Title:
RECIPROCAL TYPE COMPRESSOR OIL
Document Type and Number:
Japanese Patent JP2019199569
Kind Code:
A
Abstract:
To provide the reciprocal type compressor oil that can withstand high temperatures and high pressures, generates little sludge, and can be used stably over a long period of time.SOLUTION: To a base oil containing naphthene with 17% to 30% CN based on a total base oil, 2,6-di-tert-butylphenol and tris phosphite (2,4-di-tert-butyl-phenyl) are added together and included in the base oil to produce a compressor oil having a pour point of -25°C or lower. 2,6-di-tert-butyl-phenol is effective when contained in an amount of 0.5 to 6.0 mass% based on a total amount of compressor oil and tris phosphite (2,4-di-tert-butyl-phenyl) is effective when contained in the amount of 0.3 to 2.0 mass%. Further, addition of an alkaline earth metal salt of alkyl-salicylic acid is more effective, and the amount used is preferably 0.05 mass% to 2.0 mass%.SELECTED DRAWING: None
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Inventors:
KITAGAWA MAI
KANEKO HIROSHI
NAGAKARI MITSUHIRO
KANEKO HIROSHI
NAGAKARI MITSUHIRO
Application Number:
JP2018096080A
Publication Date:
November 21, 2019
Filing Date:
May 18, 2018
Export Citation:
Assignee:
SHELL LUBRICANTS JAPAN KK
International Classes:
C10M129/10; C10M101/02; C10M137/02
Domestic Patent References:
| JP2016102164A | 2016-06-02 | |||
| JP2008510053A | 2008-04-03 | |||
| JPH0362894A | 1991-03-18 |
Attorney, Agent or Firm:
Yoshinori Kamekawa