Asphalt compositions having improved properties and related coatings and methods
US9376565B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2012 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | May 14, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention includes a composition to coat a substrate comprising: an asphalt material; a polymer that is not a polyol; and a polyol. The polyol has a molecular weight of about 1000 to about 5000 and/or the polyol is present in an amount no greater than about 30% by weight of the total composition. Also included are coated articles that comprise a substrate coated with a coating layer, wherein the coating layer is formed from a composition that comprises: an asphalt material, a polymer that is not a polyol; and a polyol. Also included are methods of improving the processability of a asphalt material comprising combining together an asphalt material, a polymer that is not a polyol, and a polyol, wherein the resultant composition exhibits improved processability as compared to an asphalt composition that does not contain a polyol. In the method in some embodiments, the polyol may be present in the resultant composition in an amount of no greater than 30% by weight and/or the polyol may have a molecular weight of about 1000 to about 5000. In some embodiments, the composition of the method does not contain at least one of a plasticizer and a surface active agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.