Polymeric composition for the neutralization of noxious agents

• US 8,920,825 B2
• Filed: 01/02/2014
• Issued: 12/30/2014
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: Stedfast, Inc., U.S. Army Natick Soldier Research, Development and Engineering Center Chemical Technology Team
• Original Assignee: Stedfast, Inc., U.S. Army Natick Soldier Research, Development and Engineering Center Chemical Technology Team
• Inventors: Benaddi, Hamid, Schreuder-Gibson, Heidi
• Primary Examiner(s): ANTHONY, JOSEPH DAVID
• Application Number:
  US14/146,539
• Publication Number:
  US 20140309101A1
• Time in Patent Office: 362 Days
• Field of Search: None
• US Class Current: 424/406
• CPC Class Codes: A62D 5/00 Composition of materials for coverings or clothing affording protection against harmful chemical agents
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 428/249955 Void-containing component partially impregnated with adjacent component
• CPC Class Codes: Y10T 428/249956 Void-containing component is inorganic
• CPC Class Codes: Y10T 428/249981 Plural void-containing components
• CPC Class Codes: Y10T 428/249985 Composition of adhesive or bonding component specified
• CPC Class Codes: Y10T 428/249991 Synthetic resin or natural rubbers
• CPC Class Codes: Y10T 428/31511 Of epoxy ether
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31583 Nitrile monomer type [polyacrylonitrile, etc.]
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31909 Next to second addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31928 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer

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

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.