# US 2013/0251981 A1 · Infrared ray blocking multi-layered structure insulating film having thermal anisotropy > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0251981 A1 - Document ID: US20130251981A1 - Status: Published application - Kind: A1 - Application number: 13/849,916 - Filed: 2013-03-25 - Published: 2013-09-26 - Earliest claimed: 2012-03-23 - Assignees: Korea Institute of Industrial Technology - Inventors: Kyung Ho CHOI; Sangkug LEE; Gyo Jic SHIN - Web page: https://patentgrep.com/patent/US20130251981A1 ## CPC - E04B 1/78: Heat insulating elements {(E04B1/7662 takes precedence)} - G02B 5/208: {for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation} - G02B 5/22: Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} - Y10T 428/256: Heavy metal or aluminum or compound thereof - Y10T 428/31609: Particulate metal or metal compound-containing - Y10T 428/31938: Polymer of monoethylenically unsaturated hydrocarbon - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention relates to an infrared blocking multi-layered insulating film having thermal anisotropy, the film comprising an infrared absorption layer comprising at least one of perovskite oxide dispersed sol, metallic oxide dispersed sol, and ITO or ATO; a thermal resistance layer located on or above one surface of the infrared absorption layer; and an emission layer located on or above another surface of the infrared absorption layer. An infrared blocking multi-layered insulating film having thermal anisotropy according to the present invention may control heat flow, thereby generating excellent insulating effect. ## Claims ### Claim 1 Infrared blocking multi-layered insulating film having thermal anisotropy, the film comprising: an infrared absorption layer comprising at least one of perovskite oxide dispersed sol, metallic oxide dispersed sol, and ITO or ATO; a thermal resistance layer located on or above one surface of the infrared absorption layer; and an emission layer located on or above another surface of the infrared absorption layer. ### Claim 2 (depends on 1) The infrared blocking multi-layered insulating film according to claim 1, wherein the emission layer is arranged in a heat source direction. ### Claim 3 (depends on 1) The infrared blocking multi-layered insulating film according to claim 1, wherein the perovskite oxide dispersed sol of the infrared ray absorption layer is AxByOz dispersed sol, A is Na, Cs or Li, and B is Mo or W. ### Claim 4 (depends on 3) The infrared blocking multi-layered insulating film according to claim 3, wherein a ratio of the x and y is 1:2.5 to 1:4, and a ratio of the y and z is 1:2.8 to 1:3.2. ### Claim 5 (depends on 1) The infrared blocking multi-layered insulating film according to claim 1, wherein the metallic oxide dispersed sol of the infrared absorption layer is molybdenum dioxide dispersed sol. ### Claim 6 (depends on 1) The infrared blocking multi-layered insulating film according to claim 1, wherein the molybdenum dioxide dispersed sol is composed having ammonium molybdate as a precursor. ### Claim 7 (depends on 1) The infrared blocking multi-layered insulating film according to claim 1, wherein the perovskite oxide dispersed sol or the metallic oxide dispersed sol comprises perovxkite oxide or metallic oxide, dispersion agent comprising acrylate block copolymer, and binder and organic solvent. ### Claim 8 (depends on 7) The infrared blocking multi-layered insulating film according to claim 7, wherein the perovskite oxide or the metallic oxide is 1.0 to 5.0 weight %, the dispersion agent is 1.0 to 5.0 weight %, the binder is 30 to 87 weight %, and the organic solvent is 10 to 60 weight %. ### Claim 9 (depends on 7) The infrared blocking multi-layered insulating film according to claim 7, wherein the binder is photocurable resin compound comprising urethane acrylate. ### Claim 10 (depends on 1) The infrared blocking multi-layered insulating film according to claim 1, wherein a dispersed particle size of the perovskite oxide dispersed sol or the metallic oxide dispersed sol is 20 to 110 nm. ### Claim 11 (depends on 1) The infrared blocking multi-layered insulating film according to claim 1, wherein the thermal resistance layer comprises at least one of nano pore formation material or nano clay. ### Claim 12 (depends on 11) The infrared blocking multi-layered insulating film according to claim 11, wherein the nano pore formation material comprises two or more material having different thermal resistance. ### Claim 13 (depends on 11) The infrared blocking multi-layered insulating film according to claim 11, wherein the nano pore formation material comprises polyimide and pore inducing polymer. ### Claim 14 (depends on 3) The infrared blocking multi-layered insulating film according to claim 3, wherein the pore inducing polymer is at least one of polymethyl methacrylate, polyvinyl alcohol, and polyvinylpyrrolidone. ### Claim 15 (depends on 13) The infrared blocking multi-layered insulating film according to claim 13, wherein a particle size of the pore inducing polymer is 0.05 μm to 3 μm. ### Claim 16 (depends on 11) The infrared blocking multi-layered insulating film according to claim 11, wherein in a case where the thermal resistance layer comprises nano pore formation material and nano clay, the nano clay is 1 to 5 part by weight to 100 part by weight of the nano pore formation material. ### Claim 17 (depends on 16) The infrared blocking multi-layered insulating film according to claim 16, wherein the nano pore formation material comprises polyimide and pore inducing polymer. ### Claim 18 (depends on 17) The infrared blocking multi-layered insulating film according to claim 17, wherein a content ratio of the nano clay and the pore inducing polymer is 1:2 to 1:4. ### Claim 19 (depends on 1) The infrared blocking multi-layered insulating film according to claim 1, wherein the emission layer comprises a carbon nano tube.