Heat ray-shielding film, heat ray-shielding laminated transparent base material, heat ray-shielding resin sheet material, automobile and building

Abstract

A heat ray-shielding film has excellent heat-shielding performance and a color tone, and exhibits weather resistance. A heat ray-shielding laminated transparent base material and a heat ray-shielding resin sheet material use the heat ray-shielding film. The heat ray-shielding film and the heat ray-shielding resin sheet material are expressed by a general formula M y WO z , and contain a composite tungsten oxide particle having a hexagonal crystal structure, selected wavelength absorbing material, and thermoplastic resin. The selected wavelength absorbing material has a transmission profile in which a transmittance of a light of a wavelength of 420 nm can be set to 40% or less when a transmittance of a light of a wavelength of 550 nm is 90% or more, and a transmittance of a light of a wavelength of 460 nm is 90% or more.

1 . A heat ray-shielding film containing a composite tungsten oxide particle having a hexagonal crystal structure, a selected wavelength absorbing material, and a thermoplastic resin,
 wherein the composite tungsten oxide is expressed by a general formula MyWOz (wherein M is one or more kinds of element selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, and Cu, satisfying 0.1≦y≦0.5, 2.2≦z≦3.0), and   wherein the selected wavelength absorbing material has a transmission profile in which a transmittance of a light of a wavelength of 420 nm is set to 40% or less when a transmittance of a light of wavelengths of 460 nm and 550 nm is 90% or more,   the selected wavelength absorbing material is one or more kinds selected from a benzotriazole compound, an indole compound, and a benzotriazolyl compound, and   the benzotriazole compound is expressed by [Chemical formula 1] or [Chemical formula 8], R1 in the benzotriazole compound expressed by [Chemical formula 1] is a group expressed by any one selected from [Chemical formula 2] to [Chemical formula 5], R2 in [Chemical formula 2] to [Chemical formula 5] is an alkylene group having 1 to 8 carbon atoms, R3 in [Chemical formula 2] to [Chemical formula 5] is a hydrogen atom or a methyl group, and R4 in [Chemical formula 4] is the alkylene group having 1 to 8 carbon atoms,   
       
         
           
           
               
               
           
         
       
     
     
         2 . The heat ray-shielding film according to  claim 1 , wherein the selected wavelength absorbing material is the indole compound expressed by [Chemical formula 11], wherein R in the indole compound expressed by [Chemical formula 11] is an alkyl group having 1 to 10 carbon atoms or an aralkyl group having 7 to 10 carbon atoms. 
       
         
           
           
               
               
           
         
       
     
     
         3 . The heat ray-shielding film according to  claim 1 , wherein the selected wavelength absorbing material is the indole compound expressed by [Chemical formula 12]. 
       
         
           
           
               
               
           
         
       
     
     
         4 . The heat ray-shielding film according to  claim 1 , wherein a content of the selected wavelength absorbing material in the heat ray-shielding film is 0.01 mass % or more and 2.0 mass % or less. 
     
     
         5 . The heat ray-shielding film according to  claim 1 , wherein the thermoplastic resin is one kind of resin selected from the resin group consisting of polyvinyl acetal resin, vinyl chloride resin, ethylene-vinyl acetate copolymer, or a mixture of two or more kinds of resins selected from the above resin group, or a copolymer of two or more kinds of resins selected from the above resin group. 
     
     
         6 . The heat ray-shielding film according to  claim 1 , wherein the thermoplastic resin is polyvinyl butyral resin, and further contains a plasticizer. 
     
     
         7 . The heat ray-shielding film according to  claim 1 , wherein the composite tungsten oxide particle is at least one kind selected from Cs 0.33 WO 3  and Rb 0.33 WO 3 . 
     
     
         8 . The heat ray-shielding film according to  claim 1 , wherein the composite tungsten oxide particle is a particle having a dispersed particle size of 40 nm or less. 
     
     
         9 . The heat ray-shielding film according to  claim 1 , wherein the heat ray-shielding film further contains an ultraviolet absorber. 
     
     
         10 . The heat ray-shielding film according to  claim 9 , wherein the ultraviolet absorber is one or more kinds selected from a benzotriazole compound and a benzophenone compound. 
     
     
         11 . The heat ray-shielding film according to  claim 9 , wherein a content of the ultraviolet absorber in the heat ray-shielding film is 0.02 mass % or more and 5.0 mass % or less. 
     
     
         12 . The heat ray-shielding film according to  claim 1 , wherein the heat ray-shielding film further contains polyvalent metal salt. 
     
     
         13 . The heat ray-shielding film according to  claim 12 , wherein the polyvalent metal salt is bis (2-ethylbutyrate) magnesium. 
     
     
         14 . A heat ray-shielding resin sheet material, containing a composite tungsten oxide particle expressed by a general formula M y WO z  (wherein M is one or more kinds of element selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, and Cu, satisfying 0.1≦y≦0.5, 2.2≦z≦3.0) and having a hexagonal crystal structure, a selected wavelength absorbing material, and a thermoplastic resin,
 wherein the selected wavelength absorbing material has a transmission profile in which a transmittance of a light of a wavelength of 420 nm can be set to 40% or less when a transmittance of a light of a wavelength of 550 nm is 90% or more, and a transmittance of a light of a wavelength of 460 nm is 90% or more. 
 
     
     
         15 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the selected wavelength absorbing material is one or more kinds selected from a benzotriazole compound, a benzotriazole derivative, a benzophenone compound, a triazine compound, an indole compound, an azomethine compound, a benzotriazolyl compound, and a benzoyl compound. 
     
     
         16 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the selected wavelength absorbing material is the benzotriazole compound expressed by [Chemical formula 1], and R1 in the benzotriazole compound expressed by [Chemical formula 1] is selected from a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxyl group, an amino group, straight or branched chain mono-substituted amino group, straight or branched chain di-substituted amino group, a nitro group, a carboxyl group, an alkylcarbonyloxy alkyl group in which carbon atoms in an alkyl group are each 1 to 8, an alkyloxycarbonyl alkyl group in which the sum of the carbon atoms in the alkyl group is 2 to 10, an aryl group, an acyl group, a sulfo group, a cyano group, a group expressed by [Chemical formula 2], a group expressed by [Chemical formula 3], a group expressed by [Chemical formula 4], and a group expressed by [Chemical formula 5],
 wherein R2 in the group expressed by [Chemical formula 2] to [Chemical formula 5] is an alkylene group having 1 to 8 carbon atoms, and R3 in the group expressed by [Chemical formula 2] to [Chemical formula 5] is the hydrogen atom or a methyl group, and R4 in the group expressed by [Chemical formula 4] is the alkylene group having 1 to 8 carbon atoms.   
       
         
           
           
               
               
           
         
       
     
     
         17 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the selected wavelength absorbing material is one or more kinds selected from the benzotriazole compound expressed by any one of [Chemical formula 6] to [Chemical formula 10]. 
       
         
           
           
               
               
           
         
       
     
     
         18 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the selected wavelength absorbing material is the indole compound expressed by [Chemical formula 11], and R in the indole compound expressed by [Chemical formula 11] is the alkyl group having 1 to 10 carbon atoms or the aralkyl group having 7 to 10 carbon atoms. 
       
         
           
           
               
               
           
         
       
     
     
         19 . The heat-ray shielding resin sheet material according to  claim 14 , wherein the selected wavelength absorbing material is the indole compound expressed by [Chemical formula 12]. 
       
         
           
           
               
               
           
         
       
     
     
         20 . The heat ray-shielding resin sheet material according to  claim 14 , wherein a content of the selected wavelength absorbing material in the heat ray-shielding resin sheet material is 0.01 mass % or more and 2.0 mass % or less. 
     
     
         21 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the thermoplastic resin is one kind of resin selected from the resin group consisting of polyethylene terephthalate resin, polycarbonate resin, acrylic resin, styrene resin, polyamide resin, polyethylene resin, vinyl chloride resin, olefin resin, epoxy resin, polyimide resin, fluorocarbon resin, and ethylene-vinyl acetate copolymer, or a mixture of two or more kinds of resins selected from the resin group, or a copolymer of two or more kinds of resins selected from the resin group. 
     
     
         22 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the composite tungsten oxide particle is at least one kind selected from Cs 0.33 WO 3  and Rb 0.33 WO 3 . 
     
     
         23 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the composite tungsten oxide particle is a particle having a dispersed particle size of 40 nm or less. 
     
     
         24 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the heat ray-shielding resin sheet material further contains an ultraviolet absorber. 
     
     
         25 . The heat ray-shielding resin sheet material according to  claim 24 , wherein the ultraviolet absorber is one or more kinds selected from a benzotriazole compound and a benzophenone compound. 
     
     
         26 . The heat ray-shielding resin sheet material according to  claim 24 , wherein a content of the ultraviolet absorber in the heat ray-shielding resin sheet material is 0.02 mass % or more and 5.0 mass % or less. 
     
     
         27 . The heat ray-shielding resin sheet material according to  claim 14 , wherein the heat ray-shielding resin sheet material further contains an infrared absorbing organic compound. 
     
     
         28 . The heat ray-shielding resin sheet material according to  claim 27 , wherein the infrared absorbing organic compound is one or more kinds selected from a phthalocyanine compound, a naphthalocyanine compound, an imonium compound, a diimonium compound, a polymethine compound, a diphenylmethane compound, a triphenylmethane compound, a quinone compound, an azo compound, a pentadiene compound, an azomethine compound, a squarylium compound, an organometallic complexe, and a cyanine compound. 
     
     
         29 . The heat ray-shielding resin sheet material according to  claim 28 , wherein the infrared absorbing organic compound is at least one kind selected from a phthalocyanine compound and a diimonium compound. 
     
     
         30 . The heat ray-shielding resin sheet material according to  claim 27 , wherein a content of the infrared ray absorbing organic compound is 0.02 mass % or more and 0.2 mass % or less. 
     
     
         31 . The heat ray-shielding resin sheet material according to  claim 14 , wherein yellowness index (YI) calculated based on JIS K 7373 is −20.00 or more and 10.0 or less. 
     
     
         32 . The heat ray-shielding resin sheet material according to  claim 14 , wherein yellowness index (YI) calculated based on JIS K 7373 is −20.00 or more and 5.0 or less. 
     
     
         33 . The heat ray-shielding resin sheet material according to  claim 14 , wherein a visible light transmittance calculated based on JIS R 3106 is 70% or more and a solar transmittance is 32.5% or less. 
     
     
         34 . A heat ray shielding laminated transparent base material, comprising the heat ray-shielding film of  claim 1  interposed between a plurality of transparent base materials. 
     
     
         35 . The heat ray-shielding laminated transparent base material according to  claim 34 , wherein yellowness index (YI) calculated based on JIS K 7373 is −20.00 or more and 10.0 or less. 
     
     
         36 . The heat ray-shielding laminated transparent base material according to  claim 34 , wherein yellowness index (YI) calculated based on JIS K 7373 is −20.00 or more and 5.0 or less. 
     
     
         37 . The heat ray-shielding laminated transparent base material according to  claim 34 , wherein at least one of the transparent base materials is a glass. 
     
     
         38 . An automobile, comprising the heat ray-shielding resin sheet material of  claim 14 , and a heat ray-shielding laminated transparent base material mounted thereon as a window material, the heat ray-shielding laminated transparent base material containing a composite tungsten oxide particle having a hexagonal crystal structure, a selected wavelength absorbing material, and a thermoplastic resin,
 wherein the selected composite tungsten oxide is expressed by a general formula M y WO z  (wherein M is one or more kinds of element selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, and Cu, satisfying 0.1≦y≦0.5, 2.2≦z≦3.0) and   wherein the selected wavelength absorbing material has a transmission profile in which a transmittance of a light of a wavelength of 420 nm can be set to 40% or less when a transmittance of a light of a wavelength of 550 nm is 90% or more, and a transmittance of a light of a wavelength of 460 nm is 90% or more, and   is interposed between a plurality of transparent base materials.   
     
     
         39 . A building, in which the heat ray-shielding resin sheet material of  claim 14 , and a heat ray-shielding laminated transparent base material are used as window materials, the heat ray-shielding laminated transparent base material containing a composite tungsten oxide particle having a hexagonal crystal structure, a selected wavelength absorbing material, and a thermoplastic resin.