Gefrierölzusammensetzung

• Main Authors: HAGIHARA, TOSHIYA, IZUMISANO-SHI, OSAKA, JP, SAKAI, AKIMITSU KAO SEIWARYO, WAKAYAMA-SHI, WAKAYAMA, JP, KITAZAWA, KOZO, WAKAYAMA-SHI, WAKAYAMA, JP
• Format: Patent
• Language: German
• Published: 07.04.1994
• Edition: 5
• Subjects: ADHESIVES; CHEMISTRY; DYES; FUELS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; LUBRICANTS; LUBRICATING COMPOSITIONS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; POLISHES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

A refrigeration oil composition of the invention comprises (1) a hydrogenated fluoroethane and (2) an ester compound obtainable from: (2-a) an aliphatic polyhydric alcohol having 1 to 6 primary hydroxyl groups, (2-b) a saturated aliphatic monohydric straight-chain or branched alcohol having 1 to 10 carbon atoms, and (2-c) an aliphatic polycarboxylic acid having 2 to 10 carbon atoms or a derivative thereof. The refrigeration oil composition of the present invention has a sufficient viscosity and a high compatibility with a fluoroethane refrigerant at high and low temperatures and shows a high thermal stability and excellent lubricating properties under the refrigerant atmosphere.