| 摘要 |
A bitumen composition comprising asphalt and a low molecular weight alpha -olefin homopolymer or copolymer. The composition is useful in the preparation of roofing coatings or materials and the cured roofing material will exhibit improved low temperature flexibility when compared to prior art roofing compositions. The compositions may also contain other additives including high molecular weight polymers, fillers, fire retardants, anti-oxidants, anti-ozonants, pigments and the like. |
