| 摘要 |
Provided is an ion exchanger having excellent electric properties, low electric resistance, excellent mechanical strength and, at the same time, having excellent contamination resistance. An ion exchanger comprises a melt-extrusion-formed body of a resin composition containing a granular ion-exchange resin and a low-melting polyolefin resin having a melting point of not higher than 150°C, wherein the aforementioned melt extrusion-formed body: (a) comprises a granular ion-exchange resin at a ratio of not less than 30% but less than 50% by weight, and the low melting polyolefin resin in an amount of more than 100 but no more than 150 parts by weight per 100 parts by weight of the granular ion-exchange resin; (b) has a melt index in a range of 1 to 5 g/10 min as measured at 190°C; (c) has a water content of not less than 30%, wherein the low melting polyolefin resin is polyethylene; the ion exchanger is tubular-shaped. |
