Patent · US Active

Modified asphalt binders and asphalt paving compositions

US8344049B2 · kind B2 · utility

1Cited by

52References

19Claims

0Family size

Assignees

Firestone Polymers, LLC · US
Heritage Research Group, LLC · US

Inventors

William L. Hergenrother · Akron, US
Peter W. Boerner · Massillon, US
Christine Rademacher · Akron, US
Daniel F. Graves · Canal Fulton, US
Timothy P. Reece · Indianapolis, US
Herbert L. Wissel · Indianapolis, US

Key dates

Filing date	Sep 14, 2010
Grant date	Jan 1, 2013
Priority date	—
Expiry date	Jan 9, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L53/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A modified asphalt binder composition prepared by combining asphalt binder, phosphorus pentasulfide, and less than 2.5 parts by weight unsaturated polymer, per 100 parts by weight asphalt binder, to thereby produce a modified asphalt binder composition characterized by an elongation recovery at 25° C., as determined according to AASHTO T301, of greater than 75%.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.