초록

Shaped articles which are suitable as biocidal depth-type filters and consist of fibrous materials and particles, embedded therein, of crosslinked crospovidone-iodine or crospovidone-hydrogen peroxide.

대표청구항 ▼

[ We claim:] [1.] A shaped article which is suitable for use as a biocidal depth filter which consists essentially offibrous material comprising at least 1% by weight of total shaped article of polyolefin fibrid, the remainder of the fibrous material, if any, being cellulosic fibers, andembedded int

[ We claim:] [1.] A shaped article which is suitable for use as a biocidal depth filter which consists essentially offibrous material comprising at least 1% by weight of total shaped article of polyolefin fibrid, the remainder of the fibrous material, if any, being cellulosic fibers, andembedded into the fibrous material as the biocide, from 0.5 to 75% by weight, based on the weight of the total shaped article, of crospovidone-iodine which contains from 1 to 20% by weight of available iodine, andthe depth filter has a thickness of from 0.1 to 10 mm and an area weight of from 20 to 3,500 g/m.sup.2. [10.] A process for purifying fluids which comprises collecting the fluid and filtering it through a shaped article which is suitable for use as a biocidal depth filter which consists essentially offibrous material comprising at least 1% by weight of total shaped article of polyolefin fibrid, the remainder of the fibrous material, if any, being cellulosic fibers, andembedded into the fibrous material as the biocide, from 0.5 to 75% by weight, based on the weight of the total shaped article, of crospovidone-iodine which contains from 1 to 20% by weight of available iodine, andthe shaped article has a thickness of from 0.1 to 10 mm and an area weight of from 20 to 3,500 g/m.sup.2thereby killing microorganisms and inactivating viruses which may be present in the fluid. The process of claim 10 wherein the fluid to be purified contains a blood plasma product.