Radiation-sensitive polymers having sulfonyl urthane side chains and azide containing side chains in a mixture with diazo compounds containing
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United States of America Patent
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Oct 19, 1993
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app pub date -
Nov 23, 1992
filing date -
Feb 3, 1988
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Abstract
A radiation sensitive material suitable for the production of radiation sensitive plates for lithographic printing plate manufacture comprises a polymer having appendent azide-substituted aromatic ester groups and sulphonyl urethane groups. The radiation sensitive compound is produced by a process in which some hydroxyl and/or epoxide groups of a polymer are reacted with an azide substituted carboxylic acid or ester forming derivative thereof, and some hydroxyl groups are reacted with a sulphonyl isocyanate.
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