Compositions – Vaporization – or expansion – refrigeration or heat or energy... – With lubricants – or warning – stabilizing or anti-corrosion...
Patent
1990-11-16
1992-10-13
McAvoy, Ellen
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
With lubricants, or warning, stabilizing or anti-corrosion...
252 52A, 252 54, 252 67, C10M10552, C07C 4312
Patent
active
051548461
ABSTRACT:
The present invention provides a novel lubricating composition comprising polybutylene glycol having a cap of a fluorinated alkyl group on at least one end thereof. The composition has a molecular weight between about 300 and about 4,000, and a viscosity of about 5 to about 150 centistokes at 37.degree. C. The composition is miscible in combination with refrigerant.
As such, the present invention provides a composition for use in compression refrigeration and air-conditioning comprising: (a) a refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon; and (b) a sufficient amount to provide lubrication of at least one polybutylene glycol having a cap of a fluorinated alkyl group on at least one end thereof.
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Nalewajek David
Pham Hang T.
Thomas Raymond H. P.
Wilson David P.
Allied-Signal Inc.
Brown Melanie L.
Friedenson Jay P.
McAvoy Ellen
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