Fire extinguishing compositions, systems and methods

Patent metadata

Field	Value
Publication number	US-10434347-B2
Application number	US-201815974596-A
Country	US
Kind code	B2
Filing date	May 8, 2018
Priority date	May 8, 2017
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

Disclosed are fire extinguishants comprising from about 20% to about 80% by weight of 1-chloro-3,3,3-trifluoropropene (HFO-1233zd) and from about 20% to about 80% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12), and to methods, systems and containers which use the fire extinguishants.

First claim

The invention claimed is:

1. A fire extinguishant comprising from about 20% to about 80% by weight of trans-1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and from about 20% to about 80% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12), wherein the amount of the transHFO-1233zd and and FKF-1-12 together comprise at least about 80% by weight of the fire extinguishant.

2. The fire extinguishant of claim 1 , wherein the transHFO-1233zd and FK5-1-12 together comprise at least about 90% by weight of the fire extinguishant.

3. The fire extinguishant of claim 1 , consisting essentially of transHFO-1233zd and FK5-1-12.

4. The fire extinguishant of claim 1 comprising from about 50% to about 80% by weight of transHFO-1233zd and from about 20% to about 50% by weight of FK5-1-12.

5. The fire extinguishant of claim 1 comprising from about 40% to about 60% by weight of transHFO-1233zd and from about 40% to about 60% by weight of FK5-1-12.

6. The fire extinguishant of claim 5 , wherein the transHFO-1233zd and FK5-1-12 together comprise at least about 90% by weight of the fire extinguishant.

7. The fire extinguishant of claim 6 comprising about 50% by weight of transHFO-1233zd and about 50% by weight of FK5-1-12.

8. A method of extinguishing a flame comprising:
(a) providing a fire extinguishant comprising from about 20% to about 80% by weight of trans-1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and from about 20% to about 80% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12), wherein the amount of the HFO-1233zd and FK5-1-12 together comprise at least about 80% by weight of the fire extinguishant; and
(b) applying said fire extinguishant to the flame in an amount to produce a concentration in air of not greater than about 6 volume %.

9. The method of claim 8 wherein said fire extinguishants (i) has a boiling point of less than about 25° C. and (ii) produces a fire extinguishment speed of about 30 seconds or less.

10. The method of claim 9 wherein said applying step produces a concentration of said fire extinguishant in air of not greater than about 5 volume %.

11. The method of claim 10 wherein said applying comprises applying said fire extinguishant to an area having a temperature above about 80° F. and a relative humidity above about 70%.

12. The method of claim 11 , wherein the fire extinguishant consists of HFO-1233zd(E) and FK5-1-12.

13. The method of claim 11 , wherein said fire extinguishant produces a fire extinguishment speed of about 15 seconds or less.

Assignees

• Honeywell Int Inc

Inventors

• Richard Robert Gerard
• Singh Rajiv Ratna
• Hulse Ryan

Classifications

• A62D1/0092

  Gaseous extinguishing substances, e.g. liquefied gases, carbon dioxide snow (freons or halons A62D1/005) · CPC title

• A62C2/00 Primary

  Fire prevention or containment (A62C3/00 takes precedence; flame traps A62C4/00) · CPC title

• A62D1/0085

  containing perfluoroalkyl-terminated surfactant · CPC title

• A62D1/0028 Primary

  Liquid extinguishing substances (A62D1/0092 takes precedence) · CPC title

• A62D1/0057 Primary

  Polyhaloalkanes (A62D1/005 takes precedence) · CPC title