摘要:
Disclosed is transition metal complex that serves as a catalytic component with which 1-hexene can be produced efficiently with excellent selectivity, even under high temperature conditions, by means of an ethylene trimerization reaction. Said transition metal complex is represented by the following general formula (1), wherein M1 represents a Group 4 transition metal atom, and R1 through R11 and X1 through X3 each independently represent a hydrogen atom, a halogen atom, or a specific organic group.
摘要:
Processes of preparing freeze-dried co-catalyst compositions are provided. In an exemplary embodiment, the process includes mixing an organoaluminum compound with a modifier at low temperature to provide a modified co-catalyst composition. The process further includes further cooling the modified co-catalyst composition under reduced pressure, to provide a freeze-dried co-catalyst composition. Processes of preparing freeze-dried catalyst compositions, processes of preparing catalyst compositions, freeze-dried co-catalyst compositions, freeze-dried catalyst compositions, catalyst compositions, and processes of preparing α-olefins are also provided.
摘要:
The application relates to a process for the work-up of a reaction mixture (RM) comprising cyclododecatriene and an active catalyst system (C) comprising an organoaluminum compound, said process comprising the steps of: a) contacting the reaction mixture (RM) with gaseous ammonia to obtain a first mixture (M1), b) contacting the first mixture (M1) with water to obtain a second mixture (M2), c) distillatively removing cyclododecatriene from the second mixture (M2).
摘要:
The present invention relates to a process to prepare alkylaluminoxanes by reaction of alkylaluminium with a substituted allylic alcohol of the formula wherein each R1 and R2 independently are an aliphatic or aromatic hydrocarbon group, and R3, R4, and R5 each independently may be the same hydrocarbon group as R1 and R2 or a hydrogen atom in the presence of an inert organic solvent. Additionally, it relates to the alkylaluminoxanes obtainable by the above process and their use.
摘要:
This invention relates to a catalyst system for selective oligomerization of ethylene, which includes (i) a chromium compound; (ii) a ligand having a P—C—C—P backbone structure; and (iii) an activator, thus preparing 1-hexene and/or 1-octene with high activity and selectivity.
摘要:
A process for oligomerization of ethylene, comprising subjecting a catalyst composition to a gas phase of ethylene and conducting an oligomerization, wherein the catalyst composition comprises (a) a chromium compound, (b) a metalated ligand, and (c) an activator or cocatalyst; and catalyst composition as well as a metalated ligand.
摘要:
This invention relates to base oils for lubricating compositions. In particular, the present invention provides a process for the selective oligomerisation of C5 to C20 alpha-olefins to produce polyalphaolefin oligomers with a molecular weight distribution that is suitable for use in lubricant base oils.
摘要:
The present invention relates to a compound represented by Chemical Formula 1, a catalyst system for olefin oligomerization comprising the same, and a method of olefin oligomerization using the same.
摘要:
A method of making a heterogenously supported catalyst useful in dimerization, oligomerization or polymerization is provided in which a catalyst precursor containing a metal and an aromatic group are alkylated onto an oligomeric support having at least one terminal unsaturated group by Friedel Crafts alkylation.