C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 5/04 (2006.01) C10M 167/00 (2006.01) F25B 43/02 (2006.01) C10M 171/00 (2006.01)
Patent
CA 2360536
A lubricant-refrigerant composition contained within a compression refrigeration system is disclosed which comprises: (A) at least one fluorine-containing hydrocarbon refrigerant containing 1 to 3 carbon atoms, further wherein fluorine is the only halogen in said fluorine-containing hydrocarbon with the proviso that 1,1,1,2- tetrafluoroethane is not the sole refrigerant; and (B) at least one lubricant comprising: (1) a hydrocarbyl substituted arene, (2) a phosphate ester, (3) an organic ester of a carboxylic acid and an alcohol, (4) a perfluoropolyethylene, (5) an ether, (6) a polyether, (7) a polyalphaolefin, or (8) a mineral oil, wherein at a temperature of above -60 °C, a phase separation occurs such that at least two phases are formed, said phases being a refrigerant rich phase and a lubricant rich phase, further wherein the lubricant rich phase resides below the refrigerant rich phase.
L'invention concerne une composition de lubrifiant-frigorigène contenue dans un système de réfrigération. Ladite composition contient: (A) au moins un frigorigène hydrocarboné contenant du fluor, possédant 1 à 3 atomes de carbone, le fluor étant le seul halogène de l'hydrocarbure contenant du fluor, à condition que le 1,1,1,2-tétrafluoroéthane ne soit pas le seul frigorigène; et (B) au moins un lubrifiant contenant (1) un arène à substitution hydrocarbyle, (2) un ester phosphorique, (3) un ester organique d'un acide carboxylique et un alcool, (4) un perfluoroéthylène, (5) un éther, (6) un polyéther, (7) une polyalphaoléfine; ou (8) une huile minérale; une séparation de phase survenant, à une température de plus de 60 DEG C, de sorte qu'au moins deux phases soient formées, lesdites phases consistant en une phase riche en frigorigène et en une phase riche en lubrifiant, la phase riche en lubrifiant résidant au-dessous de la phase riche en frigorigène.
Oberle Jill E.
Rajewski Thomas E.
Ridout & Maybee Llp
The Lubrizol Corporation
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