Siloxane and glucoside surfactant formulation for fire-fighting foam applications

Patent metadata

Field	Value
Publication number	US-11117008-B2
Application number	US-201916356254-A
Country	US
Kind code	B2
Filing date	Mar 18, 2019
Priority date	Apr 24, 2018
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

Disclosed is a firefighting composition of the surfactants below and water. The values of m, n, x, and y are independently selected positive integers. R is an organic group. R′ is a siloxane group.

First claim

What is claimed is:

1. A composition comprising:
a first surfactant having the formula:

a second surfactant having the formula:

and
water;
wherein m and n are independently selected positive integers;
wherein x is a non-negative integer;
wherein y is an integer from 0 to 3;
wherein R is an organic group or H; and
wherein R′ is a siloxane group.

2. The composition of claim 1 , wherein the first surfactant has the formula:

3. The composition of claim 1 , wherein m is from 2 to 50.

4. The composition of claim 1 , wherein n is from 1 to 20.

5. The composition of claim 1 , wherein x is from 0 to 4.

6. The composition of claim 1 , wherein R is CH 3 — or H—.

7. The composition of claim 1 , wherein the composition comprises more than one of the first surfactants or the second surfactants having different values of m, n, x, or y.

8. The composition of claim 1 , wherein the first surfactant has a concentration in the composition that is at least the critical micelle concentration of the first surfactant.

9. The composition of claim 1 , wherein the first surfactant has a concentration in the composition of up to 1.0 wt. %.

10. The composition of claim 1 , wherein the second surfactant has a concentration in the composition that is at least the critical micelle concentration of the second surfactant.

11. The composition of claim 1 , wherein the second surfactant has a concentration in the composition of up to 1.0 wt. %.

12. The composition of claim 1 , wherein the composition further comprises:
a solvent having the formula:

wherein p and z are positive integers.

13. The composition of claim 12 , wherein p is from 4 to 12.

14. The composition of claim 12 , wherein z is from 1 to 40.

15. The composition of claim 12 , wherein the solvent as a concentration in the composition of up to 1 wt. %.

16. A method comprising:
forming a foam from the composition of claim 1 .

17. The method of claim 16 , further comprising:
applying the foam to a fire.

18. The method of claim 16 , further comprising:
applying the foam to a fire in an amount sufficient to extinguish the fire.

19. A method comprising:
forming a composition of a first surfactant, a second surfactant, and water;
wherein the first surfactant has the formula:

wherein the second surfactant has the formula:

and
water;
wherein m and n are independently selected positive integers;
wherein x is a non-negative integer;
wherein y is an integer from 0 to 3;
wherein R is an organic group or H; and
wherein R′ is a siloxane group.

20. The method of claim 19 , wherein the first surfactant has the formula:

21. The method of claim 19 , wherein the composition further comprises:
a solvent having the formula:

wherein p and z are positive integers.

Assignees

• Us Gov Sec Navy

Inventors

• Ananth Ramagopal
• Snow Arthur W
• Hinnant Katherine
• Giles Spencer L

Classifications

• A62D1/0071 Primary

  Foams · CPC title

• A62C99/0036

  using foam · CPC title

• A62C5/02 Primary

  of foam · CPC title