NITROGENOUS GAS SUSTAINED RELEASING AGENT AND NITROGENOUS GAS SUSTAINED RELEASER COMPOSED OF THE SAME AS WELL AS NITROGENOUS GAS SUSTAINED RELEASING METHOD, RESPIRATORY EQUIPMENT, PACKAGE, AND SUSTAINED RELEASING APPARATUS USING THE SUSTAINED RELEASER
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United States of America Patent
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Issued Date -
Jul 7, 2022
app pub date -
Apr 1, 2020
filing date -
Apr 19, 2019
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Abstract
The invention provides a nitrogenous gas sustained releasing agent that is capable of sustainably releasing off nitrogenous gases in the air at normal temperature and safe to handle and a nitrogenous gas sustained releaser composed of the same as well as a nitrogenous gas sustained releasing method, respiratory equipment, a package and a nitrogenous gas sustained releasing apparatus using said sustained releaser. The nitrogenous gas sustained releasing agent contains a layered double hydroxide having nitrite ions (NO2−) and/or nitrate ions (NO3−) included between layers. The nitrogenous gas sustained releaser composed of the sustained releasing agent is exposed to a gas containing carbon dioxide and water vapor to induce any one or more processes of sustained release of nitrous acid, self-decomposition of nitrous acid, oxidization/reduction of nitrous acid, and reduction of nitrite ions/nitrate ions thereby sustainably releasing off nitrogenous gases.
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