KETOCOUMARIN DERIVATIVE AND PHOTOSENSITIZATION PIGMENT FOR PHOTOPOLYMER COMPRISING SUCH DERIVATIVE

摘要

PURPOSE: To obtain a new compound which is useful as a photosensitive pigment for photopolymers, particularly in the field of image recording with visible laser beams. ;CONSTITUTION: A compound of the formula (R₁-R₄ each is an alkyl wherein at least one of them is an alkyl having an oxygen atom in the carbon chain). This compound is obtained, for example, by reaction of 4-(N-ethyl-N-butoxyethyl) amino-2-hydroxybenzaldehyde with methyl acetonedicarboxylate. It enable high- speed scanning of visible lasers such as argon ion laser or helium cadmium laser and is very useful as a photosensitizing pigment for a PS plate for laser direct process, a dry film resist, digital color proof, hologram recording or photosensitive microcapsules.;COPYRIGHT: (C)1995,JPO