Halogenated hydrocarbon refrigerant compositions containing...

C - Chemistry – Metallurgy – 09 – K

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C09K 5/04 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2314080

Refrigerant compositions containing polymeric oil-return agents which solubilize or disperse mineral and synthetic oil lubricants with hydroflurocarbon and hydroflurocarbon/hydrochlorofluorocarbon-based refrigerants are disclosed. These polymeric oil-return agents, such as copolymers of fluorinated and non-fluorinated methacrylates, as a small proportion of an overall refrigerant composition, permit efficient return of mineral and synthetic oil lubricants from non-compressor zones back to a compressor zone in a refrigeration system operating with hydrofluorocarbon and hydrofluorocarbon/hydrochlorofluorocarbon-based refrigerants.

La présente invention concerne des compositions de fluides frigorigènes contenant des agents polymères à retour d'huile solubilisant ou dispersant les huiles lubrifiantes minérales ou synthétiques avec des fluides frigorigènes hydrofluorocarbonés et hydrofluorocarbonés/hydrochlorofluorocarbonés. Ces agents polymères de retour d'huile, tels que les copolymères de méthacrylates fluorés ou non fluorés, constituant une petite partie de la totalité d'une composition de fluide frigorigène, permettent le retour efficace des huiles lubrifiantes minérales et synthétiques depuis des zones sans compresseur vers une zone avec compresseur, dans un système frigorigène fonctionnant avec des fluides frigorigènes hydrofluorocarbonés et hydrofluorocarbonés/hydrochlorofluorocarbonés.

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