Method for producing flexographic printing forms by thermal development
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United States of America Patent
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Aug 30, 2011
Grant Date -
Oct 9, 2008
app pub date -
Nov 11, 2004
filing date -
Nov 17, 2003
priority date (Note) -
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Abstract
Flexographic printing plates are produced by thermal development by a process in which an imagewise exposed flexographic printing element is developed by heating and removing the softened, unpolymerized parts of the relief-forming layer, the flexographic printing element containing a styrene/butadiene block copolymer as a mixture with a plasticizer, and the proportion of butadiene which is present in 1,2-linked form being from 15 to 50% by weight, based on the block copolymer.
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