Refrigerating machine oil composition

Details Refrigerating machine oil composition Refrigerating machine oil composition

C - Chemistry, Metallurgy

10

M

C10M 111/04 (2006.01) C10M 105/38 (2006.01) C10M 107/24 (2006.01) C10M 127/06 (2006.01) C10M 145/34 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2325503

A refrigerating machine oil composition which is less apt to cause capillary tube clogging in the case where a hydrofluorocarbon, hydrocarbon, ether, carbon dioxide, or ammonia refrigerant is used. The composition comprises a base oil comprising at least one oxygenic synthetic oil selected among polyvinyl ethers and polyol esters and either a specific polyalkylene glycol alkyl ether or an alkylbenzene having a number-average molecular weight of 100 to 1,000, the amounts of the ether and the alkylbenzene being 1 to 20 wt.% and 1 to 40 wt.%, respectively, based on the whole composition.

L'invention concerne une composition lubrifiante pour machine frigorifique, cette composition permettant d'éviter un encrassage des tubes capillaires dans le cas où l'on utiliserait un frigorigène à base d'un hydrocarbure fluoré, d'un hydrocarbure, d'un éther, de dioxyde de carbone, ou d'ammoniac. Cette composition comprend une huile de base renfermant au moins une huile synthétique oxygénée choisie parmi les éthers polyvinyliques et les esters polyols, ainsi qu'un éther alkyle de polyalkylèneglycol ou un alkylbenzène spécifique, présentant une masse moléculaire moyenne en nombre située entre 100 et 1000, les proportions de l'éther et de l'alkylbenzène variant respectivement entre 1 et 20 % en poids et entre 1 et 40 % en poids, sur la base du poids total de la composition.

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