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Title:
REFRIGERATOR OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2008/056629
Kind Code:
A1
Abstract:
Disclosed is a refrigerator oil composition characterized by containing a synthetic base oil and a partial hydrocarbyl ether of an aliphatic polyhydric alcohol condensate. This refrigerator oil composition is also characterized in that the aliphatic polyhydric alcohol condensate is a hindered glycol and/or a 4-20 molecule condensate of an aliphatic polyhydric alcohol having 3-6 hydroxy groups. This refrigerator oil composition is preferably used for compression type refrigerating machines wherein a hydrofluorocarbon, a natural refrigerant such as a hydrocarbon, carbon dioxide or ammonia, a mixed refrigerant of fluorinated methyl iodide and propene, or an unsaturated fluorinated hydrocarbon, a fluorinated ether, a fluorinated alcohol, a fluorinated ketone or one of their mixtures is used as a refrigerant. This refrigerator oil composition has low friction coefficient and excellent energy-saving property.

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Inventors:
TOKIAI TAKEO (JP)
KANEKO MASATO (JP)
KOSHIMA HIROAKI (JP)
Application Number:
PCT/JP2007/071481
Publication Date:
May 15, 2008
Filing Date:
November 05, 2007
Export Citation:
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Assignee:
IDEMITSU KOSAN CO (JP)
TOKIAI TAKEO (JP)
KANEKO MASATO (JP)
KOSHIMA HIROAKI (JP)
International Classes:
C10M105/18; C10M169/04; C10M105/38; C10M105/48; C10M107/24; C10M107/34; C10M129/16; C10N20/00; C10N20/02; C10N20/04; C10N30/06; C10N40/30
Foreign References:
JP2001214186A2001-08-07
JPH10265790A1998-10-06
JP2006282778A2006-10-19
JPH11315295A1999-11-16
JPH11181466A1999-07-06
JPH1112591A1999-01-19
JPS5925890A1984-02-09
JP2006503961A2006-02-02
JPH07507342A1995-08-10
JPH10265790A1998-10-06
JPH11315295A1999-11-16
JPH02305893A1990-12-19
Other References:
See also references of EP 2090643A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (Bridgestone Toranomon Bldg. 6F.25-2, Toranomon 3-chom, Minato-ku Tokyo 01, JP)
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