CATALYTIC TRIMERIZATION AND TETRAMERIZATION OF OLEFINIC MONOMERS

A catalyst precursor composition comprising a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I): (R1)(R2)P-X-P(R3)(R4) (I) where X is a bivalent organic bridging group, R1 and R3 are hydrocarbyl groups, and R2 and R4 are aromatic groups; and c) a second...

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Bibliographic Details
Main Authors VAN DER HEIJDEN HARRY, VAN ZON ARIE, ON QUOC A, SMIT JOHAN P, DE BOER ERIC J.M
Format Patent
LanguageEnglish
Published 27.12.2007
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
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Summary:A catalyst precursor composition comprising a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I): (R1)(R2)P-X-P(R3)(R4) (I) where X is a bivalent organic bridging group, R1 and R3 are hydrocarbyl groups, and R2 and R4 are aromatic groups; and c) a second ligand having the general formula (II): (R1')(R2')P-X'-P(R3')(R4') (II) where X' is a bridging group containing nitrogen and R1', R2'', R3' and R4' are hydrocarbyl groups. The present invention also relates to a catalyst system comprising the catalyst precursor composition of the present invention and a cocatalyst.
Bibliography:Application Number: US20070770520