Activated carbon

Details Activated carbon Activated carbon

1986-09-18

1988-03-22

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427180, 427195, 4273722, 4274301, 428283, 428327, 428402, 428408, 428902, B32B 530

Patent

active

047328053

ABSTRACT:
An active carbon material includes a gas permeable surface coating of particulate hydrophobic material which renders the active carbon waterproof while still permitting it to adsorb undesirable components. Preferably the hydrophobic material is polytetrafluoroethylene having a mean particle size of substantially a tenth of a micron. Active carbon is waterproofed by immersing it in an aqueous suspension of the hydrophobic material and then drying the active carbon to remove the water to leave the particulate coating of hydrophobic material on the outer surface of the active carbon.

REFERENCES:
patent: 3108018 (1963-10-01), Lewis
patent: 4169187 (1979-09-01), Glazar
patent: 4194041 (1980-03-01), Gore et al.
patent: 4217386 (1980-08-01), Arons et al.
patent: 4431698 (1984-02-01), Case et al.
patent: 4508775 (1985-04-01), Adiletta
patent: 4565727 (1986-01-01), Giglia et al.

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