Color stabilizers for zinc dithiophosphates

A small amount of hydrogen sulfide, an olefin, a mercaptan, an epoxide, a phosphite or a phosphine are added to a zinc dialkyldithiophosphate salt to decrease the rate of color generation upon storage and/or exposure to heat.

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Bibliographische Detailangaben
Hauptverfasser:	CASPARI, GUNTER, VALCHO, JOSEPH J
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS 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:	A small amount of hydrogen sulfide, an olefin, a mercaptan, an epoxide, a phosphite or a phosphine are added to a zinc dialkyldithiophosphate salt to decrease the rate of color generation upon storage and/or exposure to heat.