Compressor oil composition

• US 20120046205A1
• Filed: 11/01/2011
• Published: 02/23/2012
• Est. Priority Date: 07/06/2006
• Status: Active Grant

• Current Assignee: Nippon Oil Corporation (ENEOS Holdings, Inc.)
• Original Assignee: Nippon Oil Corporation (ENEOS Holdings, Inc.)
• Inventors: Tagawa, Kazuo, Shimomura, Yuji, Sawada, Ken, Takigawa, Katsuya, Yoshida, Toshio, Mitsumoto, Shinichi, Akiyama, Eiji, Shibata, Junichi, Suda, Satoshi, Yokota, Hideo, Hata, Masahiro, Hoshino, Hiroyuki, Nakao, Hajime, Konishi, Shozaburo
• Granted Patent: US 8,299,006 B2
• Time in Patent Office: Days
• US Class Current: 508/133
• CPC Class Codes: C10M 101/02 Petroleum fractions
• CPC Class Codes: C10M 107/02 Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
• CPC Class Codes: C10M 169/04 Mixtures of base-materials and additives
• CPC Class Codes: C10M 171/008 Lubricant compositions compatible with refrigerants
• CPC Class Codes: C10M 2203/06 Well-defined aromatic compounds
• CPC Class Codes: C10M 2203/065 used as base material
• CPC Class Codes: C10M 2203/1006 used as base material
• CPC Class Codes: C10M 2203/1025 used as base material
• CPC Class Codes: C10M 2205/022 Ethene
• CPC Class Codes: C10M 2205/024 Propene
• CPC Class Codes: C10M 2205/0285 used as base material
• CPC Class Codes: C10M 2205/173 used as base material
• CPC Class Codes: C10M 2207/021 having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2207/026 with tertiary alkyl groups
• CPC Class Codes: C10M 2207/04 Ethers; Acetals; Ortho-esters; Ortho-carbonates
• CPC Class Codes: C10M 2207/042 Epoxides
• CPC Class Codes: C10M 2207/10 Carboxylix acids; Neutral salts thereof
• CPC Class Codes: C10M 2207/126 monocarboxylic
• CPC Class Codes: C10M 2207/144 containing hydroxy groups
• CPC Class Codes: C10M 2207/24 Epoxidised acids; Ester derivatives thereof
• CPC Class Codes: C10M 2207/262 : derived from hydroxy substituted aromatic acids, e.g. salicylates
• CPC Class Codes: C10M 2207/28 : Esters epoxidised esters C10M2207/24
• CPC Class Codes: C10M 2207/281 : of (cyclo)aliphatic monocarboxylic acids
• CPC Class Codes: C10M 2207/289 : containing free hydroxy groups
• CPC Class Codes: C10M 2207/40 : Fatty vegetable or animal oils
• CPC Class Codes: C10M 2209/084 : Acrylate; Methacrylate
• CPC Class Codes: C10M 2215/064 : Di- and triaryl amines
• CPC Class Codes: C10M 2215/065 : Phenyl-Naphthyl amines
• CPC Class Codes: C10M 2215/223 : Five-membered rings containing nitrogen and carbon only
• CPC Class Codes: C10M 2219/024 : of esters, e.g. fats
• CPC Class Codes: C10M 2219/046 : Overbasedsulfonic acid salts
• CPC Class Codes: C10M 2219/066 : Thiocarbamic type compounds
• CPC Class Codes: C10M 2219/068 : Thiocarbamate metal salts
• CPC Class Codes: C10M 2219/082 : containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2219/084 : containing hydroxy groups; Derivatives thereof
• CPC Class Codes: C10M 2219/085 : containing carboxyl groups; Derivatives thereof
• CPC Class Codes: C10M 2219/086 : containing sulfur atoms bound to carbon atoms of six-membered aromatic rings
• CPC Class Codes: C10M 2219/106 : Thiadiazoles
• CPC Class Codes: C10M 2223/04 : Phosphate esters
• CPC Class Codes: C10M 2223/041 : Triaryl phosphates
• CPC Class Codes: C10M 2223/042 : Metal salts thereof
• CPC Class Codes: C10M 2223/043 : Ammonium or amine salts thereof
• CPC Class Codes: C10M 2223/045 : Metal containing thio derivatives
• CPC Class Codes: C10M 2223/047 : Thioderivatives not containing metallic elements
• CPC Class Codes: C10N 2010/02 : Groups 1 or 11
• CPC Class Codes: C10N 2010/04 : Groups 2 or 12
• CPC Class Codes: C10N 2010/12 : Groups 6 or 16
• CPC Class Codes: C10N 2020/013 : Iodine value
• CPC Class Codes: C10N 2020/015 : Distillation range
• CPC Class Codes: C10N 2020/017 : Specific gravity or density
• CPC Class Codes: C10N 2020/02 : Viscosity; Viscosity index
• CPC Class Codes: C10N 2020/065 : Saturated Compounds
• CPC Class Codes: C10N 2020/071 : Branched chain compounds
• CPC Class Codes: C10N 2020/101 : Containing Hydrofluorocarbons
• CPC Class Codes: C10N 2020/103 : Containing Hydrocarbons
• CPC Class Codes: C10N 2020/106 : Containing Carbon dioxide
• CPC Class Codes: C10N 2030/02 : Pour-point; Viscosity index
• CPC Class Codes: C10N 2030/04 : Detergent property or dispersant property
• CPC Class Codes: C10N 2030/06 : Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
• CPC Class Codes: C10N 2030/08 : Resistance to extreme temperature
• CPC Class Codes: C10N 2030/10 : Inhibition of oxidation, e.g. anti-oxidants
• CPC Class Codes: C10N 2030/30 : Anti-misting
• CPC Class Codes: C10N 2030/74 : Noack Volatility
• CPC Class Codes: C10N 2030/76 : Reduction of noise, shudder, or vibrations
• CPC Class Codes: C10N 2040/06 : Instruments or other precision apparatus, e.g. damping fluids
• CPC Class Codes: C10N 2040/08 : Hydraulic fluids, e.g. brake-fluids
• CPC Class Codes: C10N 2040/22 : with essential removal of material , e.g. cutting, grinding or drilling
• CPC Class Codes: C10N 2040/24 : without essential removal of material , e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
• CPC Class Codes: C10N 2040/247 : Stainless steel
• CPC Class Codes: C10N 2040/30 : Refrigerators lubricants or compressors lubricants
• CPC Class Codes: C10N 2080/00 : Special pretreatment of the material to be lubricated, e.g. phosphatising or chromatising of a metal

Abstract

The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % C_A of not more than 2, % C_P/% C_N of not less than 6 and an iodine value of not more than 2.5.

Claims

1. A compressor oil composition comprising:

a lubricating oil base oil having % C_A of not more than 2, % C_P/% C_N of not less than 6, % C_N of 7 to 13, and an iodine value of not more than 2.5, wherein the content of the saturated components in the lubricating base oil is not less than 95% by mass based on the total amount of the lubricating base oil;

at least one antioxidant selected from amine antioxidants, phenolic antioxidants and organometallic antioxidants; and

at least one mist suppressant selected from polymer compounds containing, as constituting monomers, an alkyl acrylate having 1 to 18 carbon atoms, an alkyl methacrylate having 1 to 18 carbon atoms, an olefin having 2 to 20 carbon atoms, styrene, methylstyrene, maleic anhydride and a mixture of two or more thereof, wherein the weight-average molecular weight of mist suppressant is 5,000 to 100,000.

2. The compressor oil composition according to claim 1, wherein the content of the antioxidant is 0.02 to 5% by mass, based on the total amount of the composition.