Transparent UV-curable adhesive
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United States of America Patent
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Sep 5, 2017
Grant Date -
Jun 15, 2017
app pub date -
Dec 5, 2016
filing date -
Dec 10, 2015
priority date (Note) -
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Abstract
A transparent ultraviolet curable adhesive is a solventless composition, based on a total weight of the composition, being composed of 35-65 wt % of a polyurethane (meth)acrylate resin, 30-60 wt % of a (meth)acrylate monomer, 0.1-5 wt % of an acrylate group-containing bisphenol fluorene derivative, 0.3-8 wt % of a photopolymerization initiator and 0.002-0.01 wt % of a vinyl silane coupling agent; and, the adhesive if cured has a refractive index of 1.52-1.56 very close to 1.52 for a glass thereof and has a visible light transmittance of 93-99 VLT (%) so suitable to be adhered to displays, transparent conductive film and touch panels.
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