abstract |
PROBLEM TO BE SOLVED: To provide a refrigerant composition that does not destroy the ozone layer, does not cause an unnecessary level of global warming, and at the same time satisfies all other stringent requirements of such a system for materials used as a heat transfer medium. . (A) a first component comprising difluoromethane (R-32); (b) a second component selected from polyfluorinated C2-C5 olefins; and (c) optionally. A heat transfer composition comprising at least one third component selected from fluorinated C2-C3 alkanes, CF3I, and combinations thereof. [Selection figure] None |