Catalyst system for olefin oligomerization and method for oligomerizing olefins using the same

Patent metadata

Field	Value
Publication number	US-2018229226-A1
Application number	US-201615751938-A
Country	US
Kind code	A1
Filing date	Sep 21, 2016
Priority date	Sep 23, 2015
Publication date	Aug 16, 2018
Grant date	—

Abstract

The present invention relates to a catalyst system for olefin oligomerization, and a method for oligomerizing olefins using the same. The catalyst system for olefin oligomerization according to the present invention exhibits high selectivity to 1-hexene and 1-octene while having excellent catalytic activity, thereby enabling more efficient preparation of alpha-olefins.

First claim

1 . A catalyst system for olefin oligomerization comprising: a ligand compound represented by Chemical Formula 1 below;
a transition metal source; and a cocatalyst:

in the above Chemical Formula 1,
E 1 and E 2 are each independently an element selected from the group consisting of boron (B), nitrogen (N), oxygen (O), silicon (Si), phosphorus (P), and sulfur (S), and
R 1 to R 6 each independently represent hydrogen, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an alkylsilyl group having 1 to 20 carbon atoms, a haloalkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 40 carbon atoms, an arylalkyl group having 7 to 20 carbon atoms, an arylsilyl group having 6 to 20 carbon atoms, an alkylaryl group having 7 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an alkylsiloxy group having 1 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a halogen group, or an amino group.

2 . The catalyst system for olefin oligomerization of claim 1 , wherein
at least one of E 1 and E 2 in Chemical Formula 1 is nitrogen (N) or oxygen (O).

3 . The catalyst system for olefin oligomerization of claim 1 , wherein
at least one of R 1 and R 4 in Chemical Formula 1 is an alkyl group, a cycloalkyl group, or an aryl group having 1 to 20 carbon atoms.

4 . The catalyst system for olefin oligomerization of claim 1 , wherein
the ligand compound includes piperazine substituted with one or more functional groups selected from the group consisting of an alkyl group having 1 to 5 carbon atoms and a cycloalkyl group having 4 to 10 carbon atoms.

5 . The catalyst system for olefin oligomerization of claim 1 , wherein the ligand compound is selected from the group consisting of:

6 . The catalyst system for olefin oligomerization of claim 1 , wherein
the transition metal source includes one or more compounds selected from the group consisting of chromium(III) 2,2,6,6-tetramethylheptanedionate, chromium(III) 2-ethylhexanoate, chromium(III) tris(2-ethylhexanoate), chromium(III) naphthenate [Cr(NP) 3 ], chromium(III) chloride, chromium(III) bromide, chromium(III) fluoride, chromium(III) acetylacetonate, chromium(III) acetate, chromium(III) butyrate, chromium(III) neopentanoate, chromium(III) laurate, chromium(III) stearate, chromium(III) oxalate, chromium bromide, chromium fluoride, chromium chloride, chromium(II) bis(2-ethylhexanoate), chromium(II) acetate, chromium(II) butyrate, chromium(II) neopentanoate, chromium(II) laurate, chromium(II) stearate, and chromium(II) oxalate.

7 . The catalyst system for olefin oligomerization of claim 1 ,
wherein the cocatalyst one or more alkyl aluminum compounds selected from the group consisting of triethyl aluminum, tripropyl aluminum, tributyl aluminum, diethyl aluminum chloride, diethyl aluminum bromide, diethyl aluminum ethoxide, diethyl aluminum phenoxide, ethyl aluminum dichloride, and ethyl aluminum sesquichloride.

8 . The catalyst system for olefin oligomerization of claim 1 , wherein
the molar ratio of the ligand compound to the transition metal source to the cocatalyst is in the range of 0.5:1:1 to 10:1:10,000.

9 . A method for oligomerizing olefins comprising a step of subjecting an olefin to a multimerization reaction in the presence of the catalyst system for olefin oligomerization of claim 1 .

10 . The method for oligomerizing of claim 9 , wherein
the multimerization reaction temperature is 0 to 250° C.

11 . The method for oligomerizing of claim 9 , wherein
the multimerization reaction pressure is 1 to 200 bar.

Assignees

• Lotte Chemical Corp

Inventors

• Shin Min Jae
• Kim Tae-Jin
• Yoon Seung Woong

Classifications

• C07C2/32

  as complexes, e.g. acetyl-acetonates {(complexes of salts of acids of halogen C07C2/20)} · CPC title

• B01J2531/62

  Chromium · CPC title

• C07C2531/22

  Organic complexes · CPC title

• B01J31/143

  of aluminium · CPC title

• B01J31/181 Primary

  Cyclic ligands, including e.g. non-condensed polycyclic ligands, comprising at least one complexing nitrogen atom as ring member, e.g. pyridine · CPC title