The present invention provides a refrigeration lubricant composition comprises an ester obtained from a mixed alcohol and a mixed carboxylic acid as a main component. The mixed alcohol comprises 65 to 99.95 mol% of pentaerythritol and 0.05 to 35 mol% of dipentaerythritol, the mixed carboxylic acid comprises 25 to 55 mol% of monocarboxylic acid having 5 to 8 carbon atoms and 45 to 75 mol% of isononanoic acid, and the composition has a hydroxyl value of 5.0 mgKOH/g or less and an acid value of 0.05 mgKOH/g or less.
本发明提供了一种冷冻润滑剂组合物,其主要成分是由混合醇和混合
羧酸制成的酯。混合醇包括 65 至 99.95 摩尔%的
季戊四醇和 0.05 至 35 摩尔%的二
季戊四醇,混合
羧酸包括 25 至 55 摩尔%的具有 5 至 8 个碳原子的单
羧酸和 45 至 75 摩尔%的异
壬酸,该组合物的羟值为 5.0 mgKOH/g 或更低,酸值为 0.05 mgKOH/g 或更低。