Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1992-09-08
1996-08-27
Dote, Janis L.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
4302811, 430306, 522114, G03F 738, G03C 173
Patent
active
055500056
ABSTRACT:
Flexographic photosensitive printing plates are made with formulations comprising triblock polymers of poly(vinylpyridine)-poly(butadiene) or poly(isoprene)-poly(vinylpyridine). A variation in the formulations includes the insertion of a copolymerizable monomer such as styrene between the poly(butadiene) and poly(vinylpyridine) blocks. The polymers may be quaternized or neutralized with an organic acid. When made with quaternized polymers, the plates after imaging with UV may be developed in aqueous solutions. The acid neutralized polymers offer further advantages as to ease of synthesis, safety and improved resolution.
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Soum et al "Synthesis and Characterization of New Block Copolymers of Butadiene and 2-Isopropenylpyridine", Polymer, 29, 1528-1534 (Aug. 1988).
Berrier Arthur L.
Kanga Rustom S.
Dote Janis L.
W. R. Grace & Co.,-Conn.
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