US Patent 7713434 Refrigerant compositions
Patent 7713434 was granted and assigned to E.I. Du Pont De Nemours And Company on May, 2010 by the United States Patent and Trademark Office.
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Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition; a second component selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight based on the weight of the composition; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 80% isobutane in an amount of from 3% to 4% by weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.
US Patent 07713434 Refrigerant compositions US Patent 7713434 Refrigerant compositions
US Patent 07713434 Refrigerant compositions
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