Patent ID: 6667285
Filing Date: 2003-12-23
Classification: C09K,C10M,C10N

Abstract:
A lubricating oil for refrigerators, characterized in that it comprises a mixture of:a) at least one aliphatic saturated branched-chain carboxylic acid monoalkyl ester represented by the formula (1) wherein R1 is C1 to C18 straight-chain alkyl or C3 to C18 branched-chain alkyl; R2 is hydrogen, C1 to C18 straight-chain alkyl or C3 to C18 branched-chain alkyl; with the proviso that the total number of carbon atoms contained in the alkyls represented by R1 and R2 is 2 to 18 and that when R2 is hydrogen, R1 is branched-chain alkyl; and R3 is C3 to C12 straight-chain alkyl, C3 to C11 branched-chain alkyl or C3 to C10 cycloalkyl; andb) at least one member selected from the group consisting of: i) fatty acid polyol esters, ii) phthalic acid esters, iii) alicyclic dicarboxylic acid esters, iv) polyvinyl ethers, v) hydrocarbon oils, and vi) polyalkylene glycols, the weight ratio of component a):component b) being 0.5:99.5 to 99.5:0.5.