abstract |
(A) about 60% to about 70% by weight of HFC-32; (b) from about 20% to about 40% by weight of a compound selected from unsaturated -CF3-terminated propene, unsaturated-CF3-terminated butene, and combinations thereof; And (c) greater than about 0 weight percent to about 10 weight percent of n-butane, isobutane, and combinations thereof. |