Patent ID: 6461730
Filing Date: 2002-10-08
Classification: C10M,C10N,Y10T

Abstract:
A coated wire which is used for forming the stator windings of an electrical refrigerating compressor using a refrigerant, said wire being first coated with an electrically insulating layer comprising a lacquer compatible with and resistant to said refrigerant and then a lubricant also compatible with said refrigerant, said lubricant consisting of at least one compound of the general formulaCH3â€”Xnâ€”R wherein X is a linear or branched hydrocarbon group with n carbon atoms and optionally containing one or more double bonds, and R is selected from a group consisting of(a) â€”COOR1, wherein R1 is C1-C4 alkyl, in which case n is 14-19; (b) â€”OOCâ€”R2â€”COOR3, wherein R2 is C7-C10 alkyl and R3 is C1-C4 alkyl, in which case n is 0-3; (c) wherein R4 and R5 are separately hydrogen or C1-C2 alkyl, in which case n is 12-18; (d) wherein R6 and R7 are separately hydrogen or C4-C8 alkyl, in which case n is 0-3; (e) a group of the formula â€ƒin which case n is 8-14; (f) a group of the formula â€ƒin which case n is 8-14; (g) a group of the formula wherein R8 is hydrogen or C1-C2 alkyl, in which case n is 6-11 or (h) a group of the formula wherein R9 is hydrogen or C1-C2 alkyl, in which case n is 1-5.