Iodinated anion exchange resin and process for preparing same
The present invention relates to iodinated resins. It relates in particular to a process for preparing a polyiodide-resin wherein an anion exchange resin is contacted with a material capable of donating a member absorbable by the resin so as to convert the resin to the polyiodide-resin. The absorbable member is selected from the group consisting of I.sub.2 and polyiodide ion having a valence of −1. In the process, conversion of the anion exchange resin to the polyiodide-resin is effected at elevated temperate and/or elevated pressure, the elevated temperature being about 100.degree. C. or higher, the elevated pressure being greater than atmospheric pressure. The present invention also relates to a substance comprising an iodine (impregnated) resin as produced by the above process.
1. A filtering mask comprising:
an air permeable source layer incorporating at least one antimicrobial agent for disinfecting a stream of air passing through; and
an air permeable scavenger layer disposed to receive the air passing through the source layer for removing vapors liberated from said source layer.
2. The filtering mask of claim 1 , wherein the scavenger is activated carbon.
3. The filtering mask of claim 1 , wherein the scavenger is a strong base anion exchange resin.
4. The filtering mask of claim 1 , wherein the scavenger is a weak base anion exchange resin.
5. The filtering mask of claim 1 , wherein the filter is adapted to be incorporated into an article of protective wearing apparel.
6. A filtering mask comprising:
an air permeable iodine source layer incorporating an iodinated resin for disinfecting a stream of air passing through; and
an air permeable iodine scavenger layer disposed to receive the air passing through the iodine source lover for removing iodine liberated from said iodine source layer.
7. The filtering mask of claim 6 , wherein the iodine scavenger is activated carbon.
8. The filtering mask of claim 6 , wherein the iodine scavenger is an iodine absorbent resin.
9. The filtering mask of claim 6 , further comprising a cartridge adapted to hold the iodinated resin and the iodine scavenger layer.
10. The filtering mask of claim 9 wherein the cartridge is adapted to fit in a gas mask.
11. The filtering mask of claim 10 wherein the iodinated resin is an iodine demand disinfectant resin.
12. A gasmask having a cartridge therein, said cartridge adapted to hold a bed of antimicrobial agent and a bed of a scavenger material in close proximity to the bed of antimicrobial agent, said cartridge mounted in the gasmask so that the bed of scavenger material is positioned downstream of the bed of antimicrobial agent for air coming towards a wearers face when the mask is worn, such that the stream of air coming into the gasmask contacts the bed of antimicrobial agent before contacting the bed of scavenger which removes any free vapors released by the bed of antimicrobial agent.
13. The gasmask of claim 12 , wherein the antimicrobial agent is an iodinated resin.
14. The gasmask of claim 12 , wherein the scavenger material is activated carbon.
15. The gasmask of claim 12 , wherein the scavenger material is an anion exchange resin.