Patent ID: 8709276

Claim:
A refrigeration composition comprising: at least one ester, each of the at least one esters formed by esterification of only two components: a hydroxycarboxylic acid component and an alcohol component, the hydroxycarboxylic acid component selected from the group consisting of hydroxycarboxylic acids comprising more than one carboxylic acid group, hydroxystearic acid, hydroxylauric acid, hydroxydecanoic acid, hydroxyarachidic acid, hydroxypalmitic acid, hydroxylinoleic acid, hydroxyerucic acid, hydroxyarachidonic acid, ricinoleic acid, and combinations thereof, and the alcohol component comprising a polyalkylene glycol; and a base oil lubricant selected from the group consisting of alkylbenzenes, alkylated naphthenics, polyalkylene glycols, polyvinylethers, polyalphaolefins, mineral oils, polyol esters, and combinations thereof.