Patent ID: 8884084
Filing Date: 2014-11-11
Classification: C01B,C07C,Y02P

Abstract:
1. A method of producing an azeotropic composition comprising HF and CF3CH2CHF2, reacting CCl4 with CH2=CHCl to produce CCl3CH2CHCl2 and reacting said CCl3CH2CHCl2 with HF to produce an azeotropic composition comprising HF and CF3CH2CHF2, wherein the azeotropic composition is from about 44 to 84 mole percent HF; and from about 56 to 16 mole percent CF3CH2CHF2; said composition exhibiting a relative volatility of about 1 at a pressure within the range of 5.5 kPa to 3850 kPa when the temperature is adjusted within the range of −50° C. to 130 C.