PROCESSO DE PREPARACAO DE DETERGENTES-DISPERSANTES DE ALTA ALCALINIDADE PARA OLEOS LUBRIFICANTES

New detergent-dispersants of high alkalinity useful as additives for lubricating oils and a novel process for their preparation are provided. The novel detergent-dispersant additives are prepared by: (1) sulfurizing an alkylphenol in the presence of an alkylbenzene sulfonate of low or zero T.B.N., a...

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Bibliographische Detailangaben
Hauptverfasser:	DEMOURES B, COENT J
Format:	Patent
Sprache:	por
Schlagworte:	ADHESIVES CHEMISTRY DYES FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LUBRICANTS LUBRICATING COMPOSITIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PEAT PETROLEUM, GAS OR COKE INDUSTRIES POLISHES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	New detergent-dispersants of high alkalinity useful as additives for lubricating oils and a novel process for their preparation are provided. The novel detergent-dispersant additives are prepared by: (1) sulfurizing an alkylphenol in the presence of an alkylbenzene sulfonate of low or zero T.B.N., an alkaline earth base and an alkylene glycol; (2) precarbonating the mixture thus obtained; (3) super-alkalinizing and carbonating the resultant precarbonated mixture by means of an alkaline earth base, CO2, and an alkylene glycol; and (4) eliminating the excess alkylene glycol. These detergent-dispersant additives improve the detergent-dispersant power of lubricating oils.