Treatment of particulate carbon

Details Treatment of particulate carbon Treatment of particulate carbon

1974-07-24

1978-02-28

Hoffman, James R.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

210504, 424 31, 424 32, 424 35, 252426, 427 2, 210506, 210DIG23, 427221, 427222, A61K 930, A61K 932, B01D 3920

Patent

active

040768929

ABSTRACT:
Particulate porous absorptive material such as carbon is coated with a biocompatible polymer to give a thin (e.g. 1-10 micron) smooth permeable coating without plugging the pores. The resulting material is free from fines and surface debris and useful for haemoperfusion. Coating is best effected by spraying hot washed carbon granules, free from fines and in rapid movement with a solution of polymer (e.g. polyHEMA) so as to bring about rapid evaporation and a coating weight preferably of up to 20% usually 0.25% to 5%.

REFERENCES:
patent: 2040818 (1936-05-01), Badollet
patent: 2668151 (1954-02-01), Pedlow et al.
patent: 2725113 (1973-04-01), Chang
patent: 2984635 (1961-05-01), Harris
patent: 3109750 (1963-11-01), Roche
patent: 3238056 (1966-03-01), Pall et al.
patent: 3443492 (1969-05-01), Pleass
patent: 3522346 (1970-07-01), Chang
patent: 3544507 (1970-12-01), Lloyd
patent: 3661620 (1972-05-01), Dekking et al.
patent: 3669691 (1972-06-01), DeLong et al.
patent: 3681269 (1972-08-01), Heitz et al.
patent: 3704786 (1972-12-01), Lerner et al.
patent: 3802909 (1974-04-01), Rockett et al.

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