LUBRICATING OIL COMPOSITION FOR REFRIGERATORS AND COMPRESSORS WITH THE COMPOSITION
First Claim
1. A lubricating oil composition/refrigerant combination, the refrigerant comprisingat least one fluorine-containing organic compound molecular formula (A):
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CpOqFrRs
(A)wherein R represents Cl, Br, I, or H;
p, q, r, and s are integers of 1 to 6, 0 to 2, 1 to 14, and 0 to 13, respectively, with the proviso that when q is 0, p is 2 to 6, and at least one carbon-carbon unsaturated bond is present in the molecule, ora combination of the fluorine-containing organic compound with a saturated fluorinated hydrocarbon compound, andsaid lubricating oil composition/refrigerant combination comprising a base oil comprising as a main component a polyol ester compound obtained from a polyhydric alcohol selected from the group consisting of pentaerythritol, dipentaerythritol, trimethylolpropane and neopentyl glycol, and a C4 to C20 aliphatic monocarboxylic acid, wherein said polyol ester compound has an acid value of 0.02 mgKOH/g or less and a hydroxyl value of 5 mgKOH/g or less.
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Accused Products
Abstract
A lubricating oil composition for refrigerators comprising a base oil which comprises as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane, and neopentyl glycol and a C4 to C20 aliphatic monocarboxylic acid and which has an acid value of 0.02 mgKOH/g or less and a hydroxyl value of 5 mgKOH/g or less. A compressor using the lubricating composition. The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability. The compressor uses the lubricating composition.
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Citations
16 Claims
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1. A lubricating oil composition/refrigerant combination, the refrigerant comprising
at least one fluorine-containing organic compound molecular formula (A): -
CpOqFrRs
(A)wherein R represents Cl, Br, I, or H;
p, q, r, and s are integers of 1 to 6, 0 to 2, 1 to 14, and 0 to 13, respectively, with the proviso that when q is 0, p is 2 to 6, and at least one carbon-carbon unsaturated bond is present in the molecule, ora combination of the fluorine-containing organic compound with a saturated fluorinated hydrocarbon compound, and said lubricating oil composition/refrigerant combination comprising a base oil comprising as a main component a polyol ester compound obtained from a polyhydric alcohol selected from the group consisting of pentaerythritol, dipentaerythritol, trimethylolpropane and neopentyl glycol, and a C4 to C20 aliphatic monocarboxylic acid, wherein said polyol ester compound has an acid value of 0.02 mgKOH/g or less and a hydroxyl value of 5 mgKOH/g or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification