Post-foaming composition for protection against fire and/or heat
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United States of America Patent
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Feb 14, 2023
Grant Date -
May 7, 2020
app pub date -
Jan 3, 2020
filing date -
Jul 6, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
Inert and hydrocarbon gases, such as propellant gases, maintain a pressure in a bottle to ensure that a formed composition can be dispensed to an intended destination. The carrier releases soluble hydrocarbon gases and the water drops dissolve inert gases, so the liquid is inflated and creates upstanding foam. This foam maintains the texture and water content up to 6-24 hours, depending on the ratio of the fire-resistant component. As heat reaches the foam, the heat-resistant silicate component becomes activated. Strong heat causes evaporation of the moisture of the carrier, and then the bound water of the silicates evaporates from the foam, with a honeycomb-structure left behind which is a good thermal insulator and is able to protect the object. Above approximately 350° C., a ceramic protective layer forms, while the water content of the foam inside the foam migrates outwards towards the dry crust.
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