Apparatus for removing vaporized unreacted isocyanate from a gaseous waste stream
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United States of America Patent
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Oct 7, 2008
Grant Date -
Sep 13, 2007
app pub date -
Mar 10, 2006
filing date -
Mar 10, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus includes a container that defines an interior. The interior is isolated from ambient atmosphere for receiving a composition that includes isocyanate. A conduit extends into the container and defines a channel therethrough. An interior of the container is in fluid communication with the ambient atmosphere through the channel for conveying a gaseous waste stream that includes vaporized unreacted isocyanate out of the container and into the ambient atmosphere. A medium is disposed in the channel and has free isocyanate-reactive groups for reacting with unreacted isocyanate. The free isocyanate-reactive groups remove the unreacted isocyanate from the gaseous waste stream. The medium, by including the free isocyanate-reactive groups, relies on a chemical reaction to remove the unreacted isocyanate.
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