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AssigneeNippon Shokubai Co., Ltd.
InventorsKoichi Yonemura, Hiroshi Yamazaki, Masazumi Sasabe, Hirotama Fujimaru, Kinya Nagasuna
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This invention is targeted at providing a method for producing a porous cross-linked polymer material excelling in absorption properties and mechanical strength in a short period of time. In the production of a porous cross-linked polymer material from an HIPE, the method of this invention is characterized by comprising a step of polymerizing the HIPE till the bromine value thereof falls to not more than 25% of the value existing prior to the polymerization and a subsequent step of after curing the porous cross-linked polymer material by means of an active energy ray or a temperature higher than the polymerization temperature.
In the production of a porous cross-linked polymer material by the polymerization of a water-in-oil emulsion, a method for the production of a porous cross-linked polymer material, comprising a step of polymerizing said water-in-oil emulsion till the bromine value thereof falls to not more than 25% of the value existing prior to said polymerization and a subsequent step of aftercuring the produced porous cross-linked polymer material by virtue of an active energy ray or a temperature higher than the polymerization temperature.
Dependencies are inferred from the claim text.