Ligand compound, organic chromium compound, catalyst system for olefin oligomerization, and method for oligomerizing olefin using same
AssigneeLG Chem, Ltd.
InventorsSeul Ki Im, Yong Ho Lee, Ki Soo Lee, Eun Ji Shin, Jin Young Park, Seok Pil Sa, Yoon Ki Hong
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Abstract
The present invention relates to a ligand compound, a catalyst system for olefin oligomerization and a method for oligomerizing an olefin using same. The catalyst system for olefin oligomerization according to the present invention exhibits high selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thus enabling more efficient preparation of alpha-olefins.
Claims9
A ligand compound represented by the following chemical formula 1 or 2.
- in Chemical Formulas 1 and 2,
- N is a nitrogen atom, P is a phosphorus atom, O is an oxygen atom,
- L is a hydrocarbylene having 2 to 10 carbon atoms connecting N and O, and the number of carbons in the shortest chain connecting N and O is 2 to 4,
- R1 to R4 are equal to or different from each other and each independently represents a hydrocarbyl group or a heterohydrocarbyl group having 2 to 20 carbon atoms;
- R5 is an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 15 carbon atoms, an alkylsilyl group having 1 to 10 carbon atoms, an arylsilyl group having 6 to 15 carbon atoms, a silylalkyl group having 1 to 10 carbon atoms, or a silyl aryl group having 6 to 15 carbon atoms or an alkylarylsilyl group having 6 to 15 carbon atoms, and
- R6 is an alkylene having 1 to 10 carbon atoms, an arylene having 6 to 15 carbon atoms, an alkylsilylene having 1 to 10 carbon atoms, an arylsilylene having 6 to 15 carbon atoms, a silylalkylene having 1 to 10 carbon atoms, a silylarylene having 6 to 15 carbon atoms, or an alkylarylsilylene having 6 to 15 carbon atoms.
An organic chrome compound comprising chromium (Cr) to which a ligand compound represented by the following Chemical Formula 1 or 2 is coordinated.
- in Chemical Formulas 1 and 2,
- N is a nitrogen atom, P is a phosphorus atom, O is an oxygen atom,
- L is a hydrocarbylene having 2 to 10 carbon atoms connecting N and O, and the number of carbons in the shortest chain connecting N and O is 2 to 4,
- R1 to R4 are equal to or different from each other and each independently represent a hydrocarbyl group or a heterohydrocarbyl group having 2 to 20 carbon atoms;
- R5 is an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 15 carbon atoms, an alkylsilyl group having 1 to 10 carbon atoms, an arylsilyl group having 6 to 15 carbon atoms, a silylalkyl group having 1 to 10 carbon atoms, or a silyl aryl group having 6 to 15 carbon atoms or an alkylarylsilyl group having 6 to 15 carbon atoms, and
- R6 is an alkylene having 1 to 10 carbon atoms, an arylene having 6 to 15 carbon atoms, an alkylsilylene having 1 to 10 carbon atoms, an arylsilylene having 6 to 15 carbon atoms, a silylalkylene having 1 to 10 carbon atoms, a silylarylene having 6 to 15 carbon atoms, or an alkylarylsilylene having 6 to 15 carbon atoms.
Dependencies are inferred from the claim text.