To permeate various kinds of liquids and gases into a stretched porous body of a polytetrafluoroethylene(PTFE) resin consisting of fibers and knots and to enable the efficient execution of chemical reaction by active materials by immobilizing the active materials to a hydrophilic resin layer formed on a resin surface inclusive of the inside of the porous body described above.
When the porous body filter for treating the liquids or gases passing the inside of the porous material by utilizing the chemical reaction of enzyme and catalyst is efficiently manufactured, the inside of the stretched porous filter of the PTFE resin is impregnated with the aqueous hydrophilic resin solution dispersed with the active materials and thereafter, the hydrophilic resin is crosslinked and fixed, by which the active materials are fixed to the PTFE surface. Polyvinyl alcohol(PVA), acrylate base resin, etc., are usable as the hydrophilic resin and if the PTFE porous filter is impregnated with the PVA, the phenomenon that the PVA is thinly and uniformly adsorbed on the PTFE surface appears and the formation of the uniform coating layer of the hydrophilic resin having a high space retaining property is facilitated.
BESSHO HISAMI
NISHIMURA AKIRA
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