abstract |
The present invention is directed to a refrigerator oil composition comprisingn (a) a triester species having the following structure: nn n n n n n n n n n n n wherein R 1 , R 2 , R 3 , and R 4 are the same or independently selected from hydrocarbon groups having from 2 to 20 and wherein ānā is an integer from 2 to 20; and n (b) a refrigerant. |