Refrigerating Machine Oil Composition

• US 20070257229A1
• Filed: 03/02/2005
• Published: 11/08/2007
• Est. Priority Date: 03/04/2004
• Status: Abandoned Application

• Current Assignee: Nippon Oil Corporation (ENEOS Holdings, Inc.)
• Original Assignee: Nippon Oil Corporation (ENEOS Holdings, Inc.)
• Inventors: Takigawa, Katsuya, Tagawa, Kazuo
• Application Number:
  US10/591,499
• Publication Number:
  US 20070257229A1
• Time in Patent Office: Days
• US Class Current: 252/67
• CPC Class Codes: C10M 169/04 Mixtures of base-materials and additives
• CPC Class Codes: C10M 2207/021 having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2207/042 Epoxides
• CPC Class Codes: C10M 2207/126 monocarboxylic
• CPC Class Codes: C10M 2207/24 Epoxidised acids; Ester derivatives thereof
• CPC Class Codes: C10M 2207/281 of (cyclo)aliphatic monocarboxylic acids
• CPC Class Codes: C10M 2207/282 of (cyclo)aliphatic oolycarboxylic acids
• CPC Class Codes: C10M 2207/2835 used as base material
• CPC Class Codes: C10M 2223/041 Triaryl phosphates
• CPC Class Codes: C10M 2223/047 Thioderivatives not containing metallic elements
• CPC Class Codes: C10N 2020/101 Containing Hydrofluorocarbons
• CPC Class Codes: C10N 2030/06 Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
• CPC Class Codes: C10N 2030/66 Hydrolytic stability
• CPC Class Codes: C10N 2040/30 Refrigerators lubricants or compressors lubricants

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

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.