POLYALPHA-OLEFIN COMPOSITIONS AND PROCESSES TO PRODUCE THE SAME

POLYALPHA-OLEFIN COMPOSITIONS AND PROCESSES TO PRODUCE THE SAME

A low viscosity poly(alpha-olefin) (PAO) is produced by contacting one or more C3 to C24 alpha-olefins with an unbridged, substituted bis-cyclopentadienyl transition metal compound, a non-coordinating anion activator, and an alkyl-aluminum compound. The molar ratio of transition metal compound to ac...

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Bibliographische Detailangaben
Hauptverfasser: JIANG, PEIJUN, LEE, GORDON, H, RUCKER, STEVEN, P, YANG, NORMAN, TIRMIZI, SHAKEEL, CHEE, CHIA, S, WU, MARGARET, M, WALZER, JOHN, F, HAGEMEISTER, MARK, BAUGH, LISA, S, CANICH, JO ANN, M, LO, FREDERICK, YIP-KWAI, JACKSON, ANDREW
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
FUELS
LUBRICANTS
LUBRICATING COMPOSITIONS
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:A low viscosity poly(alpha-olefin) (PAO) is produced by contacting one or more C3 to C24 alpha-olefins with an unbridged, substituted bis-cyclopentadienyl transition metal compound, a non-coordinating anion activator, and an alkyl-aluminum compound. The molar ratio of transition metal compound to activator is 10:1 to 0.1:1 and the molar ratio of alkyl aluminum compound to transition metal compound is 1:4 to 4000:1. The transition metal compound has either (a) at least one non-isoolefin substitution on both cyclopentadienyl rings, or (b) at least two substitutions on at least one cyclopentadienyl ring. The PAO is comprised of at least 50 mole % of C3 to C24 alpha-olefins, has a Mw/Mn between 1 and 1.4, and a kinematic viscosity at 100° C. of 20 cSt or less.