Ligands and catalyst systems for the oligomerization of olefinic monomers

• Main Authors: DE BOER ERIC JOHANNES MARIA, VAN DER HEIJDEN HARRY, VAN ZON ARIE, SMIT JOHAN PAUL, ON QUOC AN
• Format: Patent
• Language: Chinese; English
• Published: 09.12.2009
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The present invention relates to a ligand having the general formula (I) : (R) 2P-P(R)m(R)n=N(R3) (I) wherein R3 is selected from hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, a heterohydrocarbyl group, a substituted heterohydrocarbyl group, a silyl group or derivative thereof; the R groups are independently selected from an optionally substituted aromatic group bearing a polar substituent on at least one of the ortho-positions; and the R groups are independently selected from hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups with the proviso that when the group is aromatic it does not contain a polar substituent at any of the ortho-positions, with the proviso that m is 0 or 1, n is 1 or 2 and the total of m + n is 2. The present invention also relates to catalyst systems and a process for the simultaneous trimerization and tetramerization of olefinic monomers using said ligands.