Transition metal complexes, catalyst compositions including the same, and method for preparing polyolefins therewith

Patent metadata

Field	Value
Publication number	US-10800863-B2
Application number	US-201615744429-A
Country	US
Kind code	B2
Filing date	Oct 20, 2016
Priority date	Oct 21, 2015
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

The present invention relates to a transition metal complex that exhibits high activity in the polymerization reaction of olefin monomers and improved copolymerization activity, thus enabling the preparation of a low density, high molecular weight polyolefin, a catalyst composition including the same, and a method for preparing a polyolefin using the composition.

First claim

The invention claimed is:

1. A transition metal complex represented by the following Chemical Formula 1-1, Chemical Formula 1-2, Chemical Formula 1-3, Chemical Formula 1-4, or Chemical Formula 1-5:

wherein, in Chemical Formulas 1-1 to 1-5,
each Cy is a cyclohexyl group,
each tBu is a tert-butyl group,
each Me is a methyl group, and
each Ph is a phenyl group.

2. A catalyst composition for olefin polymerization comprising the transition metal complex of claim 1 and a catalyst,
wherein the cocatalyst is one or more compounds selected from the group consisting of the compounds represented by the following Chemical Formulas 4 to 6:
—[Al(R 41 )—O] c —  [Chemical Formula 4]

wherein, in Chemical Formula 4, R 41 is independently be a halogen radical, a C1-20 hydrocarbyl radical, or a C1-20 hydrocarbyl radical substituted with a halogen, and c is an integer of 2 or more;
D(R 51 ) 3   [Chemical Formula 5]

wherein, in Chemical Formula 5, D is aluminum or boron, and R 51 is a C1-20 hydrocarbyl or a C1-20 hydrocarbyl group substituted with a halogen;
[L-H] + [Q(E) 4 ] −   [Chemical Formula 6]

wherein, in Chemical Formula 6, L is a neutral Lewis base, [L-H] + is a Bronsted acid, Q is boron or aluminum of a +3 oxidation state, and E is independently a C6-20 aryl group or a C1-20 alkyl group of which one or more hydrogen atoms are unsubstituted or substituted with a halogen, a C1-20 hydrocarbyl, an alkoxy functional group, or a phenoxy functional group.

3. A method for preparing a polyolefin comprising:
polymerizing olefin monomers in the presence of the catalyst composition for olefin polymerization of claim 2 ,
wherein the polymerizing is conducted at a temperature of 25 to 500° C. and a pressure of 1 to 100 bar.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Dong Eun
• Kim A Rim
• Gong Jin Sam
• Lee Choong Hoon
• Jung Seung Hwan

Classifications

• C01G23/002 Primary

  Compounds containing titanium, with or without oxygen or hydrogen, and containing two or more other elements (C01G23/001, C01G23/003 take precedence) · CPC title

• C08F2420/06

  Cp analog where at least one of the carbon atoms of the non-coordinating part of the condensed ring is replaced by a heteroatom · CPC title

• C07F17/00

  Metallocenes · CPC title

• C08L23/18

  Homopolymers or copolymers of hydrocarbons having four or more carbon atoms · CPC title

• C08F2420/04

  Cp or analog not bridged to a non-Cp X ancillary anionic donor · CPC title