Production of an ozone removal filter

Details Production of an ozone removal filter Production of an ozone removal filter

1979-10-09

1981-11-24

Smith, Ronald H.

Coating processes

With pretreatment of the base

Preapplied reactant or reaction promoter or hardener

427327, 427380, 427399, 427400, B05D 304

Patent

active

043024904

ABSTRACT:
Production of a device or filter for removal of ozone from air, e.g. in aircraft cabins, by depositing an oxide film containing manganese dioxide on a substrate, particularly a light weight thermally stable substrate, e.g. polybenzimidazole, by treatment with a permanganate solution containing a soluble ceric salt such as ceric ammonium nitrate, and preferably also a dichromate such as sodium dichromate, to form a dense strongly adherent film or coating of MnO.sub.2, ceric oxide and preferably also chromic oxide, on the substrate. A solution containing an oxidizable organic component such as abietic acid can be first applied to the substrate, followed by treatment with the above permanganate solution.

REFERENCES:
patent: 3019197 (1962-01-01), Saunders
patent: 3269801 (1966-08-01), Boberg et al.
"The Merck Index", 9th Ed, 1976, pp. 71, 250, 993.
Rideal "Ozone", Sep. 5, 1922, p. 135, Constable.

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