Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic oxygen compound
Reexamination Certificate
2005-08-30
2005-08-30
McAvoy, Ellen M (Department: 1764)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Organic oxygen compound
C252S068000, C568S613000, C568S618000, C568S619000, C568S625000
Reexamination Certificate
active
06936576
ABSTRACT:
A refrigerating machine oil for a carbon dioxide refrigerant according to the invention is a refrigerating machine oil comprising polyalkylene glycol represented by the following general formula (1):in-line-formulae description="In-line Formulae" end="lead"?R1{—(OR2)n—OH}m (1)in-line-formulae description="In-line Formulae" end="tail"?[where R1represents a residue of an organic compound having a hydroxyl group, from which the hydroxyl group has been removed, R2an alkylene group, and m and n respective integers], wherein a number average molecular weight of the polyalkylene glycol is not less than 500 nor more than 5000, wherein a rate of ethylene group among the alkylene group in the polyalkylene glycol is more than 0 and not more than 80 mol %, and wherein a rate of molecules in which the alkylene group bonded to a terminal hydroxyl group in the polyalkylene glycol is an ethylene group, is not more than 20 mol %.
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Ohsumi Tomomasa
Takigawa Katsuya
Finnegan Henderson Farabow Garrett & Dunner LLP
McAvoy Ellen M
Nippon Mitsubishi Oil Corporation
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