Photopolymerizable composition and photopolymerizable recording material containing same

Abstract From the Canadian patent

Upon imagewise exposure a photopolymerizable com-, position which contains (a) a polymeric binder;, (b) a compound that has at least one terminal ethylenic double bond and a boiling temperature, at standard pressure, of above 100°C, and that can form a polymer by polymerization initiated by a free-radical process;, (c) a photoinitiator;, (d) a leuco base of a triarylmethane dye; and (e) a photochromic spiro-indolino-benzopyran compound represented by the formula, wherein R denotes a hydrogen atom or 2 C1-to-C16 alkyl group, R1,R2,R3, and R4 are identical or different and each denotes a, hydrogen or a halogen atom a C1-to-C4 alkyl or, alkoxy group, or a nitro group and, R5, R6, R7, and R8 …