COMPOSITIONS CONTAINING TETRAFLUOROPROPENE AND CARBON DIOXIDE

• US 20140107242A1
• Filed: 12/05/2013
• Published: 04/17/2014
• Est. Priority Date: 04/29/2004
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: SINGH, RAJIV R., PHAM, HANG T., SHANKLAND, IAN
• Granted Patent: US 9,884,946 B2
• Time in Patent Office: Days
• US Class Current: 521/143
• CPC Class Codes: C08J 2203/06 CO2, N2 or noble gases
• CPC Class Codes: C08J 2203/162 Halogenated unsaturated hydrocarbons, e.g. H2C=CF2
• CPC Class Codes: C08J 2205/052 Closed cells, i.e. more than 50% of the pores are closed
• CPC Class Codes: C08J 2300/22 Thermoplastic resins
• CPC Class Codes: C08J 2323/06 Polyethene
• CPC Class Codes: C08J 2323/12 Polypropene
• CPC Class Codes: C08J 2325/06 Polystyrene
• CPC Class Codes: C08J 2367/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds; C08J2367/06 takes precedence
• CPC Class Codes: C08J 9/122 Hydrogen, oxygen, CO2, nitrogen or noble gases
• CPC Class Codes: C08J 9/127 Mixtures of organic and inorganic blowing agents
• CPC Class Codes: C08J 9/146 only fluorine as halogen atoms
• CPC Class Codes: C09K 3/30 for aerosols aerosol containers B65D83/14
• CPC Class Codes: C09K 5/045 containing only fluorine as halogen
• CPC Class Codes: C11D 7/5063 Halogenated hydrocarbons containing heteroatoms, e.g. fluoro alcohols
• CPC Class Codes: Y10T 29/4973 Replacing of defective part

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 XCF_zR_3-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.

Claims

1. A foam formed from a foamable composition comprising a blowing agent comprising from about 1 to about 40 percent by weight of carbon dioxide (CO₂) and from about 60 to about 99 percent by weight of one or more compounds of Formula I, XCF₃ (I), wherein X is a C₂ unsaturated, substituted, alkyl radical, and wherein the foam comprises CO₂ and said at least one compound of Formula I in a weight ratio of from about 1:

99 to about 40;

60, respectively.

2. A closed cell foam comprising the foam of claim 1.

3. The foam of claim 1 wherein the weight ratio of CO₂ to said at least one compound of Formula I is at least about 5:

95.

4. The foam of claim 1 wherein the weight ratio of CO₂ to said at least one compound of Formula I is at least about 3:

97.

5. The foam of claim 1 wherein said blowing agent is non-flammable.

6. The foam of claim 1, wherein said foamable composition further comprises at least one adjuvant selected from the group consisting of dispersing agents, surfactants, supplemental flame suppressants, cell stabilizers, polyols, polyol premix components, and combinations of two or more of these.

7. The foam of claim 1, wherein said foam is a thermoplastic foam.

8. The foam of claim 7, wherein the thermoplastic foam is characterized as at least one of an extruded thermoplastic foam, a polystyrene foam, a polyethylene foam, a low density polyethylene foam, a polypropylene foam, and a polyethyleneterphthalate foam.

9. The thermoplastic foam of claim 7 wherein said one or more compounds of Formula I comprises 1,1,1,3-tetrafluoropropene (HFO-1234) and wherein said composition has a vapor pressure of at least about 30 psia at 35°

F.

10. The thermoplastic foam of claim 7 wherein said one or more compounds of Formula I comprises trans-1,1,1,3-tetrafluoropropene (transHFO-1234ze) and wherein said composition has a vapor pressure of at least about 30 psia at 35°

F.

11. The thermoplastic foam of claim 7 wherein said at least one compound of Formula I and said CO₂ together comprise at least about 5% by weight of the blowing agent.

12. The thermoplastic foam of claim 7 wherein said at least one compound of Formula I and said CO₂ together comprise at least about 15% by weight of the blowing agent.

13. The thermoplastic foam of claim 7 wherein said at least one compound of Formula I and said CO₂ together comprise at least about 15% by weight of the blowing agent.

14. The thermoplastic foam of claim 7 wherein said at least one compound of Formula I and said CO₂ together comprise at least about 50% by weight of the blowing agent.