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Title:
REFRIGERATOR OIL AND HYDRAULIC FLUID COMPOSITION FOR REFRIGERATOR
Document Type and Number:
Japanese Patent JP2011195630
Kind Code:
A
Abstract:

To provide a refrigerator oil attaining all of excellent refrigerant compatibility, lubricity and low temperature fluidity when using with difluoromethane refrigerant; and a hydraulic fluid composition for refrigerator.

The refrigerator oil is an ester of dipentaerythritol and fatty acid and contains ≥10 mass% ester in which the ratio of 2-methyl penthanoic acid in the fatty acid is ≥20 mol% on the basis of total quantity of the refrigerator oil, and is used with the difluoromethane refrigerant. The hydraulic fluid composition for refrigerator contains the refrigerator oil and the difluoromethane refrigerant.


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Inventors:
TAKIGAWA KATSUYA
SAITO MASANORI
OKIDO TAKESHI
Application Number:
JP2010061197A
Publication Date:
October 06, 2011
Filing Date:
March 17, 2010
Export Citation:
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Assignee:
JX NIPPON OIL & ENERGY CORP
International Classes:
C10M105/38; C09K5/04; C10N30/00; C10N30/02; C10N30/06; C10N40/30
Domestic Patent References:
JPH03227397A1991-10-08
JPH08157847A1996-06-18
JPH08120288A1996-05-14
JP2002356694A2002-12-13
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Yoshinori Shimizu



 
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