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AssigneeToray Industries, Inc.
InventorsShigetora Kashio, Katsutoshi Sasashita, Tomio Adachi
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This invention relates to a photosensitive polymer composition containing as essential components (A) a soluble polymer, (B) a photopolymerizable compound having an ethylenic double bond in the molecule there of and (C) a photopolymerization initiator, the soluble polymer comprising a water-soluble polymer and an alcohol-soluble polymer, the composition having a sea-and-islands structure comprising sea containing the water-soluble polymer as a main component and islands containing the alcohol-soluble polymer as a main component, and the islands are independently in the form of sphere or oval having a diameter of 0.1 to 20 microns. The photosensitive polymer composition affords a printing plate having high image reproducibility and water-developability and capable of withstanding the coating of an aqueous polymer according to a printing method.
A photosensitive polymer composition containing as essential components (A) a soluble polymer, (B) a photopolymerizable compound having an ethylenic double bond in the molecule thereof and (C) a photopolymerization initiator, said soluble polymer comprising a sea-island structure containing a water-soluble polymer forming a sea and an alcohol-soluble polymer forming a plurality of islands having a diameter of 0.1 -20 microns which is insoluble in water, said soluble polymer being dissolved in a water/alcohol solvent, and at least a portion of said water-soluble polymer or said alcohol-soluble polymer being constituted by a modified nylon obtained by chemically grafting a hydrophilic group onto an N-alkoxymethylated nylon.
A photosensitive polymer composition containing as essential components (A) a soluble polymer, (B) a photopolymerizable compound having an ethylenic double bond in the molecule thereof and (C) a photopolymerization initiator, said soluble polymer comprising a water-soluble polymer and an alcohol-soluble polymer which is insoluble in water, said soluble polymer being dissolved in a water/alcohol solvent, said composition having a sea-and-islands structure comprising a sea structure containing said water-soluble polymer as a main component, and a plurality of separate islands in said sea structure, said islands containing said alcohol soluble polymer which is substantially insoluble in water as a main component, and said islands being independently in the form of spheres or ovals having a diameter of 0.1 to 20 microns, said water-soluble polymer containing a water-soluble polyamide and a water-soluble, modified nylon obtained by chemically grafting a hydrophilic group onto an N-alkoxymethylated nylon.
A photosensitive polymer composition containing as essential components (A) a sea-island soluble polymer, (B) a photopolymerizable compound having an ethylenic double bond in the molecule there of and (C) a photopolymerization initiator, said soluble polymer comprising a water-soluble polymer forming a sea and an alcohol-soluble polymer forming a plurality of islands having a diameter of 0.1-20 microns which is insoluble in water, said soluble polymer being dissolved in a water/alcohol solvent, said alcohol-soluble polymer containing an alcohol-soluble polyamide and an alcohol-soluble, modified nylon obtained by chemically grafting a hydrophilic group onto an N-alkoxymethylated nylon.
Dependencies are inferred from the claim text.