| 摘要 |
<p>A porous membrane is obtained by providing a crosslinked polymer mainly composed of (a) a polymerizable monomer having an acid anhydride or esterified carboxyl group or a monomer having a carboxyl group, (b) divinylbenzene, and optionally (c) a styrene, or (b) and (c), on at least part of the surface of polyolefin (particularly polyethylene or polypropylene) porous membrane, to render the membrane heat-resistant or both heat-resistant and hydrophilic. This membrane is produced by crosslink-polymerizing (a) to (c) on the polyolefin porous membrane under heating, optionally followed by hydrolysis. This porous membrane is useful for membrane separation requiring steam sterilization or membrane separation of high-temperature water.</p> |
