Method and apparatus for changing physical and chemical properties of materials
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United States of America Patent
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Jul 19, 1988
Issued Date -
N/A
app pub date -
Sep 6, 1984
filing date -
Apr 5, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for sealing a port in a wall through which an element is passed, comprising the steps of combining a water based fire-resistant liquid sealing material and a solid water absorbing means which will swell to prevent shrinkage to form a mixture that seals, and introducing the mixture into the port to seal the port. Materials and compositions for carrying out the method are disclosed.
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