Hydrofluorocarbon/trifluoroiodomethane/ hydrocarbons refrigerant compositions

• US 9,938,442 B2
• Filed: 11/16/2007
• Issued: 04/10/2018
• Est. Priority Date: 11/16/2007
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Spatz, Mark W., Thomas, Raymond H., Singh, Rajiv R., Yana Motta, Samuel F., Wilson, David P., del Carmen Vera Becerra, Elizabet
• Primary Examiner(s): Hardee, John R
• Application Number:
  US11/941,228
• Publication Number:
  US 20090127497A1
• Time in Patent Office: 3,798 Days
• CPC Class Codes: C09K 2205/12 Hydrocarbons
• CPC Class Codes: C09K 2205/122 Halogenated hydrocarbons
• CPC Class Codes: C09K 5/045 containing only fluorine as halogen
• CPC Class Codes: C10M 171/008 Lubricant compositions compatible with refrigerants
• CPC Class Codes: C10M 2203/06 Well-defined aromatic compounds
• CPC Class Codes: C10M 2203/10 Petroleum or coal fractions, e.g. tars, solvents, bitumen
• CPC Class Codes: C10N 2020/101 Containing Hydrofluorocarbons
• CPC Class Codes: C10N 2020/103 Containing Hydrocarbons
• CPC Class Codes: C10N 2040/30 Refrigerators lubricants or compressors lubricants

Abstract

A composition comprising from about 40 weight percent to about 99.9 weight percent of at least one C₁-C₅ hydrofluorocarbon, from about 0.1 weight percent to about 50 weight percent of CF3I, and from about 0.1 weight percent to about 10 weight percent of at least one C₁-C₆ hydrocarbon and the use of these composition for in methods of the recharging of refrigeration systems.

Claims

1. A single phase composition consisting essentially of:

(a) not less than about 40 weight percent of a blend comprising difluoromethane (R-32) and 1,1,1,2,2-pentafluoroethane (R-125);

(b) from about 38.3 weight percent to about 48.3 weight percent of CF₃I;

(c) optionally isobutane and/or n-butane; and

(d) about 0.2% or greater of lubricant, wherein the composition is a single-phase composition.

2. The composition of claim 1 wherein said blend is non-azeotropic.

3. The composition of claim 2 wherein said lubricant is selected from mineral oil, hydrocarbon oil, alkyl oil, alkyl benzene oil, white or paraffinic oil, and mixtures thereof.

4. The composition of claim 2 wherein said lubricant comprises mineral oil.

5. The composition of claim 2 wherein said lubricant comprises alkyl benzene oil.

6. The composition of claim 1 wherein the isobutane and/or n-butane is present in an amount of from about 0.1 weight percent to about 8 weight percent.

7. The composition of claim 1 wherein the isobutane and/or n-butane is present in an amount of from about 0.1 weight percent to about 5 weight percent.

8. The composition of claim 1 wherein said lubricant comprises mineral oil.

9. The composition of claim 1 wherein said lubricant comprises alkyl benzene oil.

10. The composition of claim 1 wherein said lubricant is selected from mineral oil, hydrocarbon oil, alkyl oil, alkyl benzene oil, white or paraffinic oil, and mixtures thereof.