Pressure-sensitive adhesive composition for PDP front filter and use thereof
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United States of America Patent
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May 21, 2013
Grant Date -
Dec 31, 2009
app pub date -
Jun 14, 2007
filing date -
Jul 20, 2006
priority date (Note) -
Expired
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Abstract
A pressure-sensitive adhesive composition for PDP front filters includes 100 parts by weight of a high molecular weight acrylic polymer A having a COOH or OH group, a weight average molecular weight (Mw) of 400,000 to less than 800,000, a molecular weight distribution (Mw/Mn) of not more than 5 and a glass transition temperature (Tg-A) of −40 to −10° C., and 5 to 20 parts by weight of a low molecular weight acrylic polymer B having a weight average molecular weight (Mw) of 10,000 to 50,000, a molecular weight distribution (Mw/Mn) of not more than 5 and a glass transition temperature (Tg-B) of 40 to 120° C.; and is crosslinked to a gel fraction of 50 to 90% and has a 90° peel strength of 5 to 15 N/25 mm. The pressure-sensitive adhesive composition does not cause bonding failures such as lifting even when exposed to thermal cycles.
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