| abstract |
Predominantly crystalline photopolymerizable compositions contain a nongaseous ethylenic monomer and an organic, light sensitive, free-radical generating system which acts as a polymerization initiator for the monomer. Depending on their composition the crystalline compositions are polymerizable either in air or in the absence of air, upon exposure to relatively small amounts of light, e.g., on the order of 6 to 2000 Mu j/sq.cm. They are useful for photoimaging, preparation of films and fibers, transparent projection slides, lightographic plates, photoresists and photoactive cements, etc. |