Lubricants for refrigeration compressors

Details Lubricants for refrigeration compressors Lubricants for refrigeration compressors

C - Chemistry, Metallurgy

10

M

253/112, 31/63

C10M 145/04 (2006.01) C09K 5/04 (2006.01) C10M 111/04 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2007374

Lubricant base compositions for compression refrigeration are composed of 95 to 5 percent by weight of polyether polyols having a number average molecular weight of from 400 to 5000 and from 5 to 95 percent of esters made from polyhydric alcohols with alkanols acids or esters made from alkanedioic acids with alkanols. A refrigeration fluid is made from the base composition with the addition of selected hydrochlorofluorocarbons and hydrofluorocarbons so that the base composition is miscible with the refrigerant in the range of from -20°C to greater than 65°C.

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