Adsorbent for artificial organs

Details Adsorbent for artificial organs Adsorbent for artificial organs

C - Chemistry, Metallurgy

08

K

252/26, 128/60

C08K 9/00 (2006.01) A61M 1/36 (2006.01) C01B 31/08 (2006.01) C01B 31/14 (2006.01)

Patent

CA 1108108

Abstract of the Disclosure The speficiation discloses an adsorbent for use in artificial organs in the form of beads of activated carbon and a bio-compatible substance adsorbed by, or coated on, the surface of the beads. The beads of activated carbon are those prepared by heating and stirring a mixture of a pitch having a softening point of 50-350°C, a carbon content of 80-97%, a hydrogen/carbon atomic ratio of 0.3 to 2.0, and a nitrobenzene insoluble fraction content of below 60% by weight, at least one aromatic compound as a solvent miscible with said pitch, and 0.1 to 10 wt. % of hydrocarbon polymer or a copolymer of a hydrocarbon as the main component. The mixture is then dispersed in an aqueous solution containing a suspending agent, and the bead- thus obtained are subjected to a series of treat- ments for the removal of the solvent, infusibilization, carbonization and activation. The resulting beads have low dusting properties, high strength and good compat- ibility with biological systems, while at the same time exhibiting high adsorbing properties to toxins.

320937

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