| 摘要 |
In a negative acting photoimageable composition comprising an acid functional bi nder polymer having a T g between about 60 and about 90.degree.C, photopolymerizable .alpha.,.beta.-ethylenically unsaturated compounds, and photoinitiator, at least a portion of the photopolyme rizable compounds are isocyanate trimers having tri-.alpha.,.beta.-ethylenically unsatur ated functionality and a weight average molecular weight of at least about 1000.
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