| 摘要 |
1448273 Porous ion exchange resin/olefine polymer compositions MITSUBISHI PETROCHEMICAL CO Ltd 3 Sept 1973 [1 Sept 1972] 41360/73 Headings C3C and C3P An ion exchanger in the form of a shaped article comprising a matrix of a cellular olefine resin having microscopic continuous cells and a powdered ion-exchange resin enveloped within the cells is made by mixing the powdered ionexchange resin and the olefine resin in a weight ratio of 8 : 2 to 2À5 : 7À5 respectively, kneading and shaping the mixture at a temperature at which the olefine resin melts and at which the ion-exchange resin retains its shape, cooling the article thus shaped to solidify it, and treating the solidified article so with hot water at a temperature of at least 60‹ C. for at least 3 min. and less than 3 hours. The olefine resin may be a polymer of ethylene, propylene and/or butene-1. The aqueous solution may contain up to 10% by wt. of a water-soluble acid, base and/or salt. The article may be an extruded sheet film or fibrous structure, or a pressed film. The ionexchange resin may be a strong-acid or weakbase type. |
