Abrasion resistant UV-curable hardcoat compositions
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United States of America Patent
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Sep 7, 1993
Grant Date -
N/A
app pub date -
Apr 6, 1992
filing date -
Apr 6, 1992
priority date (Note) -
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Abstract
A method of making a UV curable hardcoat composition uses a strip-free process and produces hardcoats having good scribed tape-pull adhesion, high resistance to scratching and a low delta taber haze after abrading for 500 cycles with a 500 gram weight. UV curable hardcoat compositions are also provided which contain high solids contents and high mole percentages of photoinitiator. Compositions containing methoxypropanol as a water miscible alcohol and methylbenzoylformate as a photoinitiator exhibit high taber hardness and can be made by processes which obviate the need for a time and energy consuming solvent-strip step. The processes are not only shorter, but safer than processes which include a solvent-strip step.
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