Compositions containing chlorofluoroolefins or fluoroolefins

摘要

Compositions and methods based on the use of fluoroalkene containing from 3 to 4 carbon atoms and at least one carbon-carbon double bond, such as HFO-1214, HFO—HF0-1233, or HF0-1354 having properties highly beneficial in foaming and blowing agent applications, articles and methods.

主权项

1. A heat transfer system comprising a heat transfer composition having low or no acute toxicity comprising:
(a) lubricant; (b) at least one flammable component selected from hydrofluorcarbons and hydrocarbons; (b) at least about 50% by weight of one or more compounds in accordance with Formula II: where R′ is —CF3 and each R is independently Cl, F or H, provided that at least one R on the unsaturated terminal carbon is chlorine, and wherein (i) said one or more compounds of Formula II include no substantial amount of 1,2-dichloro-3,3,3-trifluoropropene, (ii) the acute toxicity level of said one or more compounds of Formula II is at least 30 relative percent less than the acute toxicity level of 1,2-dichloro-3,3,3-trifluoropropene; and (iii) said at least one compound of Formula II reduces the flammability of said heat transfer composition; and (c) wherein the acute toxicity level of the composition is at least 30 relative percent less than the acute toxicity level of 1,2-dichloro-3,3,3-trifluoropropene.