Compositions – Vaporization – or expansion – refrigeration or heat or energy...
Patent
1998-03-19
2000-12-05
Skane, Christine
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
510409, 510415, C09K 504
Patent
active
061562254
ABSTRACT:
This invention relates to compositions that include nitrous oxide and at least one of trifluoromethane, difluoromethane, tetrafluoroethane, pentafluoroethane, perfluoroethane or ethane. These compositions are useful as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, refrigerants, aerosol propellants, heat transfer media, electronic gases, plasma etchants, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
REFERENCES:
patent: 3723318 (1973-03-01), Butler
patent: 3812040 (1974-05-01), Borchardt
patent: 5766503 (1998-06-01), Shiflett et al.
Chemical Abstracts, 77:50685, "Predicting critical temperature of azeotropes", Li, 1972.
David A. Didion and Donald B. Bivens, Role of Refrigerant Mixtures As Alternatives to CFCs, ASHRAE CFC Technology Conference, Gaithersburg, MD in 1989, May, 1990.
R. L. Powell, Extending the Range, International Conference Proceedings, CFCs, The Day After, Joint Meeting of IIR Commissions B1, B2, E1 and E2, Padova, Italy, 11-19, Sep. 21-23, 1994.
Bivens Donald Bernard
Minor Barbara Haviland
Rice Clifford Keith
Sand James Richard
E. I du Pont de Nemours and Company.
Edwards Mark A.
Skane Christine
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