# US 9,475,263 B1 · Breathable chemical, biological, radiation, and/or nuclear protection fabric or material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,475,263 B1 - Document ID: US9475263B1 - Status: Granted - Kind: B1 - Application number: 12/926,201 - Filed: 2010-11-02 - Granted: 2016-10-25 - Earliest claimed: 2009-11-03 - Assignees: Materials Modification, Inc. - Applicants: Krishnaswamy Kasthuri Rangan; Tirumalai Srinivas Sudarshan - Inventors: Krishnaswamy Kasthuri Rangan; Tirumalai Srinivas Sudarshan - Web page: https://patentgrep.com/patent/US9475263B1 ## CPC - B32B 27/00: Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)} - G21F 1/00: Shielding characterised by the composition of the materials - G21F 3/00: Shielding characterised by its physical form, e.g. granules, or shape of the material - G21F 3/02: Clothing - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - G21F: PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR (radiation protection by pharmaceutical means A61K8/00, A61Q17/04; in cosmonautic vehicles B64G1/54; combined with a reactor G21C11/00; combined with X-ray tubes H01J35/16; combined with X-ray apparatus H05G1/02) ## Abstract A protective fabric or material includes a base material and at least one inorganic filler selected from the group consisting of a chemical decontamination agent, a biological decontamination agent, an electromagnetic radiation shielding agent, an antimicrobial agent, a self-decontaminating agent, a decontamination catalyst, a carbon dioxide absorbing agent, and a combination thereof. ## Claims ### Claim 1 A breathable material for protection against electromagnetic radiation, the breathable material consisting of a single layer, the single layer comprising: a) a base material comprising pores, wherein the pores are entirely filled with an inorganic filler and a breathability agent; b) said inorganic filler comprising at least one radiation shielding agent selected from the group consisting of bismuth, bismuth compound, and a combination thereof; c) said breathability agent comprising a hydrophilic polymer gel of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS), d) wherein the breathable material for protection against electromagnetic radiation comprises a water vapor transport rate ranging from about 100 g/m2/day to about 1871 g/m2/day, and wherein the breathable material for protection against electromagnetic radiation is effective against radiation ranging from x-rays to gamma rays. ### Claim 2 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said base material comprises at least one member selected from the group consisting of track-etched polymeric membrane, microporous membrane, polymer sheet, porous polymer sheet, inorganic membrane, inorganic fabric, organic fabric, and a combination thereof. ### Claim 3 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said base material comprises at least one member selected from the group consisting of polyester, nylon, aramid, cotton, and a combination thereof. ### Claim 4 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said base material comprises a woven or non-woven material. ### Claim 5 (depends on 1) An article comprising the breathable material for protection against electromagnetic radiation of claim 1. ### Claim 6 (depends on 1) A suit, blanket, tent, glove, boot, mask, covering, an article or structure mimicking a naturally occurring article or structure, or an article of clothing comprising the breathable material for protection against electromagnetic radiation of claim 1. ### Claim 7 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said inorganic filler further comprises at least one metal selected from the group consisting of lead, platinum, gold, copper, tin, antimony, silver, and a combination thereof. ### Claim 8 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said inorganic filler further comprises at least one metal oxide selected from the group consisting of bismuth oxide, boron oxide, lead oxide, iron oxide, chrome oxide, titanium oxide, silicon oxide, aluminum oxide, and a combination thereof. ### Claim 9 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said inorganic filler comprises nanoparticles, microparticles, nanowires, nanotubes, nanoscrolls, or nanoflakes, or a combination thereof. ### Claim 10 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said inorganic filler comprises crystalline material, amorphous material, or a combination thereof. ### Claim 11 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said inorganic filler comprises gel, particulate material, powder, liquid, or a combination thereof. ### Claim 12 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, further comprising: a) a breathability enhancing agent comprising a hydrophilic inorganic material. ### Claim 13 (depends on 12) The breathable material for protection against electromagnetic radiation of claim 12, wherein: a) the hydrophilic inorganic compound comprises magnesium hydroxide. ### Claim 14 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) the pores have an average diameter of about 10 nm to about 5 micron. ### Claim 15 (depends on 1) The breathable material for protection against electromagnetic radiation of claim 1, wherein: a) said inorganic filler further comprises at least one inorganic agent selected from the group consisting of lead oxide, iron oxide, chrome oxide, titania, alumina, titanium oxide, zinc oxide, magnesium oxide, magnesium hydroxide, silver, silver compound, calcium oxide, calcium hydroxide, aluminum oxide, tin, tin compound, antimony, antimony compound, tungsten, tungsten compound, boron, boron compound, silicon, silicon compound, lead, lead compound, platinum, platinum compound, gold, gold compound, copper, copper compound, uranium, uranium compound, and a combination thereof.