Compositions comprising tetrafluoropropene and carbon dioxide

Details Compositions comprising tetrafluoropropene and carbon dioxide Compositions comprising tetrafluoropropene and carbon dioxide

2009-09-11

2011-11-08

Webb, Gregory E (Department: 1761)

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

Liquid composition

C510S412000, C252S067000, C252S068000

Reexamination Certificate

active

08053404

ABSTRACT:
Disclosed are compositions useful in a wide variety of applications, including heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The preferred heat transfer fluid comprises from about 1 to about 40 percent, on a weight basis, of carbon dioxide (CO2) and from about 99 to about 60 percent, on a weight basis, of a compound having the Formula I XCFzR3-z(I), where X is a C2or a C3unsaturated, substituted or unsubstituted, alkyl radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3. A preferred compound of Formula I is tetrafluoropropene, particularly 1,1,1,3-tetrafluoropropene and/or 1,1,1,3-tetrafluoropropene.

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