Granted Patent B2

US 12,290,711 · App. 18/806,874 · Granted May 6, 2025

Inventors: Ramagopal Ananth (Bryn Mawr, PA); Matthew Davis (Ridgecrest, CA); Katherine Hinnant (Washington, DC); Arthur W. Snow (Alexandria, VA)

Assignee: The Government of the United States of America, as represented by the Secretary of the Navy

A62D1/0071A62C5/022C07F7/0889

Abstract

Claims (48)

1. A compound having the formula:

wherein n is 2 or 3;

wherein R is a C3-C9 alkylene group;

wherein X is —O— or —N(COCH 3 )—; and

wherein c is a positive integer.

2. The compound of claim 1 , wherein the compound is

3. The compound of claim 1 , wherein the compound is

4. The compound of claim 1 , wherein the compound is

5. A composition comprising:

the compound of claim 1 ;

a poly(glucoside)-alkane having the formula:

wherein n is an integer from 1 to 20; and

wherein x is a positive integer; and

water.

6. The composition of claim 5 , further comprising:

a poly(ethylene glycol) monoalkyl ether having the formula:

wherein z is a positive integer; and

wherein p is a positive integer.

7. A method comprising:

mixing the composition of claim 5 with air to form a foam.

8. The method of claim 7 , further comprising:

applying the foam to a fire.

9. The method of claim 7 , further comprising:

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

10. A method comprising:

providing a polysaccharide having the formula:

wherein c is a positive integer;

reacting the polysaccharide with acetic anhydride to form acetate groups, forming a polysaccharide acetate having the formula:

reacting the polysaccharide acetate with propargyl alcohol to form a propargyl compound having the formula:

and

reacting the propargyl compound with an azidoalkyltris(trimethylsiloxy)silane or an azidoalkylbis(trimethylsiloxy)methylsilane to form a compound having the formula:

wherein n is 2 or 3; and

wherein R is a C3-C9 alkylene group.

11. The method of claim 10 , wherein the polysaccharide is maltose.

12. The method of claim 10 , wherein the azidoalkyltris(trimethylsiloxy)silane is 3-azidopropyltris(trimethylsiloxy) silane.

13. The method of claim 10 , wherein the azidoalkylbis(trimethylsiloxy)methylsilane is 3-azidopropylbis(trimethylsiloxy)methylsilane.

14. A method comprising:

providing a polysaccharide having the formula:

wherein c is a positive integer;

reacting the polysaccharide with propargylamine to form a propargyl compound having the formula:

reacting the propargyl compound with acetic anhydride to form acetate groups, forming a polysaccharide acetate having the formula:

and

reacting the polysaccharide acetate with an azidoalkyltris(trimethylsiloxy)silane or an azidoalkylbis(trimethylsiloxy)methylsilane to form a compound having the formula:

wherein n is 2 or 3; and

wherein R is a C3-C9 alkylene group.

15. The method of claim 14 , wherein the polysaccharide is maltose.

16. The method of claim 14 , wherein the azidoalkyltris(trimethylsiloxy)silane is 3-azidopropyltris(trimethylsiloxy)silane.

17. The method of claim 14 , wherein the azidoalkylbis(trimethylsiloxy)methylsilane is 3-azidopropylbis(trimethylsiloxy)methylsilane.

Assignments (1)

Continuity (2)

References Cited (16)