IP Library › Granted Patent US 8,920,825
Granted Patent B2
US 8,920,825 · App. 14/146,539 · Granted Dec 30, 2014

Polymeric composition for the neutralization of noxious agents

Inventors: Hamid Benaddi (Quebec, CA); Heidi Schreuder-Gibson (Holliston, MA)
Assignees: Stedfast, Inc.; U.S. Army Natick Soldier Research, Development and Engineering Center, Chemical Technology Team
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Quick Facts
Patent No.
US 8,920,825
App. No.
14/146,539
Granted
Dec 30, 2014
Kind
B2
Abstract

The present application is directed to a novel composition which acts as a barrier to noxious agents while adding self-detoxifying catalytic treatments to neutralize the noxious and harmful warfare agents when applied for example on a fabric, or other solid support.

Claims (34)

1. A composition for protection against harmful or noxious agents comprising:

a) from 1 to 95% by weight of a porous media;

b) from 2 to 60% by weight of a vinyl amine and polyvinyl alcohol copolymer;

c) from 0.1 to 10% weight of a surfactant agent;

d) from 0.1 to 10% by weight of an epoxy resin or of a crosslinking agent;

e) from 5 to 20% by weight of a polyvinyl acetate polymer or copolymer;

f) from 0.1 to 10% by weight of a defoamer agent; and

g) from 10 to 90% by weight of water.

2. The composition of claim 1 , wherein said harmful or noxious agents are neutralized or decontaminated when they are in contacted with said composition.

3. The composition of claim 1 further comprising:

h) from 0 to 20% by weight of a polyvinyl alcohol polymer or copolymer;

i) from 0 to 60% by weight of a polyurethane polymer;

j) from 0 to 60% by weight of an acrylic polymer; and

k) from 0 to 5% by weight of one or more metal salts or oxides.

4. The composition of claim 1 , wherein said porous media is activated carbon particles or zeolite.

5. The composition of claim 4 , wherein said activated particles are in the form of powder, beads, granules or nanotubes.

6. The composition of claim 1 , wherein said porous media is a carbon fabric.

7. The composition of claim 6 , wherein said carbon fabric is in the form of a fiber, woven cloth, non-woven cloth, knit cloth or filter.

8. The composition of claim 1 , wherein said porous media is a combination of activated carbon and zeolite.

9. The composition of claim 1 , wherein the polyvinyl acetate polymer or copolymer is ethylene vinyl acetate.

10. A method of preparing a laminated support using a laminate composition of claim 1 ; said method comprising casting said laminate composition on a solid support to yield said laminated support and curing said laminated support.

11. A laminated support comprising one or more layers of the composition of claim 1 .

12. The laminated support of claim 11 combined with one or more layers of the composition comprising:

a) from 2 to 60% by weight of a vinyl amine and polyvinyl alcohol copolymer;

b) from 0 to 10% by weight of a surfactant agent;

c) from 0 to 10% by weight of an epoxy resin or of a crosslinking agent;

d) from 0 to 90% by weight of a polyvinyl acetate polymer or copolymer;

e) from 0 to 20% by weight of a polyvinyl alcohol polymer or copolymer;

f) from 0 to 60% by weight of a polyurethane polymer;

g) from 0 to 60% by weight of an acrylic polymer;

h) from 0 to 5% by weight of one or more metal salts or metal oxides;

i) from 0 to 10% by weight of a defoamer agent; and

j) from 10 to 90% by weight of water.

13. The laminated support of claim 11 wherein said porous media used is a combination of activated carbon and zeolite.

Assignments (1)
SECURITY INTEREST Recorded Apr 4, 2022
From: NARCOTE CANADA CORPORATION
To: CCP AGENCY, LLC, AS AGENT
Reel/Frame 059489/0936 →
Continuity (2)
Continuation 12732881 · Mar 26, 2010
Related Publication 20140309101A1 · Oct 16, 2014