Polymer modified asphalt reaction products
US10435560B2 · kind B2 · utility
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14References
15Claims
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Key dates
| Filing date | Jun 28, 2016 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Jan 26, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C7/35
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a process for producing a cross-linked asphalt/polymer composition (“polymer-modified asphalt” or PMA) that comprises or is produced from asphalt and an ethylene copolymer, an anhydride is used as a promoter. The ethylene copolymer comprises copolymerized units derived from ethylene and an epoxy-containing comonomer. An improvement in asphalt properties is demonstrated without the use of an acid catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.