IP Library › Granted Patent US 11,420,083
Granted Patent B2
US 11,420,083 · App. 17/569,931 · Granted Aug 23, 2022

Zwitterionic and glucoside surfactant formulations for fire-fighting foam applications

Inventors: Ramagopal Ananth (Bryn Mawr, PA); Arthur W. Snow (Alexandria, VA); Spencer L. Giles (Lorton, VA); Matthew Davis (Ridgecrest, CA); Katherine Hinnant (Washington, DC)
Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
A62D1/0042A62D1/0071
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,420,083
App. No.
17/569,931
Granted
Aug 23, 2022
Kind
B2
Abstract

A composition having water and first and second surfactants having the formulas below. The values m and y are non-negative integers, and n and x are positive integers. R is a zwitterionic group. R′ is a siloxane group. A foam of the composition may be used to extinguish a fire.

Claims (42)

1. A composition comprising:

a first surfactant having the formula:

a second surfactant having the formula:

and

water;

wherein m, x, and y are independently selected non-negative integers;

wherein n is a positive integer;

wherein R is a zwitterionic group; 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 R is a sulfobetaine group or a chlorobetaine group.

4. The composition of claim 1 , wherein m is from 0 to 20.

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

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

7. The composition of claim 1 , wherein y is from 0 to 5.

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

9. The composition of claim 1 , wherein first surfactant and the second surfactant have a wt. % ratio of 0.03 to 5.

10. The composition of claim 1 , wherein the composition further comprises:

a solvent having the formula:

wherein p and z are positive integers.

11. The composition of claim 10 , wherein p is from 1 to 8.

12. The composition of claim 10 , wherein z is from 1 to 6.

13. A method comprising:

mixing the composition of claim 1 with air to form a foam.

14. The method of claim 13 , further comprising:

applying the foam to a fire.

15. The method of claim 13 , further comprising:

applying the foam to a fire in an amount sufficient to extinguish the fire.

16. A method comprising:

mixing a first surfactant, a second surfactant, and water to form a composition;

wherein the first surfactant has the formula:

wherein the second surfactant has the formula:

and

water;

wherein m, x, and y are independently selected non-negative integers;

wherein n is a positive integer;

wherein R is a zwitterionic group; and

wherein R′ is a siloxane group.

17. The method of claim 16 , wherein the first surfactant has the formula:

18. The method of claim 16 , wherein the composition further comprises:

a solvent having the formula:

wherein p and z are positive integers.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 8, 2022
From: ANANTH, RAMAGOPAL; GILES, SPENCER; DAVIS, MATTHEW; HINNANT, KATHERINE; SNOW, ARTHUR W.
To: THE GOVERNMENT OF THE UNITED STATES, AS RESPRESENTED BY THE SECRETARY OF THE NAVY
Reel/Frame 058928/0127 →
Continuity (2)
Provisional Application 63134444 · Jan 6, 2021
Related Publication 20220212047A1 · Jul 7, 2022
Cited By (1)
US 12,290,711