US2010008810A1PendingUtilityA1

Lubricant composition for rotary gas compressor and rotary gas compressor filled with the same

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Assignee: IDEMITSU KOSAN COPriority: Jan 23, 2007Filed: Dec 21, 2007Published: Jan 14, 2010
Est. expiryJan 23, 2027(~0.5 yrs left)· nominal 20-yr term from priority
Inventors:Hideto Kamimura
C10M 2223/041C10M 2203/1006C10N 2030/02C10M 2223/06C10N 2030/06C10M 2205/0285C10M 2215/065C10M 2223/00C10N 2040/30C10M 2223/04C10M 2219/00C10M 2223/043C10M 171/02C10N 2020/02C10M 2215/064C10N 2020/015
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Claims

Abstract

A lubricating oil composition for a rotary gas compressor has a kinematic viscosity of 5 mm 2 /s or less at 100 degrees C., a flash point of 200 degrees C. or more and 5 volume % distillation temperature of 350 degrees C. or more. The lubricating oil composition contains at least either one of a phosphorous extreme pressure agent and an antioxidant.

Claims

exact text as granted — not AI-modified
1 : A lubricating oil composition for a rotary gas compressor, comprising:
 a kinematic viscosity of 5 mm 2 /s or less at 100 degrees C.;   a flash point of 200 degrees C. or more; and   5 volume % distillation temperature of 350 degrees C. or more.   
   
   
       2 : The lubricating oil composition for the rotary gas compressor according to  claim 1 , wherein
 a kinematic viscosity at 40 degrees C. is 28 mm 2 /s or less.   
   
   
       3 : The lubricating oil composition for the rotary gas compressor according to  claim 1 , wherein
 at least either one of a phosphorous extreme pressure agent and an antioxidant is contained.   
   
   
       4 : The lubricating oil composition for the rotary gas compressor according to  claim 3 , wherein
 the phosphorous extreme pressure agent is at least either one of an orthophosphoric ester and an amine salt of a phosphate ester.   
   
   
       5 : The lubricating oil composition for the rotary gas compressor according to  claim 3 , wherein
 the antioxidant is at least one of an amine compound, a phosphorous compound, a sulfur compound and a phosphorous/sulfur containing compound.   
   
   
       6 : A rotary compressor filled with the lubricating oil composition for the rotary gas compressor according to  claim 1 . 
   
   
       7 : A lubricating oil composition for a rotary gas compressor, having:
 a kinematic viscosity of 5 mm 2 /s or less at 100° C.;   a flash point of 200° C. or more; and   5 volume % distillation temperature of 350° C. or more.

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