PT72115A - Bitumen-vulcanised elastomer compsns. - made by mixing bitumen with a soln. of a styrene!-butadiene! copolymer and sulphur in a heavy petroleum distn. cut
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Bitumen-vulcanised elastomer compsns. - made by mixing bitumen with a soln. of a styrene!-butadiene! copolymer and sulphur in a heavy petroleum distn. cut
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Priority to PT7211580ApriorityCriticalpatent/PT72115B/en
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Bitumen-polymer compsns. are made by mixing bitumen with a polymer soln. obtd. by stirring a butadiene-styrene copolymer at 120-180 degrees C with a mainly aromatic heavy cut obtd. from the cracking of petroleum, then adding 0.2-2% S whilst stirring in the same temp. range. Homogeneous S-vulcanised bitumen-polymer compsns. are obtd. with much shorter mixing times (1 hr.) than previously. The prods. are useful e.g. in road making and have excellent durability and mechanical properties.
PT7211580A1980-11-271980-11-27
PROCESS FOR THE PREPARATION OF BITUM-POLYMER COMPOSITIONS
PT72115B
(en)
Method for preparing bitumen-polymer compositions, application of said compositions to the production of coatings, and mother polymer solution for obtaining said compositions
Process for preparing bitumen-polymer compositions, use of these compositions in the manufacture of castings, and a polymer masterbatch for use in these compositions.
Bitumen-vulcanised elastomer compsns. - made by mixing bitumen with a soln. of a styrene!-butadiene! copolymer and sulphur in a heavy petroleum distn. cut