The present invention provides a refrigerating machine oil comprising: a base oil containing an ester of dipentaerythritol with 2-methylbutanoic acid and n-pentanoic acid; and at least one epoxy compound selected from the group consisting of a glycidyl ester compound and a glycidyl ether compound, the refrigerating machine oil being used with a difluoromethane refrigerant.

The present invention relates to a lubricating oil composition containing: a base oil, (A) a benzotriazole derivative having a particular structure, (B) an epoxy compound, and (C) an ashless friction modifier, the ashless friction modifier (C) being contained in an amount of 0.20% by mass or more based on the total amount of the lubricating oil composition.

The present invention relates to a lubricating oil composition containing: a base oil, (A) a benzotriazole derivative having a particular structure, (B) an epoxy compound, and (C) an ashless friction modifier, the ashless friction modifier (C) being contained in an amount of 0.20% by mass or more based on the total amount of the lubricating oil composition.

The present invention relates to lubricant compositions that are especially suitable for the lubrication of turbines or (turbo)compressors which serve to compress chlorine and/or chlorinated products. The lubricant composition comprises a base oil, an antihydrolysis component and a rust and oxidation inhibitor.

The present invention relates to lubricant compositions that are especially suitable for the lubrication of turbines or (turbo)compressors which serve to compress chlorine and/or chlorinated products. The lubricant composition comprises a base oil, an antihydrolysis component and a rust and oxidation inhibitor.

The present invention provides a refrigerating machine oil comprising: a base oil containing an ester of dipentaerythritol with 2-methylbutanoic acid and n-pentanoic acid; and at least one epoxy compound selected from the group consisting of a glycidyl ester compound and a glycidyl ether compound, the refrigerating machine oil being used with a difluoromethane refrigerant.

The present invention provides a refrigerating machine oil comprising: a base oil containing an ester of dipentaerythritol with 2-methylbutanoic acid and n-pentanoic acid; and at least one epoxy compound selected from the group consisting of a glycidyl ester compound and a glycidyl ether compound, the refrigerating machine oil being used with a difluoromethane refrigerant.

A lubricant composition including an epoxide compound is disclosed. An additive package including the epoxide compound is also disclosed. The epoxide compound of the lubricant composition acts to improve compatibility of the lubricant composition with a fluoropolymer seal and improve the total base number of the lubricant composition.

A lubricant composition including an epoxide compound is disclosed. An additive package including the epoxide compound is also disclosed. The epoxide compound of the lubricant composition acts to improve compatibility of the lubricant composition with a fluoropolymer seal and improve the total base number of the lubricant composition.

The present invention provides a lubricating oil composition comprising a lubricating base oil, and at least one ester additive selected from a first ester that is a fatty acid 3,4-epoxycyclohexyl alkyl ester and a second ester that is a 3,4-epoxycyclohexyl carboxylic acid alkyl ester, wherein a content of the ester additive is 0.01 to 5.0% by mass based on the total mass of the lubricating oil composition.