Insulating felts reinforced by fibrous materials particularly for the waterproofing and/or corrosion-proofing of metal and/or concrete objects
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United States of America Patent
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Jul 22, 1980
Grant Date -
N/A
app pub date -
May 16, 1977
filing date -
May 19, 1976
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The insulating felt comprises 23 to 39% by weight of pyrolytic resin, 35 to 54% by weight of asphalt, 4 to 7% by weight of softener, 2.5 to 8% by weight plasticizer, 2 to 4% by weight of fine grained material and 10 to 25% by weight of reinforcing material. The felt is useful for water proofing or preventing corrosion of metal and concrete objects.
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