LUBRICANT FOR VAPOR COMPRESSION REFRIGERATOR USING HYDROCARBON COOLANT

Title:

LUBRICANT FOR VAPOR COMPRESSION REFRIGERATOR USING HYDROCARBON COOLANT

Document Type and Number:

WIPO Patent Application WO/2000/060031

Kind Code:

A1

Abstract:

A lubricant for a vapor compression refrigerator using a lower hydrocarbon coolant which comprises, as a main component, a mineral oil having a kinetic viscosity at 40 °C of 3 to 150 mm?2¿/s, a pour point of -25 °C or lower, a viscosity index of 50 or more, a % C¿P? and a % C¿A? as determined by the n-d-M ring analysis of 50 or more and 12 or less respectively, a nitrogen content of 20 ppm or less, a sulfur content of 0.02 to 0.3 %, and an iodine value of 10g I¿2?/100g or less; a hydraulic fluid composition for a vapor compression refrigerator comprising the lubricant and a lower hydrocarbon coolant; and a refrigeration unit employing the hydraulic fluid composition. The lubricant has excellent compatibility with a hydrocarbon coolant and is excellent in stability and lubricity, and hence is markedly useful as a lubricant for a refrigerator using a lower hydrocarbon coolant which is in no danger of ozone layer destruction or global warming.

Inventors:

KAIMAI TAKASHI
TAKAHASHI HITOSHI

Application Number:

PCT/JP2000/001675

Publication Date:

October 12, 2000

Filing Date:

March 17, 2000

Export Citation:

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Assignee:

JAPAN ENERGY CORP (JP)

International Classes:

C10M101/02; C10M169/04; C10M171/00; (IPC1-7): C10M101/02; C10M129/10; C10M137/04

Domestic Patent References:

WO1998023710A1

1998-06-04

Foreign References:

JPH08170586A	1996-07-02
JPS5876497A	1983-05-09
JPH01161089A	1989-06-23
JPS53136005A	1978-11-28
EP0435670A1	1991-07-03
JPH01275698A	1989-11-06
JPH0362894A	1991-03-18
JPH10130685A	1998-05-19
US4800013A	1989-01-24

Other References: