Bitumen compositions and methods of making
US9631094B2 · kind B2 · utility
14Cited by
17References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 5, 2013 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Mar 30, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A non-blown roofing grade bitumen composition comprising bitumen feedstock, polyolefin having a molecular weight of from about 800 to about 50,000 g/mol, and optionally one or more additives, wherein the softening point of the composition is above 70° C. as determined according to method ASTM D36 and the penetration of the composition is at least about 12 dmm at 25° C. as determined according to method ASTM D5. A method of making the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.