STABILIZED HEAT TRANSFER COMPOSITIONS, METHODS AND SYSTEMS

• US 20200131416A1
• Filed: 12/24/2019
• Published: 04/30/2020
• Est. Priority Date: 07/29/2016
• Status: Abandoned Application

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Smith, Gregory Laurence
• Application Number:
  US16/726,511
• Publication Number:
  US 20200131416A1
• Time in Patent Office: Days
• CPC Class Codes: C09K 2205/122 Halogenated hydrocarbons
• CPC Class Codes: C09K 2205/22 All components of a mixture being fluoro compounds
• CPC Class Codes: C09K 5/044 comprising halogenated compounds
• CPC Class Codes: C09K 5/045 containing only fluorine as halogen
• CPC Class Codes: C10M 105/38 of polyhydroxy compounds
• CPC Class Codes: C10M 105/50 containing halogen
• CPC Class Codes: C10M 111/02 at least one of them being a non-macromolecular organic compound
• CPC Class Codes: C10M 171/008 Lubricant compositions compatible with refrigerants
• CPC Class Codes: C10M 2203/024 unsaturated
• 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: C10M 2207/026 with tertiary alkyl groups
• CPC Class Codes: C10M 2207/2835 used as base material
• CPC Class Codes: C10M 2209/043 used as base material
• CPC Class Codes: C10M 2211/0206 used as base material
• CPC Class Codes: C10M 2211/022 aliphatic
• CPC Class Codes: C10M 2215/202 containing nitro groups
• CPC Class Codes: C10M 2215/204 containing nitroso groups
• CPC Class Codes: C10M 2223/041 Triaryl phosphates
• CPC Class Codes: C10M 2223/049 Phosphite
• CPC Class Codes: C10N 2020/02 : Viscosity; Viscosity index
• CPC Class Codes: C10N 2020/097 : Refrigerants
• CPC Class Codes: C10N 2020/101 : Containing Hydrofluorocarbons
• CPC Class Codes: C10N 2020/103 : Containing Hydrocarbons
• CPC Class Codes: C10N 2030/08 : Resistance to extreme temperature
• CPC Class Codes: C10N 2030/10 : Inhibition of oxidation, e.g. anti-oxidants
• CPC Class Codes: C10N 2040/30 : Refrigerators lubricants or compressors lubricants
• CPC Class Codes: F25B 31/002 : Lubrication
• CPC Class Codes: F25B 45/00 : Arrangements for charging or discharging refrigerant

Abstract

The present invention relates to heat transfer compositions comprising refrigerant, lubricant and stabilizer, wherein the refrigerant comprises from about 10% by weight to 100% by weight of trifluoroiodomethane (CF₃I), and wherein said lubricant comprises polyol ester (POE) lubricant and/or polyvinyl ether (PVE) lubricant, and wherein said stabilizer comprises an alkylated naphthalene and optionally but preferably an acid depleting moiety.

Claims

1. A heat transfer compositions comprising refrigerant, lubricant and stabilizer, said refrigerant comprising from about 5% by weight to 100% by weight of trifluoroiodomethane (CF₃I), said lubricant comprising polyol ester (POE) lubricant and/or polyvinyl ether (PVE) lubricant, and said stabilizer comprising alkylated naphthalene, wherein said alkylated naphthalene is present in the composition in an amount of from 1% to less than 10% by weight based on the weight of the alkylated naphthalene and the lubricant.

2. The heat transfer composition of claim 1 wherein said alkylated naphthalene is present in the composition in an amount of from 1% to 8% by weight based on the weight of the alkylated naphthalene and the lubricant.

3. The heat transfer composition of claim 1 wherein said alkylated naphthalene is present in the composition in an amount of from 1.5% to 8% by weight based on the weight of the alkylated naphthalene and the lubricant.

4. The heat transfer composition of claim 1 wherein said alkylated naphthalene is present in the composition in an amount of from 1.5% to 6% by weight based on the weight of the alkylated naphthalene and the lubricant.

5. The heat transfer composition of claim 4 wherein said stabilizer further comprises an acid depleting moiety (ADM).

6. The heat transfer composition of claim 5 wherein said stabilizer comprises from about 50% by weight to about 99.9% of alkylated naphthalenes and from 0.05% to about 50% by weight of ADM based on the weight of the stabilizer.

7. The heat transfer composition of claim 6 wherein said stabilizer comprises from about 40% by weight to about 99% of alkylated naphthalenes and from 1% to about 20% by weight of ADM based on the weight of the stabilizer.

8. The heat transfer composition of claim 7 wherein said alkylated naphthalene comprises AN5 and where said ADM comprises ADM4.

9. The heat transfer composition of claim 8 wherein said alkylated naphthalenes consists essentially of AN5 and where said ADM consists essentially of ADM4.

10. The heat transfer composition of claim 9 wherein said stabilizer further comprises a phenol.

11. The heat transfer composition of claim 9 wherein said phenol comprises BHT.

12. A stabilized heat transfer composition comprising:

(a) a lubricant selected from POE lubricant and PVE lubricant; and

(b) a stabilizer comprising from about 50% by weight to about 99.9% of alkylated naphthalene based on the weight of the stabilizer.

13. The stabilized heat transfer composition of claim 12 wherein said lubricant comprises POE lubricant having a viscosity at 40°

C. measured in accordance with ASTM D445 of from about 30 cSt to about 70 cSt.

14. The stabilized heat transfer composition of claim 12 wherein said lubricant comprises neopentyl POE lubricant having a viscosity at 40°

C. measured in accordance with ASTM D445 of from about 30 cSt to about 70 cSt.

15. The stabilized heat transfer composition of claim 12 wherein said stabilizer further comprises from 0.05% to about 50% by weight of ADM based on the weight of the stabilizer.

16. The stabilized heat transfer composition of claim 15 wherein said alkylated naphthalenes consists essentially of AN5 and where said ADM consists essentially of ADM4.

17. The stabilized heat transfer composition of claim 16 wherein said stabilizer further comprises BHT.

18. The stabilized heat transfer composition of claim 15 wherein said alkylated naphthalenes consists essentially of AN10 and where said ADM consists essentially of ADM4.

19. The stabilized heat transfer composition of claim 18 wherein said stabilizer further comprises BHT.

20. The stabilized heat transfer composition of claim 16 wherein said alkylated naphthalenes consists of AN5.