Patent ID: 8409464
Filing Date: 2013-04-02
Classification: C08F,C10M,C10N

Abstract:
1. The lubricating oil for a compression type refrigerator, comprising: a polyvinyl ether-based compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in a range of 300 to 3,000; an organic carboxylic acid alkali metal salt of a carboxylic acid having 8 to 20 carbon atoms; and a dissolving assistant of said organic carboxylic acid alkali metal salt in an amount of 5 to 100 fold by mass based on an amount by mass of said organic carboxylic acid alkali metal salt, wherein the dissolving assistant comprises at least one member of the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, 1,4-butylene glycol, 2,3-butylene glycol, hexylene glycol, octylene glycol, glycerin glycols and polyhydric alcohols; wherein the polyvinyl ether-based compound has a structure represented by the general formula (I): wherein R