Patent ID: 7365059
Filing Date: 2008-04-29
Classification: C08J,C08K

Abstract:
1. A process for producing a photocrosslinked-polysaccharide composition, which comprises: freezing a photoreactive polysaccharide-containing solution comprising a photoreactive polysaccharide in which a photoreactive group is bound to a polysaccharide, an aqueous solvent capable of dissolving the photoreactive polysaccharide, and at least one substance selected from the group consisting of an alcohol, a surfactant and a chelating agent having compatibility with the aqueous solvent; and irradiating the resulting frozen product with light, wherein the alcohol is represented by the following formula (I): wherein R in the formula (I) is selected from the group consisting of: wherein the surfactant is selected from the group consisting of poly(ethylene glycol) and alkyl sulfate, and wherein the chelating agent is selected from the group consisting of hydroxycarboxylic acid and polyaminocarboxylic acid.