Compositions – Reductive bleachant – deoxidant – reductant – or generative – Deoxidant or oxygen scavenging
Patent
1999-02-09
2000-03-21
Anthony, Joseph D.
Compositions
Reductive bleachant, deoxidant, reductant, or generative
Deoxidant or oxygen scavenging
252384, 422 40, C09K 1504, C09K 1526, B01J 1900
Patent
active
060398922
ABSTRACT:
There is disclosed herein an oxygen absorbent composition comprising an organic oxygen absorbent (A) which neither absorbs nor releases moisture and in which an oxidizable main component is supported on a porous silicate having an average pore diameter of 200 to 5,000 .ANG., and a formaldehyde absorbent (B) which neither absorbs nor releases moisture and is at least one of an amine, a thiol and a sulfonic acid that is supported on a porous carrier. According to this invention cultural assets made of organic materials which are required to be kept in a medial humidity atmosphere can be preserved in an atmosphere of a medial humidity, a low oxygen concentration and a low formaldehyde concentration by the use of the disclosed oxygen absorbent composition.
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Himeshima Tomoharu
Iwai Tatsuo
Nakagawa Kazumoto
Watanabe Takayuki
Anthony Joseph D.
Mitsubishi Gas Chemical Company Inc.
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