Fibrous adsorbent for hemoperfusion

Claim 1

An adsorbent for hemoperfusion which comprises a woven or knitted fibrous structure of activated carbon with a bulk density of at least 0.25 g/cc, said activated carbon having been derived from a fibrous precursor selected from the group consisting of regenerated cellulose, polyacrylonitrile and a thermosetting polymer, and having at least one coating thereon of a hydrophilic, blood-compatible, film-forming copolymer prepared by polymerization of at least one monomeric acrylate or methacrylate represented by the formula: ##STR3## wherein R 1 is hydrogen or methyl; and Y is a radical selected from the group consisting of --R 2 --OR 3 and --R 2 --NR 3 R 3 ', wherein R 2 is a divalent alkylene radical containing 2 to 3 carbon atoms or a poly (oxyalkylene) radical, and R 3 and R 3 ', respectively, are hydrogen or an alkyl group containing 1 to 3 carbon atoms, with a copolymerizable monomer containing an epoxy radical therein represented by the formula: ##STR4## wherein each of R 1 , R 1 ', and R 1 " independently is hydrogen or methyl; Z is a divalent radical selected from the group consisting of --COOR 2 and --CH 2 --OCH 2 --, wherein R 2 is a divalent alkylene radical containing 1 to 3 carbon atoms or a poly(oxyalkylene) radical; and n is 0 or 1; the copolymerizable monomer being present therein in the range of from 0.1 to 10% based on the weight of total monomers.