Flexographic printing forms having resistance to UV-hardenable p

Details Flexographic printing forms having resistance to UV-hardenable p Flexographic printing forms having resistance to UV-hardenable p

1997-09-16

1999-10-26

Baxter, Janet

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

4302861, 4302731, G03F 7033, G03F 7028

Patent

active

059725656

ABSTRACT:
A photopolymerizable mixture for photopolymerizable printing plates with an improved resistance to UV-hardenable printing inks, contains 10-45% by weight of at least one thermoplastic, elastomeric, block copolymer comprising of two or more polymer blocks comprising aromatic vinyl units and one or more polymer blocks comprising isoprene and/or isoprene/butadiene units. The block copolymer has a vinyl bond content not above 70%, a glass transition temperature not above 20.degree. C., and a peak temperature of a primary dispersion of tan .delta. not above 30.degree. C.

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