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AssigneeMitsubishi Rayon Co., Ltd.
InventorsTakao Miyamori, Kazuaki Hayashida, Jun Kamo
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A heat-resisting porous membrane comprises a porous polyolefin membrane having a crosslinked copolymer held on at least a part of the pore surfaces thereof, the crosslinked copolymer being composed of a monomer (A) comprising at least one multifunctional (meth)acrylate and a monomer (B) comprising at least one monofunctional (meth)acrylate having a hydrocarbon radical of 5 to 20 carbon atoms; and the heat-resisting porous membrane can be hydrophilized by additionally having a crosslinked polymer thereon. These heat-resisting porous membranes can be used in hot water for a long period of time without deteriorating the mechanical properties inherently possessed by the matrix of the porous membrane.
A heat-resisting porous membrane comprising a porous polyolefin membrane having a crosslinked copolymer held on at least a part of the pore surfaces thereof, the crosslinked copolymer being composed of a monomer (A) comprising at least one multifunctional (meth)acrylate and a monomer (B) comprising at least one monofunctional (meth)acrylate whose ester forming part consists of a hydrocarbon radical of 5 to 18 carbon atoms.
A hydrophilized heat-resisting porous membrane comprising a porous polyolefin membrane having a cross-linked copolymer held on at least a part of the pore surfaces thereof and additionally having a hydrophilic polymer held on at least a part of the crosslinked copolymer, the crosslinked copolymer being composed of a monomer (A) comprising at least one multifunctional (meth)acrylate and a monomer (B) comprising at least one monofunctional (meth)acrylate whose ester forming part consists of a hydrocarbon radical of 5 to 18 carbon atoms.
Dependencies are inferred from the claim text.