Sorbent material for reducing formaldehyde emission

Details Sorbent material for reducing formaldehyde emission Sorbent material for reducing formaldehyde emission

1982-03-26

1984-04-17

Padgett, Benjamin R.

Compositions

Co, s, negative element, or acid, bindant containing

With absorbents

252184, 55387, 428528, 428535, 428541, 502401, 502404, 502515, 568422, B01J 2032, B01J 1904, B01D 5314

Patent

active

044433549

ABSTRACT:
Granular sorbent material comprising a granular high surface area support impregnated with a water soluble, essentially non-volatile primary or secondary amine with equivalent weight less than about 400 and bearing either zero or two carbonyl substituents attached directly to the amino nitrogen atom is disclosed. The resulting material can be used as the filtration media in respirators, powered air purifiers, room air purifiers, ventilation filters, exhaust filters, process gas filters and the like to reduce the formaldehyde content of air.

REFERENCES:
patent: 2321958 (1943-06-01), Walker
patent: 2870041 (1959-01-01), Waddle et al.
patent: 3049399 (1962-08-01), Gamson et al.
patent: 3226332 (1965-12-01), Lincoln et al.
patent: 3400079 (1968-09-01), Clifford et al.
patent: 3983084 (1976-09-01), Alexander et al.
patent: 4186242 (1980-01-01), Holmquist
patent: 4282119 (1981-04-01), Tinkelenberg et al.
patent: 4397756 (1983-08-01), Lehmann

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