Binary azeotropes of difluoromethane and hydrocarbons

Details Binary azeotropes of difluoromethane and hydrocarbons Binary azeotropes of difluoromethane and hydrocarbons

1998-01-28

1999-12-14

Skane, Christine

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

62114, 510408, C09K 504

Patent

active

060012730

ABSTRACT:
Refrigerant compositions include mixtures of difluoromethane and isobutane, butane, propylene or cyclopropane; pentafluoroethane and propylene or cyclopropane; 1,1,2,2-tetrafluoroethane and propane; 1,1,1,2-tetrafluoroethane and cyclopropane; 1,1,1-trifluoroethane and DME or propylene; 1,1-difluoroethane and propane, isobutane, butane or cyclopropane; fluoroethane and propane or cyclopropane; 1,1,1,2,2,3,3-heptafluoropropane and butane, cyclopropane, DME, isobutane or propane; or 1,1,1,2,3,3,3-heptafluoropropane and butane, cyclopropane, isobutane or propane.

REFERENCES:
patent: 4174295 (1979-11-01), Bargigia et al.
patent: 4482465 (1984-11-01), Gray
patent: 5492541 (1996-02-01), Murphy et al.
patent: 5538661 (1996-07-01), Dawson et al.
patent: 5601753 (1997-02-01), Omure et al.
patent: 5624596 (1997-04-01), Lunger et al.

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