BLOCK COPOLYMER FOR PHOTOSENSITIVE PRINTING PLATE MATERIAL HAVING EXCELLENT ABRASION RESISTANCE AND METHOD FOR PRODUCING SAME
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United States of America Patent
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Mar 11, 2021
app pub date -
Aug 2, 2018
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Aug 29, 2017
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Provided is a flexographic printing plate having improved abrasion resistance in addition to the appropriate elasticity (softness) required from a flexographic printing plate. The present invention is a block copolymer for a photosensitive printing plate material, the block copolymer comprising at least two polymer blocks having an aromatic vinyl monomer as a main constituent; and at least one polymer block having a conjugated diene monomer as a main constituent, wherein the amount of the aromatic vinyl monomer introduced into the polymer block having a conjugated diene block as a main constituent is 25% to 50% by weight of the content of all aromatic vinyl monomers to be bonded in the block copolymer.
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