US2007152184A1PendingUtilityA1

Refrigerant compositions

55
Individually held — no corporate assignee on recordPriority: Jul 12, 1999Filed: Mar 12, 2007Published: Jul 5, 2007
Est. expiryJul 12, 2019(expired)· nominal 20-yr term from priority
Inventors:Neil Andre RobertsOwen Ross Chambers
C09K 5/045C09K 2205/112C09K 2205/12C09K 2205/124
55
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

Refrigerant compositions are provided which include: (a) pentafluoroethane or trifluoromethoxydifluoromethane or hexafluorocyclopropane or mixtures thereof, in an amount from about 60 to about 70% by weight based on the weight of the composition; (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane or trifluoromethoxypentafluoroethane or 1,1,1,2,3,3-heptafluoropropane or mixtures thereof, in an amount from about 26 to 36% by weight based on the weight of the composition; and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, having a boiling point from −12° C. to +10° C., or a mixture thereof, or a mixture of one or more of the hydrocarbons with one or more other hydrocarbons or ethers, said mixture having a bubble point from −12° C. to +10° C., in an amount from about 1% to 4% by weight based on the weight of the composition. Also provided is a process of refrigeration using the refrigerant compositions and a refrigeration apparatus containing the refrigerant compositions.

Claims

exact text as granted — not AI-modified
1 - 23 . (canceled)  
   
   
       24 . A composition, consisting essentially of: 
 (a) pentafluoroethane in an amount of from 62% to 67% by weight based on the weight of the composition,    (b) 1,1,1,2-tetrafluoroethane in an amount of from 26% to 36% by weight based on the weight of the composition, and    (c) isobutane in an amount from 3% to 4% by weight based on the weight of the composition.    
   
   
       25 . A composition according to  claim 24  in which component (c) is present in an amount of about 3.5% by weight based on the weight of the composition.  
   
   
       26 . A composition according to  claim 24  in which component (a) is present in an amount about 64 up to about 66% weight based on the weight of the composition.  
   
   
       27 . A composition according to  claim 24  in which component (b) is present in an amount about 28 to about 32% weight based on the weight of the composition.  
   
   
       28 . A composition according to  claim 24  in which the weight ratio of component (a), component (b) is at least 1.5:1.  
   
   
       29 . A composition according to  claim 28  in which the said weight ratio is 1.5:1 to 3:1  
   
   
       30 . A composition, consisting essentially of: 
 (a) pentafluoroethane in an amount of from 62% to 67% by weight based on the weight of the composition,    (b) 1,1,1,2-tetrafluoroethane in an amount of from 26% to 36% by weight based on the weight of the composition,    (c) isobutane in an amount from 3% to 4% by weight based on the weight of the composition,    (d) one or more lubricant selected from the group consisting of mineral oils, alkylbenzene lubricants, synthetic lubricants, and fluorinated oils, and one or more additive selected from the group consisting of extreme pressure, antiwear improvers, oxidation inhibitors, thermal stability improvers, corrosion inhibitors improvers, viscosity index improvers, pour point depressants, detergents, anti-foaming agents, and viscosity adjusters.    
   
   
       31 . A composition according to  claim 24  further comprising at least of the additional component selected from the group consisting of lubricants and additives.  
   
   
       32 . A composition according to  claim 31  wherein the lubricant is one or more lubricant selected from the group consisting of mineral oils, alkylbenzene lubricants, synthetic lubricants, and fluorinated oils.  
   
   
       33 . A composition according to  claim 32  wherein additive is one or more additive selected from the group consisting of extreme pressure, antiwear improvers, oxidation inhibitors, thermal stability improvers, corrosion inhibitors improvers, viscosity index improvers, pour point depressants, detergents, anti-foaming agents, and viscosity adjusters.  
   
   
       34 . A process for producing refrigeration which comprises condensing a composition as claimed in  claim 24  and thereafter evaporating the composition in the vicinity of a body to be cooled.  
   
   
       35 . A refrigeration apparatus containing, as refrigerant, a composition as claimed in  claim 24 .  
   
   
       36 . A process for producing refrigeration which comprises condensing a composition as claimed in  claim 30  and thereafter evaporating the composition in the vicinity of a body to be cooled.  
   
   
       37 . A refrigeration apparatus containing, as refrigerant, a composition as claimed in  claim 30.

Join the waitlist — get patent alerts

Track US2007152184A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.