| 摘要 |
<p>1466702 Encapsulated carbon SANDOZ Ltd 5 Feb 1974 [9 Feb 1973] 05303/74 Heading B8C [Also in Divisions A5 and C1] Activated carbon is encapsulated in a hydrophilic, negatively charged polymeric film, preferably comprising a copolymer of acrylic acid with either styrene or acrylonitrile, the film having selective permeabilities for uremic toxins in the intestinal tract.</p> |
