G - Physics – 03 – F
Patent
G - Physics
03
F
G03F 7/028 (2006.01) G03C 5/08 (2006.01) G03F 7/038 (2006.01) G03F 7/26 (2006.01) G03F 7/28 (2006.01)
Patent
CA 2047582
ABSTRACT OF THE DISCLOSURE A photocurable composition P(Y)(Y1)(Y2) is prepared by reacting a solid carboxylated copolymer P(Y) having at least one pendent carboxyl group Y, and optionally one or more terminal carboxyl groups Y, with (i) a photosensitive vinyl-containing compound, e.g. glycidyl (meth)acrylate, which produces Y1 and optionally, with (ii) an anhydride, e.g. maleic anhydride, to produce Y2. Y1 has free vinyl groups and Y2 has free vinyl and acid groups. In addition, P(Y) can be a liquid carboxylated copolymer which is chain extended in order to prepare a solid. Either of the resulting photocurable compositions can be used "as is" or can be formulated with vinyl containing monomers and photoinitiators to prepare solid, flexible photosensitive articles, e.g. flexographic printing plates, which are water dispersible, and yet possess acceptable mechanical properties for flexographic printing.
Berrier Arthur L.
Mirle Srinivas K.
Gowling Lafleur Henderson Llp
Pt Sub Inc.
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