Compositions – Vaporization – or expansion – refrigeration or heat or energy... – With lubricants – or warning – stabilizing or anti-corrosion...
Patent
1996-07-23
1998-01-27
Medley, Margaret
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
With lubricants, or warning, stabilizing or anti-corrosion...
508579, C09K 500, C10M10508
Patent
active
057118965
ABSTRACT:
A lubricating oil for a fluorinated hydrocarbon-based refrigerant type compressor, said lubricating oil having a kinematic viscosity at 100.degree. C. being 15 to 30 cSt and comprising, as a base oil, at least one polyoxyalkylene glycol derivative represented by the following formula (I):
in which R.sub.1 is an alkyl group having 1 to 4 carbon atoms, R.sub.2 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, PO is an oxypropylene group, EO.sup.1 and EO.sup.2 are oxyethylene groups, p, q and r are average polymerization degrees of PO, EO.sup.1 and EO.sup.2, EO.sup.1, (EO.sup.2)r is a block polymer group of EO.sup.2, p/(p+q) is 0.70 to 0.95, and r/(p+q+r) is 0.03 to 0.30. A lubricating method and a working fluid composition for the fluorinated hydrocarbon-based refrigerant type compressor are also disclosed.
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Japan Energy Corporation
Medley Margaret
Nissan Motor Co,. Ltd.
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