초록 ▼

A self supporting fibrous matrix containing immobilized therein at least about 5% by weight of micro-particulate, with an average diameter less than 1 micron, preferably fumed silica, or alumina, and flocculating amounts of a neutral organic polymeric resin having oxygen atoms along the backbone the

A self supporting fibrous matrix containing immobilized therein at least about 5% by weight of micro-particulate, with an average diameter less than 1 micron, preferably fumed silica, or alumina, and flocculating amounts of a neutral organic polymeric resin having oxygen atoms along the backbone thereof, is useful for fluid treatment and filtration processes, especially delipidization and depyrogenation of fluids such as serum.

대표청구항 ▼

In a process of fabricating a self-supporting fibrous matrix containing immobilized therein particulate material comprising: (a) forming an aqueous slurry containing inorganic microparticulate material and cellulose fibers having a CSF of +400 to +800 ml; and (b) vacuum felting said slurry to thereb

In a process of fabricating a self-supporting fibrous matrix containing immobilized therein particulate material comprising: (a) forming an aqueous slurry containing inorganic microparticulate material and cellulose fibers having a CSF of +400 to +800 ml; and (b) vacuum felting said slurry to thereby form said self-supporting fibrous matrix; the improvement wherein said microparticulate material is at least about 5% by weight of a microparticulate material having an average diameter less than 1 microm, and wherein step (b) is carried out in the presence of flocculating amounts of neutral organic polymeric resin comprising a polyalkylene oxide homopolymer or a block random copolymer thereof having a molecular weight of between about 500 and 1,000,000; said resin being present in an amount insufficient to form an impermeable gel thereby preventing slurry felting.