Patent ID: 9631094
Date: 2017-04-25
CPC Classifications: C08L,C09D

Claim:
1. A non-blown roofing grade bitumen composition comprising: a) bitumen feedstock; and b) non-oxidized polyolefin selected from the group consisting of, ethylene-acrylic acid (EAA) co-polymer, ethylene-vinyl acetate (EVA) co-polymer, ethylene maleic anhydride (MAPE) co-polymer, propylene maleic anhydride (MAPP) co-polymer, Fischer-Tropsch wax (FT wax), and mixtures thereof having a crystallinity of greater than 75% and having a molecular weight of from about 2000 to about 15,000 g/mol; wherein the softening point of the composition is above 70° C. as determined according to method ASTM D36, and wherein the penetration of the composition is at least about 12 dmm at 25° C. as determined according to method ASTM D5.