Lubricant composition for refrigerator and compressor using...

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 107/34 (2006.01) C09K 5/04 (2006.01) C10M 105/18 (2006.01)

Patent

CA 2689583

Disclosed is a lubricant composition for refrigerators, which is characterized by using a substance mainly composed of a polyoxyalkylene glycol derivative and having a hydroxyl number of not more than 5 mgKOH/g, as the base oil. Also disclosed is a compressor using such a lubricant composition for refrigerators. The lubricant composition for refrigerators is used for a refrigerator which uses a refrigerant having a specific structure such as an unsaturated fluorinated hydrocarbon that is usable in current automobile air-conditioning systems. The lubricant composition for refrigerators exhibits excellent compatibility with the refrigerant, while having excellent stability. Also disclosed is compressor using such a lubricant composition for refrigerators.

L'invention concerne une composition de lubrifiant pour réfrigérateurs, qui se caractérise par l'utilisation, en tant qu'huile de base, d'une substance principalement composée d'un dérivé de polyoxyalkylène glycol et qui a un indice d'hydroxyle inférieur à 5 mgKOH/g. Elle concerne également un compresseur qui emploie cette composition de lubrifiant pour réfrigérateurs. La composition de lubrifiant pour réfrigérateurs est utilisée pour un réfrigérateur qui emploie un réfrigérant ayant une structure spécifique, tel qu'un hydrocarbure fluoré insaturé qui peut être utilisé dans les systèmes actuels de climatisation d'automobiles. La composition de lubrifiant pour réfrigérateurs présente une excellente compatibilité avec le réfrigérant, tout en montrant une excellente stabilité. L'invention concerne également un compresseur employant cette composition de lubrifiant pour réfrigérateurs.

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