Compositions – Vaporization – or expansion – refrigeration or heat or energy...
Patent
1994-05-19
1996-09-03
Therkorn, Linda Skaling
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
62 14, 252194, 252305, 264DIG5, 510411, 510506, C09K 504, C09K 330, C08D 914, C11D 750
Patent
active
055520740
ABSTRACT:
Refrigerant compositions include mixtures of bis(difluoromethyl) ether and a second component wherein the second component is 1-trifluoromethoxy-1,1,2,2-tetrafluoroethane, difluoromethoxy pentafluoroethane, 1-trifluoromethoxy-1,2,2,2-tetrafluoroethane, 1-trifluoromethoxy-2,2,2-trifluoroethane, tris(trifluoromethyl)amine, difluoromethyl sulfur pentafluoride, pentafluoroethyl sulfur pentafluoride, ammonia, butane or isobutane.
The invention also relates to azeotropic or azeotrope-like compositions which comprise admixtures of effective amounts of bis(difluoromethyl) ether and 1-trifluoromethoxy-1,1,2,2-tetrafluoroethane, difluoromethoxy pentafluoroethane, 1-trifluoromethoxy-1,2,2,2-tetrafluoroethane, 1-trifluoromethoxy-2,2,2-trifluoroethane, tris(trifluoromethyl)amine, difluoromethyl sulfur pentafluoride, pentafluoroethyl sulfur pentafluoride, ammonia, butane or isobutane.
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"Dipole Moments of Seven Refrigerants", Meyer et al., Jrl. of Chem. & Eng. Data, vol. 36, No. 4, 1991; pp. 409-413.
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Minor Barbara H.
Patron Donna M.
E. I. Du Pont de Nemours and Company
Therkorn Linda Skaling
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