Bitumen-containing extended compositions
US4371641A · kind A · utility
10Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1981 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Dec 21, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The instant invention relates to improved roofing materials which are a blend composition of a bitumen, a neutralized sulfonated polymer, and a filler, wherein the concentration level of the neutralized sulfonated polymer is about 5 to about 25 parts by weight per 100 parts by weight of the bitumen, more preferably about 7 to about 20, and the concentration level of the filler is about 0 to about 100 parts by weight per 100 parts of the bitumen. The improved roofing material based on such a composition has excellent stability towards oxidation, is U.V. stable and has good resistance to creep.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.