Paving and roofing composite material comprising a bitumen, ground tire rubber and a compatibilizer

Abstract

Composite material for paving and roofing application, including recycled sulfur-vulcanized rubber between 5 to 20 wt % of the composite material, preferably 10 to 15 wt %, neat bitumen between 70 to 93 wt % of the composite material, preferably 80 to 90 wt %, a compatibilizer between 2 to 10 wt % of the composite material, preferably 2.5 to 7.5 wt % more preferably 4 to 6 wt % and including a hydroxyl-functionalized propylene-based copolymer preferably having hydroxyl-functionalized comonomer content between 0.1 and 0.6 mol %, more preferably 0.2 to 0.5 mol %, and an aluminum-containing residue including an elemental aluminum content from a quantity of 0 to 1.5 wt % of the hydroxyl-functionalized propylene-based copolymer.

Dependencies are inferred from the claim text.