Lubricant refrigerant comprising composition containing fluorohy

Details Lubricant refrigerant comprising composition containing fluorohy Lubricant refrigerant comprising composition containing fluorohy

1994-01-03

1995-07-11

Skane, Christine

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

With lubricants, or warning, stabilizing or anti-corrosion...

252 52A, 252 67, C09K 504, C10M10702, C10M10734

Patent

active

054318351

ABSTRACT:
There has been disclosed herein a lubricant for refrigerating machines employing tetrafluoroethane or the like as a refrigerant which comprises as an essential component a base oil comprising (A) 40 to 95% by weight of a synthetic oil composed of a poly-.alpha.-olefin and/or an ethylene/.alpha.-olefin copolymer or a mixture of an alkylbenzene and a poly-.alpha.-olefin and/or an ethylene/.alpha.-olefin copolymer and (B) 5 to 60% by weight of a fluidity improver composed of a polyoxyalkylene glycol compound, etc. The lubricant is used along with a refrigerant comprising a substituted flon compound such as 1,1,1,2-tetrafluoroethane (R-134a), and is excellent in the performance such as wear resistance, electrical insulating properties, hydrolytic stability, nonhygroscopicity, etc. and also in returnability of the lubricant. Thus, the lubricant is especially effective when used in automobile or household air conditioners, refrigerators, etc. having high industrial usefulness.

REFERENCES:
patent: 4946611 (1990-08-01), Kaneko
patent: 5084196 (1992-01-01), Seiki
patent: 5100569 (1992-03-01), Nalewajek et al.
patent: 5295357 (1994-03-01), Kaneko

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