Patent ID: 9012542
Filing Date: 2015-04-21
Classification: C08F,C08L

Abstract:
1. An asphaltic concrete mixture with improved properties relative to rutting and emissions, the asphaltic concrete mixture comprising: (i) a homogeneous sulfur-modified polymer composition having a total amount of sulfur, where the homogenous sulfur-modified polymer composition comprises a homogeneous blend of a sulfur-modified polymer and a free sulfur; and (ii) an asphaltic concrete, where the asphaltic concrete comprises an aggregate and a bitumen; where the sulfur-modified polymer has a saturated hydrocarbon polymer backbone and has sulfur that is chemically bonded to the saturated hydrocarbon polymer backbone, and where the total amount of sulfur in the homogeneous sulfur-modified polymer composition is equal to the sum of the amounts of the chemically-bonded sulfur and the free sulfur and is in a range of from about 30 wt. % to about 60 wt. % of the homogeneous sulfur-modified polymer composition.