ALPHA-OLEFIN (CO)POLYMER AND LUBRICANT COMPOSITION CONTAINING THE SAME

PROBLEM TO BE SOLVED: To provide a lubricant composition having extremely high shear stability compatibly with excellent low-temperature viscosity characteristics.SOLUTION: There is provided an α-olefin (co)polymer satisfying the following conditions (i), (ii) and (iii): (i) a structural unit derive...

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Hauptverfasser:	SUZUKI TERUFUMI, IIMURA YURIKO, MATSUURA SADAHIKO, ABE SHOTA, DOI YASUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS 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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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a lubricant composition having extremely high shear stability compatibly with excellent low-temperature viscosity characteristics.SOLUTION: There is provided an α-olefin (co)polymer satisfying the following conditions (i), (ii) and (iii): (i) a structural unit derived from a 7-9C α-olefin is ≥75 mol% based on 100 mol% of the whole structural unit composing the α-olefin (co)polymer; (ii) the kinetic viscosity at 100°C is ≤1,500 mm/s; and (iii) an isotacticity by the triad expression in the α-olefin unit sequence part, as measured by the 13C-NMR method, is ≥50%.