OLIGOMERIZATION OF ALPHA OLEFINS USING METALLOCENE-SSA CATALYST SYSTEMS AND USE OF THE RESULTANT POLYALPHAOLEFINS TO PREPARE LUBRICANT BLENDS

• Main Authors: BARALT EDUARDO J, BUCK RICHARD M, BEAULIEU WILLIAM B, MASINO ALBERT P, HOPE KENNETH D, SMALL BROOKE L, MCDANIEL MAX P, KREISCHER BRUCE, NETEMEYER ERIC J, YANG QING
• Format: Patent
• Language: English; Korean
• Published: 13.04.2012
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; LUBRICATING COMPOSITIONS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MINERAL WAXES; ORGANIC MACROMOLECULAR COMPOUNDS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

Compositions comprising polyalphaolefins are disclosed. The polyalphaolefin may be produced from a C6to C16normal alpha olefin and the polyalphaolefin may comprise less than 1 weight % saturated alpha olefin monomer; less than 3 weight % saturated dimers; and greater than 80 weight % saturated higher oligomers; and have a 100 °C kinematic viscosity of at least 25 cSt; a viscosity index greater than 160; and a pour point less than -35°C. Alternatively, the polyalphaolefin may be produced from a C6to C16normal alpha olefin comprising at least 80 weight percent of a C8normal alpha olefin and the polyalphaolefin may have a pour point less than 0°C; and a Bernoulli index less than 1.65. Alternatively, the polyalphaolefins may be alpha olefin oligomers that may be produced from a C6to C16normal alpha olefin comprising at least 90 weight percent of a C8normal alpha olefin and the alpha olefin oligomer product may comprise less than 1 weight % residual alpha olefin monomer; less than 3 weight % dimers; and greater than 80 weight % higher oligomers; and have a 100 °C kinematic viscosity of at least 25 cSt; and a viscosity index greater than 170. The polyalphaolefins have no discernable crystallization as determined by differential scanning calorimetry using ASTM D 3418.