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AssigneesDainippon Ink and Chemicals, Inc., Kawamura Institute of Chemical Research
InventorsHusheng Zhang, Takanori Anazawa, Yasuko Watanabe, Miyuki Miyajima
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A porous material is disclosed, made of a semi IPN type polymer alloy of a crosslinked polymer (A) obtained by the crosslinking polymerization of a crosslinking-polymerizable vinyl monomer and/or oligomer (a) with a non-crosslinked polymer (D) which is soluble in a solvent (B) capable of dissolving said monomer and/or oligomer (a) therein and subjecting said crosslinked polymer (A) to gelation but is insoluble in a coagulating solution (C) which is compatible with said solvent (B) but doesn't subject said crosslinked polymer (D) to gelation. A porous material excellent in mechanical strength as well as in heat resistance can be prepared. Various functional groups can be introduced into the surface of the porous material. Further, the pore diameter can be easily controlled. The porous material of the present invention is excellent in physical properties such as strength, hardness and heat resistance as well as in chemical and biological properties such as non-adsorptivity and selective adsorptivity of protein.
A process for the preparation of a porous material, which comprises shaping a polymerizable solution (I) containing as essential components a crosslinking-polymerizable vinyl monomer and/or oligomer (a) which is a mixture of (I) a monofunctional monomer and /or oligomer having a hydrophilic structure moiety covalently having a hydrophilic group which is selected from the group consisting of polyethylene glycol group, polyoxymethylene group, saccharide containing group, amide group, carboxyl group, sulfonic group, phosphorous acid group, amine group, ammonium group, amino acid-containing group and ammonium/phosphoric acid containing group, and (ii) a multi functional monomer and or oligomer free of hydrophilic structure, and a solvent (B) capable of dissolving said monomer and/or oligomer (a),
A porous material, made of semi IPN (semi-interpenetrating polymer network polymer alloy of a crosslinked polymer (A) with a non-crosslinked polymer (D), said porous material being obtained by a process which comprises shaping a polymerization solution (I) containing as essential components a crosslinked-polymerizable vinyl monomer and/or oligomer (a) which is a mixture of (I) a monofunctional monomer an/or oligomer having a hydrophilic structure moiety covalently having a hydrophilic group which is selected from the group consisting of polyethylene glycol group, polyoxyethylene group, saccharide group, amide group, carboxyl group sulfonic, phosphoric acid group, and (ii) a multi functional monomer and/or oligomer free of hydrophilic structure moiety and a solvent (B) capable of dissolving said monomer and/or oligomer (a);
Dependencies are inferred from the claim text.