Lubricant composition for refrigerating compressors

Details Lubricant composition for refrigerating compressors Lubricant composition for refrigerating compressors

C - Chemistry, Metallurgy

10

M

C10M 105/38 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2224406

A lubricant composition for refrigerating compressors is described, which uses a refrigerant with a wear imprint, as measured by ASTM D4172, of less than 0.80 mm, a viscosity, as measured by AFNOR T60100, of 10-100 cst and with total HFC miscibility at a composition concentration of not more than 10 wt.%, characterised in that it contains at least 10-100 wt.% of one or more linear heptanoic acid ester with a neopolyol containing not more than 5 hydroxyl groups.

Composition lubrifiante pour compresseur frigorifique utilisant un fluide frigorigène dont l'empreinte d'usure mesurée selon la norme ASTM D4172 est inférieure à 0,80 mm, de viscosité mesurée par la norme AFNOR T60100 comprise entre 10 et 100 cst et de miscibilité totale pour une concentration de la composition inférieure ou égale à 10 % en poids dans les HFC caractérisée en ce qu'elle est constituée par au moins 10 à 100 % en poids d'au moins un ester d'acide heptanoïque linéaire avec un néopolyol dont le nombre de groupements hydroxyles est inférieur ou égal à 5.

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