FIELD: chemical or physical processes.
SUBSTANCE: invention relates to a method (versions), where one of the versions includes: a) contacting (i) ethylene, (ii) a catalyst system comprising a heteroatomic ligand complex with an iron salt or a heteroatomic ligand and an iron salt, (iii) hydrogen and (iv) optionally an organic reaction medium and b) forming an oligomer product, where the oligomer product is formed in the presence of ethylene and hydrogen, present in ratio of 0.4 g H2/kg olefin to 5 g H2/kg olefin, and wherein 1) the oligomer product has a Schulz—Flory K value in range of 0.4 to 0.8 and 2) the oligomer product contains (a) less than 1 wt % compounds having more than 70 carbon atoms, (b) less than 1 wt % compounds having a weight-average molecular weight of more than 1000 g/mol, or (c) any combination thereof, the weight percentage being related to the total weight of the oligomer product, where heteroatomic ligand complex with iron salt is a complex of iron salt α-diimine or where the heteroatomic ligand or heteroatomic ligand of the heteroatomic ligand complex with the iron salt is pyridine-bisimine.
EFFECT: technical result is development of new and improved catalyst systems and methods of oligomerization of olefins.
20 cl, 4 dwg, 2 tbl, 11 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHODS OF OLIGOMERISATION OF ETHYLENE | 2017 |
|
RU2741600C1 |
| PHOSPHINYL AMIDINE COMPOUNDS, METAL-CONTAINING COMPLEXES, CATALYTIC SYSTEMS AND THEREOF APPLICATION FOR OLIGOMERISATION OR POLYMERISATION OF OLEFINS | 2010 |
|
RU2565045C2 |
| CATALYSTS FOR OLIGOMERISATION OF OLEFINS AND METHODS FOR PRODUCTION AND USE THEREOF | 2011 |
|
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| IMPROVED REACTOR FOR ETHYLENE OLIGOMERIZATION/TRIMERISATION/TETRAMERISATION REACTOR | 2016 |
|
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| PRODUCTION OF TRANSITION METAL CARBOXYLATES | 2012 |
|
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| PYRIDYLDIAMIDE TRANSITION METAL COMPLEXES, PRODUCTION AND USE THEREOF | 2009 |
|
RU2514405C2 |
| OLIGOMERIZATION OF ALPHA-OLEFINS USING CATALYTIC METALLOCENE-TSK SYSTEMS AND USE OF OBTAINED POLYALPHAOLEFINS FOR PRODUCTION OF LUBRICATING MIXTURES | 2013 |
|
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| METHOD OF PRODUCING ASYMMETRIC BIS(IMINO)-COMPOUNDS | 2007 |
|
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| LIGANDS AND CATALYTIC SYSTEMS COMPRISING THEREOF FOR OLIGOMERIZATION OF ETHYLENE FOR PREPARING LINEAR ALPHA-OLEFINS | 2002 |
|
RU2292343C2 |
| CATALYST COMPOSITION CONTAINING CHAIN SHUTTLE TRANSFER AGENT FOR FORMING ETHYLENE COPOLYMER | 2005 |
|
RU2359979C2 |
