Compositions comprising tetrafluoropropene and carbon dioxide
First Claim
1. A foam formed from a foamable composition comprising a blowing agent comprising CO2 and one or more compounds of Formula I
XCFzR3-z
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(I),whereinX is a C2 or a C3 unsaturated, substituted or unsubstituted, alkyl radical,R is independently selected from Cl, F, Br, I or H, andz is 1 to 3,wherein the foam comprises CO2 and said at least one compound of Formula I in a weight ratio from about 1;
99 to about 40;
60, respectively.
1 Assignment
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Accused Products
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 C2 or a C3 unsaturated, 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.
53 Citations
16 Claims
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1. A foam formed from a foamable composition comprising a blowing agent comprising CO2 and one or more compounds of Formula I
XCFzR3-z-
(I),wherein X is a C2 or a C3 unsaturated, substituted or unsubstituted, alkyl radical, R is independently selected from Cl, F, Br, I or H, and z is 1 to 3, wherein the foam comprises CO2 and said at least one compound of Formula I in a weight ratio from about 1;
99 to about 40;
60, respectively.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification