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US 7,972,987 B2Granted
Fourth group transition metal compound having cyclopentadienyl ligand, method of preparing compound, and method of preparing olefin polymer using compound
AssigneeLG Chem, Ltd.
InventorsJung-A Lee, Bo-Ram Lee, Eun-Jung Lee, Seung-Whan Jung, Choong-Hoon Lee
Life of this patent
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Abstract
The present invention relates to a novel cyclopentadienyl compound, a fourth group transition metal compound having the cyclopentadienyl compound, a method of preparing the fourth group transition metal compound, a method of preparing an olefin polymer by using the fourth group transition metal compound, and an olefin polymer prepared by using the method.
Claims12
A fourth group transition metal compound of the following Formula 1:
- wherein R1 to R4 are the same or different from each other and each independently a hydrogen atom;
- an alkyl radical having 1 to 20 carbon atoms;
- an alkenyl radical having 2 to 20 carbon atoms;
- a silyl radical;
- an alkylaryl radical;
- or an arylalkyl radical, and may be connected to each other by an alkylidene radical containing an alkyl radical having 1 to 20 carbon atoms or aryl radical to form a ring,
- R5 to R7 are the same or different from each other and each independently a hydrogen atom;
- a halogen radical;
- an alkyl radical having 1 to 20 carbon atoms;
- an aryl radical;
- an alkoxy radical;
- an aryloxy radical;
- an alkylamino radical;
- or an arylamino radical, and two or more groups of R5 to R7 may be connected to each other to form an aliphatic or aromatic ring,
- R8 is a hydrogen atom;
- an alkyl radical having 1 to 20 carbon atoms;
- an aryl radical;
- an alkylaryl radical;
- or an arylalkyl radical, and is not present when Y is a sixteenth group atom,
- CY1 is a substituted or unsubstituted aliphatic or aromatic ring,
- Y is a fifteenth or sixteenth group atom,
- M is a fourth group transition metal, and
- X1 to X3 are the same or different from each other and each independently a halogen radical;
- an alkyl radical having 1 to 20 carbon atoms;
- an alkenyl radical;
- an aryl radical;
- an alkylaryl radical;
- an arylalkyl radical;
- an alkylamino radical;
- an arylamino radical;
- or an alkylidene radical having 1 to 20 carbon atoms.
28 more elements
A compound of the following Formula 2:
- wherein R1 to R4 are the same or different from each other and each independently a hydrogen atom;
- an alkyl radical having 1 to 20 carbon atoms;
- an alkenyl radical having 2 to 20 carbon atoms;
- a silyl radical;
- an alkylaryl radical;
- or an arylalkyl radical, and may be connected to each other by an alkylidene radical containing an alkyl radical having 1 to 20 carbon atoms or aryl radical to form a ring,
- R5 to R7 are the same or different from each other and each independently a hydrogen atom;
- a halogen radical;
- an alkyl radical having 1 to 20 carbon atoms;
- an aryl radical;
- an alkoxy radical;
- an aryloxy radical;
- an alkylamino radical;
- or an arylamino radical, and two or more groups of R5 to R7 may be connected to each other to form an aliphatic or aromatic ring,
- R8 is a hydrogen atom;
- an alkyl radical having 1 to 20 carbon atoms;
- an aryl radical;
- an alkylaryl radical;
- or an arylalkyl radical, and is not present when Y is a sixteenth group atom,
- CY1 is a substituted or unsubstituted aliphatic or aromatic ring, and
- Y is a fifteenth or sixteenth group atom.
18 more elements
A method of preparing a fourth group transition metal compound, comprising the steps of:
- a) reacting a compound represented by the following Formula 3 and alkyl lithium, and then adding a compound containing a protecting group (—R25) thereto to prepare a compound represented by the following Formula 4;
- b) reacting a compound represented by the following Formula 4 and alkyl lithium, and then adding a ketone compound represented by the following Formula 5 thereto to prepare a compound represented by the following Formula 6;
- c) substituting Y of the compound represented by the following Formula 6 by R8 to obtain a ligand to which a cyclic group connected to a phenylene group represented by the following Formula 2 is introduced;
- and
- d) continuously adding 1 equivalent of n-BuLi to the ligand represented by the following Formula 2 to obtain a lithium compound, and reacting the lithium compound and a MCl4 (M ═Ti, Zr, or Hf) compound to obtain the fourth group transition metal compound:
- wherein R1 to R4 are the same or different from each other and each independently a hydrogen atom;
- an alkyl radical having 1 to 20 carbon atoms;
- an alkenyl radical having 2 to 20 carbon atoms;
- a silyl radical;
- an alkylaryl radical;
- or an arylalkyl radical, and may be connected to each other by an alkylidene radical containing an alkyl radical having 1 to 20 carbon atoms or aryl radical to form a ring,
- R5 to R7 are the same or different from each other and each independently a hydrogen atom;
- a halogen radical;
- an alkyl radical having 1 to 20 carbon atoms;
- an aryl radical;
- an alkoxy radical;
- an aryloxy radical;
- an alkylamino radical;
- or an arylamino radical, and two or more groups of R5 to R7 may be connected to each other to form an aliphatic or aromatic ring,
- CY1 is a substituted or unsubstituted aliphatic or aromatic ring,
- Y is a fifteenth or sixteenth group atom,
- R8 is a hydrogen atom;
- an alkyl radical having 1 to 20 carbon atoms;
- an aryl radical;
- an alkylaryl radical;
- or an arylalkyl radical, and is not present when Y is a sixteenth group atom,
- R24 is a hydrogen atom;
- an alkyl radical having 1 to 20 carbon atoms;
- an alkenyl radical having 2 to 20 carbon atoms;
- a silyl radical;
- an alkylaryl radical;
- or an arylalkyl radical, and
- R25 is a protecting group.
30 more elements
Dependencies are inferred from the claim text.