Infrared absorbing compositions and laminates
AssigneeSolutia Inc.
InventorsW. Keith Fisher, Paul D. Garrett, Howard D. Booth, Jr., James R. Moran
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Abstract
Laminates are disclosed having interlayers containing an infrared absorbing amount of lanthanum hexaboride (LaB6) coated on or dispersed in a thermoplastic polymeric matrix. Preferably, the LaB6 is combined with other materials, such as indium tin oxide, antimony tin oxide, organic dyes or pigments in a polymeric matrix of polyvinyl butyral (PVB). Alternatively, LaB6 is coated on a sheet of polyethylene terephthalate and encapsulated with one or more sheets of PVB. The interlayers having LaB6 dispersed therein or coated thereon are advantageously combined with encapsulation layers, reflective layers, dyed layers and/or pigmented layers.
Claims21
A laminate transparent to visible light and absorbing light in the infrared region of the spectrum, comprising
- at least one substrate;
- a reflective film;
- and
- an absorbing sheet having an infrared absorbing amount of lanthanum hexaboride nanoparticles dispersed in a thermoplastic polymeric matrix.
A laminate transparent to visible light and absorbing light in the infrared region of the spectrum comprising:
- a polymer sheet having a coating of lanthanum hexaboride nanoparticles;
- at least one encapsulating layer of thermoplastic polymeric material encapsulating said coated sheet;
- and
- at least one substrate.
A multilayer structure transparent to visible light and absorbing light in the infrared region of the spectrum, comprising:
- a thermoplastic polymeric layer having lanthanum hexaboride nanoparticles dispersed therein or coated thereon;
- and
- at least one additional polymeric layer adjacent said thermoplastic polymeric layer.
An infrared-absorbing visible light transparent composition in sheet form comprising:
- a polymeric matrix material;
- nanoparticulate lanthanum hexaboride dispersed in the polymeric matrix material;
- and
- at least one organic dye or pigment that absorbs light in the visible or near infrared region of the spectrum dispersed in the polymeric matrix material.
Dependencies are inferred from the claim text.