Flame retardant bitumen
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United States of America Patent
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Oct 8, 1991
Issued Date -
N/A
app pub date -
Dec 21, 1990
filing date -
Aug 17, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a stabilized, flame retardant roofing mat or sheeting impregnated with a composition comprising, a copolymeric styrene modified asphalt and a critical amount of between 35 and about 50 wt. % of colemanite. The invention also relates to the novel flame retardant composition which can be employed for treating roofing reinforcement and building siding material.
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