# US 9,752,069 B2 · Refrigerant composition

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,752,069 B2
- Document ID: US9752069B2
- Status: Granted
- Kind: B2
- Application number: 14/442,855
- Filed: 2013-10-30
- Published: 2015-10-15
- Granted: 2017-09-05
- Earliest claimed: 2012-11-20
- Assignees: Arkema France
- Applicants: Arkema France
- Inventors: Beatrice Boussand
- Web page: https://patentgrep.com/patent/US9752069B2

## CPC

- C09K 5/045: {containing only fluorine as halogen}
- F25B 1/00: Compression machines, plants or systems with non-reversible cycle (F25B3/00, F25B5/00, F25B6/00, F25B7/00, F25B9/00 take precedence)
- C09K 2205/122: Halogenated hydrocarbons
- C09K 2205/22: All components of a mixture being fluoro compounds
- C09K 2205/40: Replacement mixtures
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS

## Abstract

Refrigerant fluids that can be used in different types of compression systems. A composition including between 36 and 39 wt. % of difluromethane (HFC-32), between 28 and 32 wt. % of pentafluoroethane (HFC-125), and between 31 and 35 wt. % of tetrafluoroethane (HFC-134a). The composition may be used as a replacement for R-404A.

## Claims

### Claim 1

A composition comprising:
a. from 36 to 39% by weight of difluoromethane (HFC-32);
b. from 28 to 32% by weight of pentafluoroethane (HFC-125);
c. from 31 to 35% by weight of tetrafluoroethane (HFC-134a).

### Claim 2 (depends on 1)

The composition as claimed in claim 1, in which the sum of the weights of the compounds HFC-32, HFC-125 and HFC-134a is equal to 100%.

### Claim 3 (depends on 1)

The composition as claimed in claim 1, consisting of:
a. 37% by weight of difluoromethane (HFC-32);
b. 30% by weight of pentafluoroethane (HFC-125);
c. 33% by weight of tetrafluoroethane (HFC-134a).

### Claim 4 (depends on 1)

A refrigeration process comprising the use of a composition as claimed in claim 1 as refrigerant.

### Claim 5 (depends on 4)

The refrigeration process use as claimed in claim 4, wherein the refrigerant is a replacement for R-404A.

### Claim 6 (depends on 1)

A refrigeration process comprising the following stages:
a. condensation of a composition as claimed in claim 1;
b. evaporation of said composition.

### Claim 7 (depends on 6)

The process as claimed in claim 6, in which the condensation stage is carried out at a temperature of greater than 13° C.

### Claim 8 (depends on 6)

The process as claimed in claim 6, in which the evaporation stage is carried out at a temperature of less than or equal to −10° C.

### Claim 9 (depends on 1)

A device for transfer of heat in a compression cycle including the composition as claimed in claim 1.

### Claim 10 (depends on 6)

The process as claimed in claim 6, in which the condensation stage is carried out at a temperature of greater than 24° C.

### Claim 11 (depends on 10)

The process as claimed in claim 10, in which the evaporation stage is carried out at a temperature of less than or equal to −10° C.

### Claim 12 (depends on 7)

The process as claimed in claim 7, in which the evaporation stage is carried out at a temperature of less than or equal to −10° C.