PHOTOSENSITIVE RESIN COMPOSITION

PURPOSE:To prevent the dark color development during long-term preservation in a dark place by incorporating a specific arom. carboxylate deriv. into the photopolymerizable photosensitive resin compsn. contg. a leuco compd. as a dye precursor. CONSTITUTION:This compsn. essentially consists of a comp...

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Hauptverfasser: YOKOYAMA KYOKO, KASHIO SHIGETORA
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To prevent the dark color development during long-term preservation in a dark place by incorporating a specific arom. carboxylate deriv. into the photopolymerizable photosensitive resin compsn. contg. a leuco compd. as a dye precursor. CONSTITUTION:This compsn. essentially consists of a compd. contg. >=2 pieces of ethylenic unsatd. bonds, a photopolymn. initiator, the leuco compd. as the dye precursor, and the arom. carboxylate deriv. having >=1 pieces of hydroxyl groups adjacent to the arom. group. This arom. carboxylate deriv. includes, for example, alkyl hydroxybenzoate, alkyl sodium oxybenzoate, o-methyl cresotinate, etc. The preferable amt. of this deriv. to be used is 0.01 to 100 pts.wt. of the leuco compd. Since the effect of preventing the dark color development is remarkable in this way, the long-term preservation of the photosensitive resin itself and the plate materials for printing and dry film resists produced by using this compsn. is possible.