IMPROVED DISPERSANT ADDITIVES AND PROCESS

The invention pertains to improved lubricating oil dispersants wherein a fractionating polymer is prepared prior to functionalization (e.g., in the Koch reaction) for making dispersant additives. In one aspect, it was discovered that by fractionating a polymer to remove light hydrocarbon and unreact...

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Hauptverfasser:	CUSUMANO, JOSEPH, VICTOR, GORDA, KEITH, RAYMOND, ECKSTROM, WILLIAM, BERNARD, STANAT, JON, EDMOND, STOKES, JAMES, PETER, EMERT, JACOB, ISAAC, DIANA, WILLIAM, DANIEL, DANKWORTH, DAVID, CHARLES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOSITIONS BASED THEREON FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LIQUEFIED PETROLEUM GAS LUBRICANTS LUBRICATING COMPOSITIONS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY NATURAL GAS ORGANIC MACROMOLECULAR COMPOUNDS PEAT PETROLEUM, GAS OR COKE INDUSTRIES SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE 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:	The invention pertains to improved lubricating oil dispersants wherein a fractionating polymer is prepared prior to functionalization (e.g., in the Koch reaction) for making dispersant additives. In one aspect, it was discovered that by fractionating a polymer to remove light hydrocarbon and unreacted monomer from the polymer before the carbonylation step of the Koch reaction, the amount of light ester impurities generated was minimized. Light ester is an undesirable byproduct that adversely affects the recycle of the catalyst from the functionalization step of the Koch reaction. The invention also pertains to improved lubricating oil nitrogen-containing dispersant additives derived from fractionated polymer. L'invention concerne des dispersants améliorés pour huiles lubrifiantes, dans lesquels un polymère de fractionnement est préparé avant la fonctionnalisation (par exemple dans la réaction de Koch) de façon à produire des additifs dispersants. Dans un aspect de l'invention, il a été découvert qu'en fractionnant un polymère pour en extraire les hydrocarbures légers et le monomère n'ayant pas réagi, avant l'étape de carbonylation de la réaction de Koch, on pouvait minimiser la quantité d'impuretés d'esters légers générées. L'ester léger est un sous-produit indésirable qui perturbe le recyclage du catalyseur à partir de l'étape de fonctionnalisation de la réaction de Koch. L'invention concerne également des additifs dispersants améliorés contenant de l'azote, destinés aux huiles lubrifiantes et dérivés du polymère fractionné.