Asphalt formulations and methods for production

Abstract

The asphalt formulations according to the invention include the use of post-consumer recycled materials and provide for shingle and roll roofing membranes that exhibit performance requirements of the roofing industry. The formulations provide additional benefits of less blistering compared to conventional polymer modified asphaltic formulations, and are less susceptible to external damage such as scuffing and granule loss. The post-consumer recycled materials are olefinic polymers such as polyethylene and polypropylene waxes that may be derived from, for example, feedstock from waste agricultural films, bottles, milk jugs, waste plastics, consumer bags, polyolefin plastics, and synthesized plastics.

1 - 11 . (canceled) 
     
     
         12 . A method comprising:
 introducing asphalt into a mixing tank at a temperature between 350° F. and 400° F.;   introducing ground tire rubber, radial styrene butadiene styrene, linear styrene butadiene styrene, and recycled polyethylene/polypropylene, into the mixing tank containing the asphalt; and   high shear mixing of the contents of the mixing tank.