Ligand compound, catalyst system for olefin oligomerization, and method for olefin oligomerization using the same

摘要

Provided are ligand compounds containing two or more diphosphinoamine functional groups, where the two or more diphosphinoamine functional groups are linked by 4 carbon atoms, a catalyst system including the ligand compounds for olefin oligomerization, and a method for olefin oligomerization using the same. The catalyst system for olefin oligomerization according to the present invention has excellent catalytic activity, and yet, exhibits high selectivity to 1-hexene and 1-octene, thus enabling efficient preparation of alpha-olefin.

主权项

1. A ligand compound, comprising:
two or more groups of Chemical Formula 1:wherein R1 to R4 are each independently a C1-20 alkyl group, a C2-20 alkenyl group, a C6-20 aryl group, a C7-20 arylalkyl group, a C7-20 alkylaryl group, or a C7-20 alkoxyaryl group; and
a group linking the two or more groups by 4 carbon atoms, wherein the group linking the two or more groups by 4 carbon atoms is selected from the group consisting of the groups of the following Chemical Formulae:wherein:
* is a point of attachment bonding to N of the Chemical Formula 1; Ra is independently hydrogen or a C1-5 alkyl; m is an integer of 1 to 5; n is an integer of 1 to 6; and plural Ra's bonded to one ring may be identical to, or different from, each other.