POLYALPHA-OLEFIN COMPOSITIONS AND PROCESSES TO PRODUCE THE SAME

• Main Authors: JIANG, PEIJUN, LO, FREDERICK YIP-KWAI, LEE, GORDON H, RUCKER, STEVEN P, TIRMIZI, SHAKEEL, YANG, NORMAN, CANICH, JO ANN M, WALZER, JOHN F., JR, BAUGH, LISA S, HAGEMEISTER, MARK, CHEE, CHIA S, WU, MARGARET M, JACKSON, ANDREW
• Format: Patent
• Language: English; French
• Published: 25.01.2007
• Subjects: 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

This invention relates to a polyalpha-olefin (and hydrogenated analogs thereof) comprising more than 50 mole % of one or more C5 to C24 alpha-olefin monomers where the polyalpha-olefin has: a) 40 mole % or more of mm triads, b) a Bromine number of Y or greater, where Y is equal to 89.92 * (V)' ~5863, whre V is the Kinematic Viscosity of the polyalpha-olefin measured at 100~C in cSt, and c) 1,2 disubstituted olefins present at 7 mole % or more, preferably having Z mole % or more of units represented by the formula: where j, k and m are each, independently, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22, n is an integer from 1 to 350, and where Z = 8.420*Log(V)-4.048, where V is the kinematic viscosity of the polyalpha-olefin measured at 1000C in cSt This invention also relates to process to produce such polyalpha-olefins.