Process for metal salts of hydrocarbyl dithiophosphoric acid

This invention relates to a process for preparing an overbased metal salt of hydrocarbyl dithiophosphoric acid comprising neutralizing hydrocarbyl dithiophosphoric acid with an amount of metal oxide sufficient to form said overbased metal salt of hydrocarbyl dithiophosphoric acid, which metal oxide...

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Bibliographische Detailangaben
Hauptverfasser:	KADKHODAYAN, ABBAS, GRIFFIN, PAUL G, PILLSBURY, DALE G
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY FUELS LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY ORGANIC CHEMISTRY 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:	This invention relates to a process for preparing an overbased metal salt of hydrocarbyl dithiophosphoric acid comprising neutralizing hydrocarbyl dithiophosphoric acid with an amount of metal oxide sufficient to form said overbased metal salt of hydrocarbyl dithiophosphoric acid, which metal oxide has a surface area of no less than about 4 m2 per gram up to about 12 m2 per gram and whereby the overbased metal salt of hydrocarbyl dithiophosphoric acid thus formed has a base metal to phosphorus weight ratio within the range of greater than about 1.2:1 up to about 1.3:1.