Infrared radiation blocking laminate
First Claim
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1. A laminate for blocking infrared radiation comprising:
- a substrate selected from the group consisting of a transparent glass or a transparent polymer;
at least one infrared radiation blocking layer containing a metal oxide capable of blocking at least 90% of infrared light incident thereon having a wavelength of about 2,000 nanometers, and at least one near infrared radiation blocking layer containing an organic dye, or an inorganic dye, or a combination thereof, capable of blocking at least 90% of near infrared light incident thereon having a wavelength of about 1,000 nanometers;
orat least one combination infrared and near infrared radiation blocking layer wherein both said metal oxide compound and said organic dye, or said inorganic dye, or a combination thereof, are contained therein with said combination layer capable of blocking at least 90% of infrared light incident thereon having a wavelength of about 2,000 nanometers and also capable of blocking at least 90% of near infrared light incident thereon having a wavelength of about 1,000 nanometers;
wherein said at least one infrared radiation blocking layer has a thickness of from about 1 to about 20 microns, wherein said at least one nearinfrared blocking layer has a thickness of from about 0.1 to about 10 microns, and wherein said at least one combination infrared and near infrared radiation blocking layer has a thickness of from about 1 to about 20 microns; and
wherein said laminate is capable of transmitting at least 70% of visible light incident thereupon having a wavelength of 555 nm.
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Abstract
A laminate comprising metal oxide and a dye is effective for blocking at least 90% of infrared radiation at a wavelength of 1000 nm while providing transmission of at least 40% of visible light at a wavelength of 555 nm. The laminate includes a transparent substrate such as glass or plastic. The metal oxide can be applied as a coating to the substrate either separate or with the dye. The laminate can be used on generally any type of window such as automobiles, houses, or buildings to prevent transmission of infrared heat therethrough.
31 Citations
25 Claims
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1. A laminate for blocking infrared radiation comprising:
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a substrate selected from the group consisting of a transparent glass or a transparent polymer; at least one infrared radiation blocking layer containing a metal oxide capable of blocking at least 90% of infrared light incident thereon having a wavelength of about 2,000 nanometers, and at least one near infrared radiation blocking layer containing an organic dye, or an inorganic dye, or a combination thereof, capable of blocking at least 90% of near infrared light incident thereon having a wavelength of about 1,000 nanometers;
orat least one combination infrared and near infrared radiation blocking layer wherein both said metal oxide compound and said organic dye, or said inorganic dye, or a combination thereof, are contained therein with said combination layer capable of blocking at least 90% of infrared light incident thereon having a wavelength of about 2,000 nanometers and also capable of blocking at least 90% of near infrared light incident thereon having a wavelength of about 1,000 nanometers; wherein said at least one infrared radiation blocking layer has a thickness of from about 1 to about 20 microns, wherein said at least one nearinfrared blocking layer has a thickness of from about 0.1 to about 10 microns, and wherein said at least one combination infrared and near infrared radiation blocking layer has a thickness of from about 1 to about 20 microns; and wherein said laminate is capable of transmitting at least 70% of visible light incident thereupon having a wavelength of 555 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of forming a laminate for blocking infrared radiation, comprising the steps of:
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(a) forming an infrared radiation blocking mixture of at least one metal oxide and a polymer; and applying said infrared radiation blocking mixture to a transparent substrate and forming a layer having a thickness of from about 1 to about 20 microns; and forming a near infrared radiation blocking mixture of at least one dye and a polymer; and applying said near infrared radiation blocking mixture to a transparent substrate and forming a thin layer having a thickness of from about 0.1 to about 10 microns;
or(b) forming a combination infrared and near infrared radiation blocking mixture of both said at least one metal oxide and said at least said one dye and a polymer; and applying said combination infrared and near infrared radiation blocking mixture to a substrate and forming a thin coating thereon having a thickness of from about 1 to about 20 microns; wherein said substrate is selected from a group consisting of a transparent glass or a transparent polymer; said infrared radiation blocking layer and said near infrared radiation blocking layer on said substrate forming a laminate, or said combination infrared and near infrared radiation blocking layer on said substrate forming a laminate; and wherein said laminate is capable of transmitting at least 70% of visible light incident thereupon having a wavelength of 555 nm, wherein said laminate is capable of blocking at least about 90% of near infrared light incident thereon having a wavelength of about 1,000 nm, and wherein said laminate is capable of blocking at least about 90% of infrared radiation thereon having a wavelength of about 2,000 nm. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification