Process for the preparation of bitumen-polymer compositions containing a crosslinked elastomer and a functionalized olefinic polymer
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United States of America Patent
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Jan 4, 2000
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N/A
app pub date -
Jul 9, 1996
filing date -
Nov 10, 1994
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Abstract
Bitumen/polymer compositions having improved mechanical properties are produced by stirring together, at a temperature of 100-230.degree. C., a bitumen or bitumen mixture, a sulphur-curable elastomer and a polymeric additive consisting of at least one functionalized olefin copolymer and a sulphur-donating coupling agent. The bitumen/polymer compositions may be used directly or in dilute form to make bituminous binders for road surfaces, coated materials and sealing coatings.
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