| 摘要 |
A lubricating oil composition for refrigerator is provided by adding base oil with biphenols selected from 4,4'-methylenebis(2,6-di-t-butyl-phenol), 2'2-methylenebis(4-methyl-6-t-butylphenol), 2,2'-methylenebis(4-ethyl-6-t-butylphenol) and 4,4'-butylidenebis(3-methyl-6-t-butylphenol). |
