| abstract |
Phosphorus-containing compositions and carboxylic ester compositions are described. The esters are useful as synthetic lubes and as lubricants in liquid compositions containing fluorine-containing hydrocarbons. A liquid composition also is described comprising (A) a major amount of a fluorine containing hydrocarbon containing one or two carbon atoms, and (B) a minor amount of a soluble organic lubricant comprising at least one carboxylic ester characterized by the formulae (I), (IIIA), (IIIB) and (IIIC) wherein R* is a hydrocarbylene group or a hydrocarbylene group substituted with a -P(O)(OR3)2 group; Z is -COOR1, -C(O)NR4R5, -C(O)(OR?6)yN(R4)C(O)R7¿, C(O)(OR6)yOC(O)R7, -CN, -CHO, or -C(O)R7; R° is an alkylene group; R1 is a hydrocarbyl group or a hydrocarbyloxy hydrocarbyl group and R1 may be the same as R3; R3 is independently a hydrocarbyl group; R?4 and R5¿ are each independently H or hydrocarbyl groups; R6 is a hydrocarbylene group; R7 is a hydrocarbyl group; y is an integer from 1 to about 20; R10 is independently H or a hydrocarbyl group; R11 is H, or -COOR1; and n is an integer from 2 to about 6, provided that in formula (I), at least one of Z or R11 is a -COOR1 group, and when both Z and R11 are -COOR1, R* is a hydrocarbylene group substituted with a -P(O)(OR3)2 group. The liquid compositions of the invention are useful particularly as refrigeration liquids in refrigerators and air-conditioners including auto, home and industrial air-conditioners. |