Polymer-modified asphalt compositions
US9187645B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Nov 7, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A modified-asphalt composition prepared by introducing a diene end-capped block copolymer with a molten asphalt composition, where the block copolymer is defined by the formulaα-(D-V-d)X where each D is independently a polydiene block, each V is independently a vinyl aromatic block, each d is a polydiene end cap, α is a coupling moiety, and x is an integer from 2 to 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.