LUBRICATING OIL COMPOSITION FOR REFRIGERATING MACHINE

Japanese Patent JP3909743

B2

PROBLEM TO BE SOLVED: To provide a lubricating oil composition for a refrigerating machine, excellent in stability to hydrolysis and oxidation, scarcely causing color development of a lubricating oil nor generating sludge when used for a long period, and suitable for the refrigerating machine for which a refrigerant free from chlorine, such as a hydrofluorocarbon, carbon dioxide or a hydrocarbon, is used.
SOLUTION: This lubricating oil composition for the refrigerating machine for which the hydrofluorocarbon, the carbon dioxide or the hydrocarbon is used as the refrigerant is given by adding (A) at least one kind of compound which contains an alkyl glycidyl ether, alkyl glycidyl ester or cyclohexane oxide in its molecule in an amount of not less than 0.01 wt.% but less than 1 wt.% and (B) at least one kind of diphenylcarbodiimide and a bis(alkylated phenyl)carbodiimide compound in an amount of not less than 0.01 wt.% but less than 1 wt.% to an ester-based or ether-based synthetic lubricating base oil.

Takashi Kaimai
Hitoshi Takahashi

JP2001208332A

April 25, 2007

July 09, 2001

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Japan Energy Co., Ltd.

C10M169/04; C09K5/04; C10M105/38; C10M105/42; C10M107/34; C10M129/10; C10M129/18; C10M129/68; C10M129/70; C10M133/12; C10M133/22; F25B1/00; C10N30/00; C10N30/10; C10N30/12; C10N40/30; (IPC1-7): C10M169/04; C10M105/38; C10M105/42; C10M107/34; C10M129/10; C10M129/18; C10M129/70; C10M133/22; //C10N30:00; C10N30:10; C10N30:12; C10N40:30

JP8209180A
JP2001226692A
JP61970A
JP9188891A

Kiyoshi Fujino
Kiyonori Fujino
Kyoko Yoshimi
Sanae Goto

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