Siloxane and glucoside surfactant formulation for fire-fighting foam applications
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.
1. A method comprising:
forming a foam from 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 and y are independently selected non-negative integers;
wherein R is an organic group or H; and
wherein R′ is a siloxane group; and
applying the foam to a fire.
2. The method of claim 1 , wherein the first surfactant has the formula:
3. The method of claim 1 , wherein m is from 2 to 50.
4. The method of claim 1 , wherein n is from 1 to 20.
5. The method of claim 1 , wherein x is from 0 to 4.
6. The method of claim 1 , wherein y is from 0 to 5.
7. The method of claim 1 , wherein R is CH 3 — or H—.
8. The method 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.
9. The method 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.
10. The method of claim 1 , wherein the first surfactant has a concentration in the composition of up to 1.0 wt. %.
11. The method 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.
12. The method of claim 1 , wherein the second surfactant has a concentration in the composition of up to 1.0 wt. %.
13. The method of claim 1 , wherein the composition further comprises:
a solvent having the formula:
wherein p and z are positive integers.
14. The method of claim 13 , wherein p is from 4 to 12.
15. The method of claim 13 , wherein z is from 1 to 40.
16. The method of claim 13 , wherein the solvent as a concentration in the composition of up to 1 wt. %.
17. The method of claim 1 , further comprising:
applying the foam to a fire in an amount sufficient to extinguish the fire.