Electromagnetic radiation absorptive coating composition containing metal coated microspheres
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United States of America Patent
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Jul 28, 1998
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N/A
app pub date -
Nov 24, 1986
filing date -
May 21, 1984
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Expired
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Abstract
A strong lightweight composition containing metal coated microspheres has very broad band absorption properties for electromagnetic radiation and is useful as a thin coating or as a structural composite material in various applications. The microspheres have a diameter of from 1 to 350 microns and contain at least one radiation absorbing material selected from the group consisting of carbon, ferrites, magnetite, iron, nickel and cobalt, and have a thin-coating of metal on the microsphere surface. The metal coating is present at a weight percentage of 0.01 percent to 22 percent.
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