PREPARATION PROCESS FOR BITUMEN/POLYMER COMPOSITIONS AND THEIR USE IN PAVING

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PCT No. PCT/FR95/01471 Sec. 371 Date Jul. 9, 1996 Sec. 102(e) Date Jul. 9, 1996 PCT Filed Nov. 8, 1995 PCT Pub. No. WO96/15193 PCT Pub. Date May 23, 1996Bitumen/polymer compositions having improved mechanical properties are produced by stirring together, at a temperature of 100-230 DEG 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.