Modified bituminous composition for roof membranes

Details Modified bituminous composition for roof membranes Modified bituminous composition for roof membranes

D - Textiles, Paper

06

N

D06N 5/00 (2006.01) C08L 95/00 (2006.01) E04D 5/02 (2006.01) E04D 5/06 (2006.01)

Patent

CA 2359173

Roofing membranes are provided with both high stiffness at high temperature (greater than 110 ~C) and good flexibility at low temperature (less than -20 ~C). Bituminous compositions may be more effectively used in such membranes at lower elastomer concentration than currently practiced, using conventional cross-linking reagents to prepare the modified bituminous compositions with a range of viscosities that are readily processed as compared with conventional non-cross-linked systems.

L'invention porte sur membranes pour toitures présentant à la fois une forte rigidité aux températures élevées (supérieures à 110 ·C) et une bonne flexibilité aux bases températures (inférieures à -20 ·C). Les compositions bitumineuses peuvent s'utiliser plus efficacement dans de telles membranes et avec des concentrations moindres d'élastomères que celles pratiquées actuellement en recourant à des réactifs usuels de réticulation permettant de préparer des compositions bitumineuses modifiées à large plage de viscosités, plus faciles à traiter que les systèmes classiques non réticulés.

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