ASPHALT-POLYMER BINDER Russian patent published in 2002 - IPC

FIELD: waterproofing materials. SUBSTANCE: binder based on asphalt or its mixture with carbon-chain polymers contains, as polymer modifier, 0.3 to 10% of low-oxidation atactic polypropylene having molecular weight 22000-29000 and containing 0.20-0.34 mol % of carbonyl groups. The latter is prepared via oxidation of atactic polypropylene with air oxygen. Binder can find use when manufacturing asphaltic concretes, waterproofing coatings and mastics for construction purposes. EFFECT: increased adhesive and cohesive properties with regard to polar materials such as concrete, steel, and mineral fillers, increased heat resistance and heat-oxidation ageing resistance. 2 cl, 3 tbl