COOLING AGENTS FOR REFRIGERATING SYSTEMS Russian patent published in 2008 - IPC C09K5/04 

FIELD: chemistry.

SUBSTANCE: invention refers to cooling agent composition containing as follows: (a) pentafluorethane, trifluoromethoxyfluoremethane or hexafluorocyclopropane or their mixtures in amount 62 to 67% mass of composition weight, (b) trifluoromethoxypentafluorethane, 1,1,1,2-tetrafluorethane, or their mixtures in amount 26 to 36% mass of composition weight and (c) hydrocarbon at least by 80% mass represents isobutanein amount 3 to 4% mass of composition weight. And cooling agent can include (d) at least one lubricant and/or additive and (e) at least one additional fluorohydrocarbon in amount to 5% mass of composition weight. Invention also concerns cooler units containing offered composition as cooling agent.

EFFECT: production of composition possessing low inflammability, cooling properties of cooling agent composition that are similar to chlordifluorethane R22, possibility of composition reproduction relation steam temperature/pressure, specific for R22.

8 cl, 4 tbl, 6 dwg