| 摘要 |
PURPOSE:To manufacture the above mentioned membrane superior in water permeability, flexibility, compression durability and deterioration resisting property, by forming thin film of bride gormation adduct polymer contacting fine perforated basic material treated by the adduct polymer solution of polyepoxy compound and polyamino compound with a specific multifunctional compound. CONSTITUTION:Fine perforated basic material is dipped in the solution of polyfunctional compound selected from aromatic compound containing more than two of functional group selected from acid halide radical, sulfonylhalide radical, isocyanate radical and acid anhydride and aliphatic cyclic compound and heterocyclic compound after dipping in water solution of adduct polymer obtained from polyepoxy compound and polyamino compound having more than two of amino radical able to react with epoxy radical and also, having the solubility more than 0.5g/100g water (25 deg.C) and then, taking out. Next, the above treated material is taken out and is treated with heat after dried and then, this film of adduct polymer carried out bridge formation on the one face of the fine perforated basic material at least, is formed. |
