocarbyl or halogen-substituted C1-20 hydrocarbyl,
[L-H]+[Q(E)4] or [L]+[Q(E)4]   [Chemical Formula 6]
in Chemical Formula 6,
L is a neutral or cationic Lewis base;
[L-H]+ is a Bronsted acid;
Q is B3+ or Al3+; and
each E is independently C6-40 aryl or C1-20 alkyl, wherein the C6-40 aryl or the C1-20 alkyl is unsubstituted or substituted one or more substituents selected from the group consisting of halogen, C1-20 alkyl, C1-20 alkoxy, and C6-40 aryloxy,
wherein the first metallocene compound and the second metallocene compound are supported in a molar ratio of 1:2 to 1:5.