Blast mitigation foam concentrates and foams made therefrom

Patent metadata

Field	Value
Publication number	US-10843154-B1
Application number	US-201715676628-A
Country	US
Kind code	B1
Filing date	Aug 14, 2017
Priority date	Aug 14, 2017
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

The present disclosure is directed to highly concentrated foam formulations for blast suppression and dispersion mitigation. for use in responding to a terrorism incident involving a blast dispersion device. The foam formulation is more concentrated and more stable than current blast suppression foams, which reduces the logistics burden on the user.

First claim

What is claimed is:

1. A blast foam concentrate, consisting essentially of:
an anionic surfactant foaming agent;
an anionic polymer;
a nonionic polymer;
a fatty alcohol foam stabilizer;
a dispersing agent; and
1-4 wt % water;
wherein the blast foam concentrate contains no water-soluble or water-miscible alcohols.

2. The concentrate of claim 1 , wherein the dispersing agent comprises a glycol and a glycol ether.

3. The concentrate of claim 2 , wherein the glycol is selected from the group consisting of glycerin, propylene glycol, hexylene glycol and ethylene glycol.

4. The concentrate of claim 2 , wherein the glycol ether is selected from the group consisting of diethylene glycol monobutyl ether and tripropylene glycol methyl ether.

5. The concentrate of claim 1 , wherein the anionic surfactant foaming agent comprises a first and a second anionic surfactant.

6. The concentrate of claim 5 , wherein the first anionic surfactant is selected from the group consisting of sodium dodecyl sulfate, carboxylic acid salts, sulfonic acid salts, sulfuric acid ester salts, and phosphoric acid esters.

7. The concentrate of claim 5 , wherein the first anionic surfactant is sodium dodecyl sulfate.

8. The concentrate of claim 5 , wherein the second anionic surfactant is selected from the group consisting of alpha olefin sulfonates, carboxylic acid salts, sulfonic acid salts, sulfuric acid ester salts, and phosphoric acid esters.

9. The concentrate of claim 5 , wherein the second anionic surfactant is an alpha olefin sulfonate.

10. The concentrate of claim 1 , wherein the anionic polymer is selected from the group consisting of xanthan gum, guar gum, agar, carrageenan, sodium alginate, caseinate, and natural or synthetic polysaccharide polymers.

11. The concentrate of claim 1 , wherein the nonionic polymer is selected from the group consisting of 2-hydroxyethylcellulose, carboxymethyl cellulose, polyanionic cellulose, hydroxymethylcellulose, hydroxypropylcellulose, and hydroxypropylmethyl cellulose.

12. The concentrate of claim 1 , wherein the fatty alcohol is selected from the group consisting of n-dodecanol, n-tetradecanol, n-tridecanol, and n-hexadecanol.

13. A blast foam concentrate, consisting essentially of:
30-50 wt % anionic surfactant foaming agent;
5-15 wt % polymer component comprising an anionic and a nonionic polymer;
greater than 0 wt % to 5 wt % of a fatty alcohol foam stabilizer;
25-45 wt % dispersing agent; and
1-4 wt % water;
wherein the blast foam concentrate contains no water-soluble or water-miscible alcohols.

14. The concentrate of claim 13 , wherein the dispersing agent comprises a glycol and a glycol ether.

15. The concentrate of claim 14 , wherein the glycol is selected from the group consisting of glycerin, propylene glycol, hexylene glycol and ethylene glycol.

16. The concentrate of claim 14 , wherein the glycol ether is selected from the group consisting of diethylene glycol monobutyl ether and tripropylene glycol methyl ether.

17. The concentrate of claim 13 , wherein the anionic surfactant foaming agent comprises a first and a second anionic surfactant.

18. The concentrate of claim 13 , wherein the first anionic surfactant is selected from the group consisting of sodium dodecanyl sulfate, carboxylic acid salts, sulfonic acid salts, sulfuric acid ester salts, and phosphoric acid esters.

19. The concentrate of claim 17 , wherein the first anionic surfactant is sodium dodecyl sulfate.

20. The concentrate of claim 17 , wherein the second anionic surfactant is selected from the group consisting of alpha olefin sulfonates, carboxylic acid salts, sulfonic acid salts, sulfuric acid ester salts, and phosphoric acid esters.

21. The concentrate of claim 17 , wherein the second anionic surfactant is an alpha olefin sulfonate.

22. The concentrate of claim 17 , wherein the anionic polymer is selected from the group consisting of xanthan gum, guar gum, agar, carrageenan, sodium alginate, caseinate, and natural or synthetic polysaccharide polymers.

23. The concentrate of claim 17 , wherein the nonionic polymer is selected from the group consisting of 2-hydroxyethylcellulose, carboxymethyl cellulose, polyanionic cellulose, hydroxymethylcellulose, hydroxypropylcellulose, and hydroxypropylmethyl cellulose.

24. The concentrate of claim 17 , wherein fatty alcohol is selected from the group consisting of n-dodecanol, n-tetradecanol, n-tridecanol, and n-hexadecanol.

25. A blast foam solution comprising a mixture of between 1% and 3% (by volume) blast foam concentrate and remainder (by volume) water; wherein the blast foam concentrate consists essentially of:
an anionic surfactant foaming agent;
an anionic polymer;
a nonionic polymer;
a fatty alcohol foam stabilizer;
a dispersing agent; and
water;
wherein the blast foam concentrate contains no water-soluble or water-miscible alcohols.

26. The concentrate of claim 25 , wherein the dispersing agent comprises a glycol and a glycol ether.

27. The concentrate of claim 26 , wherein the glycol is selected from a group consisting of glycerin, propylene glycol, hexylene glycol and ethylene glycol.

28. The concentrate of claim 25 , wherein the glycol ether is selected from a group consisting of diethylene glycol monobutyl ether and tripropylene glycol methyl ether.

29. The concentrate of claim 25 , wherein the anionic surfactant foaming agent comprises a first and a second anionic surfactant.

30. The concentrate of claim 29 , wherein the first anionic surfactant is selected from a group consisting of sodium dodecyl sulfate, carboxylic acid salts, sulfonic acid salts, sulfuric acid ester salts, and phosphoric acid esters.

31. The concentrate of claim 29 , wherein the first anionic surfactant is sodium dodecyl sulfate.

32. The concentrate of claim 29 , wherein the second anionic surfactant is selected from a group consisting of alpha olefin sulfonates, carboxylic acid salts, sulfonic acid salts, sulfuric acid ester salts, and phosphoric acid esters.

33. The concentrate of claim 29 , wherein the second anionic surfactant is an alpha olefin sulfonate.

34. The concentrate of claim 25 , wherein the anionic polymer is selected from the group consisting of xanthan gum, guar gum, agar, carrageenan, sodium alginate, caseinate, and natural or synthetic polysaccharide polymers.

35. The concentrate of claim 25 , wherein the nonionic polymer is selected from the group consisting of 2-hydroxyethylcellulose, carboxymethyl cellulose, polyanionic cellulose, hydroxymethylcellulose, hydroxypropylcellulose, and hydroxypropylmethyl cellulose.

36. The concentrate of claim 25 , wherein the fatty alcohol is selected from a group consisting of n-dodecanol, n-tetradecanol, n-tridecanol, and n-hexadecanol.

Assignees

• Nat Tech & Eng Solutions Sandia Llc

Inventors

• Burton Patrick D
• Tucker Mark D
• Frakes Keith E

Classifications

• C09K23/018 Primary

  Mixtures of two or more different organic oxygen-containing compounds · CPC title

• F42D5/045

  Detonation-wave absorbing or damping means · CPC title

• C08J2401/28

  Alkyl ethers · CPC title

• C08J2305/00

  Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00 · CPC title

• C08J9/0061 Primary

  characterized by the use of several polymeric components · CPC title