Laser Engraveable Compositions for Relief Image Printing Elements
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United States of America Patent
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Issued Date -
Aug 1, 2013
app pub date -
Jan 31, 2012
filing date -
Jan 31, 2012
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Abstract
A laser engravable photocurable composition comprising: (a) crosslinked elastomeric polymer particles having a diameter of between about 5 and about 1000 nm; (b) about 0 to 60 parts of at least one monomer; (c) about 0.1 to 4 parts of at least one photoinitiator; and optionally, (d) a binder or oligomer. The crosslinked elastomeric polymer particles preferably comprise: (i) an aliphatic conjugated diene monomer; (ii) at least one vinyl monomer; and (iii) optionally, an acid functional monofunctional vinyl monomer. In addition a laser engravable relief printing element including the laser engravable photocarable composition and an engraving method are also described.
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