Polyimides for use as high refractive index, thin film materials
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United States of America Patent
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Mar 20, 2007
Grant Date -
Mar 24, 2005
app pub date -
Sep 2, 2004
filing date -
Sep 19, 2003
priority date (Note) -
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Abstract
New compositions for use as high refractive index layers are provided. The compositions comprise a polyimide dispersed or dissolved in a solvent system. The polyimide can be prepared from commercially available dianhydrides and diamines. Preferred polymer include recurring monomers selected from the group consisting of ##STR00001## The inventive compositions can form strong, thin films and have high refractive indices making them useful in a wide range of optical applications.
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