Reciprocating compressor lubricants
AssigneeThe Lubrizol Corporation
InventorsBRIDGETT RAKESTRAW, SCOTT MILLER
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Abstract
Refrigeration lubricants with at least one thiophosphorus additive for use in hydrofluorocarbon refrigeration systems. The thiophosphorus additives may improve the stability and metals and/or refrigerant compatibility of the refrigeration lubricant.
Claims31
A refrigeration lubricant comprising at least one oil of lubricating viscosity that is an oxygenate, at least one thiophosphorous additive and at least one phosphorous antiwear additive.
- a. wherein the at least one thiophosphorous additive is triphenylthiophosphate;
- and
- b. wherein the at least one phosphorous antiwear additive comprises alkenyl phosphite, butylated triphenyl phosphate, tricresyl phosphate, dimethyl octadecyl phosphate, or combinations thereof.
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A method of improving the metals compatibility and/or reducing metal corrosion of a composition comprising a refrigeration lubricant comprising at least one oil of lubricating viscosity that is an oxygenate, the method comprising adding least one thiophosphorous additive to the refrigeration lubricant, wherein the at least one thiophosphorous additive is triphenylthiophosphate.
A method of improving the compatibility and/or stability of a refrigeration lubricant with a hydrofluorocarbon (“HFC”) refrigerant, the method comprising adding at least one thiophosphorous additive to the refrigeration lubricant, wherein the at least one thiophosphorous additive is triphenylthiophosphate.
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Dependencies are inferred from the claim text.