Refrigerating machine oil composition

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 137/02 (2006.01) C10M 129/26 (2006.01) C10M 129/76 (2006.01) C10M 133/04 (2006.01) C10M 133/16 (2006.01) C10M 141/10 (2006.01) C10M 145/36 (2006.01) C10M 161/00 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2362223

A refrigerating machine oil composition which comprises a base oil comprising a mineral oil and/or a synthetic oil and, compounded therewith, (a) a partial ester of a polyhydric alcohol with a fatty acid and (b) an acid phosphoric ester or an amine salt thereof; and a refrigerating machine oil composition which comprises a base oil comprising a mineral oil and/or a synthetic oil and, compounded therewith, (a) an acid phosphoric ester or an amine salt thereof, (b) an alkylene oxide adduct of an acetylenic glycol, (c) the potassium salt of a fatty acid, etc., (d) an organic acid, and (e) a fatty acide amide, etc. The compositions have excellent lubricating performace and produce a satisfactory friction-reducing effect in either an oily region or an extreme pressure region, especially in friction between an aluminum material and an iron material.

L'invention concerne une composition huileuse pour machines réfrigérantes comprenant une huile de base contenant une huile minérale et/ou une huile synthétique, à laquelle on a combiné (a) un ester partiel d'un alcool polyhydrique et d'un acide gras et (b) un ester d'acide phosphorique ou un sel d'amine de celui-ci. Elle concerne également une composition huileuse pour machines réfrigérantes comprenant une huile de base contenant une huile minérale et/ou une huile synthétique, à laquelle on a combiné (a) un ester d'acide phosphorique ou un sel d'amine de celui-ci, (b) un adduit d'oxyde d'alkylène d'un glycol acétylénique, (c) le sel de potassium d'un acide gras, etc., (d) un acide organique, et (e) un amide d'acide gras, etc.. Ces compositions possèdent d'excellentes propriétés lubrifiantes et produisent un effet réducteur de friction satisfaisant, soit dans une zone huileuse, soit dans une zone de pression extrême, notamment dans la friction entre un matériau en aluminium et un matériau en fer.

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