LUBRICATING OIL COMPOSITION FOR REFRIGERATING MACHINE, COMPOSITION FOR REFRIGERATING MACHINE, LUBRICATION METHOD AND REFRIGERATING MACHINE

• Main Authors: NAKAJIMA SATOSHI, YOKOI YUKI, KANEKO MASATO, FUKANUMA TETSUHIKO, MATSUBARA AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 01.06.2017
• Subjects: ADHESIVES; CHEMISTRY; DYES; FUELS; 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

PROBLEM TO BE SOLVED: To secure lubricity of a slide part and to prevent precipitation of friction modifier under low temperature when the friction modifier is added in refrigerating machine oil.SOLUTION: A lubricating oil composition for refrigerating machine used with refrigerant containing carbon dioxide contains: base oil (A) which contains polyoxyalkylene glycols as main components; and alcohol (B) which a total of hydroxyl groups and ether linkages is 2-3 (but ether linkage may be 0) and has at least one hydroxyl group.SELECTED DRAWING: None 【課題】摺動部位の潤滑性を確保し、さらには、冷凍機油に摩擦調整剤を添加した場合には、摩耗調整剤が低温環境下で析出することを抑制する。【解決手段】本発明の冷凍機用潤滑油組成物は、二酸化炭素を含有する冷媒とともに使用される冷凍機用潤滑油組成物であって、ポリオキシアルキレングリコールを主成分とする基油（Ａ）と、水酸基とエーテル結合の合計が２〜３個（ただし、エーテル結合は０個であってもよい）で、かつ少なくとも１個の水酸基を有するアルコール（Ｂ）とを含有する。【選択図】なし