Photosensitive elastomeric composition for flexographic printing plates having improved softness
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United States of America Patent
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Aug 11, 1987
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N/A
app pub date -
Jul 18, 1985
filing date -
Jul 18, 1985
priority date (Note) -
Expired
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Abstract
A photosensitive elastomeric composition which comprises a high molecular weight elastomeric diene polymer having a number average molecular weight (Mn) of about 30,000 to 125,000, and a Mooney viscosity (ML-4 at 100.degree. C.) of 35 or higher; a low molecular weight diene polymer having a number average molecular weight of about 1,000 to 25,000; a photopolymerizable, ethylenically unsaturated cross-linking agent; and an addition polymerization initiator activatable by actinic radiation.
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