Ligand compound, transition metal compound and catalyst composition including the transition metal compound

Patent metadata

Field	Value
Publication number	US-10093755-B2
Application number	US-201515323595-A
Country	US
Kind code	B2
Filing date	Jul 24, 2015
Priority date	Nov 13, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the transition metal compound. The novel ligand compound and the transition metal compound of the present invention may be usefully used as the catalyst of a polymerization reaction for preparing an olefin polymer having a low density relative to a CGC catalyst. In addition, a product having a low melt index (MI) and a high molecular weight may be manufactured using the olefin polymer polymerized using the catalyst composition including the transition metal compound.

First claim

The invention claimed is:

1. A transition metal compound represented by the following Formula 1:

in the above Formula 1,
R 1 to R 6 are each independently hydrogen; alkyl having 1 to 20 carbon atoms; alkenyl having 2 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; alkylaryl having 7 to 20 carbon atoms; or arylalkyl having 7 to 20 carbon atoms,
R 7 and R 8 are each independently hydrogen; alkyl having 1 to 20 carbon atoms; alkenyl having 2 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; alkylaryl having 6 to 20 carbon atoms; arylalkyl having 7 to 20 carbon atoms; alkyl amido having 1 to 20 carbon atoms; aryl amido having 6 to 20 carbon atoms; or alkylidene having 1 to 20 carbon atoms,
R 9 is hydrogen; alkyl having 1 to 20 carbon atoms; alkenyl having 2 to 20 carbon atoms; alkoxy having 1 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; arylalkoxy having 7 to 20 carbon atoms; alkylaryl having 7 to 20 carbon atoms; or arylalkyl having 7 to 20 carbon atoms,
at least two adjacent elements of R 1 to R 9 are optionally connected to each other to form a ring,
R 10 and R 11 are each independently hydrogen, halogen, alkyl having 1 to 20 carbon atoms, alkenyl having 2 to 20 carbon atoms, aryl having 6 to 20 carbon atoms, alkylaryl having 7 to 20 carbon atoms; arylalkyl having 7 to 20 carbon atoms, alkylamino having 1 to 20 carbon atoms, arylamino having 6 to 20 carbon atoms, or alkylidene having 1 to 20 carbon atoms,
Q is Si, C, N, P, or S, and
M is a transition metal in group 4.

2. The transition metal compound of claim 1 , wherein
in the above Formula 1, R 1 to R 6 are each independently hydrogen; alkyl having 1 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; alkylaryl having 7 to 20 carbon atoms; or arylalkyl having 7 to 20 carbon atoms,
R 7 and R 8 are each independently hydrogen; alkyl having 1 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; or alkylaryl having 6 to 20 carbon atoms,
R 9 is hydrogen; alkyl having 1 to 20 carbon atoms; alkoxy having 1 to 20 carbon atoms;
aryl having 6 to 20 carbon atoms; arylalkoxy having 7 to 20 carbon atoms; alkylaryl having 7 to 20 carbon atoms; or arylalkyl having 7 to 20 carbon atoms,
at least two adjacent elements of R 1 to R 9 are optionally connected to each other to form an aliphatic ring having 5 to 20 carbon atoms or an aromatic ring having 6 to 20 carbon atoms, the aliphatic ring or the aromatic ring being substituted with halogen, alkyl having 1 to 20 carbon atoms, alkenyl having 2 to 20 carbon atoms, or aryl having 6 to 20 carbon atoms, and
Q is Si, C, N, or P.

3. The transition metal compound of claim 2 , wherein
in the above Formula 1, R 1 to R 6 are each independently hydrogen; alkyl having 1 to 20 carbon atoms; or aryl having 6 to 20 carbon atoms,
R 7 and R 8 are each independently hydrogen; alkyl having 1 to 20 carbon atoms; or aryl having 6 to 20 carbon atoms,
R 9 is alkyl having 1 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; arylalkoxy having 7 to 20 carbon atoms; or arylalkyl having 7 to 20 carbon atoms, and
Q is Si.

4. The transition metal compound of claim 1 , wherein M is Ti, Hf, or Zr.

5. The transition metal compound of claim 4 , wherein the compound represented by Formula 1 is represented by one of the following formulae:

6. A method of preparing a transition metal compound of Formula 1 by reacting a compound represented by the following Formula 2 with a compound represented by the following Formula 7 and an organolithium compound:

in the above formulae,
R 1 to R 6 are each independently hydrogen; alkyl having 1 to 20 carbon atoms; alkenyl having 2 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; alkylaryl having 7 to 20 carbon atoms; or arylalkyl having 7 to 20 carbon atoms,
R 7 and R 8 are each independently hydrogen; alkyl having 1 to 20 carbon atoms; alkenyl having 2 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; alkylaryl having 6 to 20 carbon atoms; arylalkyl having 7 to 20 carbon atoms; alkyl amido having 1 to 20 carbon atoms; aryl amido having 6 to 20 carbon atoms; or alkylidene having 1 to 20 carbon atoms,
R 9 is hydrogen; alkyl having 1 to 20 carbon atoms; alkenyl having 2 to 20 carbon atoms; alkoxy having 1 to 20 carbon atoms; aryl having 6 to 20 carbon atoms; arylalkoxy having 7 to 20 carbon atoms; alkylaryl having 7 to 20 carbon atoms; or arylalkyl having 7 to 20 carbon atoms,
at least two adjacent elements of R 1 to R 9 are optionally connected to each other to form a ring,
R 10 and R 11 are each independently hydrogen, halogen, alkyl having 1 to 20 carbon atoms, alkenyl having 2 to 20 carbon atoms, aryl having 6 to 20 carbon atoms, alkylaryl having 7 to 20 carbon atoms, arylalkyl having 7 to 20 carbon atoms, alkylamino having 1 to 20 carbon atoms, arylamino having 6 to 20 carbon atoms, or alkylidene having 1 to 20 carbon atoms,
Q is Si, C, N, P, or S, and
M is a transition metal in group 7.

7. A catalyst composition comprising the transition metal compound according to claim 1 .

8. The catalyst composition of claim 7 , further comprising at least one co-catalyst.

9. The catalyst composition of claim 8 , wherein the co-catalyst comprises at least one selected from the following Formulae 8 to 10:
—[Al(R 22 )—O] a —  [Formula 8]

in the above formula, each R 22 is independently a halogen radical; a hydrocarbyl radical having 1 to 20 carbon atoms; or a hydrocarbyl radical having 1 to 20 carbon atoms, the hydrocarbyl radical being substituted with halogen; and a is an integer of 2 or more;
D(R 22 ) 3   [Formula 9]

in the above formula, D is aluminum or boron; and each R 22 is the same as defined above;
[L-H] + [Z(A) 4 ] − or [L] + [Z(A) 4 ] −   [Formula 10]

in the above formula, L is a neutral or a cationic Lewis acid; H is a hydrogen atom; Z is an element in group 13; each A is independently aryl having 6 to 20 carbon atoms or alkyl having 1 to 20 carbon atoms, where at least one hydrogen atom is independently optionally substituted with a substituent; and the substituent is halogen, hydrocarbyl having 1 to 20 carbon atoms, alkoxy having 1 to 20 carbon atoms or aryloxy having 6 to 20 carbon atoms.

10. The catalyst composition of claim 8 , further comprising a reaction solvent.

11. A method of preparing a polymer in the presence of the catalyst composition according to claim 7 .

12. The method of preparing a polymer of claim 11 , wherein the polymer is a homopolymer or a copolymer of polyolefin.

Assignees

• Lg Chemical Ltd

Inventors

• Kim A Rim
• Kim Dong Eun
• Gong Jin Sam
• Jung Seung Hwan
• Park Hae Woong

Classifications

• C07F7/28

  Titanium compounds · CPC title

• C08F210/16

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title

• C08F2500/12

  Melt flow index or melt flow ratio · CPC title

• C07F7/08

  Compounds having one or more C—Si linkages · CPC title

• C07F17/00

  Metallocenes · CPC title