Photopolymerizable composition

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430914, 430915, 430920, 522 31, 522 63, G03F 7029

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active

050117602

ABSTRACT:
A photopolymerizable composition which comprises (a) a polymerizable compound having at least one ethylenic unsaturated bond, and (b) a salt formed by an organic cationic dye compound and an organic boron compound anion, wherein the salt is represented by the following formula (I), in which an organic cationic dye compound is employed as D.sup..sym. to impart high spectral sensitivities to the composition ##STR1## wherein D.sup..sym. represents a cationic dye, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represents an alkyl group, an aryl group, an aralkyl group, an alkaryl group, an alkenyl group, an alkynyl group, or a group derived therefrom; and two or more of the substituent groups R.sup.1 and R.sup.4 can be combined to form a cyclic structure. The cationic dye D.sup..sym. is represented by formula (II)

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