| abstract |
PURPOSE: To obtain an article swelling with water and suitable as a sealant, water-stopping material, etc., by irradiating a water-absorbing polymer or a material containing the same with infrared radiation, electron, ray, or ionizing radiation, thereby rapidly and easily crosslinking the polymer. n CONSTITUTION: A water-absorbing polymer (e.g. saponified ethylene-vinyl ester- acrylate copolymer) or a material containing the same (e.g. resin, rubber, etc.) is crosslinked by the radiation of infrared ray, electron ray or ionizing radiation to obtain the objective article swelling with water. The use of infrared heater furnished with a reflector is preferable for the reduction of production cost. n EFFECT: A partial or restricted crosslinking which has hitherto been difficult can be carried out easily and rapidly. n COPYRIGHT: (C)1985,JPO&Japio |