US2007257229A1PendingUtilityA1

Refrigerating Machine Oil Composition

Assignee: TAGAWA KAZUOPriority: Mar 4, 2004Filed: Mar 2, 2005Published: Nov 8, 2007

Est. expiryMar 4, 2024(expired)· nominal 20-yr term from priority

C10M 2207/126C10M 2207/042C10M 2207/282C10N 2040/30C10M 2207/281C10N 2020/101C10M 169/04C10M 2223/041C10N 2030/06C10M 2207/021C10M 2207/2835C10N 2030/66C10M 2207/24C10M 2223/047

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Abstract

The refrigerating machine oil composition of the present invention contains a polyol ester as a base oil, a phosphorothionate, a phosphorus-based additive other than said phosphorothionate, and a glycidyl ester epoxy compound. With the refrigerating machine oil composition of the present invention, a high level can be attained for both lubricity and stability in a refrigerating/air conditioning apparatus in which an HFC refrigerant or the like is used, and the refrigerating or air-conditioning apparatus can be stably operated over an extended period.

Claims

exact text as granted — not AI-modified

1 . A refrigerating machine oil composition, containing: 
 a polyol ester as a base oil;    a phosphorothionate;    a phosphorus-based additive other than said phosphorothionate; and    a glycidyl ester epoxy compound.    
   
   
       2 . A refrigerating machine oil composition for package air conditioners, containing: 
 a mixed base oil of a tetraester of pentaeryffiritol and a fatty acid and a diester of neopentyl glycol and a fatty acid;    a phosphorothionate;    a phosphorus-based additive other than said phosphorothionate; and    a glycidyl ester epoxy compound.

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