Sealing composition and method of making the same
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United States of America Patent
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Oct 15, 1985
Issued Date -
N/A
app pub date -
Jun 14, 1984
filing date -
Mar 28, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Composition produced from paving grade asphalt, process oil (not over 32%) and SBR rubber or rubbers, such as butadiene-styrene copolymers, in decreasing amounts by weight. A preferred range is asphalt 41.9-61.25%, process oil 18-25%, lower molecular weight butadiene-styrene copolymer 8-17%, higher molecular weight butadiene-styrene copolymer 2-4% and filler, such as limestone dust, 0-20%. Other preferred formulae are shown, as well as temperature and other conditions of the preferred method, including reheating of composition for application to joints, cracks and the like.
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