Lubricating-oil composition for refrigeration device

摘要

A lubricating oil composition for a refrigerating machine according to the present invention includes: a base oil including as a main component at least one kind of oxygen-containing compound selected from polyoxyalkylene glycols, polyvinyl ethers, copolymers of poly(oxy)alkylene glycols or monoethers thereof and polyvinyl ethers, polyol esters, and polycarbonates; a sulfonic acid metal salt having a hydrocarbyl group; and a phosphoric acid ester. The lubricating oil composition for a refrigerating machine can enhance the abrasion resistance of a sliding part of a refrigerating machine using a refrigerant including at least one kind of fluorine-containing organic compound selected from compounds represented by the following molecular formula (A) or including a combination of the fluorine-containing organic compound and a saturated fluorinated hydrocarbon compound: CpOqFrRs (A) [in the formula: R represents Cl, Br, I, or H; and p represents an integer of from 1 to 6, q represents an integer of from 0 to 2, r represents an integer of from 1 to 14, and s represents an integer of from 0 to 13, provided that, when q represents 0, p represents from 2 to 6 and one or more carbon-carbon unsaturated bonds are included in a molecule].

主权项

1. A lubricating oil composition for a refrigerating machine,
wherein the refrigerating machine comprises a refrigerant which comprises at least one fluorine-containing organic compound selected from molecular formula (A) or comprises a combination of the fluorine-containing organic compound and a saturated fluorinated hydrocarbon compound:
CpOqFrRs  (A) wherein R represents Cl, Br, I, or H; p represents an integer of from 1 to 6, q represents an integer of from 0 to 2, r represents an integer of from 1 to 14, and s represents an integer of from 0 to 13, provided that, when q represents 0, p represents an integer from 2 to 6 and (A) comprises one or more carbon-carbon unsaturated bonds, and the lubricating oil composition comprises a base oil comprising as a main component at least one compound selected from the group consisting of polyoxyalkylene glycols, polyvinyl ethers, copolymers of poly(oxy)alkylene glycols or monoethers thereof, polyvinyl ethers, polyol esters, and polycarbonates; a sulfonic acid metal salt having a hydrocarbyl group, and a phosphoric acid ester.