Asphalt composition
US4530652A · kind A · utility
30Cited by
9References
19Claims
0Family size
Inventors
Key dates
| Filing date | Jan 12, 1984 |
| Grant date | Jul 23, 1985 |
| Priority date | — |
| Expiry date | Jan 12, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2221
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Asphalt compositions having improved physical properties are prepared by blending into an asphalt a high vinyl rubbery polymer such as a conjugated diene/monovinyl aromatic block copolymer wherein the conjugated diene blocks contain at least about 25 percent 1,2 addition (or vinyl unsaturation based on total diene content).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.