Compositions – Preservative agents – Anti-caking – separative or protective coatings or zones
Patent
1991-04-05
1992-10-20
Kyle, Deborah L.
Compositions
Preservative agents
Anti-caking, separative or protective coatings or zones
252 52A, 252 52R, 252 58, 252 68, 252 71, 252384, 252404, 252407, C09K 504
Patent
active
051567687
ABSTRACT:
R12, which contains chlorine, and hydrogen-contributing lubricants react to form acids such as hydrogen chloride and hydrogen fluoride and simultaneously, R12 is converted to R22. Such reactions are undesirable because the acids which form destroy the metallic components of a refrigeration system and cause the breakdown of the lubricants.
The present invention provides a compositions for use in compression refrigeration and air-conditioning which substantially reduce the occurrence of the foregoing problem. The compositions comprise: (a) chlorine-containing refrigerant selected from the group consisting of hydrochlorocarbons, (b) hydrogen-contributing lubricant; and (c) composition comprising: (1) at least one phenol and (2) at least one aromatic epoxide or fluorinated alkyl epoxide wherein the composition (c) substantially reduces the removal of chlorine or chlorine and fluorine from the chlorine-containing refrigerant (a) and replacement of the halogen with hydrogen from the hydrogen-contributing lubricant (b).
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Chen Ruth H.
Harris Kenneth
Thomas Raymond H. P.
Allied-Signal Inc.
Brown Melanie L.
Fee Valerie
Friedenson Jay P.
Kyle Deborah L.
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