US Patent 7771610 Refrigerant compositions
Patent 7771610 was granted and assigned to E.I. Du Pont De Nemours And Company on August, 2010 by the United States Patent and Trademark Office.
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Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.
US Patent 07771610 Refrigerant compositions US Patent 7771610 Refrigerant compositions
US Patent 07771610 Refrigerant compositions
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