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Title:
LUBRICATING OIL COMPOSITION FOR REFRIGERATING MACHINES
Document Type and Number:
WIPO Patent Application WO/2013/146523
Kind Code:
A1
Abstract:
This lubricating oil composition for refrigerating machines is made by blending an additive to a base oil, wherein said additive is a coumarin compound. In refrigerating devices in which this lubricating oil composition for refrigerating machines is to be used, such as open-type automotive air conditioners, electric automotive air conditioners, gas heat pumps, air conditioners, refrigerators, vending machines, showcases, hot-water supply systems, and refrigeration/heating systems, refrigerant leakage can be detected stably over a long period of time. Thus, this lubricating oil composition for refrigerating machines is extremely effective in cases where an unsaturated fluorocarbon refrigerant with low stability is used in the various devices mentioned above.

Inventors:
MATSUMOTO TOMOYA (JP)
KISEN TADASHI (JP)
Application Number:
PCT/JP2013/058046
Publication Date:
October 03, 2013
Filing Date:
March 21, 2013
Export Citation:
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Assignee:
IDEMITSU KOSAN CO (JP)
MATSUMOTO TOMOYA (JP)
KISEN TADASHI (JP)
International Classes:
C10M169/04; C09K5/04; C10M105/06; C10M105/38; C10M107/02; C10M107/24; C10M107/34; C10M129/12; C10N20/02; C10N30/08; C10N30/10; C10N40/30
Domestic Patent References:
WO2010059677A22010-05-27
Foreign References:
JP2007511645A2007-05-10
JP2011202032A2011-10-13
JP2007023227A2007-02-01
JP2006032022A2006-02-02
JPS61211391A1986-09-19
JP2006052938A2006-02-23
Other References:
See also references of EP 2832835A4
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
Bottom intellectual property office of patent business corporation Tatsuyuki (JP)
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