| 摘要 |
PROBLEM TO BE SOLVED: To obtain a crosslinked product improved in water resistance, solvent resistance, scratch resistance, and blocking resistance by bringing an oxidizable polymer having oxidatively crosslinkable functional groups into contact with an oxidase and crosslinking the polymer. SOLUTION: An inert polymer having 2-4,000 dormant functional groups with a molecular weight of 50-500 and having a glass transition temperature of -40 to 120 deg.C and a weight-average molecular weight of 500,000 or above is brought into contact with 10-50,000 ppm of an activator selected among activated acids, activated bases, and activated enzymes to obtain an oxidizable polymer having a weight-average molecular weight of 500,000 or above, desirably, 500,000-2,000,000, a glass transition temperature of -40 to 120 deg.C, and 2-4,000 oxidatively crosslinkable functional groups with a molecular weight of 50-500. This polymer is brought into contact with an aqueous solution (pH of 3-11) containing 25-10,000 ppm, desirably, 50-600 ppm of an oxidase, and the polymer is crosslinked through the oxidatively crosslinkable functional groups to obtain a crosslinked polymer. This polymer is applied to a substrate to form a pot mix layer. |
