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US 4,002,573 AGranted
Azeotropes of 1,2-dichloro-1,1,2-trifluoroethane
AssigneePhillips Petroleum Company
InventorWilliam Milton Hutchinson, deceased
Life of this patent
Estimating the term…
Abstract
Constant boiling binary admixtures are formed by 1,2-dichloro-1,1,2-trifluoroethane with trichlorofluoromethane, with diethyl ether, and with dichloromethane. A constant boiling ternary admixture is formed by 1,2-dichloro-1,1,2-trifluoroethane, diethyl ether, and 1,2-dibromo-1,1,2,2-tetrafluoroethane.
Claims7
A substantially constant boiling admixture of (A) 1,2-dichloro-1,1,2-trifluoroethane and (B) diethyl ether which at substantially atmospheric pressure is characterized as about 58 to 60 weight percent (A) and about 42 to 40 weight percent (B).
Dependencies are inferred from the claim text.