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EP-3553093-B1 - TRANSITION METAL COMPOUND FOR OLEFIN POLYMERIZATION CATALYST AND OLEFIN POLYMERIZATION CATALYST COMPRISING THE SAME

EP3553093B1EP 3553093 B1EP3553093 B1EP 3553093B1EP-3553093-B1

Inventors

  • LEE, HYUN SEUNG
  • PARK, NA YOUNG
  • PARK, SEONG YEON
  • YANG, HEE JU
  • YOON, SUNG CHEOL

Dates

Publication Date
20260506
Application Date
20171206

Claims (8)

  1. A transition metal compound for an olefin polymerization catalyst, the transition metal compound represented by the following Chemical Formula A2: wherein in Chemical Formula A2, M is Ti, Q is Si, Y is N, X 1 and X 2 are each independently a halogen or a C 1-20 alkyl, R 1 and R 9 to R 11 are each independently a hydrogen atom, a substituted or unsubstituted C 1-20 alkyl, a substituted or unsubstituted C 2-20 alkenyl, a substituted or unsubstituted C 6-20 aryl, a substituted or unsubstituted C 1-20 alkyl C 6-20 aryl, a substituted or unsubstituted C 6-20 aryl C 1-20 alkyl, a substituted or unsubstituted C 1-20 heteroalkyl, a substituted or unsubstituted C 3-20 heteroaryl, or a substituted or unsubstituted C 1-20 silyl, and R 2 to R 8 are each a hydrogen atom.
  2. The transition metal compound of claim 1, wherein the Chemical Formula A2 is one of the following Chemical Formulas a-1 to a-12: wherein in each independent Chemical Formula a-1 to Chemical Formula a-12, M is Ti, and X 1 and X 2 are each independently a halogen or a C 1-20 alkyl.
  3. A transition metal compound for an olefin polymerization catalyst, wherein the transition metal compound is represented by one of the following Chemical Formulas b-4 to b-6, b-10 to b-12, b-16 to b-18 and b-22 to b-24: wherein in each independent Chemical Formula b-4 to b-6, b-10 to b-12, b-16 to b-18 and b22 to b-24, M is Ti, and X 1 and X 2 are each independently a halogen or a C 1-20 alkyl.
  4. An olefin polymerization catalyst comprising: a main catalyst compound including a compound represented by the following Chemical Formula A2; wherein in each independent Chemical Formula A2, M is Ti, Q is Si, Y is N, X 1 and X 2 are each independently a halogen or a C 1-20 alkyl, R 1 and R 9 to R 11 are each independently a hydrogen atom, a substituted or unsubstituted C 1-20 alkyl, a substituted or unsubstituted C 2-20 alkenyl, a substituted or unsubstituted C 6-20 aryl, a substituted or unsubstituted C 1-20 alkyl C 6-20 aryl, a substituted or unsubstituted C 6-20 aryl C 1-20 alkyl, a substituted or unsubstituted C 1-20 heteroalkyl, a substituted or unsubstituted C 3-20 heteroaryl, or a substituted or unsubstituted C 1-20 silyl, and R 2 to R 8 are each a hydrogen atom; and a co-catalyst compound.
  5. The olefin polymerization catalyst of claim 4, wherein a main catalyst compound further comprises a compound represented by the following Chemical Formula B2: wherein in Chemical Formula B2, M is Ti, Q is Si, Y is N, X 1 and X 2 are each independently a halogen or a C 1-20 alkyl, R 1 and R 9 to R 11 are each independently a hydrogen atom, a substituted or unsubstituted C 1-20 alkyl, a substituted or unsubstituted C 2-20 alkenyl, a substituted or unsubstituted C 6-20 aryl, a substituted or unsubstituted C 1-20 alkyl C 6-20 aryl, a substituted or unsubstituted C 6-20 aryl C 1-20 alkyl, a substituted or unsubstituted C 1-20 heteroalkyl, a substituted or unsubstituted C 3-20 heteroaryl, or a substituted or unsubstituted C 1-20 silyl, and R 2 to R 8 are each a hydrogen atom.
  6. The olefin polymerization catalyst of claim 4, wherein the co-catalyst compound includes one or more of a compound represented by the following Chemical Formula 1, a compound represented by the following Chemical Formula 2, and a compound represented by the following Chemical Formula 3: wherein in Chemical Formula 1, n is an integer of 2 or more, and R a is a hydrogen atom, a halogen radical, a C 1-20 hydrocarbyl radical, or a C 1-20 hydrocarbyl radical substituted with a halogen; wherein in Chemical Formula 2, D is aluminum (Al) or boron (B), and R b , R c , and R d are each independently a halogen radical, a C 1-20 hydrocarbyl radical, or a C 1-20 hydrocarbyl radical substituted with a halogen; <Chemical Formula 3> [L-H] + [Z(A) 4 ] - or [L] + [Z(A) 4 ] - wherein in Chemical Formula 3, L is a neutral or cationic Lewis base, [L-H] + and [L] + are a Brønsted acid, Z is a Group 13 element, and A is each independently a C 6-20 aryl or a C 1-20 alkyl in which one or more hydrogen atoms have been substituted with a halogen radical, a C 1-20 hydrocarbyl radical, a C 1-20 alkoxy radical, or a C 6-20 aryloxy radical or have not been substituted.
  7. The olefin polymerization catalyst of claim 5, which contains, on a molar basis, more of the compound of Chemical Formula A2 than it contains the compound of Chemical Formula B2.
  8. The olefin polymerization catalyst of claim 7, wherein the compound of Chemical Formula A2 and the compound of Chemical Formula B2 are in a 2 to 4: 1 molar ratio.

Description

[Technical Field] The present invention relates to a transition metal compound for an olefin polymerization catalyst, and an olefin polymerization catalyst containing the transition metal compound. [Background Art] A metallocene catalyst, which is a type of catalyst used for polymerizing olefins, is based on a compound in which a ligand such as a cyclopentadienyl group, an indenyl group, a cycloheptadienyl group, or the like is linked to a transition metal compound or a transition metal halide compound through a coordinate covalent bond, and the basic form thereof is a sandwich structure. The metallocene catalyst is a single-site catalyst containing the above-described metallocene compound and a co-catalyst such as methylaluminoxane or the like. The use of the metallocene catalyst for polymerization results in a polymer having a narrow molecular weight distribution and a uniform comonomer distribution, and the metallocene catalyst exhibits higher copolymerization activity than a Ziegler-Natta catalyst. However, since there are still many challenges in using the catalyst commercially, it is required to develop a catalyst having high activity and being highly capable of achieving copolymerization even at a high temperature of 100 °C or more and an economically feasible production technique. US 2016/244535 A1 relates to different transition metal compounds represented by the general formula TyCp'mMGnXq. WO 98/49212 A1 relates to random ethylene/alpha-olefin/diene monomer interpolymers with an alpha-olefin distribution that is more clustered than Bernoullian are prepared using group 4 metal constrained geometry complex catalyst and an activating cocatalyst, wherein the catalyst includes a fused ring indenyl derivative ligand. US 5 965 756 A discloses group 4 metal constrained geometry complexes comprising a fused ring indenyl derivative ligand, catalytic derivatives thereof, processes for preparing the same and their use as components of olefin polymerization catalysts. [Disclosure] [Technical Problem] One aspect of the present invention is to provide: a transition metal compound for an olefin polymerization catalyst; an olefin polymerization catalyst having high activity and being highly capable of achieving copolymerization even at a high temperature by containing the transition metal compound; and a polyolefin prepared using the olefin polymerization catalyst for polymerization thereof and thus having excellent physical properties such as low density, high molecular weight, and the like. Another aspect of the present invention is to provide a mixture of transition metal compounds that can lead to lower production costs for a given level of olefin polymerization performance. [Technical Solution] The invention is set out in the independent claims 1, 3 and 4. Further preferred embodiments of the invention are defined in dependent claims 2 and 5-8. The embodiments of the description which do not fall within the scope of said claims are provided for illustrative purposes only and do not form part of the present invention. While the claimed transitional metal compound of the invention as defined in the claims is represented by the Formula A2 and Formulas b-4 to b-6, b-10 to b-12, b-16 to b-18 and b-22 to b-24, the present specification also provides disclosure for a transition metal compound for an olefin polymerization catalyst represented by the following Chemical Formula A1 or Chemical Formula B1. (In each independent Chemical Formula A1 and Chemical Formula B1, n is 1 to 4, M is titanium (Ti), zirconium (Zr), or hafnium (Hf), Q is silicon (Si) or carbon (C), Y is nitrogen (N), phosphorus (P), oxygen (O), or sulfur (S), X1 and X2 are each independently a halogen, a C1-20 alkyl, a C2-20 alkenyl, a C2-20 alkynyl, a C6-20 aryl, a C1-20 alkyl C6-20 aryl, a C6-20 aryl C1-20 alkyl, a C1-20 alkylamido, a C6-20 arylamido, or a C1-20 alkylidene, and R1 to R10 are each independently a hydrogen atom, a substituted or unsubstituted C1-20 alkyl, a substituted or unsubstituted C2-20 alkenyl, a substituted or unsubstituted C6-20 aryl, a substituted or unsubstituted C1-20 alkyl C6-20 aryl, a substituted or unsubstituted C6-20 aryl C1-20 alkyl, a substituted or unsubstituted C1-20 heteroalkyl, a substituted or unsubstituted C3-20 heteroaryl, or a substituted or unsubstituted C1-20 silyl.) The Chemical Formula A1 may be the following Chemical Formula A2, which in fact corresponds to the invention as defined in the appended claim 1: (In Chemical Formula A2, M is Ti, Q is Si, Y is N, X1 and X2 are each independently a halogen or a C1-20 alkyl, R1 and R9 to R11 are each independently a hydrogen atom, a substituted or unsubstituted C1-20 alkyl, a substituted or unsubstituted C2-20 alkenyl, a substituted or unsubstituted C6-20 aryl, a substituted or unsubstituted C1-20 alkyl C6-20 aryl, a substituted or unsubstituted C6-20 aryl C1-20 alkyl, a substituted or unsubstituted C1-20 heteroalkyl, a substituted or unsubstituted C3-20 heteroa