Preparation process for bitumen/polymer compositions and...

Details Preparation process for bitumen/polymer compositions and... Preparation process for bitumen/polymer compositions and...

C - Chemistry, Metallurgy

08

L

C08L 95/00 (2006.01) C08J 3/24 (2006.01) C08L 9/06 (2006.01) C08L 23/04 (2006.01)

Patent

CA 2180757

Bitumen/polymer compositions having improved mechanical properties are produced by stirring together, at a temperature of 100-230 ~C, a bitumen or bitumen mixture, a sulphur-curable elastomer and a polymeric additive consisting of at least one functionalised 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.

Des compositions bitume/polymère à propriétés mécaniques améliorées sont produites en mettant en contact, entre 100 °C et 230 °C et sous agitation, un bitume ou mélange de bitumes, un élastomère réticulable au soufre, un adjuvant polymère consistant en au moins un copolymère oléfinique fonctionnalisé et un agent de couplage donneur de soufre. Ces compositions bitume/polymère sont utilisables, directement ou après dilution, pour former des liants bitumineux pour la réalisation de revêtements superficiels routiers, d'enrobés et de revêtements d'étanchéité.

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