LUBRICANT COMPOSITION COMPRISING BI-MODAL SIDE-CHAIN DISTRIBUTION LOFI

PROBLEM TO BE SOLVED: To provide a lubricant composition having improved fluidity, particularly low-temperature fluidity. SOLUTION: The lubricant composition includes (a) an API Group III base stock, (b) at least one semi-crystalline viscosity modifier and (c) at least one LOFI having a side-chain d...

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Hauptverfasser:	MARTELLA DAVID J, BLOCH RICARDO A, BOESE DOYLE H
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a lubricant composition having improved fluidity, particularly low-temperature fluidity. SOLUTION: The lubricant composition includes (a) an API Group III base stock, (b) at least one semi-crystalline viscosity modifier and (c) at least one LOFI having a side-chain distribution satisfying the following requirements: (1) the distribution contains C8-C18side chains with an average number of carbons ranging from 12.4 to 14.4; (2) the side chain distribution is bi-modal with a lower portion of the bi-modal distribution made up primarily of C12and an upper portion of the distribution made up primarily of C16, C18or combinations thereof; (3) the total mol% of the upper portion of the distribution must be less than that of the lower portion of the distribution; and (4) the amount of C12on the side chain must be at least 40 mol% of the total side chain distribution amount. COPYRIGHT: (C)2009,JPO&INPIT