processo para a trimerização e tetramerização simultânea de monômeros olefínicos

• Main Authors: HARRY VAN DER HEIJDEN, JOHAN PAUL SMIT, ARIE VAN ZON, ERIC JOHANNES MARIA DE BOER, QUOC AN ON
• Format: Patent
• Language: Portuguese
• Published: 13.09.2016
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; 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

A process for the simultaneous trimerization and tetramerization of olefinic monomers, wherein the process comprises contacting at least one olefinic monomer with a catalyst system comprising: a) a source of chromium, molybdenum or tungsten; b) a ligand having the general formula (I); (R1)2P-X-P(R1)m(R2)n (I) wherein: X is a bridging group of the formula -N(R3)-; the R1 groups are independently selected from an optionally substituted aromatic group bearing a polar substituent on at least one of the ortho-positions; and the R2 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; and c) a cocatalyst.