Non-color shifting multilayer structure and protective coating on the same
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A protective coating, multi-layer structure technology, used in inorganic pigment processing, wet preparation of dyed pigments, mirrors, etc.
Active Publication Date: 2016-09-28
TOYOTA JIDOSHA KK
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However, such prior art pigments require as many as 39 fi
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[0054] Provides an omnidirectional structural color. The omnidirectional structural color is in the form of a multilayer film (also referred to herein as a multilayer stack) that reflects a narrow band of frequencies within the visible spectrum when viewed from an angle between 0 and 45 degrees. electromagnetic radiation with little or no noticeable color shift. Multilayer films can be used as pigments in coating compositions, structurally continuous films, and the like.
[0055] The multilayer film includes a multilayer stack having a first layer and a second layer extending across the first layer. In some cases, the multilayer stack reflects narrowband electromagnetic radiation having a FWHM of less than 300 nm, preferably less than 200 nm, and in some cases less than 150 nm. When the multilayer stack is exposed to broadband electromagnetic radiation (such as white light) and the multilayer stack is viewed from an angle between 0 and 45 degrees, the multilayer film also ha...
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Abstract
The invention relates to a non-color shifting multilayer structure and protective coating on the same, and specifically, provides a color pigment of an omni-directional structure comprising a protective coating. The segment comprises a first layer of a first material and a second layer of a second material, and the second layer extends accross the first layer. In addition, when the segment is exposed to wide-band electromagnetic radiation and is observed at the angle of 0-45 degrees, the segment reflection has reserved full width at half maximum (FWHM) of below 300nm and an electromagnetic radiation band of reserved color shifting of below 30 degrees. The segment comprises a weathering coating which covers the external surface of the segment and makes the relative photocatalytic activity of the segment reducing at least 50%.
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[0001] Cross References to Related Applications [0002] This application is a continuation-in-part (CIP) of U.S. Patent Application Serial No. 14 / 242,429 filed April 1, 2014, which in turn is a serial number filed December 23, 2013 CIP to U.S. Patent Application Serial No. 14 / 138,499, which is in turn CIP to U.S. Patent Application Serial No. 13 / 913,402, filed June 8, 2013, Serial No. 13 / 913,402 U.S. Patent Application Serial No. 13 / 760,699, filed February 6, 2013, and U.S. Patent Application Serial No. 13 / 760,699, filed August 10, 2012, U.S. Patent Application No. 13 / 572,071 CIP, 13 / 572,071 is in turn the CIP of U.S. Patent Application Serial No. 13 / 021,730 filed February 5, 2011, and U.S. Patent Application Serial No. 13 / 021,730 is in turn 12 / 021,730 filed June 4, 2010 CIP 793,772 (US Patent 8,736,959), 12 / 793,772 in turn CIP 12 / 388,395 (US Patent 8,749,881), filed February 18, 2009, 12 / 388,395 in turn, serial number 11 filed August 12, 2007 CIP of US Patent Application 837...
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