REFRIGERATOR LUBRICATING OIL AND MIXED COMPOSITION FOR REFRIGERATOR

• Main Authors: HOSHIDA TAKAHIRO, KANEKO MASATO
• Format: Patent
• Language: English; Japanese
• Published: 10.11.2016
• Subjects: ADHESIVES; BLASTING; CHEMISTRY; COMBINED HEATING AND REFRIGERATION SYSTEMS; DYES; FUELS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LUBRICANTS; LUBRICATING COMPOSITIONS; MANUFACTURE OR STORAGE OF ICE; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL ENGINEERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; POLISHES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION; WEAPONS

PROBLEM TO BE SOLVED: To provide a refrigerator lubricating oil and a mixed composition for a refrigerator for suppressing rubber swelling.SOLUTION: There is provided a refrigerator lubricating oil which comprises: a base oil mainly composed of a polyol ester (A) of a fatty acid (a1) having 3 to 18 carbon atom and a polyol (a2) selected from neopentyl glycol, trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol and dipentaerythritol; and a disulfide and/or trisulfide compound (B), wherein the blending amount of the disulfide and/or trisulfide compound (B) is 30 to 10000 mass ppm in terms of sulfur based on the total amount of the refrigerator lubricating oil.SELECTED DRAWING: None 【課題】ゴム膨潤を抑制する冷凍機潤滑油及び冷凍機用混合組成物を提供する。【解決手段】本発明の冷凍機潤滑油は、炭素数３〜１８の脂肪酸である脂肪酸（ａ１）と、ネオペンチルグリコール、トリメチロールエタン、トリメチロールプロパン、トリメチロールブタン、ペンタエリスリトール及びジペンタエリスリトールから選択されるポリオール（ａ２）とのポリオールエステル（Ａ）を主成分とする基油と、ジスルフィド及び／又はトリスルフィド化合物（Ｂ）とを含む冷凍機潤滑油であって、前記ジスルフィド及び／又はトリスルフィド化合物（Ｂ）の配合量が、冷凍機潤滑油全量に対して、硫黄換算値で３０〜１００００質量ｐｐｍである。【選択図】なし