Polyester-polyether hybrid urethane acrylate oligomer for UV curing pressure sensitive adhesives
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United States of America Patent
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Jan 23, 2007
Grant Date -
Oct 27, 2005
app pub date -
Apr 27, 2004
filing date -
Apr 27, 2004
priority date (Note) -
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Abstract
The invention is a pressure sensitive adhesive (PSA) composition, which is the ultraviolet radiation (UV) cured reaction product of a polyester-polyether-based urethane acrylate, one or more acrylate monomers, and a UV photosensitizer. The polyester-polyether-based urethane acrylate is the reaction product of between about 50 and 90 wt-% of a polyester diol having a molecular weight ranging from about 500 to 3200; between about 10 and 50 wt-% of a polyether polyol having a molecular weight ranging from about 1000 to 6000; between about 1 and 5 wt-% of a hydroxy-functional acrylate; and a polyisocyanate.
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